It appears to be your first time visiting GDDTracker
Please enter your zip code for a customized experience. Also, be sure and watch our video introduction video.
Daily GDD accumulation for various base temperature models in 2025 & 2026
| 2026 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
|---|---|---|---|---|---|---|---|
| 02-15 | 31° | 55° | 21 | 11 | 1 | 0 | 0 |
| 02-16 | 34° | 60° | 46 | 26 | 6 | 0 | 0 |
| 02-17 | 41° | 55° | 72 | 42 | 12 | 0 | 0 |
| 02-18 | 43° | 62° | 103 | 63 | 23 | 3 | 0 |
| 02-19 | 36° | 55° | 127 | 77 | 27 | 3 | 0 |
| 02-20 | 27° | 49° | 143 | 83 | 27 | 3 | 0 |
| 02-21 | 26° | 29° | 149 | 83 | 27 | 3 | 0 |
| 02-22 | 21° | 26° | 150 | 83 | 27 | 3 | 0 |
| 02-23 | 15° | 26° | 150 | 83 | 27 | 3 | 0 |
| 02-24 | 13° | 36° | 152 | 83 | 27 | 3 | 0 |
| 02-25 | 25° | 35° | 161 | 83 | 27 | 3 | 0 |
| 02-26 | 19° | 39° | 168 | 83 | 27 | 3 | 0 |
| 2026 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 02-27 | 29° | 58° | 189 | 95 | 28 | 3 | 0 |
| 02-28 | 28° | 48° | 205 | 101 | 28 | 3 | 0 |
| 03-01 | 24° | 33° | 211 | 101 | 28 | 3 | 0 |
| 03-02 | 21° | 43° | 221 | 101 | 28 | 3 | 0 |
| 03-03 | 31° | 40° | 235 | 104 | 28 | 3 | 0 |
| 03-04 | 35° | 45° | 253 | 112 | 28 | 3 | 0 |
| 03-05 | 43° | 50° | 277 | 127 | 33 | 3 | 0 |
| 03-06 | 47° | 75° | 316 | 156 | 52 | 14 | 6 |
| 03-07 | 40° | 63° | 346 | 176 | 62 | 16 | 6 |
| 03-08 | 34° | 61° | 372 | 191 | 68 | 16 | 6 |
| 03-09 | 46° | 72° | 409 | 218 | 85 | 25 | 10 |
| 03-10 | 49° | 66° | 445 | 244 | 100 | 33 | 13 |
| 2026 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 03-11 | 34° | 65° | 472 | 261 | 108 | 33 | 13 |
| 03-12 | 30° | 44° | 487 | 266 | 108 | 33 | 13 |
| 03-13 | 36° | 47° | 506 | 276 | 108 | 33 | 13 |
| 03-14 | 29° | 36° | 517 | 276 | 108 | 33 | 13 |
| 03-15 | 37° | 66° | 546 | 296 | 117 | 34 | 13 |
| 03-16 | 22° | 41° | 556 | 296 | 117 | 34 | 13 |
| 03-17 | 16° | 23° | 556 | 296 | 117 | 34 | 13 |
| 03-18 | 20° | 45° | 566 | 296 | 117 | 34 | 13 |
| 03-19 | 32° | 61° | 591 | 311 | 121 | 34 | 13 |
| 03-20 | 44° | 69° | 625 | 336 | 136 | 41 | 15 |
| 03-21 | 39° | 63° | 654 | 354 | 145 | 42 | 15 |
| 03-22 | 34° | 64° | 681 | 371 | 152 | 42 | 15 |
| 2026 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 03-23 | 27° | 36° | 691 | 371 | 152 | 42 | 15 |
| 03-24 | 25° | 50° | 706 | 377 | 152 | 42 | 15 |
| 03-25 | 40° | 68° | 738 | 399 | 164 | 46 | 15 |
| 03-26 | 37° | 74° | 772 | 423 | 178 | 51 | 16 |
| 03-27 | 31° | 36° | 784 | 425 | 178 | 51 | 16 |
| 03-28 | 28° | 46° | 799 | 429 | 178 | 51 | 16 |
| 03-29 | 37° | 62° | 827 | 447 | 186 | 51 | 16 |
| 03-30 | 53° | 78° | 870 | 481 | 209 | 67 | 26 |
| 03-31 | 40° | 71° | 904 | 505 | 223 | 73 | 27 |
| 04-01 | 40° | 44° | 924 | 514 | 223 | 73 | 27 |
| 04-02 | 38° | 72° | 957 | 538 | 236 | 78 | 27 |
| 04-03 | 47° | 66° | 992 | 562 | 251 | 85 | 29 |
| 2026 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 04-04 | 42° | 64° | 1023 | 583 | 262 | 88 | 29 |
| 04-05 | 38° | 50° | 1045 | 595 | 264 | 88 | 29 |
| 04-06 | 36° | 49° | 1065 | 606 | 264 | 88 | 29 |
| 04-07 | 28° | 41° | 1078 | 608 | 264 | 88 | 29 |
| 04-08 | 33° | 68° | 1106 | 627 | 273 | 88 | 29 |
| 04-09 | 56° | 65° | 1145 | 655 | 291 | 99 | 34 |
| 04-10 | 40° | 59° | 1172 | 673 | 299 | 99 | 34 |
| 04-11 | 32° | 57° | 1195 | 685 | 301 | 99 | 34 |
| 04-12 | 53° | 81° | 1240 | 720 | 326 | 116 | 47 |
| 04-13 | 62° | 79° | 1288 | 759 | 355 | 137 | 62 |
| 04-14 | 60° | 82° | 1337 | 798 | 384 | 157 | 78 |
| 04-15 | 65° | 74° | 1385 | 835 | 411 | 177 | 92 |
| 2026 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 04-16 | 56° | 70° | 1425 | 866 | 432 | 189 | 100 |
| 04-17 | 49° | 78° | 1467 | 898 | 454 | 203 | 109 |
| 04-18 | 43° | 71° | 1502 | 923 | 469 | 210 | 111 |
| 04-19 | 35° | 49° | 1522 | 933 | 469 | 210 | 111 |
| 04-20 | 30° | 53° | 1542 | 942 | 469 | 210 | 111 |
| 04-21 | 44° | 77° | 1580 | 971 | 487 | 221 | 117 |
| 04-22 | 53° | 70° | 1620 | 1000 | 507 | 233 | 124 |
| 04-23 | 52° | 80° | 1664 | 1034 | 531 | 249 | 134 |
| 04-24 | 59° | 72° | 1707 | 1068 | 555 | 264 | 145 |
| 04-25 | 43° | 59° | 1736 | 1087 | 563 | 265 | 145 |
| 04-26 | 41° | 62° | 1765 | 1106 | 573 | 266 | 145 |
| 04-27 | 51° | 66° | 1802 | 1132 | 589 | 274 | 148 |
| 2026 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 04-28 | 52° | 63° | 1837 | 1158 | 604 | 282 | 151 |
| 04-29 | 40° | 55° | 1863 | 1174 | 610 | 282 | 151 |
| 04-30 | 34° | 56° | 1886 | 1186 | 613 | 282 | 151 |
| 05-01 | 37° | 47° | 1906 | 1196 | 613 | 282 | 151 |
| 05-02 | 31° | 52° | 1925 | 1206 | 613 | 282 | 151 |
| 05-03 | 41° | 60° | 1954 | 1224 | 621 | 283 | 151 |
| 05-04 | 49° | 79° | 1995 | 1256 | 643 | 296 | 160 |
| 05-05 | 44° | 58° | 2024 | 1275 | 652 | 297 | 160 |
| 05-06 | 40° | 55° | 2050 | 1291 | 658 | 297 | 160 |
| 05-07 | 35° | 58° | 2075 | 1305 | 662 | 297 | 160 |
| 05-08 | 43° | 63° | 2106 | 1327 | 674 | 301 | 160 |
| 05-09 | 49° | 73° | 2145 | 1356 | 693 | 312 | 166 |
| 2026 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 05-10 | 42° | 61° | 2174 | 1375 | 702 | 313 | 166 |
| 05-11 | 41° | 60° | 2203 | 1394 | 711 | 314 | 166 |
| 05-12 | 36° | 74° | 2236 | 1416 | 724 | 319 | 166 |
| 05-13 | 43° | 61° | 2266 | 1437 | 734 | 321 | 166 |
| 05-14 | 38° | 62° | 2294 | 1455 | 742 | 321 | 166 |
| 05-15 | 44° | 72° | 2331 | 1481 | 758 | 329 | 169 |
| 05-16 | 62° | 84° | 2381 | 1522 | 789 | 352 | 187 |
| 05-17 | 66° | 86° | 2435 | 1566 | 823 | 378 | 207 |
| 05-18 | 67° | 83° | 2488 | 1609 | 856 | 403 | 227 |
| 05-19 | 66° | 81° | 2539 | 1650 | 887 | 426 | 246 |
| 05-20 | 49° | 63° | 2573 | 1674 | 901 | 432 | 247 |
| 05-21 | 47° | 67° | 2608 | 1699 | 916 | 439 | 249 |
| 2026 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 05-22 | 53° | 75° | 2650 | 1731 | 938 | 453 | 258 |
| 05-23 | 56° | 64° | 2688 | 1759 | 956 | 463 | 263 |
| 05-24 | 57° | 70° | 2730 | 1791 | 978 | 477 | 271 |
| 05-25 | 50° | 82° | 2774 | 1825 | 1002 | 493 | 283 |
| 05-26 | 57° | 83° | 2822 | 1863 | 1030 | 513 | 297 |
| 05-27 | 55° | 82° | 2869 | 1900 | 1057 | 532 | 311 |
| 05-28 | 57° | 74° | 2913 | 1933 | 1080 | 547 | 322 |
| 05-29 | 53° | 84° | 2959 | 1970 | 1107 | 566 | 335 |
| 05-30 | 56° | 79° | 3004 | 2005 | 1132 | 583 | 348 |
| 05-31 | 52° | 77° | 3047 | 2038 | 1155 | 598 | 357 |
| 06-01 | 57° | 74° | 3091 | 2071 | 1178 | 613 | 368 |
| 06-02 | 53° | 78° | 3134 | 2105 | 1202 | 629 | 378 |
| 2026 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 06-03 | 49° | 82° | 3178 | 2138 | 1226 | 645 | 389 |
| 06-04 | 57° | 86° | 3227 | 2178 | 1255 | 666 | 406 |
| 06-05 | 67° | 78° | 3277 | 2218 | 1285 | 688 | 423 |
| 06-06 | 70° | 85° | 3333 | 2263 | 1320 | 715 | 445 |
| 06-07 | 68° | 86° | 3388 | 2309 | 1356 | 743 | 467 |
| 06-08 | 69° | 84° | 3442 | 2353 | 1390 | 769 | 489 |
| 06-09 | 72° | 88° | 3500 | 2401 | 1428 | 799 | 513 |
| 06-10 | 71° | 89° | 3558 | 2449 | 1466 | 829 | 539 |
| 06-11 | 66° | 83° | 3611 | 2492 | 1499 | 854 | 558 |
| 06-12 | 62° | 79° | 3659 | 2530 | 1527 | 874 | 574 |
| 06-13 | 63° | 81° | 3709 | 2570 | 1557 | 896 | 591 |
| 06-14 | 58° | 74° | 3753 | 2604 | 1581 | 912 | 602 |
| 2026 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 06-15 | 50° | 73° | 3793 | 2633 | 1601 | 924 | 608 |
| 06-16 | 58° | 74° | 3837 | 2667 | 1624 | 939 | 619 |
| 06-17 | 55° | 67° | 3876 | 2696 | 1644 | 951 | 625 |
| 06-18 | 61° | 71° | 3920 | 2730 | 1668 | 967 | 636 |
| 06-19 | 56° | 73° | 3962 | 2763 | 1690 | 981 | 646 |
| 06-20 | 60° | 75° | 4008 | 2798 | 1716 | 999 | 658 |
| 06-21 | 57° | 71° | 4050 | 2831 | 1738 | 1013 | 667 |
| 06-22 | 55° | 70° | 4091 | 2861 | 1758 | 1025 | 675 |
| 06-23 | 53° | 72° | 4131 | 2892 | 1779 | 1038 | 682 |
| 06-24 | 52° | 76° | 4173 | 2924 | 1801 | 1052 | 691 |
| 06-25 | 60° | 75° | 4219 | 2959 | 1826 | 1069 | 704 |
| 06-26 | 58° | 75° | 4263 | 2994 | 1851 | 1086 | 715 |
| 2026 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 06-27 | 59° | 78° | 4309 | 3030 | 1877 | 1104 | 729 |
| 06-28 | 64° | 83° | 4361 | 3072 | 1909 | 1128 | 747 |
| 2025 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
|---|---|---|---|---|---|---|---|
| 02-15 | 25° | 34° | 8 | 0 | 0 | 0 | 0 |
| 02-16 | 17° | 30° | 9 | 0 | 0 | 0 | 0 |
| 02-17 | -0° | 16° | 9 | 0 | 0 | 0 | 0 |
| 02-18 | 2° | 14° | 9 | 0 | 0 | 0 | 0 |
| 02-19 | 7° | 17° | 9 | 0 | 0 | 0 | 0 |
| 02-20 | 2° | 22° | 9 | 0 | 0 | 0 | 0 |
| 02-21 | 8° | 28° | 9 | 0 | 0 | 0 | 0 |
| 02-22 | 10° | 32° | 9 | 0 | 0 | 0 | 0 |
| 02-23 | 21° | 39° | 17 | 0 | 0 | 0 | 0 |
| 02-24 | 34° | 52° | 38 | 11 | 1 | 0 | 0 |
| 02-25 | 33° | 52° | 58 | 21 | 1 | 0 | 0 |
| 02-26 | 31° | 46° | 75 | 28 | 1 | 0 | 0 |
| 2025 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 02-27 | 33° | 48° | 93 | 36 | 1 | 0 | 0 |
| 02-28 | 29° | 58° | 115 | 48 | 3 | 0 | 0 |
| 03-01 | 17° | 37° | 120 | 48 | 3 | 0 | 0 |
| 03-02 | 14° | 34° | 122 | 48 | 3 | 0 | 0 |
| 03-03 | 25° | 42° | 134 | 50 | 3 | 0 | 0 |
| 03-04 | 38° | 48° | 155 | 61 | 4 | 0 | 0 |
| 03-05 | 29° | 51° | 173 | 69 | 4 | 0 | 0 |
| 03-06 | 28° | 37° | 184 | 70 | 4 | 0 | 0 |
| 03-07 | 29° | 39° | 196 | 72 | 4 | 0 | 0 |
| 03-08 | 30° | 46° | 212 | 78 | 4 | 0 | 0 |
| 03-09 | 31° | 56° | 234 | 89 | 6 | 0 | 0 |
| 03-10 | 36° | 66° | 263 | 109 | 15 | 1 | 0 |
| 2025 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 03-11 | 37° | 54° | 286 | 122 | 18 | 1 | 0 |
| 03-12 | 34° | 57° | 310 | 135 | 22 | 1 | 0 |
| 03-13 | 30° | 67° | 336 | 152 | 28 | 1 | 0 |
| 03-14 | 45° | 78° | 376 | 181 | 48 | 12 | 6 |
| 03-15 | 53° | 69° | 415 | 210 | 67 | 24 | 12 |
| 03-16 | 30° | 48° | 432 | 217 | 67 | 24 | 12 |
| 03-17 | 24° | 51° | 447 | 223 | 67 | 24 | 12 |
| 03-18 | 43° | 74° | 484 | 250 | 83 | 32 | 16 |
| 03-19 | 37° | 68° | 514 | 270 | 94 | 35 | 16 |
| 03-20 | 30° | 38° | 526 | 272 | 94 | 35 | 16 |
| 03-21 | 28° | 56° | 547 | 282 | 94 | 35 | 16 |
| 03-22 | 31° | 48° | 564 | 290 | 94 | 35 | 16 |
| 2025 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 03-23 | 31° | 47° | 582 | 297 | 94 | 35 | 16 |
| 03-24 | 34° | 48° | 600 | 306 | 94 | 35 | 16 |
| 03-25 | 26° | 46° | 614 | 310 | 94 | 35 | 16 |
| 03-26 | 27° | 50° | 631 | 317 | 94 | 35 | 16 |
| 03-27 | 38° | 56° | 656 | 331 | 99 | 35 | 16 |
| 03-28 | 47° | 77° | 695 | 361 | 119 | 46 | 23 |
| 03-29 | 58° | 66° | 735 | 391 | 139 | 58 | 30 |
| 03-30 | 51° | 74° | 776 | 421 | 159 | 71 | 37 |
| 03-31 | 32° | 48° | 794 | 429 | 159 | 71 | 37 |
| 04-01 | 28° | 45° | 809 | 434 | 159 | 71 | 37 |
| 04-02 | 37° | 64° | 837 | 453 | 167 | 71 | 37 |
| 04-03 | 43° | 64° | 869 | 474 | 179 | 75 | 37 |
| 2025 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 04-04 | 37° | 52° | 891 | 487 | 181 | 75 | 37 |
| 04-05 | 41° | 46° | 913 | 498 | 183 | 75 | 37 |
| 04-06 | 34° | 46° | 931 | 506 | 183 | 75 | 37 |
| 04-07 | 31° | 43° | 945 | 511 | 183 | 75 | 37 |
| 04-08 | 27° | 39° | 956 | 512 | 183 | 75 | 37 |
| 04-09 | 30° | 41° | 969 | 515 | 183 | 75 | 37 |
| 04-10 | 36° | 45° | 988 | 523 | 183 | 75 | 37 |
| 04-11 | 32° | 48° | 1005 | 531 | 183 | 75 | 37 |
| 04-12 | 29° | 58° | 1027 | 542 | 184 | 75 | 37 |
| 04-13 | 48° | 62° | 1060 | 565 | 197 | 80 | 37 |
| 04-14 | 52° | 64° | 1096 | 592 | 213 | 88 | 40 |
| 04-15 | 39° | 53° | 1120 | 605 | 217 | 88 | 40 |
| 2025 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 04-16 | 32° | 45° | 1136 | 612 | 217 | 88 | 40 |
| 04-17 | 34° | 66° | 1164 | 630 | 225 | 88 | 40 |
| 04-18 | 58° | 80° | 1212 | 667 | 252 | 107 | 54 |
| 04-19 | 44° | 70° | 1247 | 692 | 268 | 114 | 57 |
| 04-20 | 45° | 64° | 1280 | 715 | 281 | 119 | 57 |
| 04-21 | 52° | 60° | 1314 | 740 | 295 | 125 | 58 |
| 04-22 | 39° | 72° | 1347 | 763 | 308 | 131 | 58 |
| 04-23 | 52° | 77° | 1390 | 795 | 331 | 145 | 68 |
| 04-24 | 51° | 80° | 1433 | 829 | 354 | 161 | 78 |
| 04-25 | 43° | 68° | 1467 | 852 | 368 | 166 | 79 |
| 04-26 | 39° | 49° | 1489 | 864 | 370 | 166 | 79 |
| 04-27 | 32° | 69° | 1517 | 883 | 378 | 166 | 79 |
| 2025 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 04-28 | 50° | 81° | 1561 | 916 | 402 | 182 | 89 |
| 04-29 | 51° | 79° | 1604 | 949 | 425 | 197 | 99 |
| 04-30 | 42° | 65° | 1635 | 971 | 436 | 200 | 99 |
| 05-01 | 52° | 71° | 1674 | 1000 | 455 | 212 | 106 |
| 05-02 | 46° | 60° | 1705 | 1021 | 466 | 215 | 106 |
| 05-03 | 43° | 58° | 1734 | 1039 | 475 | 215 | 106 |
| 05-04 | 44° | 50° | 1759 | 1054 | 480 | 215 | 106 |
| 05-05 | 48° | 62° | 1791 | 1077 | 492 | 220 | 106 |
| 05-06 | 45° | 73° | 1828 | 1104 | 509 | 229 | 110 |
| 05-07 | 48° | 75° | 1868 | 1134 | 529 | 240 | 116 |
| 05-08 | 45° | 63° | 1900 | 1156 | 541 | 244 | 116 |
| 05-09 | 36° | 60° | 1926 | 1171 | 547 | 244 | 116 |
| 2025 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 05-10 | 39° | 73° | 1960 | 1195 | 561 | 250 | 117 |
| 05-11 | 43° | 76° | 1997 | 1222 | 578 | 259 | 121 |
| 05-12 | 51° | 83° | 2041 | 1257 | 602 | 276 | 133 |
| 05-13 | 60° | 76° | 2088 | 1293 | 628 | 294 | 146 |
| 05-14 | 62° | 76° | 2135 | 1330 | 655 | 313 | 160 |
| 05-15 | 64° | 90° | 2190 | 1376 | 691 | 341 | 183 |
| 05-16 | 62° | 86° | 2242 | 1417 | 723 | 364 | 201 |
| 05-17 | 55° | 68° | 2281 | 1447 | 742 | 376 | 208 |
| 05-18 | 48° | 62° | 2314 | 1470 | 755 | 381 | 208 |
| 05-19 | 44° | 62° | 2345 | 1491 | 766 | 384 | 208 |
| 05-20 | 47° | 58° | 2376 | 1512 | 777 | 387 | 208 |
| 05-21 | 48° | 56° | 2406 | 1531 | 787 | 388 | 208 |
| 2025 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 05-22 | 44° | 53° | 2432 | 1548 | 793 | 388 | 208 |
| 05-23 | 37° | 57° | 2457 | 1563 | 798 | 388 | 208 |
| 05-24 | 39° | 65° | 2487 | 1583 | 808 | 390 | 208 |
| 05-25 | 52° | 65° | 2524 | 1609 | 825 | 399 | 212 |
| 05-26 | 43° | 70° | 2558 | 1634 | 839 | 405 | 213 |
| 05-27 | 54° | 71° | 2599 | 1664 | 860 | 418 | 221 |
| 05-28 | 53° | 63° | 2635 | 1690 | 876 | 426 | 224 |
| 05-29 | 51° | 68° | 2673 | 1718 | 894 | 436 | 229 |
| 05-30 | 51° | 73° | 2713 | 1748 | 914 | 448 | 236 |
| 05-31 | 45° | 61° | 2744 | 1770 | 925 | 451 | 236 |
| 06-01 | 40° | 64° | 2774 | 1790 | 935 | 453 | 236 |
| 06-02 | 40° | 82° | 2813 | 1819 | 954 | 465 | 242 |
| 2025 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 06-03 | 63° | 88° | 2867 | 1862 | 988 | 490 | 263 |
| 06-04 | 58° | 78° | 2913 | 1899 | 1014 | 508 | 276 |
| 06-05 | 57° | 66° | 2953 | 1928 | 1033 | 520 | 282 |
| 06-06 | 61° | 71° | 2997 | 1962 | 1058 | 536 | 294 |
| 06-07 | 55° | 78° | 3041 | 1997 | 1082 | 552 | 305 |
| 06-08 | 61° | 81° | 3090 | 2036 | 1111 | 573 | 321 |
| 06-09 | 54° | 76° | 3133 | 2069 | 1134 | 589 | 331 |
| 06-10 | 52° | 77° | 3176 | 2102 | 1157 | 603 | 341 |
| 06-11 | 60° | 88° | 3228 | 2144 | 1189 | 627 | 360 |
| 06-12 | 64° | 84° | 3280 | 2186 | 1221 | 652 | 379 |
| 06-13 | 66° | 74° | 3328 | 2224 | 1249 | 672 | 394 |
| 06-14 | 62° | 74° | 3375 | 2260 | 1276 | 690 | 408 |
| 2025 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 06-15 | 59° | 81° | 3423 | 2298 | 1304 | 710 | 422 |
| 06-16 | 61° | 85° | 3474 | 2339 | 1335 | 733 | 441 |
| 06-17 | 69° | 90° | 3531 | 2387 | 1372 | 762 | 465 |
| 06-18 | 68° | 85° | 3586 | 2431 | 1406 | 789 | 486 |
| 06-19 | 64° | 80° | 3636 | 2471 | 1436 | 811 | 503 |
| 06-20 | 65° | 85° | 3689 | 2514 | 1469 | 836 | 523 |
| 06-21 | 73° | 92° | 3749 | 2565 | 1510 | 869 | 551 |
| 06-22 | 78° | 93° | 3813 | 2618 | 1554 | 904 | 582 |
| 06-23 | 76° | 94° | 3876 | 2671 | 1597 | 939 | 612 |
| 06-24 | 76° | 94° | 3939 | 2725 | 1640 | 974 | 642 |
| 06-25 | 71° | 87° | 3996 | 2772 | 1677 | 1003 | 666 |
| 06-26 | 74° | 91° | 4057 | 2822 | 1718 | 1036 | 694 |
| 2025 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 06-27 | 74° | 88° | 4116 | 2871 | 1757 | 1067 | 719 |
| 06-28 | 68° | 82° | 4168 | 2914 | 1789 | 1092 | 739 |
| 06-29 | 68° | 90° | 4226 | 2961 | 1826 | 1121 | 763 |
| 06-30 | 73° | 86° | 4283 | 3009 | 1864 | 1150 | 788 |
| 07-01 | 69° | 81° | 4336 | 3052 | 1897 | 1175 | 808 |
| 07-02 | 64° | 87° | 4389 | 3095 | 1930 | 1200 | 828 |
| 07-03 | 66° | 89° | 4445 | 3140 | 1965 | 1228 | 850 |
| 07-04 | 69° | 86° | 4500 | 3186 | 2001 | 1256 | 873 |
| 07-05 | 72° | 91° | 4560 | 3235 | 2041 | 1287 | 900 |
| 07-06 | 70° | 89° | 4617 | 3283 | 2078 | 1317 | 924 |
| 07-07 | 66° | 77° | 4667 | 3323 | 2108 | 1338 | 941 |
| 07-08 | 60° | 88° | 4719 | 3364 | 2140 | 1362 | 960 |
| 2025 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 07-09 | 68° | 82° | 4772 | 3408 | 2173 | 1387 | 980 |
| 07-10 | 63° | 85° | 4824 | 3450 | 2205 | 1411 | 999 |
| 07-11 | 70° | 90° | 4882 | 3497 | 2243 | 1441 | 1024 |
| 07-12 | 74° | 86° | 4940 | 3545 | 2281 | 1471 | 1049 |
| 07-13 | 68° | 82° | 4993 | 3588 | 2314 | 1496 | 1069 |
| 07-14 | 59° | 85° | 5043 | 3628 | 2344 | 1518 | 1086 |
| 07-15 | 62° | 91° | 5097 | 3673 | 2378 | 1544 | 1107 |
| 07-16 | 71° | 91° | 5156 | 3722 | 2417 | 1575 | 1133 |
| 07-17 | 65° | 74° | 5203 | 3759 | 2444 | 1595 | 1147 |
| 07-18 | 60° | 79° | 5251 | 3797 | 2472 | 1614 | 1162 |
| 07-19 | 67° | 80° | 5303 | 3838 | 2503 | 1638 | 1180 |
| 07-20 | 68° | 76° | 5353 | 3878 | 2534 | 1660 | 1198 |
| 2025 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 07-21 | 62° | 82° | 5403 | 3919 | 2564 | 1682 | 1215 |
| 07-22 | 64° | 83° | 5454 | 3960 | 2595 | 1705 | 1233 |
| 07-23 | 66° | 90° | 5510 | 4006 | 2631 | 1733 | 1256 |
| 07-24 | 74° | 95° | 5572 | 4058 | 2673 | 1768 | 1285 |
| 07-25 | 72° | 82° | 5627 | 4103 | 2708 | 1794 | 1307 |
| 07-26 | 71° | 79° | 5680 | 4146 | 2741 | 1819 | 1327 |
| 07-27 | 72° | 87° | 5738 | 4194 | 2779 | 1849 | 1352 |
| 07-28 | 75° | 89° | 5798 | 4243 | 2819 | 1881 | 1379 |
| 07-29 | 70° | 91° | 5856 | 4292 | 2857 | 1911 | 1404 |
| 07-30 | 70° | 84° | 5911 | 4337 | 2892 | 1939 | 1426 |
| 07-31 | 61° | 76° | 5958 | 4373 | 2919 | 1957 | 1440 |
| 08-01 | 58° | 75° | 6002 | 4408 | 2943 | 1973 | 1451 |
| 2025 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 08-02 | 55° | 77° | 6046 | 4442 | 2967 | 1989 | 1462 |
| 08-03 | 55° | 78° | 6090 | 4476 | 2991 | 2006 | 1473 |
| 08-04 | 58° | 80° | 6137 | 4513 | 3018 | 2025 | 1487 |
| 08-05 | 58° | 82° | 6186 | 4551 | 3046 | 2045 | 1502 |
| 08-06 | 60° | 84° | 6236 | 4591 | 3077 | 2067 | 1519 |
| 08-07 | 66° | 87° | 6290 | 4636 | 3111 | 2094 | 1541 |
| 08-08 | 70° | 88° | 6348 | 4683 | 3149 | 2123 | 1566 |
| 08-09 | 69° | 90° | 6405 | 4731 | 3186 | 2152 | 1590 |
| 08-10 | 71° | 89° | 6463 | 4779 | 3224 | 2182 | 1615 |
| 08-11 | 72° | 85° | 6520 | 4826 | 3261 | 2211 | 1639 |
| 08-12 | 71° | 89° | 6578 | 4874 | 3299 | 2241 | 1664 |
| 08-13 | 68° | 82° | 6631 | 4917 | 3332 | 2266 | 1684 |
| 2025 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 08-14 | 59° | 82° | 6680 | 4955 | 3361 | 2287 | 1699 |
| 08-15 | 62° | 88° | 6733 | 4999 | 3394 | 2312 | 1720 |
| 08-16 | 74° | 92° | 6794 | 5050 | 3435 | 2346 | 1748 |
| 08-17 | 71° | 82° | 6849 | 5094 | 3469 | 2372 | 1769 |
| 08-18 | 68° | 84° | 6902 | 5138 | 3503 | 2398 | 1790 |
| 08-19 | 70° | 76° | 6954 | 5179 | 3535 | 2421 | 1808 |
| 08-20 | 65° | 72° | 7000 | 5216 | 3561 | 2439 | 1822 |
| 08-21 | 58° | 73° | 7044 | 5249 | 3584 | 2455 | 1832 |
| 08-22 | 56° | 78° | 7088 | 5284 | 3609 | 2472 | 1844 |
| 08-23 | 63° | 83° | 7139 | 5325 | 3640 | 2495 | 1862 |
| 08-24 | 58° | 72° | 7183 | 5358 | 3664 | 2510 | 1872 |
| 08-25 | 56° | 67° | 7222 | 5388 | 3683 | 2521 | 1879 |
| 2025 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 08-26 | 54° | 70° | 7262 | 5418 | 3703 | 2533 | 1886 |
| 08-27 | 48° | 74° | 7301 | 5447 | 3722 | 2544 | 1892 |
| 08-28 | 59° | 74° | 7346 | 5481 | 3747 | 2561 | 1904 |
| 08-29 | 48° | 68° | 7382 | 5507 | 3763 | 2569 | 1907 |
| 08-30 | 53° | 73° | 7423 | 5539 | 3784 | 2582 | 1915 |
| 08-31 | 49° | 74° | 7463 | 5568 | 3804 | 2594 | 1921 |
| 09-01 | 51° | 76° | 7504 | 5600 | 3825 | 2607 | 1930 |
| 09-02 | 53° | 78° | 7548 | 5633 | 3848 | 2623 | 1940 |
| 09-03 | 56° | 75° | 7591 | 5666 | 3872 | 2638 | 1951 |
| 09-04 | 54° | 65° | 7628 | 5693 | 3889 | 2647 | 1955 |
| 09-05 | 53° | 67° | 7666 | 5722 | 3907 | 2657 | 1960 |
| 09-06 | 46° | 64° | 7699 | 5745 | 3920 | 2662 | 1960 |
| 2025 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 09-07 | 46° | 64° | 7732 | 5768 | 3933 | 2667 | 1960 |
| 09-08 | 41° | 69° | 7765 | 5790 | 3946 | 2672 | 1960 |
| 09-09 | 44° | 75° | 7802 | 5818 | 3963 | 2681 | 1964 |
| 09-10 | 56° | 80° | 7848 | 5853 | 3988 | 2699 | 1977 |
| 09-11 | 54° | 80° | 7893 | 5888 | 4014 | 2716 | 1989 |
| 09-12 | 52° | 82° | 7938 | 5924 | 4039 | 2733 | 2001 |
| 09-13 | 60° | 72° | 7982 | 5958 | 4063 | 2749 | 2012 |
| 09-14 | 59° | 84° | 8032 | 5997 | 4093 | 2771 | 2029 |
| 09-15 | 59° | 83° | 8081 | 6036 | 4122 | 2792 | 2045 |
| 09-16 | 56° | 80° | 8127 | 6072 | 4148 | 2810 | 2058 |
| 09-17 | 56° | 82° | 8174 | 6109 | 4175 | 2829 | 2072 |
| 09-18 | 55° | 84° | 8221 | 6147 | 4202 | 2849 | 2086 |
| 2025 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 09-19 | 59° | 88° | 8273 | 6189 | 4234 | 2872 | 2105 |
| 09-20 | 62° | 80° | 8322 | 6228 | 4263 | 2893 | 2121 |
| 09-21 | 64° | 82° | 8373 | 6268 | 4294 | 2916 | 2139 |
| 09-22 | 65° | 78° | 8422 | 6308 | 4323 | 2937 | 2155 |
| 09-23 | 63° | 73° | 8468 | 6343 | 4349 | 2955 | 2168 |
| 09-24 | 63° | 70° | 8512 | 6378 | 4373 | 2971 | 2179 |
| 09-25 | 58° | 71° | 8554 | 6410 | 4395 | 2986 | 2188 |
| 09-26 | 53° | 79° | 8598 | 6444 | 4419 | 3002 | 2199 |
| 09-27 | 57° | 83° | 8647 | 6482 | 4448 | 3022 | 2215 |
| 09-28 | 57° | 80° | 8694 | 6519 | 4474 | 3041 | 2229 |
| 09-29 | 56° | 85° | 8742 | 6558 | 4503 | 3061 | 2244 |
| 09-30 | 57° | 81° | 8789 | 6595 | 4530 | 3080 | 2258 |
| 2025 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
Although Punxsutawney Phil saw his shadow predicting six more weeks of winter, GDDTracker will start counting on February 15. Spring is when GDDTracker receives the most attention for alerting turfgrass managers of optimal application timing windows for suppressing annual bluegrass seedheads and crabgrass preemergence applications. As spring turns to summer, there are several models that may be helpful throughout the season including the early season dollar spot DMI timer and the Smith-Kerns dollar spot prediction model. To learn about all the available models, click on the "About" tab at the top of the screen. Thanks for your continued support and use of GDDTracker and best wishes for a successful 2026!
Don't miss this update from from Kevin Frank regarding timing of crabgrass preemergence herbicides.