ashrae temperatures rooftop

for Selected U.S. and Canadian Cities and Temperatures Inside Raceways on Rooftops Exposed to Direct Sunlight

Outdoor Temperatures

IntroductionThe National Electrical Code Section 310.15(A)(3), and good design practice, requires adjustment of ampacity of wires and cables installed in ambient temperature conditions that are higher than those upon which the listed ampacities of Table 310.15(B)(16) are based. Ambient temperature is understood to mean the temperature of the air surrounding the conductor. For conductors in raceway, the ambient to which the insulated conductor is subjected is the temperature of the air inside the raceway. Ambient temperatures within raceways above rooftops will vary with height, in accordance with Table 310.15(B)(3)(c). After determination of the resultant ambient temperature within the raceway, Table 310.15(B)(2)(a) should be applied. To help determine the temperature insulation will be subjected tounder unloaded conditionsCDA has compiled a table of average outdoor temperatures for various U.S. and selected Canadian cities, as well as temperatures inside raceway on and at various heights above rooftops in accordance with Table 315(B)(3)(c). For each city, the table contains:n

An average of the 2% ASHRAE design temperatures for each location for June through August* Likely resultant temperatures inside rooftop raceway (unloaded) exposed to direct sunlight in accordance with Table 315(B)(3)(c):n n n n

n

On the roof, and up to inch above roof Greater than inch and up to 3 inches above roof Greater than 3 inches and up to 12 inches above roof Greater than 12 inches and up to 36 inches above roof

n

ASHRAEs reported extreme annual design condition i.e., the maximum dry-bulb temperature reading for the location expected within a 50 year period.(footnotes on inside back cover)

T

he following table indicates the 2% design temperature (averaged for June-August) for various cities and the various Design Temperatures in sunlight. temperatures inside raceway on rooftops exposed to directRooftop Condu2009

The first column represents the ASHRAE 2% design temperature averaged for June - August.1 The second through fifth column is the resultant ambient temperature inside the raceway unloaded at specified heights above the roof.2 The right-hand column is the maximum dry-bulb design temperature for that city, based on 50 years distribution of weather data.2% Design Temp. Temperature inside conduit in direct sunlight Distance above roof. Up to: 1/2 3 12 36

Max Temp.

AL AL AL AL AL AL AL AL AL AL AL AL AL AL AK AK AK AK AK AK AK AK AK AK AK AK AK AK AK AK AK AK AK AK AK AZ AZ AZ AZ AZ AZ AZ

Alabama ANNISTON METROPOLITAN AP AUBURN-OPELIKA APT BIRMINGHAM CAIRNS FIELD FORT RUCKER CENTREVILLE WSMO DAUPHIN ISLAND DOTHAN MUNICIPAL AP GADSEN MUNI (AWOS) HUNTSVILLE HUNTSVILLE MAXWELL AFB MOBILE MONTGOMERY MUSCLE SHOALS REGIONAL AP TUSCALOOSA MUNICIPAL AP Alaska ADAK NAS AMBLER ANCHORAGE BARROW BARTER IS WSO AP DILLINGHAM (AMOS) FAIRBANKS/EIELSON AFB HOMER ARPT JUNEAU INT`L ARPT KENAI MUNICIPAL AP KETCHIKAN INTL AP KING SALMON KODIAK NOME NORTHWAY AIRPORT SEWARD TALKEETNA VALDEZ (Pioneer Field) WHITTIER WRANGEL Arizona DAVIS MONTHAN AFB DOUGLAS BISBEE-DOUGLAS IN FLAGSTAFF KINGMAN (AMOS) LUKE AFB/PHOENIX PHOENIX

94 92 94 95 87 95 93 94 97 93 95 94 95 57 75 70 56 56 69 80 64 73 69 71 71 67 67 77 69 76 69 70 70 104 101 85 100 110 110

154 152 154 155 147 155 153 154 157 153 155 154 155 117 135 130 116 116 129 140 124 133 129 131 131 127 127 137 129 136 129 130 130 164 161 145 160 170 170

134 132 134 135 127 135 133 134 137 133 135 134 135 97 115 110 96 96 109 120 104 113 109 111 111 107 107 117 109 116 109 110 110 144 141 125 140 150 150

124 122 124 125 117 125 123 124 127 123 125 124 125 87 105 100 86 86 99 110 94 103 99 101 101 97 97 107 99 106 99 100 100 134 131 115 130 140 140

119 117 119 120 112 120 118 119 122 118 120 119 120

105 104 106 105 96 105 106 106 105 103 106 107 103

82 76 100 N/A 95 84 81 78 81 N/A 94 87 105 97 89 81 98 87 94 85 96 85 96 88 92 85 92 87 102 90 94 91 101 91 94 86 95 83 95 86 129 126 110 125 135 135 116 110 97 114 124 122

-1-

2% Design Temp.

Temperature inside conduit in direct sunlight Distance above roof. Up to:

Max Temp.

3 1/2 12 36 Design Temperatures in Rooftop Condu

AZ AZ AZ AZ AR AR AR AR AR AR AR AR AR AR AR AR AR AR CA CA CA CA CA CA CA CA CA CA CA CA CA CA CA CA CA CA CA CA CA CA CA CA CA CA CA CA CA CA CA CA CA CA CA CA CA CA CA CA CA CA

PRESCOTT LOVE FIELD TUCSON WINSLOW MUNICIPAL YUMA (Yuma Intl Airport) Arkansas BATESVILLE (AWOS) BENTONVILLE BLYTHEVILLE AFB EL EAKER AFB DORADO GOODWIN FIELD FAYETTEVILLE DRAKE FIELD FT.SMITH HARRISON FAA AP JONESBORO MUNICIPAL LITTLE ROCK Adams Field ROGERS (AWOS) TEXARKANA WEBB FIELD WALNUT RIDGE (AWOS) California ALAMEDA NAS ARCATA BAKERSFIELD BEALE AFB BISHOP AIRPORT BLUE CANYON AP BLYTHE RIVERSIDE CO ARPT BURBANK-GLENDALE-PASADENA CAMARILLO (AWOS) CAMP PENDLETON MCAS CARLSBAD/PALOMAR CASTLE AFB DAGGETT EDWARDS AFB EL TORO MCAS EUREKA FRESNO FULLERTON MUNICIPAL GEORGE AFB HAYWARD AIR TERM IMPERIAL JACK NORTHROP FLD LANCASTER GEN WM FOX FIEL LEMOORE REEVES NAS LIVERMORE MUNICIPAL LOMPOC (AWOS) LONG BEACH LOS ANGELES MARCH AFB /RIVERSIDE MCCLELLAN AFB MODESTO CITY-COUNTY AP MONTAGUE SISKIYOU COUNTY AP MONTEREY PENINSULA MOUNT SHASTA MOUNTAIN VIEW MOFFETT FLD NAPA COUNTY AP NORTON AFB/SAN BERN OAKLAND ONTARIO PALM SPRINGS (Intl Airport) PASO ROBLES MUNICIPAL ARP

93 105 96 110 96 93 96 97 94 97 93 95 97 92 97 94 79 66 102 100 100 82 112 94 80 85 77 98 108 105 87 65 106 88 100 82 110 79 101 102 97 74 86 78 99 101 100 94 72 89 84 87 101 77 98 111 100

153 165 156 170 156 153 60 156 157 154 157 153 155 157 152 157 154 139 126 162 160 160 142 172 154 140 145 137 158 168 165 147 125 166 148 160 142 170 139 161 162 157 134 146 138 159 161 160 154 132 149 144 147 161 137 158 171 160

133 145 136 150 136 133 40 136 137 134 137 133 135 137 132 137 134 119 106 142 140 140 122 152 134 120 125 117 138 148 145 127 105 146 128 140 122 150 119 141 142 137 114 126 118 139 141 140 134 112 129 124 127 141 117 138 151 140

123 135 126 140 126 123 30 126 127 124 127 123 125 127 122 127 124 109 96 132 130 130 112 142 124 110 115 107 128 138 135 117 95 136 118 130 112 140 109 131 132 127 104 116 108 129 131 130 124 102 119 114 117 131 107 128 141 130

118 130 121 135 121 118 25 121 122 119 122 118 120 122 117 122 119

106 117 111 123 109 106 111 113 108 112 107 107 111 106 110 109

104 105 91 93 127 112 125 113 125 110 107 96 137 125 119 115 105 106 110 111 102 104 123 111 133 120 130 115 112 112 90 94 131 113 113 110 125 113 107 109 135 125 104 105 126 113 127 117 122 114 99 122 111 112 103 106 124 114 126 113 125 114 119 N/A 97 102 114 102 109 105 112 111 126 115 102 102 123 115 136 125 125 116

-2-

2% Design Temp.


Max Temp.

3 Design Temperatures in Rooftop Condu 1/2 12 36

CA CA CA CA CA CA CA CA CA CA CA CA CA CA CA CA CA CA CA CA CA CA CA CA CA CO CO CO CO CO CO CO CO CO CO CO CO CO CO CO CO CO CO CO CO CO CO CT CT CT CT CT CT DE DE DE DE FL FL

POINT ARENA POINT ARGUELLO POINT MUGU NF PT.PIEDRAS BLANCA PORTERVILLE (AWOS) RED BLUFF MUNICIPAL ARPT REDDING MUNICIPAL AIRPORT SACRAMENTO (Executive Airport) SACRAMENTO METROPOLITAN A SALINAS MUNICIPAL AP SAN DIEGO SAN DIEGO MIRAMAR NAS SAN DIEGO NORTH ISLAND NA SANDBERG SAN FRANCISCO SAN JOSE INTL AP SAN LUIS COUNTY REGIONAL SANTA BARBARA MUNICIPAL A SANTA MARIA SANTA ROSA STOCKTON METROPOLITAN ARP TRAVIS FIELD AFB TRAVIS FIELD TUSTIN MCAF UKIAH MUNICIPAL AP VISALIA MUNI (AWOS) Colorado AKRON WASHINGTON CO AP ALAMOSA ASPEN PITKIN CO SAR AURORA BUCKLEY FIELD ANGB COLORADO SPRINGS CORTEZ/MONTEZUMA CO CRAIG-MOFFAT (AMOS) DENVER DENVER/CENTENNIAL DURANGO/LA PLATA CO EAGLE FT. COLLINS FORT COLLINS (SAWRS) GRAND JUNCTION HAYDEN/YAMPA (AWOS) LA JUNTA MUNICIPAL AP LIMON MONTROSE COUNTY AP RIFLE/GARFIELD RGNL PUEBLO TRINIDAD LAS ANIMAS COUNT Connecticut BRIDGEPORT HARTFORD HARTFORD BRAINARD FD OXFORD (AWOS) WILLIMANTIC (ASOS) Delaware DOVER AFB GEORGETOWN/SUSSEX WILMINGTON Florida APALACHICOLA MUNI AP

60 64 76 68 100 103 71 99 100 76 79 85 77 90 78 90 82 78 77 92 100 97 88 98 99 93 84 83 92 89 92 89 93 91 89 87 93 89 96 86 99 91 92 94 97 92 87 90 90 86 89 91 91 91 91

120 124 136 128 160 163 131 159 160 136 139 145 137 150 138 150 142 138 137 152 160 157 148 158 159 153 144 143 152 149 152 149 153 151 149 147 153 149 156 146 159 151 152 154 157 152 147 150 150 146 149 151 151 151 151

100 104 116 108 140 143 111 139 140 116 119 125 117 130 118 130 122 118 117 132 140 137 128 138 139 133 124 123 132 129 132 129 133 131 129 127 133 129 136 126 139 131 132 134 137 132 127 130 130 126 129 131 131 131 131

90 94 106 98 130 133 101 129 130 106 109 115 107 120 108 120 112 108 107 122 130 127 118 128 129 123 114 113 122 119 122 119 123 121 119 117 123 119 126 116 129 121 122 124 127 122 117 120 120 116 119 121 121 121 121

85 89 101 93 125 128 96 124 125 101 104 110 102 115 103 115 107 103 102 117 125 122 113 123 124 118 109 108 117 114 117 114 118 116 114 112 118 114 121 111 124 116 117 119 122 117

83 83 105 96 111 118 120 114 113 106 107 105 108 103 105 108 110 110 107 111 114 115 115 117 109 107 95 95 105 100 104 101 105 103 101 99 106 100 108 100 111 104 101 104 107 103

112 105 115 103 115 N/A 111 100 114 101 116 116 116 116 105 104 104 102

-3-

2% Design Temp.


Max Temp.

3 Design Temperatures12 Rooftop Condu in 36 1/2

FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL FL GA GA GA GA GA GA GA GA GA GA GA GA GA

CAPE SAN BLAS CECIL FLD NA CRESTVIEW BOB SIKES AP CROSS CITY AIRPORT DESTIN FT. WALTON EGLIN AFB/VALPARAIS DAYTONA BEACH FT. LAUDERDALE FT. MYERS GAINESVILE HOMESTEAD AFB HURLBURT FIELD (AF) JACKSONVILLE JACKSONVILLE NAS JACKSONVILLE/CRAIG KEY WEST KEY WEST NAS MACDILL AFB/TAMPA MARATHON AIRPORT MAYPORT NS MELBOURNE REGIONAL AP MIAMI MIAMI/KENDALL-TAMIA MOLASSES REEF NASA SHUTTLE FCLTY OCALA MUNI (AWOS) ORLANDO EXECUTIVE AP ORLANDO ORLANDO SANFORD AIRPORT PANAMA CITY BAY CO PENSACOLA PENSACOLA REGIONAL AP SAINT PETERSBURG SARASOTA SOMBRERO KEY ST. AUGUSTINE ARPT ST. AUGUSTINE ST. PETERSBURG CLEAR SOUTHWEST FLORIDA TALLAHASSEE TAMPA TYNDALL AFB VENICE PIER VERO BEACH MUNICIPAL W. PALM BEACH WHITING FIELD NAAS Georgia ALBANY DOUGHERTY COUNTY A ATHENS ATLANTA (NEXRAD) ATLANTA HARTSFIELD INTL ARPT ATLANTA/FULTON CO. (FULTON CO BROW) AUGUSTA BUSH FIELD AUGUSTA/DANIEL FLD BRUNSWICK MALCOLM MCKINNO COLUMBUS FORT BENNING LAWSON HUNTER (AAF) MACON

86 95 95 93 90 92 92 91 93 93 91 91 94 95 93 90 90 92 91 94 92 91 92 86 91 93 93 93 94 92 93 93 93 91 87 91 88 93 93 95 92 90 87 91 91 94 96 94 92 93 93 96 95 92 96 96 95 96

146 155 155 153 150 152 152 151 153 153 151 151 154 155 153 150 150 152 151 154 152 151 152 146 151 153 153 153 154 152 153 153 153 151 147 151 148 153 153 155 152 150 147 151 151 154 156 154 152 153 153 156 155 152 156 156 155 156

126 135 135 133 130 132 132 131 133 133 131 131 134 135 133 130 130 132 131 134 132 131 132 126 131 133 133 133 134 132 133 133 133 131 127 131 128 133 133 135 132 130 127 131 131 134 136 134 132 133 133 136 135 132 136 136 135 136

116 125 125 123 120 122 122 121 123 123 121 121 124 125 123 120 120 122 121 124 122 121 122 116 121 123 123 123 124 122 123 123 123 121 117 121 118 123 123 125 122 120 117 121 121 124 126 124 122 123 123 126 125 122 126 126 125 126

111 95 120 105 120 105 118 103 115 N/A 117 103 117 102 116 104 118 100 118 106 116 99 116 102 119 104 120 106 118 102 115 95 115 97 117 100 116 N/A 119 105 117 102 116 99 117 104 111 90 116 101 118 101 118 102 118 101 119 103 117 104 118 106 118 105 118 101 116 102 112 92 116 N/A 113 101 118 101 118 101 120 105 117 99 115 104 112 93 116 101 116 99 119 103 121 119 117 118 118 121 120 117 121 121 120 121 106 108 103 105 105 109 108 102 106 108 106 107

-4-

2% Design Temp.


Max Temp.

3 1/2 Design Temperatures12 Rooftop Condu in 36

GA GA GA GA GA GA GA HI HI HI HI HI HI HI HI HI ID ID ID ID ID ID ID ID ID ID ID ID ID ID ID IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IL IN IN IN IN IN IN IN IN

MARIETTA DOBBINS AFB MOODY AFB/VALDOSTA ROME R B RUSSELL AP SAVANNAH VALDOSTA WB AIRPORT WARNER ROBINS AFB WAYCROSS WARE CO AP Hawaii BARBERS POINT NAS HILO HONOLULU KAHULUI KANEOHE BAY MCAS KONA INTL AT KEAHOL LIHUE MOLOKAI (AMOS) Idaho BOISE BURLEY MUNICIPAL ARPT CALDWELL (AWOS) CHALLIS (AMOS) COEUR D`ALENE (AWOS) ELK CITY (RAMOS) IDAHO FALLS JOSLIN FLD MAGIC VA LEWISTON NEZ PERCE CNTY A MCCALL ARPT MOUNTAIN HOME AFB MULLAN (AWRS) SALMON/LEMHI (AWOS) POCATELLO Illinois AURORA MUNICIPAL BELLEVILLE SCOTT AFB CAHOKIA/ST LOUIS CHICAGO CHICAGO MIDWAY AP DECATUR AIRPORT GLENVIEW NAS LAWRENCEVILLE MARSEILLES (AMOS) MATTOON/CHARLESTON MOLINE MOUNT VERNON (AWOS) PEORIA QUINCY MUNI BALDWIN FLD ROCKFORD SOUTHERN ILLINOIS SPRINGFIELD STERLING ROCKFALLS Univ of Illinois WI W. CHICAGO/DU PAGE Indiana EVANSVILLE FT. WAYNE GRISSOM AFB/PERU HUNTINGBURG INDIANAPOLIS LAFAYETTE PURDUE UNIV AP MONROE CO

93 95 95 95 95 96 95 90 84 89 88 84 86 84 86 96 92 95 90 89 92 90 93 96 84 98 86 88 93 90 94 94 91 91 92 92 92 92 90 92 93 92 92 91 92 92 90 91 90 93 90 91 91 90 92 90

153 155 155 155 155 156 155 150 144 149 148 144 146 144 146 156 152 155 150 149 152 150 153 156 144 158 146 148 153 150 154 154 151 151 152 152 152 152 150 152 153 152 152 151 152 152 150 151 150 153 150 151 151 150 152 150

133 135 135 135 135 136 135 130 124 129 128 124 126 124 126 136 132 135 130 129 132 130 133 136 124 138 126 128 133 130 134 134 131 131 132 132 132 132 130 132 133 132 132 131 132 132 130 131 130 133 130 131 131 130 132 130

123 125 125 125 125 126 125 120 114 119 118 114 116 114 116 126 122 125 120 119 122 120 123 126 114 128 116 118 123 120 124 124 121 121 122 122 122 122 120 122 123 122 122 121 122 122 120 121 120 123 120 121 121 120 122 120

118 120 120 120 120 121 120 115 109 114 113 109 111 109 111 121 117 120 115 114 117 115 118 121 109 123 111 113 118 115 119 119 116 116 117 117 117 117 115 117 118 117 117 116 117 117 115 116 115

107 106 107 106 107 109 108 99 93 96 97 93 95 91 101 111 109 111 106 107 108 105 108 111 99 113 97 104 106 105 106 106 106 107 104 105 104 106 101 106 102 105 106 104 103 104 105 104 104

118 104 115 104 116 106 116 N/A 115 102 117 105 115 103

-5-

2% Design Temp.


Max Temp.


IN IN IA IA IA IA IA IA IA IA IA IA IA IA IA IA IA IA IA IA IA IA IA IA IA IA IA IA IA KS KS KS KS KS KS KS KS KS KS KS KS KS KS KS KS KS KS KS KS KS KS KS KS KS KS KS KY KY KY KY

SOUTH BEND TERRE HAUTE HULMAN REGION Iowa AMES MUNI ARPT ANKENY REGIONAL ARP ATLANTIC BOONE MUNI BURLINGTON MUNICIPAL AP CARROLL CEDAR RAPIDS CHARITON CHARLES CITY CLARION CLINTON MUNI (AWOS) DES MOINES DUBUQUE REGIONAL AP ESTHERVILLE MUNI FAIR FIELD FORT DODGE (AWOS) KEOKUK MUNI MARSHALL TOWN MUNI MASON CITY OTTUMWA INDUSTRIAL AP SIOUX CITY SPENCER STORM LAKE WASHINGTON WATERLOO WEBSTER CITY Kansas CHANUTE MARTIN JOHNSON AP COFFEYBILLE MUNI CONCORDIA BLOSSER MUNI AP DODGE CITY ELKHART (AWOS) FORT RILEY MARSHALL AAF GARDEN CITY MUNICIPAL AP GOODLAND GREAT BEND (AWOS) HAYS MUNI (AWOS) HILL CITY MUNICIPAL AP LAWRENCE MUNI AP LIBERAL MUNI (AWOS) MANHATTAN RGNL MCCONNELL AFB MEDICINE LODGE ASOS NEWTON (AWOS) OLATHE/JOHNSON CO PARSONS/TRI CITY RUSSELL MUNICIPAL AP SALINA MUNICIPAL AP TOPEKA TOPEKA FORBES WICHITA MID CONTINENT AP WICHITA/COL JABARA WINFIELD/ARK CITY Kentucky BOWLING GREEN WARREN CO A CAPITAL CITY ARPT CINCINNATI NORTHERN KY AP

90 91 90 94 92 91 92 91 91 92 89 90 90 92 88 89 93 90 93 89 90 92 92 90 91 92 91 91 96 97 98 99 99 98 98 96 98 100 100 97 99 98 98 101 97 94 96 99 100 95 95 99 97 98 92 90 90

150 151 150 154 152 151 152 151 151 152 149 150 150 152 148 149 153 150 153 149 150 152 152 150 151 152 151 151 156 157 158 159 159 158 158 156 158 160 160 157 159 158 158 161 157 154 156 159 160 155 155 159 157 158 152 150 150

130 131 130 134 132 131 132 131 131 132 129 130 130 132 128 129 133 130 133 129 130 132 132 130 131 132 131 131 136 137 138 139 139 138 138 136 138 140 140 137 139 138 138 141 137 134 136 139 140 135 135 139 137 138 132 130 130

120 121 120 124 122 121 122 121 121 122 119 120 120 122 118 119 123 120 123 119 120 122 122 120 121 122 121 121 126 127 128 129 129 128 128 126 128 130 130 127 129 128 128 131 127 124 126 129 130 125 125 129 127 128 122 120 120

115 116 115 119 117 116 117 116 116 117 114 115 115 117 113 114 118 115 118 114 115 117 117 115 116 117 116 116

104 104 102 109 N/A N/A 106 N/A 104 105 N/A N/A 101 107 102 100 N/A 106 N/A 100 105 106 109 106 N/A N/A 106 101

121 111 122 113 123 113 124 111 124 N/A 123 110 123 110 121 108 123 112 125 113 125 111 122 112 124 110 123 114 123 113 126 115 122 110 119 109 121 112 124 114 125 113 120 111 120 112 124 112 122 113 123 112 117 115 115 106 107 104

-6-

2% Design Temp.


Max Temp.


KY KY KY KY KY KY KY KY LA LA LA LA LA LA LA LA LA LA LA LA LA LA LA LA LA ME ME ME ME ME ME ME ME ME ME ME MD MD MD MD MD MD MA MA MA MA MA MA MA MI MI MI MI MI MI MI MI MI MI MI

FORT CAMPBELL (AAF) FORT KNOX GOODMAN JACKSON JULIAN CARROLL AP LEXINGTON LOUISVILLE LOUISVILLE BOWMAN PADUCAH BARKLEY REGIONAL SOMERSET (AWOS) Louisiana ALEXANDRIA ESLER REGIONAL AP ALEXANDRIA INTERNATIONAL BARKSDALE AFB BATON ROUGE FORT POLK AAF GRAND ISLE LAFAYETTE REGIONAL AP LAKE CHARLES MONROE REGIONAL AP NEW ORLEANS NEW ORLEANS ALVIN CALLEND NEW ORLEANS LAKEFRONT AP PATTERSON MEMORIAL SALT POINT (RAMOS) SHREVEPORT SOUTHWEST PASS Maine AUBURN-LEWISTON AUGUSTA AIRPORT BANGOR BAR HARBOR (AWOS) BRUNSWICK NAS CARIBOU HOULTON INTL ARPT LORING AFB/LIMESTON MATINICUS ISLAND PORTLAND Maryland ANDREWS AFB BALTIMORE PATUXENT RIVER NAS SALISBURY THOMAS POINT Massachusetts BOSTON BUZZARDS BAY (LS) OTIS ANGB PROVINCETOWN (AWOS) SOUTH WEYMOUTH NAS WORCESTER Michigan ALPENA CHIPPEWA INTL (AWOS) COPPER HARBOR RAMOS DETROIT CITY AIRPORT DETROIT DETROIT WILLOW RUN AP ESCANABA (AWOS) FLINT GRAND RAPIDS HANCOCK HOUGHTON CO AP

93 92 89 91 93 92 94 93 96 95 96 94 95 88 93 93 96 93 92 93 92 91 98 87 86 83 86 80 85 83 85 83 67 86 93 93 91 92 86 90 74 83 82 90 85 87 82 79 90 89 90 81 88 88 83

153 152 149 151 153 152 154 153 156 155 156 154 155 148 153 153 156 153 152 153 152 151 158 147 146 143 146 140 145 143 145 143 127 146 153 153 151 152 146 150 134 143 142 150 145 147 142 139 150 149 150 141 148 148 143

133 132 129 131 133 132 134 133 136 135 136 134 135 128 133 133 136 133 132 133 132 131 138 127 126 123 126 120 125 123 125 123 107 126 133 133 131 132 126 130 114 123 122 130 125 127 122 119 130 129 130 121 128 128 123

123 122 119 121 123 122 124 123 126 125 126 124 125 118 123 123 126 123 122 123 122 121 128 117 116 113 116 110 115 113 115 113 97 116 123 123 121 122 116 120 104 113 112 120 115 117 112 109 120 119 120 111 118 118 113

118 117 114 116 118 117 119 118

105 107 101 105 105 107 104 107

121 111 120 108 121 109 119 103 120 108 113 95 118 103 118 105 121 106 118 102 117 100 118 105 117 106 116 N/A 123 113 112 96 111 108 111 105 110 108 110 108 92 111 118 118 116 117 111 115 99 108 107 115 110 112 107 104 115 114 115 106 113 113 108 101 100 100 96 100 97 99 97 82 101 106 106 104 103 97 103 85 98 97 102 96 104 102 98 104 103 102 99 102 100 102

-7-

2% Design Temp.


Max Temp.


MI MI MI MI MI MI MI MI MI MI MI MI MI MI MI MI MI MN MN MN MN MN MN MN MN MN MN MN MN MN MN MN MN MN MN MN MN MN MN MN MN MN MN MN MN MN MN MN MN MN MN MN MN MN MS MS MS MS MS MS

HARBOR BEACH (RAMOS) HOUGHTON LAKE IRONWOOD (AWOS) JACKSON REYNOLDS FIELD LANSING MANISTEE (AWOS) MARQUETTE COUNTY ARPT MENOMINEE (AWOS) (MOUNT CLEMENS) SELFRIDGE F MUSKEGON OSCODA WURTSMITH AFB PELLSTON EMMET COUNTY AP OAKLAND CO INTL SAGINAW TRI CITY INTL AP SAULT STE.MARIE STANNARD ROCK TRAVERSE CITY Minnesota AITKIN NDB (AWOS) ALBERT LEA (AWOS) ALEXANDRIA MUNICIPAL AP BEMIDJI MUNICIPAL CLOQUET (AWOS) CROOKSTON MUNI FLD DULUTH HARBOR (CGS) DULUTH ELY MUNI (AWOS) EVELETH MUNI (AWOS) FARIBAULT MUNI AWOS FERGUS FALLS (AWOS) GRAND RAPIDS (AWOS) HIBBING INTERNATIONAL FALLS LITCHFIELD MUNI LITTLE FALLS (AWOS) MANKATO MINNEAPOLIS-St Paul Intl Arpt MONTEVIDEO (AWOS) MORA MUNI (AWOS) MORRIS MUNI (AWOS) NEW ULM MUNI (AWOS) OWATONNA (AWOS) PEQUOT LAKE (AMOS) PIPESTONE (AWOS) REDWOOD FALLS MUNI ROCHESTER ROSEAU MUNI (AWOS) ST. CLOUD THIEF RIVER (AWOS) TOFTE (RAMOS) WHEATON NDB (AWOS) WILLMAR WINONA MUNI (AWOS) WORTHINGTON (AWOS) Mississippi COLUMBUS AFB GOLDEN TRIANGLE (AWOS) GREENWOOD LEFLORE ARPT HATTIESBURG LAUREL JACKSON

88 86 84 88 88 84 83 85 89 85 89 86 89 89 82 74 88 84 88 88 86 83 85 84 83 84 84 88 88 83 84 85 88 89 88 90 89 87 87 89 88 88 88 91 87 85 89 84 76 88 87 90 87 96 96 95 95 95

148 146 144 148 148 144 143 145 149 145 149 146 149 149 142 134 148 144 148 148 146 143 145 144 143 144 144 148 148 143 144 145 148 149 148 150 149 147 147 149 148 148 148 151 147 145 149 144 136 148 147 150 147 156 156 155 155 155

128 126 124 128 128 124 123 125 129 125 129 126 129 129 122 114 128 124 128 128 126 123 125 124 123 124 124 128 128 123 124 125 128 129 128 130 129 127 127 129 128 128 128 131 127 125 129 124 116 128 127 130 127 136 136 135 135 135

118 116 114 118 118 114 113 115 119 115 119 116 119 119 112 104 118 114 118 118 116 113 115 114 113 114 114 118 118 113 114 115 118 119 118 120 119 117 117 119 118 118 118 121 117 115 119 114 106 118 117 120 117 126 126 125 125 125

113 111 109 113 113 109 108 110 114 110 114 111 114 114 107 99 113 109 113 113 111 108 110 109 108 109 109 113 113 108 109 110 113 114 113 115 114 112 112 114 113 113 113 116 112 110 114 109 101 113 112 115 112 121 121 120 120 120

102 102 102 99 100 97 101 102 104 97 105 100 99 103 98 94 101 99 101 103 100 98 117 105 98 101 100 102 109 98 97 101 102 103 103 106 103 100 103 103 101 107 103 105 103 103 103 101 95 103 100 118 102 107 108 109 108 107

-8-

2% Design Temp.


Max Temp.

3 Design Temperatures12 Rooftop Condu in 36 1/2

MS MS MS MS MS MS MO MO MO MO MO MO MO MO MO MO MO MO MO MO MO MO MO MT MT MT MT MT MT MT MT MT MT MT MT MT MT MT MT MT MT NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE

KEESLER AFB MCCOMB PIKE COUNTY AP MERIDAN MERIDIAN NAAS NATCHEZ/HARDY (AWOS) TUPELO C D LEMONS ARPT Missouri CAPE GIRARDEAU MUNICIPAL COLUMBIA JEFFERSON CITY MEM JOPLIN MUNICIPAL AP KAISER MEM (AWOS) KANSAS CITY KANSAS CITY DOWNTOWN AP KIRKSVILLE REGIONAL AP POPLAR BLUFF (AMOS) SEDALIA MEMORIAL SPICKARD (AMOS) SPRINGFIELD ST LOUIS SPIRIT OF ST LOU ST. LOUIS VICHY ROLLA NATL ARPT WHITEMAN AFB Montana BILLINGS BOZEMAN BUTTE BERT MOONEY ARPT CUT BANK GLASGOW GLENDIVE (AWOS) GREAT FALLS GREAT FALLS INTL ARPT HAVRE CITY-COUNTY AP HELENA JORDAN (RAMOS) KALISPELL LEWISTOWN MALMSTROM AFB MILES CITY MUNICIPAL ARPT MISSOULA SIDNEY-RICHLAND Nebraska AINSWORTH ALLIANCE BEATRICE OFFUTT AFB/BELLEVUE BREWSTER FIELD ARPT COLUMBUS MUNI (AWOS) FREMONT MUNI AP GRAND ISLAND HASTINGS KEARNEY MUNI (AWOS) LINCOLN MCCOOK NORFOLK NORTH PLATTE O'NEILL/BAKER FIELD OMAHA OMAHA EPPLEY AIRFIELD SCOTTSBLUFF

93 94 95 96 92 95 94 93 94 95 94 94 96 93 93 95 94 93 94 95 94 95 93 89 86 86 93 93 88 90 93 91 95 88 88 91 97 91 92 94 96 96 94 94 92 92 95 95 93 96 100 93 95 93 92 94 95

153 154 155 156 152 155 154 153 154 155 154 154 156 153 153 155 154 153 154 155 154 155 153 149 146 146 153 153 148 150 153 151 155 148 148 151 157 151 152 154 156 156 154 154 152 152 155 155 153 156 160 153 155 153 152 154 155

133 134 135 136 132 135 134 133 134 135 134 134 136 133 133 135 134 133 134 135 134 135 133 129 126 126 133 133 128 130 133 131 135 128 128 131 137 131 132 134 136 136 134 134 132 132 135 135 133 136 140 133 135 133 132 134 135

123 124 125 126 122 125 124 123 124 125 124 124 126 123 123 125 124 123 124 125 124 125 123 119 116 116 123 123 118 120 123 121 125 118 118 121 127 121 122 124 126 126 124 124 122 122 125 125 123 126 130 123 125 123 122 124 125

118 119 120 121 117 120

105 105 107 108 102 108

119 106 118 110 119 106 120 109 119 111 119 110 121 111 118 108 118 108 120 110 119 N/A 118 108 119 107 120 107 119 107 120 109 118 109 114 105 111 100 111 104 118 108 118 109 113 N/A 115 105 118 109 116 106 120 111 113 102 113 103 116 108 122 113 116 105 117 108 119 114 121 111 121 109 119 111 119 107 117 105 117 N/A 120 113 120 108 118 108 121 112 125 116 118 110 120 111 118 113 117 109 119 111 120 110

-9-

2% Design Temp.


Max Temp.


NE NE NE NV NV NV NV NV NV NV NV NV NV NV NV NH NH NH NH NH NH NH NJ NJ NJ NJ NJ NJ NJ NJ NJ NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NY NY NY NY NY NY NY NY NY NY NY NY NY NY

SIDNEY MUNICIPAL AP TEKAMAH (ASOS) VALENTINE MILLER FIELD Nevada CALIENTE (AMOS) ELKO ELY FALLON NAAS LAS VEGAS LOVELOCK DERBY FIELD MERCURY DESERT ROCK AP NELLIS AFB RENO TONOPAH WINNEMUCCA New Hampshire CONCORD ISLE OF SHOALS (LS) LEBANON MANCHESTER MOUNT WASHINGTON PEASE AFB/PORTSMOUT New Jersey ATLANTIC CITY BELMAR-FARMINGDALE CAPE MAY CO MCGUIRE AFB MILLVILLE MUNICIPAL AP NEWARK TETERBORO AIRPORT TRENTON MERCER CO AP New Mexico ALAMOGORDO ALBUQUERQUE CANON-CLOVIS CARLSBAD CAVERN CITY AIR CLAYTON MUNICIPAL AIRPARK C CLOVIS MUNI (AWOS) FARMINGTON GALLUP HOLLOMAN AFB ROSWELL INDUSTRIAL AIR PA SIERRA BLANCA RGNL TAOS TRUTH OR CONSEQUENCES MUN WHITE SANDS TEST RG New York ALBANY BINGHAMTON BUFFALO DUNKIRK ELMIRA CORNING REGIONAL A FORT DRUM/WHEELER GALLOO ISLAND GLENS FALLS GRIFFISS AFB ISLIP, LI JAMESTOWN (AWOS) MASSENA AP NYC, JFK

94 92 96 98 93 90 98 108 98 103 109 94 94 96 89 80 88 91 60 88 91 90 88 92 91 93 91 91 100 94 96 101 93 96 94 90 98 99 87 87 97 98 88 84 86 81 89 85 77 87 88 87 82 87 88

154 152 156 158 153 150 158 168 158 163 169 154 154 156 149 140 148 151 120 148 151 150 148 152 151 153 151 151 160 154 156 161 153 156 154 150 158 159 147 147 157 158 148 144 146 141 149 145 137 147 148 147 142 147 148

134 132 136 138 133 130 138 148 138 143 149 134 134 136 129 120 128 131 100 128 131 130 128 132 131 133 131 131 140 134 136 141 133 136 134 130 138 139 127 127 137 138 128 124 126 121 129 125 117 127 128 127 122 127 128

124 122 126 128 123 120 128 138 128 133 139 124 124 126 119 110 118 121 90 118 121 120 118 122 121 123 121 121 130 124 126 131 123 126 124 120 128 129 117 117 127 128 118 114 116 111 119 115 107 117 118 117 112 117 118

119 117 121

112 108 115

123 N/A 118 107 115 102 123 N/A 133 118 123 111 128 116 134 120 119 106 119 104 121 111 114 105 113 116 85 113 101 96 100 107 72 100

116 104 115 103 113 99 117 106 116 103 118 106 116 105 116 N/A 125 N/A 119 106 121 111 126 116 118 105 121 108 119 108 115 102 123 111 124 112 112 99 112 98 122 110 123 110 113 109 111 106 114 110 102 112 113 112 107 112 113 101 99 98 97 103 98 90 100 100 104 98 99 104

- 10 -

2% Design Temp.


Max Temp.


NY NY NY NY NY NY NY NY NY NY NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC ND ND ND ND ND ND ND ND ND ND ND ND OH OH OH OH OH OH OH OH OH OH OH OH OH

NYC, LGA NIAGARA FALLS AF PLATTSBURGH AFB POUGHKEEPSIE DUTCHESS CO ROCHESTER STEWART FIELD (NEWBURGH) SYRACUSE UTICA ONEIDA COUNTY AP WATERTOWN AP WHITE PLAINS North Carolina ASHEVILLE CAPE HATTARAS CAPE LOOKOUT CHAROLOTTE CHERRY POINT MCAS DIAMOND SHOALS (LS) FAYETTEVILLE POPE AFB FORT BRAGG SIMMONS AAF FRYING PAN SHOALS SEYMOUR JOHNSON AFB GOLDSBORO GREENSBORO HATTERAS BILLY MITCHELL AP HICKORY REGIONAL AP JACKSONVILLE (AWOS) NEW BERN CRAVEN CO REGL A NEW RIVER MCAF PITT GREENVILLE ARP POPE AFB RALEIGH/DURHAM RICHMOND INTERNATIONAL AP SOUTHERN PINES AWOS WILMINGTON WINSTON-SALEM REYNOLDS AP North Dakota BISMARK DEVILS LAKE (AMOS) DICKINSON MUNICIPAL AP FARGO GRAND FORKS GRAND FORKS INTERNATIONAL JAMESTOWN MUNICIPAL ARPT LIDGERWOOD (RAMOS) MINOT MINOT AFB WILLISTON SLOULIN INTL AP Ohio AKRON/CANTON CINCINNATI MUNICIPAL AP L CLEVELAND COLUMBUS COLUMBUS RICKENBACKE DAYTON DAYTON WRIGHT PATTERSON A FINDLAY AIRPORT MANSFIELD OHIO STATE UNIVERSITY SOUTH BASS ISLAND TOLEDO

91 87 85 90 87 89 88 86 84 89 87 86 84 93 92 83 95 96 84 95 91 87 92 93 93 92 94 96 93 94 94 92 91 92 353 91 90 90 89 90 91 90 91 93 88 92 89 90 91 89 91 89 87 90 84 90

151 147 145 150 147 149 148 146 144 149 147 146 144 153 152 143 155 156 144 155 151 147 152 153 153 152 154 156 153 154 154 152 151 152 413 151 150 150 149 150 151 150 151 153 148 152 149 150 151 149 151 149 147 150 144 150

131 127 125 130 127 129 128 126 124 129 127 126 124 133 132 123 135 136 124 135 131 127 132 133 133 132 134 136 133 134 134 132 131 132 393 131 130 130 129 130 131 130 131 133 128 132 129 130 131 129 131 129 127 130 124 130

121 117 115 120 117 119 118 116 114 119 117 116 114 123 122 113 125 126 114 125 121 117 122 123 123 122 124 126 123 124 124 122 121 122 383 121 120 120 119 120 121 120 121 123 118 122 119 120 121 119 121 119 117 120 114 120

116 112 110 115 112 114 113 111 109 114 112 111 109 118 117 108 120 121 109 120 116 112 117 118 118 117 119 121 118 119 119 117 116 117 378 116 115 115 114 115 116 115 116 118 113 117 114 115 116 114 116 114 112 115 109 115

104 100 100 106 101 104 102 99 98 103 98 94 91 105 105 90 108 109 89 108 103 97 105 105 104 104 105 109 106 106 120 103 102 113 105 109 107 108 108 108 112 106 109 109 100 105 102 102 114 103 103 102 99 98 97 104

- 11 -

2% Design Temp.


Max Temp.


OH OH OK OK OK OK OK OK OK OK OK OK OK OK OK OK OR OR OR OR OR OR OR OR OR OR OR OR OR OR OR OR OR OR OR PA PA PA PA PA PA PA PA PA PA PA PA PA PA PA PA PA PA PA PA RI RI RI SC SC

YOUNGSTOWN ZANESVILLE MUNICIPAL AP Oklahoma ALTUS AFB CLINTON-SHERMAN FORT SILL POST FIELD AF GAGE AIRPORT HOBART MUNICIPAL AP LAWTON MUNICIPAL MCALESTER MUNICIPAL AP OKLAHOMA CITY OKLAHOMA CITY TINKER AFB OKLAHOMA CITY/WILEY PONCA CITY MUNICIPAL AP TULSA VANCE AFB/ENID Oregon ASTORIA AURORA STATE BAKER MUNICIPAL AP BURNS MUNICIPAL ARPT CAPE ARAGO (LS) CORVALLIS EUGENE KLAMATH FALLS INTL AP MEACHAM MEDFORD NEWPORT STATE BEACH NORTH BEND PENDLETON PORTLAND PORTLAND/HILLSBOR REDMOND SALEM SEXTON SUMMIT Pennsylvania ALLENTOWN ALTOONA BLAIR CO ARPT BRADFORD BUTLER CO. (AWOS) DUBOIS FAA AP ERIE FRANKLIN HARRISBURG JOHNSTOWN CAMBRIA COUNTY MIDDLETOWN HARRISBURG INT PHILADELPHIA PHILADELPHIA NE PITTSBURGH PITTSBURGH ALLEGHENY CO A READING SPAATZ FIELD WASHINGTON (AWOS) WILKES-BARRE/S WILLIAMSPORT WILLOW GROVE NAS Rhode Island BLOCK ISLAND STATE ARPT PROVIDENCE South Carolina ANDERSON COUNTY AP

88 89 102 100 99 99 101 101 97 98 97 98 99 97 99 72 90 91 91 63 91 89 89 85 97 62 68 94 89 90 91 90 82 90 87 83 87 85 86 84 91 84 92 92 92 89 89 91 88 88 90 92 80 87 94

148 149 162 160 159 159 161 161 157 158 157 158 159 157 159 132 150 151 151 123 151 149 149 145 157 122 128 154 149 150 151 150 142 150 147 143 147 145 146 144 151 144 152 152 152 149 149 151 148 148 150 152 140 147 154

128 129 142 140 139 139 141 141 137 138 137 138 139 137 139 112 130 131 131 103 131 129 129 125 137 102 108 134 129 130 131 130 122 130 127 123 127 125 126 124 131 124 132 132 132 129 129 131 128 128 130 132 120 127 134

118 119 132 130 129 129 131 131 127 128 127 128 129 127 129 102 120 121 121 93 121 119 119 115 127 92 98 124 119 120 121 120 112 120 117 113 117 115 116 114 121 114 122 122 122 119 119 121 118 118 120 122 110 117 124

113 114 127 125 124 124 126 126 122 123 122 123 124 122 124 97 115 116 116 88 116 114 114 110 122 87 93 119 114 115 116 115 107

100 103 117 112 113 110 115 114 112 112 112 112 115 113 113 97 108 108 108 86 110 108 106 101 113 98 95 111 107 108 107 108 98

115 102 112 102 108 94 112 99 110 98 111 100 109 95 116 106 109 99 117 107 117 105 117 105 114 102 114 102 116 N/A 113 N/A 113 101 115 103 117 103 105 94 112 N/A 119 106

- 12 -

2% Design Temp.


Max Temp.


SC SC SC SC SC SC SC SC SD SD SD SD SD SD SD SD SD SD SD SD SD SD SD TN TN TN TN TN TN TN TN TN TN TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX

BEAUFORT CHARLESTON COLUMBIA FLORENCE REGIONAL AP FOLLY BEACH GREENVILLE MYRTLE BEACH SUMTER SHAW AFB South Dakota ABERDEEN REGIONAL ARPT BROOKINGS (AWOS) BUFFALO CHAMBERLAIN (AMOS) CHAN GURNEY MUNI CUSTER (RAMOS) ELLSWORTH AFB HURON MITCHELL (AWOS) MOBRIDGE PIERRE RAPID CITY SIOUX FALLS WATERTOWN MUNICIPAL AP Tennessee BRISTOL CHATTANOOGA CROSSVILLE MEMORIAL AP DYERSBURG MUNICIPAL AP JACKSON MCKELLAR-SIPES RE KNOXVILLE MEMPHIS AP MILLINGTON MUNI ARP NASHVILLE Texas ABILENE ABILENE DYESS AFB ALICE INTL AP AMARILLO AMARILLO AUSTIN/BERGSTROM BEEVILLE CHASE NAAS BROWNSVILLE BURNET MUNI CAMP MABRY CHILDRESS MUNICIPAL AP COLLEGE STATION EASTERWOO CORPUS CHRISTI CORPUS CHRISTI NAS COTULLA FAA AP COX FLD DALHART MUNICIPAL AP DALLAS HENSLEY FIELD NAS DALLAS LOVE FIELD DALLAS/FT. WORTH DEL RIO INTERNATIONAL AP DRAUGHTON MILLER CEN EL PASO FORT WORTH MEACHAM FORT WORTH NAS FORT WORTH/ALLIANCE GALVESTON

94 93 96 95 87 93 91 95 91 87 94 95 91 86 94 93 92 93 97 95 91 89 89 94 88 93 94 92 95 97 93 98 100 99 96 98 99 95 97 98 100 98 95 92 101 97 97 98 99 99 100 98 100 96 99 100 91

154 153 156 155 147 153 151 155 151 147 154 155 151 146 154 153 152 153 157 155 151 149 149 154 148 153 154 152 155 157 153 158 160 159 156 158 159 155 157 158 160 158 155 152 161 157 157 158 159 159 160 158 160 156 159 160 151

134 133 136 135 127 133 131 135 131 127 134 135 131 126 134 133 132 133 137 135 131 129 129 134 128 133 134 132 135 137 133 138 140 139 136 138 139 135 137 138 140 138 135 132 141 137 137 138 139 139 140 138 140 136 139 140 131

124 123 126 125 117 123 121 125 121 117 124 125 121 116 124 123 122 123 127 125 121 119 119 124 118 123 124 122 125 127 123 128 130 129 126 128 129 125 127 128 130 128 125 122 131 127 127 128 129 129 130 128 130 126 129 130 121

119 118 121 120 112 118 116 120 116 112 119 120 116 111 119 118 117 118 122 120 116 114 114 119 113 118 119 117 120 122 118 123 125 124 121 123 124 120 122 123 125 123 120 117 126 122 122 123 124 124 125 123 125 121 124 125 116

108 104 109 107 98 106 106 108 112 102 118 117 108 100 113 114 115 116 117 113 111 106 101 105 101 102 104 104 106 108 105 110 113 114 109 111 111 106 114 111 117 111 107 106 112 110 108 110 112 113 111 110 112 113 110 115 102

- 13 -

2% Design Temp.


Max Temp.


TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX TX UT UT UT UT UT UT UT UT UT UT VT VT VT VT VT VT VA VA VA VA VA VA VA VA

HARLINGEN RIO GRANDE VALL HONDO MUNICIPAL AP HOUSTON HOUSTON ELLINGTON AFB HOUSTON WILLIAM P HOBBY A JUNCTION KIMBLE COUNTY AP KELLY AFB KILLEEN MUNI (AWOS) KINGSVILLE LAREDO INTL AP LAUGHLIN AFB LONGVIEW GREGG COUNTY AP LUBBOCK INTERNATIONAL AP LUFKIN ANGELINA CO MARFA AP MC GREGOR (AWOS) MCALLEN MILLER INTL AP MIDLAND/ODESSA NACOGDOCHES (AWOS) PALACIOS MUNICIPAL AP PINE SPRINGS GUADALUPE MO PORT ARANSAS PORT ARTHUR RANDOLPH AFB REESE AFB ROCKPORT/ARANSAS CO SABINE SAN ANGELO SAN ANTONIO SAN ANTONIO/STINSON SANDERSON (RAMOS) STEPHENVILLE CLARK FIELD VICTORIA WACO WICHITA FALLS WINK WINKLER COUNTY AP Utah CEDAR CITY LOGAN/CACHE AP MILFORD MUNICIPAL AP OGDEN HILL AFB PRICE/CARBON (RAMOS) SAINT GEORGE (AWOS) SALT LAKE CITY VERNAL WENDOVER USAF AUXILIARY F Vermont BURLINGTON MONTPELIER MORRISVILLE/STONE RUTLAND SPRINGFIELD/HARTNES Virginia ABINGTON CHESAPEAKE DANVILLE FAA DINWIDDIE CO FARMVILLE FORT BELVOIR/DAVISO HILLSVILLE

98 98 96 95 94 99 99 98 97 102 103 97 98 96 93 99 99 99 96 91 92 85 93 98 99 92 87 99 98 99 97 96 96 99 101 103 93 93 95 92 91 105 96 92 95 87 84 84 84 87 89 83 92 97 94 95 84

158 158 156 155 154 159 159 158 157 162 163 157 158 156 153 159 159 159 156 151 152 145 153 158 159 152 147 159 158 159 157 156 156 159 161 163 153 153 155 152 151 165 156 152 155 147 144 144 144 147 149 143 152 157 154 155 144

138 138 136 135 134 139 139 138 137 142 143 137 138 136 133 139 139 139 136 131 132 125 133 138 139 132 127 139 138 139 137 136 136 139 141 143 133 133 135 132 131 145 136 132 135 127 124 124 124 127 129 123 132 137 134 135 124

128 128 126 125 124 129 129 128 127 132 133 127 128 126 123 129 129 129 126 121 122 115 123 128 129 122 117 129 128 129 127 126 126 129 131 133 123 123 125 122 121 135 126 122 125 117 114 114 114 117 119 113 122 127 124 125 114

123 123 121 120 119 124 124 123 122 127 128 122 123 121 118 124 124 124 121 116 117 110 118 123 124 117 112 124 123 124 122 121 121 124 126 128 118 118 120 117 116 130 121 117 120 112 109 109 109 112 114 108 117 122 119 120 109

104 110 108 108 106 109 111 110 106 113 116 110 113 110 105 111 110 114 109 104 107 96 105 111 117 108 99 112 109 111 112 107 108 112 113 118 104 106 107 105 102 116 109 103 107 102 99 100 97 106 95 93 105 110 106 108 95

- 14 -

2% Design Temp.


Max Temp.


VA VA VA VA VA VA VA VA VA VA VA VA WA WA WA WA WA WA WA WA WA WA WA WA WA WA WA WA WA WA WA WA WA WA WA WA WA WA WA WA WA WA WA WV WV WV WV WV WV WV WV WV WV WI WI WI WI WI WI WI

HOT SPRINGS/INGALLS LANGLEY AFB LEESBURG/GODFREY LYNCHBURG MANASSAS MUNI (AWOS) NEWPORT NEWS NORFOLK OCEANA NAS QUANTICO MCAS ROANOKE WASHINGTON-DULLES INTL AP WASHINGTON REAGAN AP Washington ARLINGTON MUNI BELLINGHAM INTL AP BREMERTON NTNL AWOS DESTRUCTION ISLAND FAIRCHILD AFB FELTS FLD SPOKANE+D935 FRIDAY HARBOR GRAY AAF HANFORD HOQUIAM AP KELSO WB AP OLYMPIA OMAK PASCO PEARSON FLD PULLMAN/MOSCOW RGNL QUILLAYUTE SEATTLE BOEING FIELD SEATTLE/TACOMA SPOKANE STAMPEDE PASS TACOMA MCCHORD AFB TACOME NARROWS TATOOSH ISLAND WALLA WALLA WENATCHEE/PANGBORN WEST POINT (LS) WHIDBEY ISLAND NAS WILLIAM R FAIRCHILD YAKIMA West Virginia BECKLEY RALEIGH CO MEM AP BLUEFIELD/MERCER CO CHARLESTON ELKINS HARRISON MARION RGN HUNTINGTON MARTINSBURG MORGANTOWN PARKERSBURG WOOD COUNTY A Wisconsin DEVIL`S ISLAND EAU CLAIRE GREEN BAY LA CROSSE MADISON MANITOWAC MUNI AWOS

82 92 94 91 92 93 93 92 92 91 92 93 81 78 84 63 90 93 77 84 99 73 85 85 96 97 89 90 77 84 83 91 77 84 82 62 96 94 69 71 77 94 84 83 90 86 89 91 92 88 90 77 89 87 91 89 84

142 152 154 151 152 153 153 152 152 151 152 153 141 138 144 123 150 153 137 144 159 133 145 145 156 157 149 150 137 144 143 151 137 144 142 122 156 154 129 131 137 154 144 143 150 146 149 151 152 148 150 137 149 147 151 149 144

122 132 134 131 132 133 133 132 132 131 132 133 121 118 124 103 130 133 117 124 139 113 125 125 136 137 129 130 117 124 123 131 117 124 122 102 136 134 109 111 117 134 124 123 130 126 129 131 132 128 130 117 129 127 131 129 124

112 122 124 121 122 123 123 122 122 121 122 123 111 108 114 93 120 123 107 114 129 103 115 115 126 127 119 120 107 114 113 121 107 114 112 92 126 124 99 101 107 124 114 113 120 116 119 121 122 118 120 107 119 117 121 119 114

107 117 119 116 117 118 118 117 117 116 117 118 106 103 109 88 115 118 102 109 124 98 110 110 121 122 114 115 102 109 108 116 102 109 107 87 121 119 94 96 102 119 109 108 115 111 114 116 117 113 115 102 114 112 116 114 109

95 104 104 103 103 108 104 103 105 105 106 106 99 95 102 80 106 107 98 103 114 95 107 104 109 118 108 105 100 101 102 105 98 101 105 79 114 107 82 88 100 108 96 97 103 99 100 104 107 101 103 97 105 103 108 103 106

- 15 -

2% Design Temp.


Max Temp.


WI WI WI WI WI WI WY WY WY WY WY WY WY WY WY WY WY WY WY

MILWAUKEE PARK FALLS MUNI PHILLIPS/PRICE CO. SHEBOYGAN SHEBOYGAN WAUSAU Wyoming BIG PINEY CASPER CHEYENNE CODY MUNI (AWOS) GILLETTE (AMOS) JACKSON HOLE (AWOS) LANDER LARAMIE GENERAL BREES FIE ROCK SPRINGS ARPT WORLAND MUNICIPAL YELLOWSTONE LAKE (RAMOS) SHERIDAN

89 83 84 86 82 87 84 93 88 89 94 82 91 84 87 95 75 94 CANADA

149 143 144 146 142 147 144 153 148 149 154 142 151 144 147 155 135 154

129 123 124 126 122 127 124 133 128 129 134 122 131 124 127 135 115 134

119 113 114 116 112 117 114 123 118 119 124 112 121 114 117 125 105 124

114 105 108 N/A 109 99 111 N/A 107 99 112 102 109 118 113 114 119 107 116 109 112 120 100 119 97 104 100 103 109 97 103 96 100 110 91 109

ALB ALB ALB ALB ALB BC BC BC MAN MAN NB NB NB NB NF NF NF NS NS NS ON ON ON ON ON ON PEI QUE QUE QUE QUE SAS SAS SAS SAS YUK YUK

Alberta Banff Calgary AP Edmonton City Ctr Jasper British Columbia Vancouver AP Victoria AP Manitoba Winnepeg AP New Brunswick Fredericton Moncton St. John Newfoundland & Labrador Gander AP St. John's Nova Scotia Halifax AP Yarmouth Ontario Gore Bay London AP Sault Ste. Marie Toronto AP Thunder Bay Prince Edward Island Charlottetown Quebec Gaspe Montreal Int AP Trois Rivieres Sakatchewan Hudson Bay Moose Jaw Saskatoon Int AP Yukon Terr Whitehorse

79 82 80 80 76 78 86 84 82 78 77 75 80 72 80 85 82 74 83 79 81 84 81 83 89 86 77

139 142 140 140 136 138 146 144 142 138 137 135 140 132 140 145 142 134 143 139 141 144 141 143 149 146 137

119 122 120 120 116 118 126 124 122 118 117 115 120 112 120 125 122 114 123 119 121 124 121 123 129 126 117

109 112 110 110 106 108 116 114 112 108 107 105 110 102 110 115 112 104 113 109 111 114 111 113 119 116 107

104 107 105 105 101 103 111 109 107 103 102 100 105 97 105 110 107 99 108 104 106 109 106 108 114 111 102

87 89 88 87 83 87 93 92 90 85 85 82 88 79 86 91 88 93 91 86 90 89 86 91 97 95 84

- 16 -

Footnotes1. ASHRAE bases its warm-season temperature conditions for each city on annual percentiles of 0.4%, 2 %, 5% and 10%. As an example, the June 2.0% dry-bulb design temperature for Atlanta is 91.7F. Therefore, based on a 30-day month (i.e., 720 hours), the actual temperatures can be expected to exceed 91.7F for total of 14 hours a month. The corresponding 5.0% design temperature (89.3F) can be expected to be exceeded for 36 hours a month; while the 0.4% design temperature (94.7F) can be expected to be exceeded for 3 hours a month. 2. Calculations shown in the table are based on ASHRAE 2% design temperatures for 10 years of data* and CDA research covering over five years of monitoring air temperatures inside rooftop raceways.** The table uses the average of the June through August dry-bulb design temperaturesgenerally the hottest months of the yearin calculating the design temperatures in this table. All temperatures are rounded to the nearest whole number. The results can then be used to apply the correction factors in Table 310.15(B)(2)(a) of the National Electrical Code. *ASHRAE has compiled 10 years of dry-bulb design temperature data in the 2009 ASHRAE Handbook of Fundamentals (The American Society of Heating, Refrigerating and Air-Conditioning Engineers. Chapter 14, Climatic Design Information). The table covers most of the U.S. and selected Canadian weather station locations included in the ASHRAE Handbook. The complete Handbook can be ordered directly from ASHRAE (www.ashrae.org). (CDA recommends the CD format, Product Code 81092, to obtain complete climatic conditions.) **The research is described in an article written for the International Association of Electrical InspectorsIAEI News, Effect of Rooftop Exposure on Ambient Temperatures Inside Conduits, January-February, 2006, and published in IEEE Transactions on Industry Applications, Vol. 44, No. 6, November/December 2008. The data and this table are available on www.copper.org, or in print from the Copper Development Association.

A6116 07/11

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ashrae temperatures rooftop

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