Heating Degree Days 2009
Month Allentown Normal Allentown 2009 Erie Normal Erie 2009 Harrisburg Normal Harrisburg 2009 Philadelphia Normal Philadelphia 2009 Pittsburgh Normal Pittsburgh 2009 Scranton Normal Scranton 2009 State College Normal State College 2009 Williamsport Normal Williamsport 2009
January 1147 1283 1209 1407 1076 1205 1020 1107 1163 1326 1214 1364 1211 1313 1201 1329
February 966 916 1074 955 901 853 858 774 979 940 1040 958 1030 952 1014 936
March 784 765 926 777 723 709 681 653 788 699 866 783 871 786 824 720
April 450 428 585 453 390 371 362 320 462 408 512 429 505 459 471 388
May 197 166 269 171 148 120 113 79 200 151 219 189 220 196 196 168
June 26 34 75 37 14 25 12 15 43 22 53 43 52 44 38 29
July 15 2 0 3 0 0 0 0 6 5 0 5 10 6 6 0
August 8 2 18 12 1 2 2 0 13 9 18 11 20 3 12 5
September 95 96 123 56 52 48 39 19 105 55 138 132 140 101 116 76
October 374 414 398 388 338 353 269 269 397 437 431 489 437 479 417 403
November 657 542 684 513 621 499 545 417 677 529 711 590 720 588 708 521
December 985 1037 1016 1027 937 966 857 881 996 1046 1047 1099 1054 1075 1033 1009
Cooling Degree Days 2009
Month Allentown Normal Allentown 2009 Erie Normal Erie 2009 Harrisburg Normal Harrisburg 2009 Philadelphia Normal Philadelphia 2009 Pittsburgh Normal Pittsburgh 2009 Scranton Normal Scranton 2009 State College Normal State College 2009 Williamsport Normal Williamsport 2009
January 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
February 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
March 1 0 1 0 0 0 2 0 0 0 1 0 0 0 0 0
April 6 23 5 32 1 36 10 42 10 31 5 32 0 27 6 26
May 45 30 10 27 54 49 72 86 37 42 36 20 33 35 39 28
June 164 116 105 132 186 186 234 205 143 126 113 92 109 104 135 141
July 288 169 199 163 337 255 395 347 244 147 220 110 203 115 251 161
August 235 261 166 251 279 334 351 418 351 227 174 183 160 208 206 254
September 83 34 63 76 87 74 152 119 152 58 57 13 29 27 68 49
October 7 1 6 0 11 0 19 10 19 0 4 0 4 0 4 0
November 0 0 0 0 0 0 2 0 2 0 0 0 0 0 0 0
December 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0