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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° | 60° | 24 | 14 | 4 | 0 | 0 |
| 02-16 | 34° | 65° | 51 | 31 | 11 | 0 | 0 |
| 02-17 | 40° | 58° | 78 | 48 | 18 | 0 | 0 |
| 02-18 | 45° | 65° | 111 | 71 | 31 | 5 | 0 |
| 02-19 | 39° | 57° | 137 | 87 | 37 | 5 | 0 |
| 02-20 | 26° | 48° | 152 | 92 | 37 | 5 | 0 |
| 02-21 | 24° | 30° | 157 | 92 | 37 | 5 | 0 |
| 02-22 | 20° | 26° | 159 | 92 | 37 | 5 | 0 |
| 02-23 | 19° | 28° | 160 | 92 | 37 | 5 | 0 |
| 02-24 | 18° | 39° | 167 | 92 | 37 | 5 | 0 |
| 02-25 | 26° | 39° | 177 | 92 | 37 | 5 | 0 |
| 02-26 | 24° | 44° | 189 | 94 | 37 | 5 | 0 |
| 2026 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 02-27 | 27° | 64° | 212 | 108 | 41 | 5 | 0 |
| 02-28 | 28° | 49° | 229 | 114 | 41 | 5 | 0 |
| 03-01 | 25° | 35° | 237 | 114 | 41 | 5 | 0 |
| 03-02 | 24° | 47° | 250 | 118 | 41 | 5 | 0 |
| 03-03 | 34° | 43° | 267 | 124 | 41 | 5 | 0 |
| 03-04 | 35° | 43° | 284 | 131 | 41 | 5 | 0 |
| 03-05 | 41° | 51° | 308 | 145 | 45 | 5 | 0 |
| 03-06 | 47° | 79° | 349 | 176 | 65 | 18 | 8 |
| 03-07 | 39° | 63° | 378 | 196 | 75 | 19 | 8 |
| 03-08 | 34° | 62° | 404 | 212 | 81 | 19 | 8 |
| 03-09 | 48° | 73° | 443 | 240 | 100 | 30 | 13 |
| 03-10 | 46° | 65° | 476 | 264 | 113 | 35 | 13 |
| 2026 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 03-11 | 35° | 60° | 501 | 279 | 118 | 35 | 13 |
| 03-12 | 29° | 45° | 517 | 284 | 118 | 35 | 13 |
| 03-13 | 38° | 48° | 537 | 295 | 119 | 35 | 13 |
| 03-14 | 30° | 37° | 549 | 297 | 119 | 35 | 13 |
| 03-15 | 33° | 65° | 576 | 314 | 126 | 35 | 13 |
| 03-16 | 19° | 33° | 580 | 314 | 126 | 35 | 13 |
| 03-17 | 13° | 24° | 580 | 314 | 126 | 35 | 13 |
| 03-18 | 22° | 48° | 593 | 317 | 126 | 35 | 13 |
| 03-19 | 33° | 64° | 620 | 333 | 132 | 35 | 13 |
| 03-20 | 46° | 75° | 658 | 362 | 151 | 45 | 19 |
| 03-21 | 42° | 69° | 691 | 384 | 163 | 50 | 19 |
| 03-22 | 33° | 68° | 719 | 403 | 172 | 50 | 19 |
| 2026 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 03-23 | 29° | 40° | 732 | 405 | 172 | 50 | 19 |
| 03-24 | 24° | 53° | 749 | 412 | 172 | 50 | 19 |
| 03-25 | 40° | 71° | 782 | 436 | 186 | 56 | 20 |
| 03-26 | 36° | 78° | 818 | 461 | 201 | 63 | 22 |
| 03-27 | 33° | 41° | 832 | 466 | 201 | 63 | 22 |
| 03-28 | 28° | 47° | 848 | 471 | 201 | 63 | 22 |
| 03-29 | 39° | 63° | 877 | 490 | 210 | 65 | 22 |
| 03-30 | 52° | 80° | 921 | 525 | 235 | 81 | 33 |
| 03-31 | 40° | 71° | 955 | 548 | 248 | 86 | 33 |
| 04-01 | 38° | 43° | 973 | 556 | 248 | 86 | 33 |
| 04-02 | 39° | 72° | 1006 | 580 | 261 | 92 | 34 |
| 04-03 | 42° | 67° | 1039 | 602 | 274 | 96 | 34 |
| 2026 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 04-04 | 42° | 62° | 1069 | 622 | 284 | 98 | 34 |
| 04-05 | 37° | 51° | 1091 | 634 | 286 | 98 | 34 |
| 04-06 | 38° | 50° | 1113 | 646 | 288 | 98 | 34 |
| 04-07 | 30° | 42° | 1127 | 650 | 288 | 98 | 34 |
| 04-08 | 34° | 70° | 1157 | 670 | 298 | 100 | 34 |
| 04-09 | 59° | 67° | 1198 | 701 | 319 | 113 | 41 |
| 04-10 | 43° | 60° | 1227 | 721 | 329 | 115 | 41 |
| 04-11 | 35° | 59° | 1253 | 736 | 334 | 115 | 41 |
| 04-12 | 56° | 80° | 1299 | 772 | 360 | 133 | 55 |
| 04-13 | 64° | 80° | 1349 | 812 | 390 | 155 | 71 |
| 04-14 | 59° | 83° | 1398 | 851 | 419 | 175 | 87 |
| 04-15 | 66° | 73° | 1445 | 888 | 446 | 195 | 102 |
| 2026 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 04-16 | 58° | 71° | 1487 | 921 | 468 | 209 | 111 |
| 04-17 | 50° | 82° | 1531 | 955 | 492 | 225 | 122 |
| 04-18 | 43° | 65° | 1563 | 977 | 504 | 229 | 122 |
| 04-19 | 35° | 50° | 1584 | 987 | 505 | 229 | 122 |
| 04-20 | 31° | 56° | 1605 | 999 | 506 | 229 | 122 |
| 04-21 | 48° | 78° | 1646 | 1030 | 527 | 242 | 130 |
| 04-22 | 53° | 73° | 1688 | 1061 | 549 | 255 | 138 |
| 04-23 | 50° | 81° | 1731 | 1095 | 572 | 271 | 149 |
| 04-24 | 61° | 70° | 1775 | 1128 | 596 | 287 | 160 |
| 04-25 | 42° | 61° | 1805 | 1148 | 606 | 289 | 160 |
| 04-26 | 40° | 66° | 1836 | 1169 | 617 | 292 | 160 |
| 04-27 | 53° | 66° | 1874 | 1197 | 635 | 301 | 164 |
| 2026 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 04-28 | 52° | 62° | 1908 | 1222 | 649 | 308 | 166 |
| 04-29 | 41° | 57° | 1935 | 1239 | 656 | 308 | 166 |
| 04-30 | 36° | 55° | 1959 | 1252 | 660 | 308 | 166 |
| 05-01 | 38° | 48° | 1980 | 1263 | 661 | 308 | 166 |
| 05-02 | 31° | 54° | 2001 | 1274 | 662 | 308 | 166 |
| 05-03 | 42° | 64° | 2032 | 1295 | 673 | 311 | 166 |
| 05-04 | 48° | 79° | 2073 | 1327 | 694 | 325 | 174 |
| 05-05 | 45° | 59° | 2103 | 1346 | 704 | 326 | 174 |
| 05-06 | 42° | 56° | 2130 | 1364 | 711 | 326 | 174 |
| 05-07 | 35° | 59° | 2155 | 1378 | 716 | 326 | 174 |
| 05-08 | 46° | 65° | 2188 | 1402 | 729 | 332 | 175 |
| 05-09 | 50° | 74° | 2228 | 1431 | 749 | 343 | 181 |
| 2026 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 05-10 | 43° | 64° | 2259 | 1453 | 761 | 347 | 181 |
| 05-11 | 43° | 58° | 2288 | 1471 | 769 | 347 | 181 |
| 05-12 | 38° | 78° | 2324 | 1497 | 785 | 355 | 184 |
| 05-13 | 45° | 63° | 2356 | 1519 | 797 | 359 | 184 |
| 05-14 | 38° | 66° | 2386 | 1539 | 807 | 361 | 184 |
| 05-15 | 50° | 73° | 2426 | 1569 | 827 | 373 | 191 |
| 05-16 | 63° | 83° | 2476 | 1610 | 857 | 396 | 209 |
| 05-17 | 65° | 86° | 2530 | 1653 | 891 | 421 | 229 |
| 05-18 | 67° | 82° | 2582 | 1696 | 924 | 446 | 249 |
| 05-19 | 65° | 79° | 2632 | 1736 | 953 | 467 | 266 |
| 05-20 | 50° | 65° | 2668 | 1761 | 969 | 475 | 268 |
| 05-21 | 47° | 65° | 2702 | 1785 | 983 | 481 | 269 |
| 2026 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 05-22 | 54° | 72° | 2743 | 1816 | 1004 | 494 | 277 |
| 05-23 | 57° | 74° | 2786 | 1850 | 1027 | 510 | 288 |
| 05-24 | 60° | 74° | 2831 | 1884 | 1052 | 526 | 299 |
| 05-25 | 54° | 83° | 2877 | 1921 | 1079 | 545 | 313 |
| 05-26 | 59° | 83° | 2926 | 1960 | 1107 | 565 | 329 |
| 05-27 | 57° | 86° | 2976 | 1999 | 1137 | 587 | 345 |
| 05-28 | 58° | 76° | 3020 | 2034 | 1162 | 604 | 357 |
| 05-29 | 51° | 85° | 3066 | 2070 | 1188 | 622 | 370 |
| 05-30 | 57° | 80° | 3113 | 2106 | 1214 | 640 | 383 |
| 05-31 | 55° | 78° | 3157 | 2141 | 1239 | 657 | 395 |
| 06-01 | 59° | 69° | 3199 | 2173 | 1261 | 671 | 404 |
| 06-02 | 51° | 77° | 3242 | 2205 | 1283 | 685 | 413 |
| 2026 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 06-03 | 49° | 83° | 3286 | 2239 | 1307 | 701 | 424 |
| 06-04 | 58° | 86° | 3336 | 2280 | 1337 | 723 | 442 |
| 06-05 | 69° | 81° | 3389 | 2323 | 1370 | 748 | 462 |
| 06-06 | 71° | 86° | 3446 | 2369 | 1407 | 777 | 485 |
| 06-07 | 70° | 86° | 3502 | 2415 | 1443 | 805 | 508 |
| 06-08 | 70° | 80° | 3555 | 2458 | 1476 | 830 | 528 |
| 06-09 | 71° | 88° | 3612 | 2506 | 1513 | 859 | 553 |
| 06-10 | 71° | 90° | 3670 | 2554 | 1552 | 890 | 578 |
| 06-11 | 66° | 80° | 3721 | 2595 | 1582 | 913 | 596 |
| 06-12 | 61° | 79° | 3770 | 2633 | 1611 | 933 | 611 |
| 06-13 | 63° | 81° | 3820 | 2673 | 1641 | 955 | 628 |
| 06-14 | 60° | 73° | 3864 | 2708 | 1666 | 972 | 640 |
| 2026 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 06-15 | 52° | 74° | 3906 | 2739 | 1687 | 985 | 648 |
| 06-16 | 59° | 76° | 3951 | 2774 | 1712 | 1002 | 660 |
| 06-17 | 55° | 68° | 3991 | 2804 | 1732 | 1014 | 667 |
| 06-18 | 63° | 71° | 4036 | 2839 | 1757 | 1031 | 679 |
| 06-19 | 57° | 75° | 4080 | 2873 | 1781 | 1047 | 690 |
| 06-20 | 59° | 77° | 4125 | 2909 | 1807 | 1065 | 703 |
| 06-21 | 58° | 72° | 4168 | 2942 | 1830 | 1080 | 713 |
| 06-22 | 58° | 68° | 4209 | 2973 | 1851 | 1093 | 721 |
| 06-23 | 53° | 72° | 4250 | 3003 | 1871 | 1105 | 728 |
| 06-24 | 55° | 75° | 4293 | 3036 | 1894 | 1120 | 738 |
| 06-25 | 56° | 73° | 4335 | 3069 | 1916 | 1134 | 748 |
| 06-26 | 56° | 75° | 4379 | 3102 | 1940 | 1150 | 758 |
| 2026 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 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 | 14° | 30° | 8 | 0 | 0 | 0 | 0 |
| 02-17 | 3° | 12° | 8 | 0 | 0 | 0 | 0 |
| 02-18 | -6° | 14° | 8 | 0 | 0 | 0 | 0 |
| 02-19 | 5° | 20° | 8 | 0 | 0 | 0 | 0 |
| 02-20 | 1° | 23° | 8 | 0 | 0 | 0 | 0 |
| 02-21 | 8° | 31° | 8 | 0 | 0 | 0 | 0 |
| 02-22 | 12° | 36° | 10 | 0 | 0 | 0 | 0 |
| 02-23 | 21° | 48° | 22 | 3 | 0 | 0 | 0 |
| 02-24 | 37° | 55° | 46 | 17 | 4 | 0 | 0 |
| 02-25 | 35° | 56° | 70 | 30 | 7 | 0 | 0 |
| 02-26 | 32° | 51° | 89 | 39 | 7 | 0 | 0 |
| 2025 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 02-27 | 34° | 51° | 109 | 50 | 7 | 0 | 0 |
| 02-28 | 30° | 59° | 132 | 62 | 10 | 0 | 0 |
| 03-01 | 20° | 39° | 139 | 62 | 10 | 0 | 0 |
| 03-02 | 15° | 37° | 143 | 62 | 10 | 0 | 0 |
| 03-03 | 27° | 44° | 157 | 66 | 10 | 0 | 0 |
| 03-04 | 41° | 47° | 179 | 77 | 12 | 0 | 0 |
| 03-05 | 29° | 51° | 197 | 86 | 12 | 0 | 0 |
| 03-06 | 26° | 39° | 208 | 86 | 12 | 0 | 0 |
| 03-07 | 31° | 37° | 219 | 88 | 12 | 0 | 0 |
| 03-08 | 30° | 48° | 237 | 95 | 12 | 0 | 0 |
| 03-09 | 31° | 57° | 259 | 107 | 14 | 0 | 0 |
| 03-10 | 37° | 67° | 288 | 127 | 23 | 2 | 0 |
| 2025 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 03-11 | 35° | 55° | 312 | 141 | 27 | 2 | 0 |
| 03-12 | 33° | 57° | 335 | 154 | 30 | 2 | 0 |
| 03-13 | 30° | 67° | 361 | 170 | 36 | 2 | 0 |
| 03-14 | 46° | 78° | 401 | 200 | 56 | 14 | 7 |
| 03-15 | 47° | 69° | 437 | 226 | 72 | 21 | 10 |
| 03-16 | 29° | 44° | 452 | 230 | 72 | 21 | 10 |
| 03-17 | 24° | 52° | 467 | 236 | 72 | 21 | 10 |
| 03-18 | 45° | 73° | 504 | 263 | 89 | 30 | 13 |
| 03-19 | 37° | 66° | 534 | 282 | 98 | 32 | 13 |
| 03-20 | 31° | 42° | 548 | 287 | 98 | 32 | 13 |
| 03-21 | 30° | 58° | 569 | 298 | 100 | 32 | 13 |
| 03-22 | 34° | 50° | 590 | 308 | 100 | 32 | 13 |
| 2025 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 03-23 | 32° | 46° | 607 | 316 | 100 | 32 | 13 |
| 03-24 | 34° | 49° | 626 | 325 | 100 | 32 | 13 |
| 03-25 | 28° | 50° | 643 | 332 | 100 | 32 | 13 |
| 03-26 | 29° | 51° | 662 | 341 | 100 | 32 | 13 |
| 03-27 | 40° | 53° | 686 | 355 | 105 | 32 | 13 |
| 03-28 | 48° | 80° | 728 | 387 | 127 | 45 | 22 |
| 03-29 | 57° | 67° | 768 | 417 | 147 | 58 | 29 |
| 03-30 | 48° | 78° | 809 | 448 | 168 | 70 | 37 |
| 03-31 | 34° | 46° | 827 | 456 | 168 | 70 | 37 |
| 04-01 | 30° | 48° | 844 | 463 | 168 | 70 | 37 |
| 04-02 | 40° | 66° | 875 | 484 | 179 | 74 | 37 |
| 04-03 | 44° | 64° | 907 | 506 | 190 | 77 | 37 |
| 2025 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 04-04 | 39° | 51° | 930 | 519 | 194 | 77 | 37 |
| 04-05 | 41° | 50° | 954 | 532 | 197 | 77 | 37 |
| 04-06 | 36° | 47° | 973 | 542 | 197 | 77 | 37 |
| 04-07 | 31° | 43° | 988 | 547 | 197 | 77 | 37 |
| 04-08 | 25° | 42° | 999 | 548 | 197 | 77 | 37 |
| 04-09 | 31° | 43° | 1015 | 553 | 197 | 77 | 37 |
| 04-10 | 38° | 47° | 1035 | 564 | 197 | 77 | 37 |
| 04-11 | 35° | 50° | 1055 | 574 | 198 | 77 | 37 |
| 04-12 | 29° | 61° | 1078 | 587 | 201 | 77 | 37 |
| 04-13 | 51° | 63° | 1113 | 612 | 216 | 84 | 39 |
| 04-14 | 53° | 63° | 1149 | 638 | 231 | 92 | 42 |
| 04-15 | 40° | 55° | 1175 | 653 | 237 | 92 | 42 |
| 2025 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 04-16 | 32° | 53° | 1195 | 664 | 238 | 92 | 42 |
| 04-17 | 37° | 64° | 1224 | 683 | 246 | 93 | 42 |
| 04-18 | 57° | 79° | 1270 | 719 | 272 | 111 | 55 |
| 04-19 | 43° | 69° | 1304 | 743 | 286 | 117 | 56 |
| 04-20 | 48° | 66° | 1339 | 768 | 301 | 124 | 58 |
| 04-21 | 49° | 61° | 1372 | 791 | 315 | 129 | 58 |
| 04-22 | 40° | 73° | 1407 | 816 | 329 | 136 | 60 |
| 04-23 | 52° | 76° | 1449 | 848 | 351 | 150 | 69 |
| 04-24 | 51° | 79° | 1492 | 881 | 374 | 165 | 79 |
| 04-25 | 45° | 65° | 1525 | 904 | 387 | 170 | 79 |
| 04-26 | 41° | 52° | 1550 | 919 | 392 | 170 | 79 |
| 04-27 | 33° | 69° | 1579 | 938 | 401 | 171 | 79 |
| 2025 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 04-28 | 52° | 83° | 1624 | 973 | 427 | 189 | 91 |
| 04-29 | 53° | 76° | 1667 | 1006 | 450 | 203 | 101 |
| 04-30 | 45° | 65° | 1700 | 1029 | 462 | 208 | 101 |
| 05-01 | 53° | 69° | 1739 | 1058 | 482 | 219 | 107 |
| 05-02 | 46° | 60° | 1770 | 1079 | 493 | 223 | 107 |
| 05-03 | 44° | 53° | 1797 | 1096 | 499 | 223 | 107 |
| 05-04 | 44° | 50° | 1822 | 1111 | 504 | 223 | 107 |
| 05-05 | 47° | 62° | 1854 | 1133 | 517 | 227 | 107 |
| 05-06 | 45° | 75° | 1892 | 1161 | 535 | 237 | 112 |
| 05-07 | 47° | 76° | 1932 | 1191 | 554 | 249 | 119 |
| 05-08 | 45° | 61° | 1963 | 1212 | 565 | 252 | 119 |
| 05-09 | 37° | 64° | 1991 | 1230 | 574 | 252 | 119 |
| 2025 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 05-10 | 41° | 75° | 2027 | 1256 | 590 | 260 | 122 |
| 05-11 | 42° | 76° | 2064 | 1283 | 606 | 269 | 126 |
| 05-12 | 50° | 80° | 2107 | 1316 | 630 | 284 | 136 |
| 05-13 | 61° | 78° | 2154 | 1353 | 657 | 303 | 150 |
| 05-14 | 58° | 80° | 2201 | 1390 | 684 | 322 | 164 |
| 05-15 | 64° | 93° | 2258 | 1437 | 720 | 351 | 187 |
| 05-16 | 61° | 87° | 2310 | 1479 | 752 | 375 | 207 |
| 05-17 | 55° | 71° | 2351 | 1509 | 773 | 387 | 214 |
| 05-18 | 49° | 64° | 2385 | 1534 | 788 | 394 | 216 |
| 05-19 | 46° | 57° | 2415 | 1554 | 797 | 396 | 216 |
| 05-20 | 49° | 59° | 2447 | 1576 | 809 | 400 | 216 |
| 05-21 | 50° | 55° | 2477 | 1596 | 820 | 402 | 216 |
| 2025 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 05-22 | 47° | 56° | 2507 | 1616 | 829 | 404 | 216 |
| 05-23 | 40° | 63° | 2536 | 1635 | 839 | 405 | 216 |
| 05-24 | 41° | 67° | 2569 | 1658 | 851 | 410 | 216 |
| 05-25 | 52° | 65° | 2605 | 1684 | 867 | 418 | 219 |
| 05-26 | 44° | 70° | 2639 | 1708 | 882 | 424 | 221 |
| 05-27 | 54° | 70° | 2679 | 1738 | 902 | 436 | 228 |
| 05-28 | 54° | 61° | 2715 | 1764 | 917 | 444 | 230 |
| 05-29 | 50° | 69° | 2752 | 1791 | 935 | 453 | 235 |
| 05-30 | 52° | 74° | 2794 | 1822 | 956 | 466 | 243 |
| 05-31 | 49° | 64° | 2828 | 1847 | 971 | 473 | 244 |
| 06-01 | 40° | 69° | 2861 | 1869 | 983 | 477 | 244 |
| 06-02 | 44° | 84° | 2903 | 1902 | 1005 | 492 | 254 |
| 2025 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 06-03 | 65° | 89° | 2958 | 1947 | 1040 | 519 | 276 |
| 06-04 | 57° | 79° | 3004 | 1983 | 1066 | 537 | 289 |
| 06-05 | 57° | 67° | 3043 | 2012 | 1086 | 548 | 295 |
| 06-06 | 60° | 77° | 3090 | 2049 | 1113 | 567 | 309 |
| 06-07 | 58° | 79° | 3136 | 2085 | 1139 | 585 | 322 |
| 06-08 | 61° | 82° | 3185 | 2124 | 1168 | 606 | 338 |
| 06-09 | 54° | 76° | 3228 | 2157 | 1191 | 621 | 348 |
| 06-10 | 53° | 78° | 3272 | 2191 | 1215 | 637 | 359 |
| 06-11 | 61° | 90° | 3326 | 2235 | 1248 | 663 | 380 |
| 06-12 | 64° | 85° | 3378 | 2277 | 1281 | 687 | 399 |
| 06-13 | 64° | 74° | 3426 | 2315 | 1308 | 707 | 414 |
| 06-14 | 64° | 77° | 3474 | 2353 | 1337 | 727 | 429 |
| 2025 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 06-15 | 60° | 83° | 3524 | 2393 | 1366 | 749 | 446 |
| 06-16 | 63° | 86° | 3576 | 2435 | 1399 | 773 | 465 |
| 06-17 | 70° | 91° | 3634 | 2483 | 1437 | 803 | 490 |
| 06-18 | 68° | 84° | 3688 | 2527 | 1471 | 829 | 511 |
| 06-19 | 65° | 81° | 3740 | 2569 | 1502 | 853 | 530 |
| 06-20 | 66° | 83° | 3792 | 2611 | 1535 | 877 | 549 |
| 06-21 | 74° | 93° | 3854 | 2663 | 1577 | 911 | 578 |
| 06-22 | 78° | 93° | 3918 | 2716 | 1620 | 946 | 608 |
| 06-23 | 77° | 93° | 3981 | 2769 | 1663 | 981 | 638 |
| 06-24 | 76° | 94° | 4044 | 2823 | 1706 | 1017 | 669 |
| 06-25 | 71° | 90° | 4102 | 2871 | 1745 | 1047 | 694 |
| 06-26 | 74° | 96° | 4165 | 2924 | 1788 | 1082 | 724 |
| 2025 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 06-27 | 75° | 90° | 4226 | 2975 | 1828 | 1115 | 752 |
| 06-28 | 67° | 88° | 4281 | 3020 | 1864 | 1142 | 774 |
| 06-29 | 72° | 91° | 4341 | 3070 | 1904 | 1174 | 801 |
| 06-30 | 73° | 89° | 4401 | 3120 | 1943 | 1206 | 828 |
| 07-01 | 70° | 86° | 4457 | 3166 | 1979 | 1234 | 851 |
| 07-02 | 66° | 89° | 4512 | 3211 | 2014 | 1261 | 873 |
| 07-03 | 68° | 91° | 4569 | 3258 | 2052 | 1290 | 897 |
| 07-04 | 71° | 91° | 4629 | 3308 | 2091 | 1322 | 924 |
| 07-05 | 72° | 92° | 4689 | 3358 | 2131 | 1354 | 951 |
| 07-06 | 70° | 87° | 4745 | 3404 | 2168 | 1382 | 974 |
| 07-07 | 66° | 82° | 4797 | 3446 | 2200 | 1406 | 993 |
| 07-08 | 64° | 87° | 4851 | 3490 | 2233 | 1432 | 1014 |
| 2025 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 07-09 | 68° | 81° | 4904 | 3532 | 2266 | 1456 | 1033 |
| 07-10 | 65° | 88° | 4958 | 3577 | 2300 | 1483 | 1055 |
| 07-11 | 71° | 90° | 5016 | 3625 | 2339 | 1513 | 1080 |
| 07-12 | 71° | 83° | 5071 | 3670 | 2374 | 1540 | 1102 |
| 07-13 | 67° | 82° | 5124 | 3713 | 2406 | 1565 | 1122 |
| 07-14 | 60° | 86° | 5175 | 3754 | 2438 | 1588 | 1140 |
| 07-15 | 66° | 91° | 5232 | 3801 | 2474 | 1617 | 1164 |
| 07-16 | 72° | 91° | 5292 | 3851 | 2514 | 1649 | 1191 |
| 07-17 | 65° | 75° | 5340 | 3889 | 2542 | 1669 | 1206 |
| 07-18 | 59° | 83° | 5389 | 3928 | 2571 | 1690 | 1222 |
| 07-19 | 69° | 82° | 5443 | 3971 | 2605 | 1715 | 1242 |
| 07-20 | 69° | 76° | 5493 | 4012 | 2635 | 1738 | 1260 |
| 2025 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 07-21 | 65° | 83° | 5545 | 4054 | 2667 | 1762 | 1279 |
| 07-22 | 65° | 85° | 5598 | 4097 | 2700 | 1787 | 1299 |
| 07-23 | 67° | 91° | 5655 | 4144 | 2737 | 1816 | 1323 |
| 07-24 | 74° | 96° | 5718 | 4196 | 2780 | 1850 | 1352 |
| 07-25 | 72° | 82° | 5773 | 4242 | 2815 | 1878 | 1375 |
| 07-26 | 71° | 80° | 5827 | 4285 | 2849 | 1903 | 1395 |
| 07-27 | 73° | 87° | 5885 | 4334 | 2887 | 1934 | 1421 |
| 07-28 | 76° | 90° | 5946 | 4384 | 2928 | 1966 | 1448 |
| 07-29 | 69° | 92° | 6004 | 4433 | 2966 | 1997 | 1474 |
| 07-30 | 71° | 84° | 6059 | 4478 | 3002 | 2024 | 1496 |
| 07-31 | 64° | 75° | 6107 | 4516 | 3029 | 2044 | 1511 |
| 08-01 | 59° | 76° | 6152 | 4551 | 3055 | 2061 | 1523 |
| 2025 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 08-02 | 56° | 78° | 6197 | 4586 | 3080 | 2078 | 1535 |
| 08-03 | 56° | 79° | 6243 | 4622 | 3105 | 2096 | 1548 |
| 08-04 | 60° | 82° | 6292 | 4661 | 3134 | 2117 | 1564 |
| 08-05 | 60° | 83° | 6342 | 4701 | 3164 | 2139 | 1581 |
| 08-06 | 62° | 86° | 6394 | 4743 | 3197 | 2163 | 1600 |
| 08-07 | 70° | 89° | 6452 | 4791 | 3234 | 2193 | 1625 |
| 08-08 | 72° | 90° | 6511 | 4840 | 3273 | 2224 | 1651 |
| 08-09 | 71° | 91° | 6570 | 4889 | 3312 | 2255 | 1677 |
| 08-10 | 74° | 91° | 6630 | 4939 | 3352 | 2287 | 1704 |
| 08-11 | 73° | 87° | 6688 | 4987 | 3390 | 2317 | 1729 |
| 08-12 | 71° | 90° | 6746 | 5035 | 3429 | 2347 | 1754 |
| 08-13 | 68° | 84° | 6801 | 5079 | 3463 | 2373 | 1775 |
| 2025 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 08-14 | 64° | 85° | 6853 | 5122 | 3495 | 2398 | 1795 |
| 08-15 | 65° | 90° | 6909 | 5167 | 3531 | 2425 | 1817 |
| 08-16 | 74° | 94° | 6971 | 5220 | 3573 | 2460 | 1847 |
| 08-17 | 70° | 84° | 7026 | 5265 | 3608 | 2487 | 1869 |
| 08-18 | 70° | 84° | 7081 | 5310 | 3643 | 2514 | 1891 |
| 08-19 | 70° | 79° | 7133 | 5352 | 3676 | 2538 | 1910 |
| 08-20 | 69° | 74° | 7183 | 5392 | 3706 | 2560 | 1927 |
| 08-21 | 61° | 76° | 7229 | 5428 | 3732 | 2578 | 1940 |
| 08-22 | 60° | 79° | 7277 | 5465 | 3759 | 2597 | 1954 |
| 08-23 | 64° | 83° | 7329 | 5507 | 3791 | 2621 | 1973 |
| 08-24 | 56° | 73° | 7371 | 5540 | 3813 | 2636 | 1983 |
| 08-25 | 53° | 68° | 7410 | 5568 | 3832 | 2646 | 1988 |
| 2025 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 08-26 | 51° | 72° | 7449 | 5597 | 3851 | 2657 | 1994 |
| 08-27 | 49° | 75° | 7488 | 5627 | 3871 | 2669 | 2001 |
| 08-28 | 60° | 75° | 7534 | 5663 | 3897 | 2687 | 2014 |
| 08-29 | 51° | 71° | 7573 | 5692 | 3915 | 2698 | 2020 |
| 08-30 | 57° | 73° | 7616 | 5725 | 3939 | 2713 | 2030 |
| 08-31 | 51° | 75° | 7657 | 5756 | 3960 | 2726 | 2038 |
| 09-01 | 53° | 77° | 7700 | 5789 | 3983 | 2741 | 2048 |
| 09-02 | 55° | 80° | 7746 | 5825 | 4008 | 2759 | 2061 |
| 09-03 | 57° | 75° | 7790 | 5858 | 4032 | 2774 | 2071 |
| 09-04 | 49° | 66° | 7825 | 5884 | 4047 | 2782 | 2074 |
| 09-05 | 54° | 68° | 7864 | 5913 | 4067 | 2793 | 2080 |
| 09-06 | 45° | 66° | 7897 | 5936 | 4080 | 2798 | 2080 |
| 2025 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 09-07 | 43° | 67° | 7930 | 5959 | 4093 | 2803 | 2080 |
| 09-08 | 42° | 71° | 7965 | 5984 | 4107 | 2810 | 2082 |
| 09-09 | 44° | 75° | 8003 | 6011 | 4125 | 2819 | 2086 |
| 09-10 | 57° | 81° | 8050 | 6049 | 4153 | 2839 | 2101 |
| 09-11 | 62° | 82° | 8100 | 6089 | 4182 | 2861 | 2118 |
| 09-12 | 56° | 84° | 8148 | 6127 | 4210 | 2881 | 2133 |
| 09-13 | 64° | 76° | 8196 | 6165 | 4238 | 2901 | 2148 |
| 09-14 | 62° | 85° | 8247 | 6206 | 4270 | 2924 | 2166 |
| 09-15 | 60° | 85° | 8298 | 6247 | 4300 | 2947 | 2184 |
| 09-16 | 58° | 82° | 8346 | 6285 | 4328 | 2967 | 2199 |
| 09-17 | 56° | 84° | 8394 | 6323 | 4356 | 2987 | 2214 |
| 09-18 | 57° | 87° | 8444 | 6363 | 4386 | 3009 | 2231 |
| 2025 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
| 09-19 | 60° | 89° | 8497 | 6405 | 4419 | 3033 | 2250 |
| 09-20 | 65° | 79° | 8547 | 6446 | 4449 | 3056 | 2268 |
| 09-21 | 64° | 83° | 8599 | 6487 | 4481 | 3079 | 2286 |
| 09-22 | 65° | 80° | 8649 | 6528 | 4511 | 3102 | 2304 |
| 09-23 | 64° | 77° | 8697 | 6566 | 4540 | 3122 | 2319 |
| 09-24 | 62° | 72° | 8742 | 6601 | 4565 | 3139 | 2331 |
| 09-25 | 59° | 73° | 8787 | 6635 | 4589 | 3155 | 2342 |
| 09-26 | 52° | 81° | 8831 | 6670 | 4613 | 3172 | 2354 |
| 09-27 | 58° | 85° | 8881 | 6710 | 4643 | 3194 | 2371 |
| 09-28 | 58° | 83° | 8929 | 6748 | 4672 | 3214 | 2386 |
| 09-29 | 58° | 88° | 8980 | 6789 | 4703 | 3237 | 2404 |
| 09-30 | 59° | 83° | 9029 | 6828 | 4732 | 3258 | 2420 |
| 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.