The GDD models have only been “ground-truthed” in the Great Lakes region. Use of models outside of this region, including the North East, Great Plains and Transition Zones, should be used with caution. We do not recommend the GDD models we use for the mid/southern transition zone and southern states.
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Daily GDD accumulation for various base temperature models in 2024 & 2023
2024 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
---|---|---|---|---|---|---|---|
02-15 | 18° | 29° | 1 | 0 | 0 | 0 | 0 |
02-16 | 7° | 16° | 1 | 0 | 0 | 0 | 0 |
02-17 | 7° | 27° | 1 | 0 | 0 | 0 | 0 |
02-18 | 21° | 36° | 8 | 0 | 0 | 0 | 0 |
02-19 | 16° | 39° | 14 | 0 | 0 | 0 | 0 |
02-20 | 28° | 47° | 29 | 5 | 0 | 0 | 0 |
02-21 | 22° | 48° | 42 | 9 | 0 | 0 | 0 |
02-22 | 26° | 51° | 59 | 15 | 0 | 0 | 0 |
02-23 | 19° | 34° | 63 | 15 | 0 | 0 | 0 |
02-24 | 14° | 41° | 69 | 15 | 0 | 0 | 0 |
02-25 | 29° | 47° | 85 | 22 | 0 | 0 | 0 |
02-26 | 24° | 60° | 105 | 32 | 0 | 0 | 0 |
2024 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
02-27 | 13° | 50° | 115 | 32 | 0 | 0 | 0 |
02-28 | 3° | 18° | 115 | 32 | 0 | 0 | 0 |
02-29 | 8° | 44° | 119 | 32 | 0 | 0 | 0 |
03-01 | 35° | 57° | 142 | 46 | 4 | 0 | 0 |
03-02 | 32° | 58° | 166 | 59 | 7 | 0 | 0 |
03-03 | 41° | 66° | 197 | 80 | 19 | 4 | 0 |
03-04 | 26° | 40° | 208 | 81 | 19 | 4 | 0 |
03-05 | 18° | 47° | 219 | 82 | 19 | 4 | 0 |
03-06 | 25° | 51° | 235 | 88 | 19 | 4 | 0 |
03-07 | 31° | 46° | 251 | 95 | 19 | 4 | 0 |
03-08 | 23° | 39° | 260 | 95 | 19 | 4 | 0 |
03-09 | 19° | 39° | 267 | 95 | 19 | 4 | 0 |
2024 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
03-10 | 16° | 47° | 277 | 95 | 19 | 4 | 0 |
03-11 | 30° | 64° | 303 | 110 | 24 | 4 | 0 |
03-12 | 39° | 66° | 333 | 130 | 34 | 6 | 0 |
03-13 | 34° | 62° | 359 | 146 | 40 | 6 | 0 |
03-14 | 40° | 57° | 386 | 163 | 47 | 6 | 0 |
03-15 | 27° | 50° | 402 | 169 | 47 | 6 | 0 |
03-16 | 33° | 49° | 421 | 178 | 47 | 6 | 0 |
03-17 | 23° | 31° | 426 | 178 | 47 | 6 | 0 |
03-18 | 21° | 36° | 433 | 178 | 47 | 6 | 0 |
03-19 | 32° | 50° | 452 | 187 | 47 | 6 | 0 |
03-20 | 16° | 31° | 454 | 187 | 47 | 6 | 0 |
03-21 | 19° | 32° | 457 | 187 | 47 | 6 | 0 |
2024 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
03-22 | 22° | 32° | 462 | 187 | 47 | 6 | 0 |
03-23 | 8° | 30° | 462 | 187 | 47 | 6 | 0 |
03-24 | 24° | 31° | 468 | 187 | 47 | 6 | 0 |
03-25 | 32° | 36° | 479 | 189 | 47 | 6 | 0 |
03-26 | 20° | 33° | 484 | 189 | 47 | 6 | 0 |
03-27 | 14° | 29° | 484 | 189 | 47 | 6 | 0 |
03-28 | 16° | 36° | 488 | 189 | 47 | 6 | 0 |
03-29 | 12° | 42° | 494 | 189 | 47 | 6 | 0 |
03-30 | 32° | 42° | 508 | 194 | 47 | 6 | 0 |
03-31 | 28° | 43° | 522 | 197 | 47 | 6 | 0 |
04-01 | 30° | 44° | 537 | 203 | 47 | 6 | 0 |
04-02 | 32° | 39° | 550 | 206 | 47 | 6 | 0 |
2024 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
04-03 | 33° | 48° | 569 | 215 | 47 | 6 | 0 |
04-04 | 33° | 51° | 589 | 225 | 47 | 6 | 0 |
04-05 | 27° | 57° | 609 | 235 | 47 | 6 | 0 |
04-06 | 32° | 58° | 632 | 248 | 50 | 6 | 0 |
04-07 | 39° | 46° | 653 | 259 | 51 | 6 | 0 |
04-08 | 41° | 47° | 675 | 271 | 53 | 6 | 0 |
04-09 | 41° | 59° | 703 | 289 | 61 | 6 | 0 |
04-10 | 37° | 68° | 734 | 310 | 72 | 9 | 0 |
04-11 | 41° | 60° | 762 | 328 | 80 | 9 | 0 |
04-12 | 41° | 59° | 790 | 346 | 88 | 9 | 0 |
04-13 | 33° | 79° | 824 | 370 | 102 | 16 | 1 |
04-14 | 41° | 69° | 857 | 393 | 115 | 21 | 1 |
2024 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
04-15 | 42° | 59° | 886 | 412 | 124 | 21 | 1 |
04-16 | 44° | 52° | 913 | 428 | 130 | 21 | 1 |
04-17 | 42° | 48° | 936 | 441 | 133 | 21 | 1 |
04-18 | 42° | 51° | 960 | 456 | 138 | 21 | 1 |
04-19 | 33° | 39° | 974 | 460 | 138 | 21 | 1 |
04-20 | 31° | 47° | 991 | 467 | 138 | 21 | 1 |
04-21 | 32° | 52° | 1011 | 476 | 138 | 21 | 1 |
04-22 | 37° | 68° | 1041 | 497 | 148 | 24 | 1 |
04-23 | 41° | 59° | 1069 | 515 | 156 | 24 | 1 |
04-24 | 30° | 56° | 1090 | 526 | 157 | 24 | 1 |
04-25 | 41° | 67° | 1122 | 548 | 169 | 28 | 1 |
04-26 | 46° | 53° | 1150 | 565 | 177 | 28 | 1 |
2024 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
04-27 | 48° | 56° | 1180 | 585 | 187 | 30 | 1 |
04-28 | 40° | 50° | 1203 | 599 | 190 | 30 | 1 |
04-29 | 41° | 50° | 1227 | 612 | 194 | 30 | 1 |
04-30 | 42° | 66° | 1259 | 634 | 206 | 34 | 1 |
05-01 | 49° | 61° | 1292 | 658 | 219 | 40 | 2 |
05-02 | 48° | 53° | 1321 | 676 | 228 | 40 | 2 |
05-03 | 44° | 70° | 1355 | 701 | 243 | 47 | 3 |
05-04 | 47° | 59° | 1386 | 722 | 254 | 50 | 3 |
05-05 | 37° | 68° | 1417 | 742 | 264 | 52 | 3 |
05-06 | 45° | 72° | 1453 | 769 | 280 | 61 | 7 |
05-07 | 55° | 70° | 1493 | 799 | 301 | 73 | 14 |
05-08 | 43° | 73° | 1530 | 825 | 317 | 81 | 17 |
2024 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
05-09 | 46° | 64° | 1563 | 849 | 330 | 86 | 18 |
05-10 | 37° | 70° | 1594 | 870 | 342 | 90 | 18 |
05-11 | 40° | 73° | 1629 | 895 | 356 | 96 | 19 |
05-12 | 58° | 84° | 1678 | 934 | 386 | 118 | 35 |
05-13 | 47° | 71° | 1715 | 961 | 402 | 126 | 39 |
05-14 | 46° | 71° | 1751 | 987 | 419 | 135 | 42 |
05-15 | 46° | 71° | 1787 | 1013 | 435 | 143 | 46 |
05-16 | 55° | 68° | 1827 | 1043 | 454 | 155 | 52 |
05-17 | 50° | 83° | 1871 | 1077 | 479 | 171 | 64 |
05-18 | 64° | 81° | 1922 | 1118 | 509 | 194 | 81 |
05-19 | 46° | 71° | 1959 | 1144 | 526 | 202 | 85 |
05-20 | 55° | 73° | 2001 | 1177 | 548 | 216 | 94 |
2024 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
05-21 | 61° | 71° | 2045 | 1211 | 573 | 233 | 105 |
05-22 | 54° | 67° | 2084 | 1240 | 591 | 243 | 111 |
05-23 | 52° | 76° | 2126 | 1272 | 613 | 257 | 120 |
05-24 | 52° | 73° | 2166 | 1302 | 634 | 270 | 127 |
05-25 | 46° | 73° | 2204 | 1330 | 651 | 279 | 132 |
05-26 | 56° | 70° | 2245 | 1361 | 672 | 292 | 140 |
05-27 | 47° | 62° | 2277 | 1383 | 685 | 297 | 140 |
05-28 | 53° | 63° | 2313 | 1409 | 700 | 304 | 143 |
05-29 | 45° | 70° | 2349 | 1434 | 716 | 312 | 145 |
05-30 | 51° | 76° | 2390 | 1466 | 737 | 326 | 154 |
05-31 | 59° | 68° | 2432 | 1498 | 759 | 339 | 163 |
06-01 | 59° | 74° | 2477 | 1532 | 784 | 356 | 174 |
2024 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
06-02 | 54° | 76° | 2520 | 1566 | 807 | 371 | 185 |
06-03 | 62° | 80° | 2569 | 1605 | 836 | 392 | 201 |
06-04 | 63° | 85° | 2621 | 1647 | 868 | 417 | 220 |
06-05 | 55° | 75° | 2664 | 1680 | 892 | 432 | 230 |
06-06 | 56° | 66° | 2703 | 1709 | 911 | 443 | 236 |
06-07 | 54° | 75° | 2746 | 1741 | 933 | 457 | 245 |
06-08 | 56° | 74° | 2789 | 1774 | 956 | 472 | 255 |
06-09 | 54° | 67° | 2827 | 1803 | 974 | 482 | 261 |
06-10 | 47° | 72° | 2865 | 1830 | 992 | 492 | 265 |
06-11 | 54° | 79° | 2909 | 1865 | 1017 | 509 | 277 |
06-12 | 54° | 80° | 2954 | 1900 | 1042 | 526 | 289 |
06-13 | 61° | 81° | 3003 | 1939 | 1071 | 547 | 305 |
2024 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
06-14 | 55° | 78° | 3048 | 1974 | 1095 | 563 | 317 |
06-15 | 60° | 71° | 3091 | 2007 | 1119 | 579 | 327 |
06-16 | 63° | 86° | 3144 | 2049 | 1151 | 603 | 346 |
06-17 | 56° | 76° | 3187 | 2083 | 1175 | 619 | 357 |
06-18 | 65° | 83° | 3240 | 2125 | 1207 | 643 | 377 |
06-19 | 61° | 71° | 3284 | 2160 | 1231 | 660 | 388 |
06-20 | 56° | 66° | 3323 | 2189 | 1250 | 670 | 394 |
06-21 | 64° | 70° | 3368 | 2224 | 1275 | 687 | 406 |
06-22 | 57° | 71° | 3410 | 2256 | 1297 | 701 | 415 |
06-23 | 51° | 80° | 3453 | 2289 | 1321 | 717 | 425 |
06-24 | 61° | 82° | 3503 | 2329 | 1350 | 738 | 442 |
06-25 | 68° | 83° | 3557 | 2372 | 1384 | 764 | 462 |
2024 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
06-26 | 62° | 76° | 3604 | 2409 | 1411 | 783 | 476 |
06-27 | 53° | 73° | 3644 | 2440 | 1432 | 796 | 484 |
06-28 | 63° | 76° | 3692 | 2478 | 1459 | 815 | 499 |
06-29 | 58° | 69° | 3734 | 2509 | 1481 | 829 | 507 |
06-30 | 47° | 71° | 3771 | 2537 | 1498 | 839 | 512 |
07-01 | 54° | 75° | 3813 | 2569 | 1521 | 853 | 521 |
07-02 | 58° | 68° | 3855 | 2601 | 1542 | 866 | 530 |
07-03 | 62° | 83° | 3905 | 2641 | 1573 | 889 | 547 |
07-04 | 60° | 70° | 3948 | 2674 | 1596 | 904 | 557 |
07-05 | 61° | 76° | 3995 | 2711 | 1622 | 922 | 571 |
07-06 | 56° | 79° | 4041 | 2746 | 1648 | 940 | 584 |
07-07 | 64° | 79° | 4090 | 2786 | 1677 | 962 | 600 |
2024 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
07-08 | 62° | 78° | 4138 | 2824 | 1706 | 982 | 615 |
07-09 | 60° | 83° | 4188 | 2863 | 1735 | 1003 | 632 |
07-10 | 64° | 82° | 4239 | 2905 | 1766 | 1026 | 650 |
07-11 | 61° | 84° | 4290 | 2945 | 1797 | 1049 | 667 |
07-12 | 64° | 86° | 4343 | 2988 | 1830 | 1074 | 687 |
07-13 | 70° | 82° | 4397 | 3032 | 1864 | 1100 | 709 |
07-14 | 67° | 87° | 4452 | 3077 | 1899 | 1127 | 731 |
07-15 | 65° | 82° | 4504 | 3119 | 1931 | 1151 | 749 |
07-16 | 60° | 78° | 4551 | 3156 | 1958 | 1170 | 764 |
07-17 | 56° | 72° | 4593 | 3188 | 1980 | 1184 | 772 |
07-18 | 53° | 76° | 4635 | 3221 | 2003 | 1199 | 782 |
07-19 | 56° | 79° | 4681 | 3257 | 2029 | 1217 | 795 |
2024 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
07-20 | 61° | 82° | 4731 | 3296 | 2058 | 1238 | 811 |
07-21 | 66° | 80° | 4781 | 3337 | 2089 | 1261 | 829 |
07-22 | 64° | 81° | 4832 | 3377 | 2119 | 1283 | 846 |
07-23 | 62° | 74° | 4877 | 3413 | 2145 | 1301 | 859 |
07-24 | 56° | 74° | 4921 | 3446 | 2168 | 1316 | 869 |
07-25 | 53° | 78° | 4964 | 3480 | 2192 | 1332 | 880 |
07-26 | 62° | 83° | 5015 | 3520 | 2222 | 1354 | 898 |
07-27 | 72° | 89° | 5073 | 3569 | 2261 | 1385 | 923 |
07-28 | 68° | 86° | 5128 | 3614 | 2296 | 1412 | 945 |
07-29 | 67° | 83° | 5181 | 3657 | 2329 | 1437 | 965 |
07-30 | 66° | 84° | 5234 | 3700 | 2361 | 1461 | 985 |
07-31 | 67° | 87° | 5289 | 3745 | 2396 | 1488 | 1007 |
2024 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
08-01 | 65° | 76° | 5337 | 3783 | 2425 | 1509 | 1022 |
08-02 | 61° | 89° | 5391 | 3826 | 2458 | 1534 | 1042 |
08-03 | 57° | 83° | 5438 | 3864 | 2486 | 1554 | 1057 |
08-04 | 65° | 79° | 5488 | 3904 | 2515 | 1576 | 1074 |
08-05 | 59° | 68° | 5530 | 3935 | 2537 | 1589 | 1082 |
08-06 | 52° | 75° | 5571 | 3967 | 2559 | 1603 | 1091 |
08-07 | 53° | 75° | 5613 | 3999 | 2581 | 1617 | 1100 |
08-08 | 59° | 67° | 5654 | 4030 | 2602 | 1630 | 1108 |
08-09 | 56° | 67° | 5694 | 4059 | 2621 | 1641 | 1115 |
08-10 | 51° | 70° | 5733 | 4088 | 2640 | 1652 | 1120 |
08-11 | 51° | 76° | 5774 | 4119 | 2661 | 1665 | 1128 |
08-12 | 52° | 79° | 5817 | 4153 | 2684 | 1680 | 1139 |
2024 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
08-13 | 55° | 81° | 5863 | 4189 | 2710 | 1698 | 1152 |
08-14 | 60° | 80° | 5911 | 4227 | 2738 | 1718 | 1167 |
08-15 | 64° | 78° | 5960 | 4266 | 2767 | 1739 | 1183 |
08-16 | 65° | 75° | 6008 | 4304 | 2795 | 1759 | 1198 |
08-17 | 66° | 75° | 6056 | 4342 | 2823 | 1779 | 1213 |
08-18 | 59° | 79° | 6103 | 4379 | 2850 | 1799 | 1227 |
08-19 | 54° | 78° | 6148 | 4413 | 2875 | 1815 | 1238 |
08-20 | 58° | 73° | 6191 | 4447 | 2899 | 1831 | 1249 |
08-21 | 56° | 75° | 6235 | 4481 | 2922 | 1847 | 1260 |
08-22 | 57° | 70° | 6277 | 4512 | 2944 | 1860 | 1269 |
08-23 | 63° | 77° | 6324 | 4550 | 2972 | 1880 | 1283 |
08-24 | 63° | 84° | 6376 | 4591 | 3003 | 1903 | 1301 |
2024 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
08-25 | 71° | 86° | 6432 | 4638 | 3039 | 1931 | 1325 |
08-26 | 70° | 91° | 6491 | 4687 | 3078 | 1962 | 1351 |
08-27 | 66° | 73° | 6538 | 4724 | 3105 | 1982 | 1365 |
08-28 | 60° | 68° | 6581 | 4756 | 3128 | 1996 | 1374 |
08-29 | 62° | 82° | 6631 | 4797 | 3158 | 2018 | 1392 |
08-30 | 57° | 77° | 6676 | 4831 | 3183 | 2035 | 1404 |
08-31 | 56° | 82° | 6723 | 4868 | 3210 | 2054 | 1418 |
09-01 | 53° | 71° | 6763 | 4898 | 3230 | 2066 | 1425 |
09-02 | 50° | 73° | 6802 | 4928 | 3250 | 2078 | 1431 |
09-03 | 56° | 76° | 6846 | 4962 | 3274 | 2094 | 1442 |
09-04 | 56° | 79° | 6892 | 4998 | 3299 | 2111 | 1455 |
09-05 | 60° | 73° | 6937 | 5032 | 3324 | 2128 | 1467 |
2024 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
09-06 | 48° | 65° | 6971 | 5057 | 3339 | 2135 | 1468 |
09-07 | 41° | 66° | 7003 | 5079 | 3350 | 2138 | 1468 |
09-08 | 50° | 76° | 7044 | 5109 | 3371 | 2151 | 1476 |
09-09 | 54° | 80° | 7089 | 5145 | 3396 | 2169 | 1489 |
09-10 | 62° | 79° | 7138 | 5184 | 3425 | 2189 | 1504 |
09-11 | 60° | 80° | 7186 | 5222 | 3453 | 2209 | 1519 |
09-12 | 58° | 83° | 7234 | 5260 | 3482 | 2230 | 1535 |
09-13 | 59° | 82° | 7283 | 5299 | 3510 | 2250 | 1550 |
09-14 | 65° | 77° | 7332 | 5338 | 3539 | 2271 | 1566 |
09-15 | 67° | 85° | 7386 | 5381 | 3573 | 2297 | 1587 |
09-16 | 66° | 86° | 7440 | 5425 | 3607 | 2323 | 1608 |
09-17 | 66° | 86° | 7494 | 5470 | 3641 | 2349 | 1629 |
2024 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
09-18 | 66° | 83° | 7547 | 5512 | 3674 | 2374 | 1649 |
09-19 | 66° | 84° | 7600 | 5555 | 3707 | 2399 | 1669 |
09-20 | 58° | 78° | 7646 | 5592 | 3733 | 2417 | 1682 |
09-21 | 57° | 76° | 7690 | 5626 | 3757 | 2433 | 1693 |
09-22 | 49° | 67° | 7726 | 5652 | 3773 | 2441 | 1696 |
09-23 | 41° | 68° | 7759 | 5674 | 3786 | 2446 | 1696 |
09-24 | 50° | 71° | 7797 | 5703 | 3805 | 2457 | 1702 |
09-25 | 50° | 77° | 7839 | 5734 | 3826 | 2470 | 1710 |
09-26 | 51° | 81° | 7883 | 5768 | 3850 | 2486 | 1721 |
09-27 | 52° | 81° | 7928 | 5803 | 3875 | 2503 | 1733 |
09-28 | 51° | 83° | 7973 | 5838 | 3900 | 2520 | 1745 |
09-29 | 51° | 81° | 8017 | 5872 | 3924 | 2536 | 1756 |
2024 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
09-30 | 56° | 82° | 8064 | 5910 | 3951 | 2555 | 1771 |
2023 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
---|---|---|---|---|---|---|---|
02-15 | 18° | 37° | 6 | 0 | 0 | 0 | 0 |
02-16 | 10° | 19° | 6 | 0 | 0 | 0 | 0 |
02-17 | -4° | 26° | 6 | 0 | 0 | 0 | 0 |
02-18 | 15° | 37° | 10 | 0 | 0 | 0 | 0 |
02-19 | 22° | 36° | 16 | 0 | 0 | 0 | 0 |
02-20 | 12° | 33° | 17 | 0 | 0 | 0 | 0 |
02-21 | 5° | 16° | 17 | 0 | 0 | 0 | 0 |
02-22 | 14° | 23° | 17 | 0 | 0 | 0 | 0 |
02-23 | 1° | 18° | 17 | 0 | 0 | 0 | 0 |
02-24 | -15° | 11° | 17 | 0 | 0 | 0 | 0 |
02-25 | 3° | 26° | 17 | 0 | 0 | 0 | 0 |
02-26 | -4° | 31° | 17 | 0 | 0 | 0 | 0 |
2023 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
02-27 | 28° | 33° | 26 | 0 | 0 | 0 | 0 |
02-28 | 16° | 37° | 30 | 0 | 0 | 0 | 0 |
02-29 | n/a | n/a | n/a | n/a | n/a | n/a | n/a |
03-01 | 25° | 34° | 37 | 0 | 0 | 0 | 0 |
03-02 | 15° | 30° | 38 | 0 | 0 | 0 | 0 |
03-03 | 22° | 38° | 46 | 0 | 0 | 0 | 0 |
03-04 | 21° | 37° | 53 | 0 | 0 | 0 | 0 |
03-05 | 13° | 38° | 57 | 0 | 0 | 0 | 0 |
03-06 | 32° | 37° | 69 | 2 | 0 | 0 | 0 |
03-07 | 29° | 39° | 81 | 4 | 0 | 0 | 0 |
03-08 | 30° | 35° | 92 | 5 | 0 | 0 | 0 |
03-09 | 30° | 34° | 102 | 5 | 0 | 0 | 0 |
2023 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
03-10 | 26° | 33° | 109 | 5 | 0 | 0 | 0 |
03-11 | 26° | 30° | 116 | 5 | 0 | 0 | 0 |
03-12 | 25° | 32° | 122 | 5 | 0 | 0 | 0 |
03-13 | 16° | 29° | 123 | 5 | 0 | 0 | 0 |
03-14 | -3° | 32° | 123 | 5 | 0 | 0 | 0 |
03-15 | 27° | 43° | 135 | 8 | 0 | 0 | 0 |
03-16 | 24° | 42° | 146 | 9 | 0 | 0 | 0 |
03-17 | 8° | 23° | 146 | 9 | 0 | 0 | 0 |
03-18 | 9° | 27° | 146 | 9 | 0 | 0 | 0 |
03-19 | 8° | 38° | 148 | 9 | 0 | 0 | 0 |
03-20 | 21° | 37° | 154 | 9 | 0 | 0 | 0 |
03-21 | 21° | 36° | 161 | 9 | 0 | 0 | 0 |
2023 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
03-22 | 31° | 38° | 173 | 11 | 0 | 0 | 0 |
03-23 | 23° | 35° | 180 | 11 | 0 | 0 | 0 |
03-24 | 9° | 40° | 183 | 11 | 0 | 0 | 0 |
03-25 | 27° | 42° | 196 | 14 | 0 | 0 | 0 |
03-26 | 25° | 40° | 206 | 14 | 0 | 0 | 0 |
03-27 | 22° | 37° | 214 | 14 | 0 | 0 | 0 |
03-28 | 16° | 35° | 217 | 14 | 0 | 0 | 0 |
03-29 | 10° | 27° | 217 | 14 | 0 | 0 | 0 |
03-30 | 13° | 33° | 219 | 14 | 0 | 0 | 0 |
03-31 | 32° | 38° | 231 | 17 | 0 | 0 | 0 |
04-01 | 25° | 38° | 241 | 17 | 0 | 0 | 0 |
04-02 | 28° | 50° | 258 | 24 | 0 | 0 | 0 |
2023 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
04-03 | 34° | 44° | 276 | 32 | 0 | 0 | 0 |
04-04 | 33° | 38° | 289 | 35 | 0 | 0 | 0 |
04-05 | 26° | 35° | 298 | 35 | 0 | 0 | 0 |
04-06 | 23° | 36° | 305 | 35 | 0 | 0 | 0 |
04-07 | 20° | 46° | 316 | 36 | 0 | 0 | 0 |
04-08 | 35° | 55° | 339 | 49 | 3 | 0 | 0 |
04-09 | 44° | 60° | 369 | 69 | 13 | 2 | 0 |
04-10 | 35° | 66° | 398 | 88 | 22 | 3 | 0 |
04-11 | 45° | 80° | 438 | 118 | 42 | 15 | 7 |
04-12 | 58° | 87° | 489 | 158 | 73 | 38 | 25 |
04-13 | 56° | 86° | 538 | 198 | 102 | 59 | 41 |
04-14 | 58° | 82° | 586 | 236 | 130 | 79 | 56 |
2023 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
04-15 | 40° | 59° | 613 | 253 | 137 | 79 | 56 |
04-16 | 31° | 39° | 626 | 256 | 137 | 79 | 56 |
04-17 | 31° | 46° | 643 | 263 | 137 | 79 | 56 |
04-18 | 28° | 56° | 663 | 273 | 138 | 79 | 56 |
04-19 | 36° | 47° | 682 | 282 | 138 | 79 | 56 |
04-20 | 36° | 43° | 700 | 290 | 138 | 79 | 56 |
04-21 | 33° | 39° | 714 | 294 | 138 | 79 | 56 |
04-22 | 32° | 36° | 726 | 295 | 138 | 79 | 56 |
04-23 | 29° | 43° | 739 | 299 | 138 | 79 | 56 |
04-24 | 32° | 44° | 755 | 305 | 138 | 79 | 56 |
04-25 | 30° | 47° | 772 | 311 | 138 | 79 | 56 |
04-26 | 26° | 54° | 790 | 320 | 138 | 79 | 56 |
2023 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
04-27 | 48° | 60° | 821 | 341 | 149 | 83 | 56 |
04-28 | 40° | 50° | 845 | 355 | 153 | 83 | 56 |
04-29 | 38° | 50° | 866 | 366 | 154 | 83 | 56 |
04-30 | 36° | 46° | 885 | 375 | 154 | 83 | 56 |
05-01 | 40° | 54° | 910 | 390 | 159 | 83 | 56 |
05-02 | 39° | 61° | 938 | 408 | 167 | 83 | 56 |
05-03 | 33° | 68° | 967 | 427 | 176 | 84 | 56 |
05-04 | 50° | 74° | 1007 | 457 | 196 | 96 | 63 |
05-05 | 46° | 67° | 1042 | 481 | 211 | 103 | 65 |
05-06 | 55° | 64° | 1079 | 509 | 228 | 112 | 70 |
05-07 | 56° | 75° | 1123 | 542 | 252 | 128 | 80 |
05-08 | 50° | 71° | 1161 | 571 | 270 | 138 | 86 |
2023 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
05-09 | 54° | 70° | 1201 | 601 | 290 | 150 | 93 |
05-10 | 58° | 76° | 1246 | 636 | 315 | 167 | 105 |
05-11 | 63° | 75° | 1293 | 673 | 342 | 186 | 118 |
05-12 | 63° | 76° | 1340 | 710 | 369 | 205 | 133 |
05-13 | 58° | 68° | 1381 | 741 | 390 | 218 | 141 |
05-14 | 52° | 70° | 1421 | 770 | 410 | 230 | 147 |
05-15 | 44° | 76° | 1459 | 799 | 428 | 240 | 152 |
05-16 | 52° | 79° | 1502 | 832 | 451 | 255 | 163 |
05-17 | 47° | 65° | 1536 | 856 | 465 | 261 | 164 |
05-18 | 54° | 65° | 1574 | 884 | 483 | 271 | 169 |
05-19 | 45° | 59° | 1604 | 904 | 493 | 273 | 169 |
05-20 | 40° | 73° | 1639 | 929 | 508 | 280 | 170 |
2023 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
05-21 | 46° | 78° | 1679 | 959 | 528 | 292 | 177 |
05-22 | 51° | 78° | 1722 | 991 | 551 | 307 | 187 |
05-23 | 55° | 83° | 1768 | 1028 | 578 | 325 | 201 |
05-24 | 53° | 70° | 1808 | 1058 | 597 | 337 | 207 |
05-25 | 54° | 76° | 1851 | 1091 | 620 | 352 | 218 |
05-26 | 50° | 78° | 1893 | 1123 | 642 | 366 | 227 |
05-27 | 47° | 81° | 1936 | 1156 | 665 | 381 | 236 |
05-28 | 50° | 81° | 1979 | 1189 | 688 | 396 | 247 |
05-29 | 61° | 85° | 2030 | 1230 | 719 | 419 | 265 |
05-30 | 64° | 85° | 2083 | 1273 | 752 | 444 | 284 |
05-31 | 65° | 88° | 2137 | 1317 | 787 | 470 | 306 |
06-01 | 70° | 90° | 2195 | 1365 | 824 | 500 | 331 |
2023 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
06-02 | 70° | 89° | 2253 | 1413 | 862 | 530 | 355 |
06-03 | 66° | 89° | 2308 | 1458 | 897 | 557 | 378 |
06-04 | 66° | 88° | 2363 | 1503 | 932 | 584 | 400 |
06-05 | 64° | 85° | 2416 | 1546 | 965 | 609 | 419 |
06-06 | 63° | 83° | 2467 | 1587 | 996 | 632 | 437 |
06-07 | 61° | 79° | 2514 | 1624 | 1023 | 651 | 452 |
06-08 | 56° | 79° | 2560 | 1659 | 1049 | 669 | 464 |
06-09 | 50° | 83° | 2604 | 1694 | 1073 | 685 | 476 |
06-10 | 58° | 78° | 2650 | 1730 | 1099 | 703 | 489 |
06-11 | 46° | 68° | 2685 | 1755 | 1114 | 710 | 490 |
06-12 | 48° | 78° | 2726 | 1786 | 1135 | 723 | 498 |
06-13 | 52° | 84° | 2772 | 1822 | 1161 | 741 | 511 |
2023 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
06-14 | 55° | 79° | 2817 | 1857 | 1186 | 758 | 523 |
06-15 | 54° | 70° | 2857 | 1887 | 1206 | 770 | 530 |
06-16 | 45° | 76° | 2895 | 1915 | 1224 | 780 | 536 |
06-17 | 52° | 82° | 2941 | 1950 | 1250 | 798 | 548 |
06-18 | 65° | 79° | 2991 | 1991 | 1280 | 820 | 565 |
06-19 | 67° | 86° | 3045 | 2035 | 1314 | 846 | 587 |
06-20 | 69° | 89° | 3103 | 2083 | 1352 | 876 | 611 |
06-21 | 64° | 89° | 3157 | 2127 | 1386 | 902 | 632 |
06-22 | 65° | 90° | 3212 | 2172 | 1422 | 929 | 655 |
06-23 | 67° | 89° | 3268 | 2218 | 1457 | 957 | 678 |
06-24 | 67° | 86° | 3323 | 2262 | 1492 | 984 | 699 |
06-25 | 63° | 73° | 3369 | 2299 | 1518 | 1002 | 712 |
2023 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
06-26 | 63° | 81° | 3419 | 2338 | 1548 | 1024 | 729 |
06-27 | 59° | 84° | 3468 | 2378 | 1577 | 1045 | 746 |
06-28 | 67° | 84° | 3522 | 2422 | 1611 | 1071 | 766 |
06-29 | 60° | 88° | 3574 | 2464 | 1643 | 1095 | 785 |
06-30 | 61° | 84° | 3624 | 2504 | 1673 | 1117 | 803 |
07-01 | 62° | 85° | 3676 | 2546 | 1705 | 1141 | 821 |
07-02 | 65° | 87° | 3730 | 2590 | 1739 | 1167 | 842 |
07-03 | 69° | 93° | 3789 | 2639 | 1778 | 1198 | 868 |
07-04 | 65° | 79° | 3839 | 2679 | 1808 | 1220 | 885 |
07-05 | 62° | 75° | 3885 | 2715 | 1834 | 1238 | 899 |
07-06 | 50° | 74° | 3925 | 2745 | 1854 | 1250 | 906 |
07-07 | 52° | 75° | 3967 | 2777 | 1876 | 1264 | 914 |
2023 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
07-08 | 56° | 78° | 4012 | 2812 | 1901 | 1281 | 926 |
07-09 | 52° | 85° | 4058 | 2848 | 1927 | 1299 | 939 |
07-10 | 70° | 88° | 4115 | 2895 | 1964 | 1328 | 964 |
07-11 | 50° | 74° | 4155 | 2925 | 1985 | 1340 | 971 |
07-12 | 58° | 75° | 4200 | 2960 | 2009 | 1357 | 982 |
07-13 | 61° | 84° | 4251 | 3001 | 2040 | 1380 | 1000 |
07-14 | 60° | 87° | 4302 | 3042 | 2071 | 1403 | 1019 |
07-15 | 60° | 79° | 4349 | 3079 | 2099 | 1422 | 1033 |
07-16 | 52° | 77° | 4392 | 3112 | 2121 | 1437 | 1042 |
07-17 | 54° | 73° | 4434 | 3144 | 2143 | 1451 | 1051 |
07-18 | 52° | 81° | 4478 | 3178 | 2167 | 1467 | 1062 |
07-19 | 61° | 88° | 4530 | 3220 | 2199 | 1491 | 1082 |
2023 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
07-20 | 61° | 76° | 4577 | 3257 | 2226 | 1510 | 1095 |
07-21 | 56° | 80° | 4623 | 3293 | 2252 | 1528 | 1108 |
07-22 | 56° | 79° | 4669 | 3328 | 2278 | 1546 | 1121 |
07-23 | 59° | 84° | 4718 | 3368 | 2307 | 1567 | 1137 |
07-24 | 61° | 85° | 4769 | 3409 | 2338 | 1590 | 1155 |
07-25 | 67° | 92° | 4826 | 3456 | 2375 | 1619 | 1179 |
07-26 | 69° | 91° | 4884 | 3504 | 2414 | 1649 | 1205 |
07-27 | 70° | 95° | 4945 | 3555 | 2454 | 1682 | 1232 |
07-28 | 67° | 85° | 4999 | 3599 | 2488 | 1708 | 1254 |
07-29 | 59° | 79° | 5046 | 3636 | 2515 | 1727 | 1267 |
07-30 | 56° | 79° | 5092 | 3671 | 2541 | 1745 | 1280 |
07-31 | 56° | 82° | 5139 | 3709 | 2568 | 1764 | 1294 |
2023 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
08-01 | 60° | 84° | 5189 | 3749 | 2598 | 1786 | 1311 |
08-02 | 68° | 90° | 5246 | 3796 | 2635 | 1815 | 1335 |
08-03 | 69° | 91° | 5304 | 3844 | 2673 | 1845 | 1361 |
08-04 | 65° | 86° | 5358 | 3888 | 2707 | 1871 | 1381 |
08-05 | 68° | 82° | 5411 | 3931 | 2740 | 1896 | 1401 |
08-06 | 66° | 74° | 5458 | 3968 | 2768 | 1915 | 1416 |
08-07 | 62° | 82° | 5508 | 4008 | 2797 | 1937 | 1433 |
08-08 | 55° | 83° | 5555 | 4045 | 2824 | 1956 | 1446 |
08-09 | 60° | 79° | 5603 | 4082 | 2852 | 1976 | 1461 |
08-10 | 59° | 76° | 5648 | 4118 | 2877 | 1993 | 1473 |
08-11 | 63° | 82° | 5699 | 4159 | 2908 | 2016 | 1491 |
08-12 | 59° | 79° | 5746 | 4196 | 2935 | 2035 | 1505 |
2023 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
08-13 | 61° | 72° | 5790 | 4230 | 2959 | 2051 | 1516 |
08-14 | 59° | 71° | 5833 | 4263 | 2982 | 2066 | 1527 |
08-15 | 52° | 81° | 5878 | 4298 | 3007 | 2083 | 1538 |
08-16 | 63° | 84° | 5930 | 4339 | 3039 | 2107 | 1557 |
08-17 | 59° | 72° | 5973 | 4373 | 3062 | 2122 | 1567 |
08-18 | 50° | 76° | 6014 | 4404 | 3083 | 2135 | 1575 |
08-19 | 66° | 90° | 6070 | 4450 | 3119 | 2163 | 1598 |
08-20 | 62° | 77° | 6117 | 4487 | 3146 | 2182 | 1612 |
08-21 | 60° | 73° | 6161 | 4521 | 3171 | 2198 | 1624 |
08-22 | 70° | 94° | 6222 | 4571 | 3211 | 2231 | 1651 |
08-23 | 73° | 88° | 6280 | 4620 | 3249 | 2261 | 1676 |
08-24 | 67° | 78° | 6330 | 4660 | 3279 | 2283 | 1694 |
2023 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
08-25 | 64° | 83° | 6382 | 4702 | 3311 | 2307 | 1712 |
08-26 | 60° | 68° | 6424 | 4734 | 3333 | 2321 | 1721 |
08-27 | 50° | 74° | 6464 | 4764 | 3353 | 2333 | 1728 |
08-28 | 59° | 83° | 6513 | 4803 | 3382 | 2354 | 1744 |
08-29 | 61° | 78° | 6561 | 4840 | 3410 | 2374 | 1759 |
08-30 | 55° | 77° | 6604 | 4874 | 3433 | 2389 | 1770 |
08-31 | 55° | 79° | 6650 | 4910 | 3459 | 2407 | 1782 |
09-01 | 62° | 88° | 6703 | 4953 | 3492 | 2432 | 1802 |
09-02 | 70° | 86° | 6759 | 4999 | 3528 | 2460 | 1825 |
09-03 | 75° | 95° | 6822 | 5051 | 3571 | 2495 | 1855 |
09-04 | 72° | 96° | 6883 | 5103 | 3613 | 2528 | 1884 |
09-05 | 74° | 89° | 6943 | 5153 | 3652 | 2560 | 1910 |
2023 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
09-06 | 59° | 74° | 6987 | 5187 | 3676 | 2576 | 1922 |
09-07 | 56° | 62° | 7024 | 5214 | 3694 | 2585 | 1926 |
09-08 | 47° | 75° | 7063 | 5243 | 3712 | 2596 | 1931 |
09-09 | 54° | 75° | 7106 | 5276 | 3735 | 2611 | 1941 |
09-10 | 57° | 71° | 7148 | 5308 | 3757 | 2625 | 1950 |
09-11 | 47° | 69° | 7184 | 5334 | 3773 | 2633 | 1953 |
09-12 | 49° | 60° | 7216 | 5356 | 3785 | 2637 | 1953 |
09-13 | 40° | 63° | 7245 | 5375 | 3794 | 2638 | 1953 |
09-14 | 45° | 80° | 7286 | 5406 | 3815 | 2651 | 1961 |
09-15 | 56° | 73° | 7328 | 5438 | 3837 | 2665 | 1970 |
09-16 | 48° | 69° | 7365 | 5465 | 3854 | 2674 | 1974 |
09-17 | 44° | 69° | 7399 | 5489 | 3868 | 2680 | 1975 |
2023 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
09-18 | 49° | 75° | 7439 | 5519 | 3888 | 2692 | 1982 |
09-19 | 57° | 78° | 7485 | 5554 | 3914 | 2710 | 1995 |
09-20 | 58° | 83° | 7533 | 5593 | 3943 | 2730 | 2010 |
09-21 | 58° | 83° | 7582 | 5631 | 3971 | 2751 | 2026 |
09-22 | 58° | 73° | 7625 | 5665 | 3994 | 2766 | 2036 |
09-23 | 63° | 73° | 7671 | 5701 | 4020 | 2784 | 2049 |
09-24 | 59° | 67° | 7712 | 5731 | 4041 | 2797 | 2057 |
09-25 | 58° | 63° | 7750 | 5760 | 4060 | 2807 | 2062 |
09-26 | 60° | 66° | 7791 | 5791 | 4081 | 2820 | 2070 |
09-27 | 60° | 69° | 7834 | 5824 | 4103 | 2835 | 2080 |
09-28 | 60° | 69° | 7876 | 5856 | 4126 | 2849 | 2089 |
09-29 | 59° | 71° | 7920 | 5890 | 4149 | 2865 | 2100 |
2023 | Lo (F) | Hi (F) | GDD 22 | GDD 32 | GDD 42 | GDD 50 | GDD 55 |
09-30 | 65° | 83° | 7971 | 5931 | 4180 | 2888 | 2118 |
Don't miss this update from from Kevin Frank regarding timing of crabgrass preemergence herbicides.