| Heating Degree
Day Normals
(base 65 f ) based on observation period 1961-1990 |
Jul | Aug | Sep | Oct | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Annual |
| Maine Locations: | |||||||||||||
| Augusta | 15 | 36 | 190 | 505 | 822 | 1271 | 1426 | 1212 | 1026 | 651 | 319 | 77 | 7550 |
| Bangor | 21 | 42 | 219 | 533 | 849 | 1302 | 1473 | 1266 | 1079 | 693 | 363 | 90 | 7930 |
| Belfast | 14 | 29 | 180 | 484 | 780 | 1206 | 1352 | 1168 | 995 | 657 | 344 | 88 | 7297 |
| Bridgton 3 NW | 19 | 61 | 238 | 564 | 873 | 1318 | 1482 | 1263 | 1082 | 708 | 347 | 102 | 8057 |
| Brunswick | 7 | 40 | 183 | 499 | 798 | 1218 | 1389 | 1184 | 1008 | 651 | 353 | 90 | 7420 |
| Corinna | 24 | 67 | 263 | 601 | 927 | 1414 | 1587 | 1364 | 1132 | 723 | 360 | 101 | 8562 |
| Eastport | 93 | 85 | 243 | 518 | 786 | 1181 | 1339 | 1170 | 1045 | 729 | 468 | 219 | 7876 |
| Ellsworth | 17 | 45 | 201 | 508 | 804 | 1234 | 1383 | 1201 | 1035 | 690 | 381 | 105 | 7604 |
| Farmington | 39 | 91 | 300 | 623 | 942 | 1414 | 1606 | 1372 | 1175 | 756 | 412 | 136 | 8866 |
| Jackman | 77 | 129 | 351 | 685 | 1023 | 1525 | 1708 | 1484 | 1308 | 870 | 493 | 182 | 9835 |
| Lewiston | 5 | 22 | 155 | 471 | 798 | 1221 | 1389 | 1184 | 1004 | 639 | 303 | 53 | 7244 |
| Long Falls Dam | 79 | 130 | 345 | 673 | 999 | 1476 | 1652 | 1436 | 1277 | 861 | 496 | 187 | 9611 |
| Madison | 24 | 65 | 254 | 589 | 903 | 1376 | 1566 | 1347 | 1138 | 729 | 388 | 110 | 8489 |
| Middle Dam | 98 | 139 | 339 | 688 | 1011 | 1491 | 1674 | 1464 | 1287 | 876 | 505 | 200 | 9772 |
| Portland | 11 | 39 | 189 | 512 | 789 | 1194 | 1370 | 1168 | 992 | 651 | 363 | 100 | 7378 |
| Rumford 1 SSE | 27 | 62 | 231 | 555 | 882 | 1339 | 1504 | 1280 | 1091 | 696 | 352 | 90 | 8109 |
| Sanford 2 NNW | 7 | 30 | 158 | 471 | 786 | 1197 | 1349 | 1148 | 961 | 609 | 278 | 58 | 7052 |
| Waterville | 7 | 26 | 174 | 487 | 816 | 1259 | 1417 | 1196 | 1008 | 636 | 295 | 61 | 7382 |
| West Buxton 2 NNW | 21 | 62 | 241 | 574 | 867 | 1290 | 1463 | 1254 | 1060 | 693 | 369 | 107 | 8001 |
| Heating Degree Day Normals
(base 65 f ) based on observation period 1961-1990 |
Jul | Aug | Sep | Oct | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Annual |
| New Hampshire Locations: | |||||||||||||
| Benton 5 SW | 36 | 79 | 267 | 577 | 900 | 1333 | 1491 | 1282 | 1094 | 705 | 359 | 110 | 8233 |
| Berlin | 33 | 84 | 277 | 611 | 930 | 1392 | 1575 | 1352 | 1163 | 738 | 383 | 107 | 8645 |
| Bethlehem | 46 | 80 | 271 | 605 | 942 | 1380 | 1535 | 1308 | 1113 | 723 | 359 | 114 | 8476 |
| Blackwater Dam | 12 | 56 | 229 | 561 | 849 | 1280 | 1454 | 1243 | 1045 | 666 | 336 | 81 | 7812 |
| Colebrook | 77 | 123 | 326 | 657 | 975 | 1438 | 1634 | 1403 | 1212 | 798 | 446 | 168 | 9257 |
| Concord | 13 | 39 | 196 | 533 | 837 | 1262 | 1438 | 1210 | 1011 | 633 | 312 | 70 | 7554 |
| Deering | 8 | 35 | 182 | 496 | 804 | 1228 | 1361 | 1162 | 992 | 618 | 278 | 61 | 7225 |
| Durham | 8 | 34 | 162 | 474 | 774 | 1178 | 1327 | 1120 | 946 | 609 | 304 | 66 | 7002 |
| Epping | 8 | 33 | 174 | 490 | 780 | 1181 | 1327 | 1117 | 949 | 606 | 297 | 61 | 7023 |
| First Conn Lake | 106 | 164 | 381 | 719 | 1056 | 1544 | 1755 | 1537 | 1358 | 900 | 521 | 222 | 10263 |
| Franklin Falls Dam | 13 | 57 | 232 | 564 | 861 | 1308 | 1494 | 1266 | 1057 | 681 | 343 | 80 | 7956 |
| Grafton | 33 | 76 | 269 | 595 | 897 | 1333 | 1507 | 1280 | 1094 | 711 | 366 | 115 | 8276 |
| Greenland | 14 | 43 | 177 | 477 | 753 | 1147 | 1296 | 1100 | 939 | 624 | 325 | 78 | 6973 |
| Hanover | 10 | 24 | 176 | 530 | 849 | 1296 | 1463 | 1226 | 1023 | 633 | 289 | 54 | 7573 |
| Keene | 0 | 20 | 148 | 471 | 777 | 1200 | 1364 | 1145 | 952 | 576 | 251 | 44 | 6948 |
| Lancaster | 33 | 82 | 264 | 598 | 936 | 1404 | 1587 | 1350 | 1135 | 723 | 362 | 110 | 8584 |
| Lebanon | 16 | 47 | 206 | 543 | 855 | 1308 | 1491 | 1257 | 1048 | 660 | 321 | 73 | 7825 |
| Massabesic Lake | 6 | 29 | 160 | 481 | 768 | 1200 | 1376 | 1165 | 973 | 612 | 290 | 55 | 7115 |
| Monroe 5 NNE | 24 | 64 | 232 | 577 | 912 | 1395 | 1609 | 1380 | 1159 | 726 | 362 | 91 | 8531 |
| Mount Sunapee | 21 | 51 | 209 | 518 | 846 | 1259 | 1398 | 1201 | 1035 | 672 | 318 | 85 | 7613 |
| Nashua 2 NNW | 7 | 25 | 162 | 493 | 798 | 1190 | 1352 | 1162 | 967 | 609 | 283 | 62 | 7110 |
| North Conway | 22 | 69 | 239 | 580 | 885 | 1318 | 1488 | 1271 | 1073 | 693 | 338 | 82 | 8058 |
| North Stratford | 40 | 95 | 271 | 639 | 990 | 1438 | 1634 | 1445 | 1212 | 777 | 395 | 120 | 9056 |
| Peterboro 2 S | 25 | 49 | 216 | 524 | 822 | 1231 | 1367 | 1179 | 1008 | 648 | 329 | 93 | 7491 |
| Pinkham Notch | 85 | 148 | 363 | 685 | 993 | 1417 | 1575 | 1372 | 1225 | 837 | 474 | 197 | 9371 |
| Plymouth | 32 | 80 | 285 | 608 | 912 | 1352 | 1525 | 1308 | 1110 | 717 | 381 | 121 | 8431 |
| Surry Mountain Lake | 13 | 53 | 228 | 564 | 843 | 1293 | 1479 | 1263 | 1054 | 669 | 337 | 90 | 7886 |
| Tamworth 3 | 42 | 102 | 306 | 639 | 912 | 1361 | 1541 | 1310 | 1113 | 729 | 406 | 132 | 8593 |
updated 1/01
by ES