CODES

ADOPTS WITH AMENDMENTS:

International Plumbing Code 2015 (IPC 2015)

This appendix is informative and is not part of the code.

TABLE D101 DEGREE DAY AND DESIGN TEMPERATURESa FOR CITIES IN THE UNITED STATES

STATE STATIONb HEATING
DEGREE DAYS
(yearly total)
DESIGN TEMPERATURES DEGREES NORTH LATITUDEc
Winter Summer
971/2% Dry bulb 21/2% Wet bulb 21/2%
AL Birmingham 2,551 21 94 77 33°30″
Huntsville 3,070 16 96 77 34°40″
Mobile 1,560 29 93 79 30°40″
Montgomery 2,291 25 95 79 32°20″
AK Anchorage 10,864 -18 68 59 61°10″
Fairbanks 14,279 -47 78 62 64°50″
Juneau 9,075 1 70 59 58°20″
Nome 14,171 -27 62 56 64°30″
AZ Flagstaff 7,152 4 82 60 35°10″
Phoenix 1,765 34 107 75 33°30″
Tuscon 1,800 32 102 71 33°10″
Yuma 974 39 109 78 32°40″
AR Fort Smith 3,292 17 98 79 35°20″
Little Rock 3,219 20 96 79 34°40″
Texarkana 2,533 23 96 79 33°30″
CA Fresno 2,611 30 100 71 36°50″
Long Beach 1,803 43 80 69 33°50″
Los Angeles 2,061 43 80 69 34°00″
Los Angelesd 1,349 40 89 71 34°00″
Oakland 2,870 36 80 64 37°40″
Sacramento 2,502 32 98 71 38°30″
San Diego 1,458 44 80 70 32°40″
San Francisco 3,015 38 77 64 37°40″
San Franciscod 3,001 40 71 62 37°50″
CO Alamosa 8,529 -16 82 61 37°30″
Colorado Springs 6,423 2 88 62 38°50″
Denver 6,283 1 91 63 39°50″
Grand Junction 5,641 7 94 63 39°10″
Pueblo 5,462 0 95 66 38°20″
CT Bridgeport 5,617 9 84 74 41°10″
Hartford 6,235 7 88 75 41°50″
New Haven 5,897 7 84 75 41°20″
DE Wilmington 4,930 14 89 76 39°40″
DC Washington 4,224 17 91 77 38°50″
FL Daytona 879 35 90 79 29°10″
Fort Myers 442 44 92 79 26°40″
Jacksonville 1,239 32 94 79 30°30″
Key West 108 57 90 79 24°30″
Miami 214 47 90 79 25°50″
Orlando 766 38 93 78 28°30″
Pensacola 1,463 29 93 79 30°30″
Tallahassee 1,485 30 92 78 30°20″
Tampa 683 40 91 79 28°00″
West Palm Beach 253 45 91 79 26°40″


(continued)

TABLE D101‒continued DEGREE DAY AND DESIGN TEMPERATURESa FOR CITIES IN THE UNITED STATES

STATE STATIONb HEATING
DEGREE DAYS
(yearly total)
DESIGN TEMPERATURES DEGREES NORTH
LATITUDEc
Winter Summer
971/2% Dry bulb 21/2% Wet bulb 21/2%
GA Athens 2,929 22 92 77 34°00″
Atlanta 2,961 22 92 76 33°40″
Augusta 2,397 23 95 79 33°20″
Columbus 2,383 24 93 78 32°30″
Macon 2,136 25 93 78 32°40″
Rome 3,326 22 93 78 34°20″
Savannah 1,819 27 93 79 32°10″
HI Hilo 0 62 83 74 19°40″
Honolulu 0 63 86 75 21°20″
ID Boise 5,809 10 94 66 43°30″
Lewiston 5,542 6 93 66 46°20″
Pocatello 7,033 -1 91 63 43°00″
IL Chicago (Midway) 6,155 0 91 75 41°50″
Chicago (O'Hare) 6,639 -4 89 76 42°00″
Chicagod 5,882 2 91 77 41°50″
Moline 6,408 -4 91 77 41°30″
Peoria 6,025 -4 89 76 40°40″
Rockford 6,830 -4 89 76 42°10″
Springfield 5,429 2 92 77 39°50″
IN Evansville 4,435 9 93 78 38°00″
Fort Wayne 6,205 1 89 75 41°00″
Indianapolis 5,699 2 90 76 39°40″
South Bend 6,439 1 89 75 41°40″
IA Burlington 6,114 -3 91 77 40°50″
Des Moines 6,588 -5 91 77 41°30″
Dubuque 7,376 -7 88 75 42°20″
Sioux City 6,951 -7 92 77 42°20″
Waterloo 7,320 -10 89 77 42°30″
KS Dodge City 4,986 5 97 73 37°50″
Goodland 6,141 0 96 70 39°20″
Topeka 5,182 4 96 78 39°00″
Wichita 4,620 7 98 76 37°40″
KY Covington 5,265 6 90 75 39°00″
Lexington 4,683 8 91 76 38°00″
Louisville 4,660 10 93 77 38°10″
LA Alexandria 1,921 27 94 79 31°20″
Baton Rouge 1,560 29 93 80 30°30″
Lake Charles 1,459 31 93 79 30°10″
New Orleans 1,385 33 92 80 30°00″
Shreveport 2,184 25 96 79 32°30″
ME Caribou 9,767 -13 81 69 46°50″
Portland 7,511 -1 84 72 43°40″
MD Baltimore 4,654 13 91 77 39°10″
Baltimored 4,111 17 89 78 39°20″
Frederick 5,087 12 91 77 39°20″


(continued)

TABLE D101‒continued DEGREE DAY AND DESIGN TEMPERATURESa FOR CITIES IN THE UNITED STATES

STATE STATIONb HEATING
DEGREE DAYS
(yearly total)
DESIGN TEMPERATURES DEGREES NORTH
LATITUDEc
Winter Summer
971/2% Dry bulb 21/2% Wet bulb 21/2%
MA Boston 5,634 9 88 74 42°20″
Pittsfield 7,578 -3 84 72 42°30″
Worcester 6,969 4 84 72 42°20″
MI Alpena 8,506 -6 85 72 45°00″
Detroit (City) 6,232 6 88 74 42°20″
Escanabad 8,481 -7 83 71 45°40″
Flint 7,377 1 87 74 43°00″
Grand Rapids 6,894 5 88 74 42°50″
Lansing 6,909 1 87 74 42°50″
Marquetted 8,393 -8 81 70 46°30″
Muskegon 6,696 6 84 73 43°10″
Sault Ste. Marie 9,048 -8 81 70 46°30″
MN Duluth 10,000 -16 82 70 46°50″
Minneapolis 8,382 -12 89 5 44°50″
Rochester 8,295 -12 87 75 44°00″
MS Jackson 2,239 25 95 78 32°20″
Meridian 2,289 23 95 79 32°20″
Vicksburgd 2,041 26 95 80 32°20″
MO Columbia 5,046 4 94 77 39°00″
Kansas City 4,711 6 96 77 39°10″
St. Joseph 5,484 2 93 79 39°50″
St. Louis 4,900 6 94 77 38°50″
St. Louisd 4,484 8 94 77 38°40″
Springfield 4,900 9 93 77 37°10″
MT Billings 7,049 -10 91 66 45°50″
Great Falls 7,750 -15 88 62 47°30″
Helena 8,129 -16 88 62 46°40″
Missoula 8,125 -6 88 63 46°50″
NE Grand Island 6,530 -3 94 74 41°00″
Lincolnd 5,864 -2 95 77 40°50″
Norfolk 6,979 -4 93 77 42°00″
North Platte 6,684 -4 94 72 41°10″
Omaha 6,612 -3 91 77 41°20″
Scottsbluff 6,673 -3 92 68 41°50″
NV Elko 7,433 -2 92 62 40°50″
Ely 7,733 -4 87 59 39°10″
Las Vegas 2,709 28 106 70 36°10″
Reno 6,332 10 92 62 39°30″
Winnemucca 6,761 3 94 62 40°50″
NH Concord 7,383 -3 87 73 43°10″
NJ Atlantic City 4,812 13 89 77 39°30″
Newark 4,589 14 91 76 40°40″
Trentond 4,980 14 88 76 40°10″
NM Albuquerque 4,348 16 94 65 35°00″
Raton 6,228 1 89 64 36°50″
Roswell 3,793 18 98 70 33°20″
Silver City 3,705 10 94 64 32°40″
p

(continued)

TABLE D101‒continued DEGREE DAY AND DESIGN TEMPERATURESa FOR CITIES IN THE UNITED STATES

STATE STATIONb HEATING
DEGREE DAYS
(yearly total)
DESIGN TEMPERATURES DEGREES NORTH
LATITUDEc
Winter Summer
971/2% Dry bulb 21/2% Wet bulb 21/2%
NY Albany 6,875 -1 88 74 42°50″
Albanyd 6,201 1 88 74 42°50″
Binghamton 7,286 1 83 72 42°10″
Buffalo 7,062 6 85 73 43°00″
NY (Central Park)d 4,871 15 89 75 40°50″
NY (Kennedy) 5,219 15 87 75 40°40″
NY(LaGuardia) 4,811 15 89 75 40°50″
Rochester 6,748 5 88 73 43°10″
Schenectadyd 6,650 1 87 74 42°50″
Syracuse 6,756 2 87 73 43°10″
NC Charlotte 3,181 22 93 76 35°10″
Greensboro 3,805 18 91 76 36°10″
Raleigh 3,393 20 92 77 35°50″
Winston-Salem 3,595 20 91 75 36°10″
ND Bismarck 8,851 -19 91 71 46°50″
Devils Laked 9,901 -21 88 71 48°10″
Fargo 9,226 -18 89 74 46°50″
Williston 9,243 -21 88 70 48°10″
OH Akron-Canton 6,037 6 86 73 41°00″
Cincinnatid 4,410 6 90 75 39°10″
Cleveland 6,351 5 88 74 41°20″
Columbus 5,660 5 90 75 40°00″
Dayton 5,622 4 89 75 39°50″
Mansfield 6,403 5 87 74 40°50″
Sanduskyd 5,796 6 91 74 41°30″
Toledo 6,494 1 88 75 41°40″
Youngstown 6,417 4 86 73 41°20″
OK Oklahoma City 3,725 13 97 77 35°20″
Tulsa 3,860 13 98 78 36°10″
OR Eugene 4,726 22 89 67 44°10″
Medford 5,008 23 94 68 42°20″
Portland 4,635 23 85 67 45°40″
Portlandd 4,109 24 86 67 45°30″
Salem 4,754 23 88 68 45°00″
PA Allentown 5,810 9 88 75 40°40″
Erie 6,451 9 85 74 42°10″
Harrisburg 5,251 11 91 76 40°10″
Philadelphia 5,144 14 90 76 39°50″
Pittsburgh 5,987 5 86 73 40°30″
Pittsburghd 5,053 7 88 73 40°30″
Readingd 4,945 13 89 75 40°20″
Scranton 6,254 5 87 73 41°20″
Williamsport 5,934 7 89 74 41°10″
RI Providence 5,954 9 86 74 41°40″
SC Charleston 2,033 27 91 80 32°50″
Charlestond 1,794 28 92 80 32°50″
Columbia 2,484 24 95 78 34°00″


(continued)

TABLE D101‒continued DEGREE DAY AND DESIGN TEMPERATURESa FOR CITIES IN THE UNITED STATES

STATE STATIONb HEATING
DEGREE DAYS
(yearly total)
DESIGN TEMPERATURES DEGREES NORTH
LATITUDEc
Winter Summer
971/2% Dry bulb 21/2% Wet bulb 21/2%
SD Huron 8,223 -14 93 75 44°30″
Rapid City 7,345 -7 92 69 44°00″
Sioux Falls 7,839 -11 91 75 43°40″
TN Bristol 4,143 14 89 75 36°30″
Chattanooga 3,254 18 93 77 35°00″
Knoxville 3,494 19 92 76 35°50″
Memphis 3,232 18 95 79 35°00″
Nashville 3,578 14 94 77 36°10″
TX Abilene 2,624 20 99 74 32°30″
Austin 1,711 28 98 77 30°20″
Dallas 2,363 22 100 78 32°50″
El Paso 2,700 24 98 68 31°50″
Houston 1,396 32 94 79 29°40″
Midland 2,591 21 98 72 32°00″
San Angelo 2,255 22 99 74 31°20″
San Antonio 1,546 30 97 76 29°30″
Waco 2,030 26 99 78 31°40″
Wichita Falls 2,832 18 101 76 34°00″
UT Salt Lake City 6,052 8 95 65 40°50″
VT Burlington 8,269 -7 85 72 44°30″
VA Lynchburg 4,166 16 90 76 37°20″
Norfolk 3,421 22 91 78 36°50″
Richmond 3,865 17 92 78 37°30″
Roanoke 4,150 16 91 74 37°20″
WA Olympia 5,236 22 83 66 47°00″
Seattle-Tacoma 5,145 26 80 64 47°30″
Seattled 4,424 27 82 67 47°40″
Spokane 6,655 2 90 64 47°40″
WV Charleston 4,476 11 90 75 38°20″
Elkins 5,675 6 84 72 38°50″
Huntington 4,446 10 91 77 38°20″
Parkersburgd 4,754 11 90 76 39°20″
WI Green Bay 8,029 -9 85 74 44°30″
La Crosse 7,589 -9 88 75 43°50″
Madison 7,863 -7 88 75 43°10″
Milwaukee 7,635 -4 87 74 43°00″
WY Casper 7,410 -5 90 61 42°50″
Cheyenne 7,381 -1 86 62 41°10″
Lander 7,870 -11 88 63 42°50″
Sheridan 7,680 -8 91 65 44°50″

a. All data were extracted from the 1985 ASHRAE Handbook, Fundamentals Volume.
b. Design data developed from airport temperature observations unless noted.
c. Latitude is given to the nearest 10 minutes. For example, the latitude for Miami, Florida, is given as 25°50″, or 25 degrees 50 minutes.
d. Design data developed from office locations within an urban area, not from airport temperature observations.
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