ENGINEERING MANUAL OF AUTOMATIC CONTROL
GENERAL ENGINEERING DATA
473
HEATING DATA
Table 1. Heating Data.
Heating Degree Days
Heating Annual
Design Mean
City Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Total
Temperature Temperature
Anchorage, AK 1553 1296 1218 876 570 318 205 270 498 942 1314 1510 10570 –18 35.9
Atlanta, GA 744 566 365 138 27 0 0 0 10 138 367 636 2991 22 61.3
Baltimore, MD 1029 846 648 348 108 0 0 0 29 276 546 877 4707 13 55.1
Boston, MA 1128 972 818 507 221 32 0 6 72 321 591 973 5641 9 51.3
Brownsville, TX 232 135 41 0 00000050177635 39 73.8
Buffalo, NY 1283 1134 967 594 279 59 5 17 130 431 735 1113 6747 6 47.7
Charlotte, NC 797 630 437 183 42 00061613916943341 22 60.1
Chicago, IL 1364 1109 862 492 235 35 5 19 84 391 750 1190 6536 2 49.0
Dallas-Ft. Worth, TX 670 484 286 75 00000512755662407 22 65.4
Des Moines, IA 1414 1128 859 428 165 10 0 11 71 372 780 1259 6497 –5 49.9
Denver, CO 1094 885 806 504 253 71 0 0 144 429 780 1054 6020 1 50.3
Detroit, MI 1305 1109 908 531 243 38 0 16 102 435 744 1138 6569 6 48.6
Duluth, MN 1798 1476 1259 792 445 170 60 113 329 660 1098 1618 9818 –16 38.5
Fairbanks, AK 2328 1921 1674 1029 508 182 123 267 585 1237 1869 2217 13940 –47 26.9
Flagstaff, AZ 1125 938 921 681 453 187 29 65 237 552 846 1097 7131 4 45.8
Hartford, CT 1252 1050 853 489 194 20 0 6 96 397 693 1101 6151 7 49.9
Indianapolis, IN 1225 991 732 378 165 5 0 6 58 338 660 1057 5615 2 52.3
Juneau, AK 1265 1025 1001 759 558 360 279 310 468 707 990 1175 8897 1 40.6
Kansas City, MO 1218 946 691 325 135 7 0 6 56 279 657 1073 5393 6 53.6
Los Angeles, AP, CA 258 215 224 158 96 54 9 5 22 32 127 258 1458 43 63.0
Los Angeles, C.O., CA 222 170 169 128 72 35 0 0 10 17 105 226 1154 40 66.0
Miami, FL 88 51 14 0 000000641200 47 75.9
Milwaukee, WI 1429 1176 983 618 338 82 14 27 123 456 819 1259 7324 –4 46.1
Minneapolis-St. Paul, MN 1649 1319 1054 558 244 41 11 22 167 502 954 1460 7981 –12 44.9
New York (La Guardia), NY 1045 890 729 405 144 8 0 0 29 252 528 880 4910 15 54.3
Oklahoma City, OK 902 675 464 176 31 0 0 0 15 137 462 797 3659 13 60.0
Omaha (North), NE 1380 1095 846 414 155 11 0 11 90 363 789 1259 6413 –3 50.1
Philadelphia, PA 1073 896 701 378 123 5 0 0 32 283 558 905 4954 14 54.3
Phoenix, AZ 362 227 182 75 80000171343451350 34 72.6
Pittsburgh, PA 1206 1016 794 462 214 36 6 14 100 400 681 1039 5968 5 50.3
Portland, OR 787 599 549 420 249 91 28 35 102 326 567 769 4522 23 53.6
Salt Lake City, UT 1150 865 719 464 215 51 0 0 108 373 726 1094 5765 8 52.0
San Francisco, C.O., CA 431 297 313 275 260 198 187 156 116 123 237 412 3005 40 57.0
Seattle, (SEA-TAC), WA 772 602 601 474 307 144 58 65 156 378 591 760 4908 26 52.0
St. Louis, MO 1107 871 617 266 111 0 0 0 21 237 564 964 4758 8 56.1
Syracuse, NY 1321 1148 964 579 268 61 10 28 139 443 735 1138 6834 2 47.4
Tampa, FL 234 160 81 7 00000072171725 40 72.3
Washington (Dulles), D.C. 1066 879 676 369 140 7 0 0 44 319 588 918 5006 N/A 53.8
Washington (Nat’l), D.C. 942 770 552 264 60 0 0 0 14 195 456 794 4047 17 58.0
Wichita, KS 1101 846 608 278 102 5 0 0 29 221 609 992 4791 7 56.2
AP = Airport
C.O. = City Office
Heating Degree Days and Annual Mean Temperature are excerpts from Comparative Climatic Data for the United States through 1995, National
Climatic Data Center, Asheville, NC.
Heating Design Temperatures are excerpts from ASHRAE Handbook 1993 Fundamentals.
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