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Crabgrass Germination Prediction (GDD 50)
through Tue, Dec. 3. 2024

 
  

Kalamazoo, MI

        

Generously Supported By:



Tabular Data

Daily GDD accumulation for various base temperature models in 2024 & 2023

2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-15 31° 38° 12 2 0 0 0
02-16 23° 31° 18 2 0 0 0
02-17 17° 24° 18 2 0 0 0
02-18 17° 36° 22 2 0 0 0
02-19 15° 44° 30 2 0 0 0
02-20 22° 52° 45 8 0 0 0
02-21 38° 62° 73 26 8 0 0
02-22 37° 57° 98 41 13 0 0
02-23 29° 50° 116 48 13 0 0
02-24 16° 31° 118 48 13 0 0
02-25 26° 55° 136 56 13 0 0
02-26 33° 63° 162 73 19 0 0
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 54° 72° 203 103 40 13 8
02-28 18° 60° 220 110 40 13 8
02-29 17° 37° 225 110 40 13 8
03-01 27° 46° 239 114 40 13 8
03-02 39° 52° 263 128 44 13 8
03-03 40° 66° 294 149 55 16 8
03-04 51° 71° 333 178 74 27 14
03-05 43° 63° 364 199 85 30 14
03-06 36° 48° 384 210 85 30 14
03-07 32° 47° 402 217 85 30 14
03-08 37° 52° 425 230 88 30 14
03-09 32° 51° 445 240 88 30 14
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-10 30° 36° 456 241 88 30 14
03-11 26° 61° 478 253 90 30 14
03-12 46° 69° 513 278 105 38 16
03-13 48° 70° 550 306 123 47 20
03-14 42° 61° 580 325 132 48 20
03-15 34° 52° 601 336 133 48 20
03-16 32° 58° 624 349 136 48 20
03-17 29° 41° 637 352 136 48 20
03-18 22° 32° 643 352 136 48 20
03-19 27° 46° 658 357 136 48 20
03-20 24° 36° 666 357 136 48 20
03-21 17° 36° 671 357 136 48 20
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-22 28° 35° 680 357 136 48 20
03-23 27° 36° 689 357 136 48 20
03-24 22° 43° 700 358 136 48 20
03-25 33° 66° 727 376 144 48 20
03-26 41° 61° 757 395 153 49 20
03-27 31° 39° 770 398 153 49 20
03-28 27° 46° 784 402 153 49 20
03-29 23° 53° 800 408 153 49 20
03-30 40° 56° 825 424 159 49 20
03-31 38° 51° 848 436 161 49 20
04-01 40° 56° 874 452 167 49 20
04-02 40° 50° 898 466 171 49 20
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-03 35° 40° 913 471 171 49 20
04-04 35° 43° 930 478 171 49 20
04-05 35° 48° 949 488 171 49 20
04-06 30° 57° 971 499 172 49 20
04-07 34° 58° 995 513 176 49 20
04-08 44° 73° 1031 539 192 58 24
04-09 49° 68° 1068 566 209 67 28
04-10 39° 65° 1098 586 219 68 28
04-11 47° 54° 1126 604 227 68 28
04-12 45° 55° 1154 622 235 68 28
04-13 39° 59° 1181 639 242 68 28
04-14 54° 74° 1223 671 264 82 36
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-15 50° 68° 1260 698 281 91 40
04-16 47° 71° 1297 725 298 100 45
04-17 56° 68° 1337 755 318 112 52
04-18 48° 58° 1368 776 329 115 52
04-19 44° 52° 1394 792 335 115 52
04-20 36° 44° 1412 800 335 115 52
04-21 35° 46° 1430 809 335 115 52
04-22 36° 64° 1458 826 343 115 52
04-23 50° 56° 1489 848 354 118 52
04-24 35° 48° 1509 857 354 118 52
04-25 29° 56° 1530 868 355 118 52
04-26 36° 62° 1557 885 362 118 52
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-27 53° 80° 1601 919 386 135 63
04-28 62° 77° 1649 957 414 154 77
04-29 61° 70° 1692 990 437 170 88
04-30 47° 66° 1727 1015 452 176 89
05-01 55° 77° 1770 1048 476 192 100
05-02 49° 76° 1811 1079 496 205 108
05-03 59° 69° 1853 1111 518 219 117
05-04 54° 77° 1896 1145 542 234 127
05-05 51° 64° 1932 1170 557 242 130
05-06 48° 71° 1970 1198 575 251 134
05-07 55° 69° 2009 1228 595 263 141
05-08 49° 75° 2049 1257 615 275 148
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-09 51° 60° 2083 1281 628 281 149
05-10 47° 64° 2117 1305 642 286 150
05-11 48° 58° 2148 1326 653 289 150
05-12 40° 76° 2183 1351 668 297 152
05-13 63° 80° 2233 1391 698 318 169
05-14 59° 70° 2275 1423 720 332 178
05-15 53° 74° 2316 1454 741 346 186
05-16 50° 75° 2356 1484 761 358 193
05-17 57° 79° 2402 1520 787 376 206
05-18 53° 83° 2448 1556 813 393 219
05-19 62° 84° 2499 1597 844 417 237
05-20 55° 85° 2547 1635 872 437 252
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-21 59° 86° 2598 1676 903 459 270
05-22 62° 79° 2646 1714 931 480 285
05-23 54° 77° 2690 1748 955 495 296
05-24 53° 80° 2734 1783 980 512 307
05-25 56° 72° 2777 1815 1002 526 317
05-26 52° 77° 2819 1847 1024 540 326
05-27 56° 65° 2857 1875 1042 550 331
05-28 53° 68° 2895 1903 1061 561 336
05-29 55° 68° 2935 1933 1080 573 343
05-30 47° 71° 2972 1960 1097 582 347
05-31 47° 76° 3012 1990 1117 593 354
06-01 54° 75° 3054 2022 1139 607 363
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-02 59° 72° 3097 2055 1162 623 373
06-03 53° 82° 3143 2091 1188 640 386
06-04 64° 85° 3195 2133 1221 665 405
06-05 62° 78° 3243 2171 1249 685 420
06-06 60° 76° 3289 2207 1274 703 433
06-07 56° 72° 3331 2239 1297 717 442
06-08 51° 77° 3373 2271 1318 731 451
06-09 53° 75° 3415 2303 1340 744 460
06-10 51° 68° 3452 2330 1357 754 464
06-11 44° 73° 3489 2357 1374 762 468
06-12 60° 85° 3539 2398 1405 785 485
06-13 69° 88° 3596 2444 1441 813 509
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-14 62° 82° 3646 2484 1471 835 526
06-15 59° 81° 3693 2521 1498 855 540
06-16 63° 89° 3747 2565 1532 881 561
06-17 70° 91° 3806 2614 1571 911 587
06-18 76° 88° 3865 2663 1611 943 613
06-19 75° 90° 3926 2714 1651 976 641
06-20 71° 89° 3984 2762 1689 1006 666
06-21 72° 89° 4042 2810 1728 1036 691
06-22 74° 89° 4101 2860 1767 1067 717
06-23 64° 82° 4152 2900 1797 1090 735
06-24 59° 80° 4200 2938 1825 1109 750
06-25 66° 82° 4252 2980 1857 1133 769
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-26 66° 80° 4303 3021 1888 1157 787
06-27 56° 73° 4346 3054 1911 1171 797
06-28 60° 73° 4390 3088 1936 1188 808
06-29 68° 83° 4444 3132 1969 1214 829
06-30 58° 74° 4488 3166 1993 1230 840
07-01 48° 74° 4527 3195 2012 1241 846
07-02 57° 78° 4572 3230 2037 1258 858
07-03 69° 84° 4627 3275 2072 1284 880
07-04 63° 80° 4676 3314 2101 1306 896
07-05 61° 82° 4726 3354 2131 1327 913
07-06 62° 75° 4773 3391 2158 1346 927
07-07 57° 84° 4821 3429 2186 1367 942
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-08 68° 85° 4875 3473 2221 1393 963
07-09 67° 81° 4928 3516 2253 1417 983
07-10 65° 75° 4976 3554 2281 1437 998
07-11 61° 81° 5025 3593 2310 1459 1014
07-12 65° 83° 5077 3635 2342 1483 1033
07-13 65° 86° 5130 3678 2375 1508 1053
07-14 68° 82° 5183 3721 2408 1533 1073
07-15 69° 85° 5238 3766 2443 1560 1095
07-16 67° 82° 5291 3809 2476 1584 1115
07-17 63° 79° 5340 3848 2505 1605 1131
07-18 56° 72° 5382 3880 2527 1619 1140
07-19 52° 77° 5424 3912 2549 1634 1149
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-20 55° 79° 5469 3947 2574 1650 1161
07-21 58° 80° 5516 3984 2601 1669 1175
07-22 63° 79° 5565 4023 2630 1690 1191
07-23 59° 81° 5613 4061 2658 1710 1206
07-24 63° 75° 5660 4098 2685 1730 1220
07-25 57° 77° 5705 4133 2710 1747 1232
07-26 55° 78° 5750 4168 2735 1763 1244
07-27 56° 81° 5796 4204 2761 1782 1257
07-28 60° 84° 5846 4244 2791 1804 1274
07-29 71° 84° 5901 4289 2827 1831 1296
07-30 69° 84° 5956 4334 2861 1857 1318
07-31 66° 85° 6009 4378 2895 1883 1338
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-01 69° 84° 6064 4422 2929 1910 1360
08-02 69° 82° 6117 4465 2962 1935 1380
08-03 65° 87° 6171 4509 2996 1961 1401
08-04 63° 86° 6224 4552 3029 1985 1421
08-05 71° 81° 6278 4596 3063 2011 1442
08-06 64° 75° 6325 4634 3091 2031 1456
08-07 58° 78° 6371 4669 3116 2049 1469
08-08 56° 80° 6417 4705 3142 2067 1482
08-09 62° 71° 6462 4740 3167 2084 1494
08-10 56° 71° 6504 4772 3189 2097 1503
08-11 55° 74° 6546 4804 3212 2112 1512
08-12 56° 79° 6592 4840 3237 2129 1525
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-13 55° 81° 6638 4876 3263 2148 1538
08-14 58° 83° 6686 4915 3292 2168 1553
08-15 64° 71° 6732 4950 3318 2186 1566
08-16 66° 84° 6785 4993 3351 2211 1586
08-17 68° 76° 6835 5033 3381 2233 1603
08-18 67° 76° 6885 5073 3410 2254 1620
08-19 59° 73° 6929 5107 3434 2270 1631
08-20 50° 70° 6967 5135 3452 2280 1636
08-21 48° 73° 7005 5163 3470 2291 1641
08-22 50° 76° 7046 5194 3491 2303 1649
08-23 51° 79° 7089 5227 3514 2319 1659
08-24 56° 86° 7138 5266 3543 2340 1675
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-25 69° 90° 7195 5313 3580 2369 1699
08-26 73° 92° 7255 5363 3621 2401 1726
08-27 75° 94° 7318 5416 3663 2435 1756
08-28 71° 83° 7373 5461 3698 2463 1778
08-29 67° 84° 7427 5505 3732 2488 1799
08-30 69° 85° 7482 5550 3767 2516 1821
08-31 63° 81° 7532 5590 3797 2538 1838
09-01 61° 78° 7580 5628 3825 2557 1853
09-02 48° 72° 7618 5656 3843 2567 1858
09-03 47° 75° 7657 5685 3862 2579 1864
09-04 49° 81° 7700 5718 3885 2594 1874
09-05 57° 85° 7749 5757 3914 2614 1890
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-06 55° 71° 7790 5788 3935 2627 1898
09-07 45° 63° 7822 5810 3947 2631 1898
09-08 40° 69° 7854 5832 3960 2636 1898
09-09 53° 77° 7897 5865 3982 2651 1907
09-10 53° 81° 7942 5900 4007 2668 1919
09-11 50° 85° 7988 5936 4033 2685 1932
09-12 53° 87° 8036 5974 4061 2705 1947
09-13 59° 85° 8086 6014 4091 2728 1964
09-14 59° 87° 8137 6055 4122 2751 1982
09-15 59° 88° 8188 6097 4154 2774 2001
09-16 55° 87° 8238 6136 4183 2795 2017
09-17 54° 83° 8284 6172 4209 2814 2030
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-18 54° 85° 8331 6209 4237 2833 2045
09-19 57° 85° 8381 6249 4266 2854 2061
09-20 63° 84° 8432 6290 4297 2877 2079
09-21 57° 86° 8481 6329 4327 2899 2096
09-22 63° 74° 8528 6366 4353 2917 2109
09-23 57° 67° 8568 6396 4373 2929 2116
09-24 61° 69° 8611 6429 4396 2944 2126
09-25 57° 71° 8653 6461 4418 2959 2135
09-26 51° 73° 8693 6491 4438 2971 2143
09-27 59° 73° 8737 6525 4462 2987 2154
09-28 61° 71° 8781 6560 4487 3003 2165
09-29 63° 74° 8828 6596 4513 3022 2178
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-30 58° 76° 8873 6631 4538 3038 2190
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-15 38° 54° 24 14 4 0 0
02-16 26° 37° 33 14 4 0 0
02-17 18° 25° 33 14 4 0 0
02-18 19° 43° 42 14 4 0 0
02-19 36° 53° 64 26 6 0 0
02-20 26° 45° 78 29 6 0 0
02-21 27° 37° 88 29 6 0 0
02-22 29° 33° 97 29 6 0 0
02-23 30° 42° 111 34 6 0 0
02-24 23° 29° 115 34 6 0 0
02-25 26° 34° 122 34 6 0 0
02-26 25° 41° 133 34 6 0 0
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 32° 40° 147 39 6 0 0
02-28 34° 46° 166 47 6 0 0
02-29 n/a n/a n/a n/a n/a n/a n/a
03-01 36° 55° 189 60 9 0 0
03-02 31° 41° 203 65 9 0 0
03-03 30° 36° 214 66 9 0 0
03-04 28° 41° 227 68 9 0 0
03-05 31° 48° 244 75 9 0 0
03-06 35° 42° 261 82 9 0 0
03-07 31° 43° 276 87 9 0 0
03-08 28° 44° 290 91 9 0 0
03-09 31° 44° 306 97 9 0 0
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-10 30° 36° 316 97 9 0 0
03-11 28° 38° 328 99 9 0 0
03-12 30° 34° 337 99 9 0 0
03-13 25° 32° 344 99 9 0 0
03-14 20° 35° 349 99 9 0 0
03-15 18° 45° 359 99 9 0 0
03-16 38° 52° 382 112 12 0 0
03-17 31° 50° 400 120 12 0 0
03-18 18° 29° 402 120 12 0 0
03-19 16° 35° 406 120 12 0 0
03-20 27° 49° 422 126 12 0 0
03-21 34° 53° 443 138 14 0 0
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-22 40° 48° 465 150 16 0 0
03-23 36° 47° 485 159 16 0 0
03-24 32° 46° 502 167 16 0 0
03-25 34° 41° 518 172 16 0 0
03-26 31° 47° 535 179 16 0 0
03-27 34° 49° 554 188 16 0 0
03-28 27° 47° 569 193 16 0 0
03-29 25° 39° 579 193 16 0 0
03-30 17° 47° 589 193 16 0 0
03-31 45° 62° 620 215 27 4 0
04-01 35° 57° 644 229 31 4 0
04-02 30° 49° 662 236 31 4 0
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-03 42° 54° 688 252 37 4 0
04-04 44° 57° 716 271 46 4 0
04-05 43° 71° 751 296 60 11 2
04-06 34° 46° 769 303 60 11 2
04-07 32° 50° 788 312 60 11 2
04-08 36° 58° 813 327 65 11 2
04-09 37° 65° 841 346 74 12 2
04-10 41° 67° 873 368 86 16 2
04-11 50° 75° 914 398 107 28 9
04-12 59° 80° 961 436 134 48 24
04-13 57° 81° 1008 473 161 66 37
04-14 47° 82° 1051 505 184 81 47
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-15 59° 80° 1098 543 211 100 61
04-16 40° 69° 1130 565 223 105 61
04-17 32° 39° 1144 568 223 105 61
04-18 33° 47° 1161 576 223 105 61
04-19 32° 64° 1187 592 229 105 61
04-20 47° 78° 1228 622 249 117 69
04-21 45° 62° 1259 643 260 120 69
04-22 35° 49° 1279 654 261 120 69
04-23 35° 43° 1297 661 261 120 69
04-24 34° 48° 1315 670 261 120 69
04-25 33° 45° 1333 677 261 120 69
04-26 31° 52° 1352 687 261 120 69
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-27 31° 63° 1377 701 265 120 69
04-28 44° 56° 1405 719 273 120 69
04-29 43° 64° 1436 741 285 123 69
04-30 38° 49° 1458 752 286 123 69
05-01 36° 42° 1475 759 286 123 69
05-02 38° 44° 1494 768 286 123 69
05-03 39° 50° 1517 781 289 123 69
05-04 37° 64° 1546 800 298 124 69
05-05 47° 72° 1583 828 316 134 73
05-06 53° 68° 1621 856 334 144 78
05-07 55° 76° 1665 889 358 159 89
05-08 53° 61° 1700 915 373 167 91
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-09 46° 70° 1736 941 389 175 94
05-10 45° 77° 1775 970 408 186 100
05-11 48° 80° 1817 1002 430 200 109
05-12 56° 76° 1861 1036 454 216 120
05-13 64° 70° 1906 1071 479 233 132
05-14 56° 69° 1947 1102 500 246 140
05-15 46° 73° 1985 1129 517 255 145
05-16 44° 75° 2022 1157 535 265 149
05-17 45° 63° 2054 1179 547 269 149
05-18 41° 70° 2088 1202 561 274 150
05-19 52° 70° 2127 1232 580 286 156
05-20 45° 62° 2159 1253 591 289 156
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-21 44° 74° 2196 1280 609 298 160
05-22 46° 75° 2234 1309 627 309 166
05-23 52° 81° 2279 1343 652 325 177
05-24 52° 73° 2320 1374 672 338 185
05-25 44° 68° 2353 1398 686 344 186
05-26 40° 75° 2389 1423 702 351 188
05-27 44° 78° 2428 1452 720 362 194
05-28 49° 80° 2470 1485 743 377 204
05-29 52° 85° 2517 1522 770 396 218
05-30 60° 88° 2569 1564 802 420 237
05-31 68° 89° 2626 1610 838 448 260
06-01 65° 89° 2681 1655 873 475 282
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-02 60° 90° 2734 1698 907 500 302
06-03 62° 88° 2787 1742 940 526 323
06-04 58° 82° 2835 1780 968 546 338
06-05 51° 82° 2880 1814 992 562 349
06-06 57° 78° 2925 1850 1018 580 362
06-07 47° 74° 2964 1879 1037 591 368
06-08 46° 74° 3003 1907 1055 601 373
06-09 49° 75° 3043 1937 1075 613 380
06-10 50° 83° 3087 1971 1099 629 391
06-11 58° 67° 3127 2002 1120 642 399
06-12 51° 61° 3161 2026 1134 648 400
06-13 51° 64° 3197 2051 1149 655 402
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-14 55° 71° 3238 2082 1171 668 410
06-15 51° 78° 3280 2115 1193 683 420
06-16 55° 75° 3323 2148 1216 698 430
06-17 49° 79° 3365 2180 1238 712 439
06-18 52° 84° 3412 2216 1264 730 452
06-19 62° 86° 3464 2258 1296 754 471
06-20 64° 89° 3518 2303 1331 781 493
06-21 64° 89° 3573 2347 1365 807 514
06-22 63° 83° 3623 2388 1396 830 532
06-23 64° 79° 3673 2428 1426 852 549
06-24 63° 86° 3725 2470 1458 876 568
06-25 67° 83° 3778 2513 1491 901 588
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-26 62° 69° 3821 2546 1514 916 598
06-27 59° 71° 3865 2579 1537 931 608
06-28 50° 82° 3908 2613 1561 947 619
06-29 63° 87° 3962 2656 1595 972 639
06-30 70° 88° 4019 2703 1631 1001 663
07-01 67° 84° 4072 2746 1664 1026 683
07-02 69° 78° 4123 2788 1696 1050 702
07-03 66° 83° 4176 2830 1728 1074 721
07-04 62° 89° 4229 2873 1762 1099 741
07-05 69° 90° 4286 2921 1799 1129 766
07-06 67° 79° 4337 2962 1830 1152 784
07-07 58° 82° 4385 2999 1857 1171 798
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-08 63° 73° 4431 3035 1883 1189 811
07-09 54° 81° 4476 3071 1909 1207 824
07-10 57° 86° 4526 3110 1938 1228 840
07-11 66° 87° 4580 3154 1972 1254 861
07-12 62° 77° 4627 3192 2000 1274 876
07-13 62° 75° 4674 3229 2027 1293 890
07-14 60° 89° 4726 3271 2059 1317 909
07-15 66° 81° 4778 3313 2091 1341 928
07-16 64° 79° 4827 3352 2120 1362 944
07-17 61° 76° 4874 3388 2146 1380 957
07-18 56° 78° 4919 3423 2171 1397 969
07-19 57° 84° 4967 3462 2200 1418 985
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-20 63° 86° 5020 3504 2233 1442 1004
07-21 63° 81° 5070 3544 2262 1464 1021
07-22 58° 83° 5118 3583 2291 1485 1037
07-23 62° 77° 5166 3620 2318 1504 1051
07-24 58° 85° 5215 3659 2348 1525 1067
07-25 59° 87° 5266 3700 2378 1548 1085
07-26 67° 82° 5318 3743 2411 1573 1105
07-27 68° 87° 5374 3788 2446 1600 1127
07-28 72° 87° 5431 3836 2484 1630 1152
07-29 69° 82° 5484 3879 2517 1655 1172
07-30 62° 77° 5532 3917 2545 1675 1187
07-31 55° 77° 5576 3951 2569 1691 1198
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-01 56° 79° 5622 3986 2595 1708 1210
08-02 64° 81° 5672 4027 2625 1731 1228
08-03 61° 84° 5723 4067 2655 1753 1245
08-04 65° 83° 5775 4110 2688 1778 1265
08-05 65° 79° 5825 4150 2718 1800 1282
08-06 64° 70° 5870 4184 2743 1816 1293
08-07 63° 75° 5917 4221 2770 1835 1307
08-08 59° 80° 5964 4259 2797 1855 1322
08-09 62° 80° 6013 4298 2826 1876 1338
08-10 63° 78° 6061 4336 2854 1896 1353
08-11 60° 81° 6110 4374 2883 1916 1368
08-12 64° 78° 6159 4414 2912 1938 1385
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-13 62° 79° 6208 4452 2941 1958 1400
08-14 66° 78° 6258 4492 2970 1980 1417
08-15 62° 72° 6302 4527 2995 1997 1429
08-16 51° 78° 6345 4560 3018 2012 1439
08-17 61° 75° 6391 4596 3044 2030 1452
08-18 54° 73° 6432 4627 3065 2043 1460
08-19 50° 77° 6474 4659 3087 2057 1469
08-20 65° 87° 6529 4703 3121 2083 1490
08-21 68° 84° 6582 4747 3155 2109 1511
08-22 62° 78° 6631 4785 3183 2129 1526
08-23 65° 92° 6688 4832 3220 2158 1550
08-24 77° 93° 6751 4885 3263 2193 1580
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-25 71° 80° 6804 4928 3297 2218 1600
08-26 65° 77° 6853 4968 3326 2240 1617
08-27 53° 75° 6895 5000 3348 2254 1626
08-28 49° 77° 6936 5031 3369 2267 1634
08-29 55° 78° 6981 5065 3393 2283 1645
08-30 54° 73° 7022 5097 3415 2297 1654
08-31 46° 74° 7060 5125 3433 2307 1659
09-01 49° 79° 7103 5157 3455 2321 1668
09-02 56° 83° 7150 5195 3483 2341 1683
09-03 64° 89° 7205 5239 3518 2367 1704
09-04 70° 89° 7262 5287 3555 2397 1729
09-05 73° 91° 7322 5336 3595 2428 1755
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-06 68° 80° 7374 5378 3626 2452 1774
09-07 63° 74° 7420 5415 3653 2471 1788
09-08 59° 65° 7461 5445 3673 2483 1795
09-09 52° 73° 7501 5476 3694 2496 1803
09-10 50° 75° 7542 5506 3714 2508 1810
09-11 57° 66° 7581 5536 3734 2520 1817
09-12 55° 69° 7622 5566 3754 2532 1824
09-13 49° 66° 7657 5592 3770 2540 1827
09-14 45° 70° 7693 5617 3785 2547 1829
09-15 46° 72° 7730 5644 3802 2556 1833
09-16 50° 72° 7768 5673 3821 2567 1839
09-17 55° 71° 7809 5704 3842 2580 1847
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-18 49° 66° 7845 5730 3858 2588 1850
09-19 45° 65° 7878 5753 3871 2593 1850
09-20 59° 80° 7926 5790 3898 2612 1864
09-21 59° 80° 7973 5828 3926 2632 1879
09-22 60° 81° 8022 5866 3954 2652 1894
09-23 55° 75° 8065 5899 3977 2667 1904
09-24 50° 77° 8106 5931 3999 2681 1913
09-25 52° 68° 8144 5959 4017 2691 1918
09-26 62° 74° 8190 5995 4043 2709 1931
09-27 61° 66° 8232 6026 4065 2722 1939
09-28 60° 64° 8272 6056 4084 2734 1946
09-29 56° 69° 8312 6087 4105 2747 1954
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-30 54° 77° 8356 6120 4128 2762 1964

 

Latest Updates

March 18th, 2024Timing crabgrass preemergence applications in spring

Don't miss this update from from Kevin Frank regarding timing of crabgrass preemergence herbicides.


 

February 12th, 2024Welcome to the 2024 GDD Tracking Season

2024 might be the year that if you blinked you missed winter. We've already experienced some very unseasonably warm weather in February with temperatures in the 60's. Temperatures are remaining relatively mild but I wouldn't be surprised if winter resurfaced yet as we move through the rest of February and March. GDDTracker starts counting on February 15. Spring is typically the time of year when GDDTracker receives the most attention for alerting turfgrass managers of optimal application timing windows for suppressing annual bluegrass seedheads and crabgrass preemergence applications. However, there are many models you may find helpful throughout the season including the early season DMI timer and 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 fantastic 2024!
 

 

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