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MSU Annual Bluegrass Seedhead Embark Timer (GDD 22)
forecast for Wed, Dec. 17. 2025

 
  

Kincheloe, MI

        

Generously Supported By:



Tabular Data

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

2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-15 18° 25° 0 0 0 0 0
02-16 6° 23° 0 0 0 0 0
02-17 -15° 9° 0 0 0 0 0
02-18 -0° 18° 0 0 0 0 0
02-19 -1° 10° 0 0 0 0 0
02-20 6° 18° 0 0 0 0 0
02-21 -3° 26° 0 0 0 0 0
02-22 19° 26° 1 0 0 0 0
02-23 20° 33° 5 0 0 0 0
02-24 31° 47° 22 7 0 0 0
02-25 31° 38° 34 9 0 0 0
02-26 18° 42° 42 9 0 0 0
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 23° 37° 50 9 0 0 0
02-28 10° 29° 50 9 0 0 0
02-29 n/a n/a n/a n/a n/a n/a n/a
03-01 -4° 15° 50 9 0 0 0
03-02 2° 25° 50 9 0 0 0
03-03 16° 39° 55 9 0 0 0
03-04 23° 38° 64 9 0 0 0
03-05 19° 37° 70 9 0 0 0
03-06 11° 28° 70 9 0 0 0
03-07 15° 31° 71 9 0 0 0
03-08 6° 31° 71 9 0 0 0
03-09 20° 45° 81 10 0 0 0
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-10 20° 47° 92 11 0 0 0
03-11 18° 46° 103 12 0 0 0
03-12 14° 35° 106 12 0 0 0
03-13 19° 45° 116 12 0 0 0
03-14 26° 45° 129 15 0 0 0
03-15 37° 55° 153 29 4 0 0
03-16 25° 42° 165 31 4 0 0
03-17 11° 34° 165 31 4 0 0
03-18 29° 44° 180 35 4 0 0
03-19 32° 40° 194 39 4 0 0
03-20 17° 33° 197 39 4 0 0
03-21 13° 44° 203 39 4 0 0
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-22 13° 31° 203 39 4 0 0
03-23 -1° 32° 203 39 4 0 0
03-24 26° 32° 210 39 4 0 0
03-25 24° 30° 216 39 4 0 0
03-26 5° 37° 216 39 4 0 0
03-27 19° 42° 224 39 4 0 0
03-28 22° 31° 229 39 4 0 0
03-29 26° 35° 238 39 4 0 0
03-30 28° 32° 245 39 4 0 0
03-31 22° 29° 249 39 4 0 0
04-01 5° 33° 249 39 4 0 0
04-02 23° 32° 254 39 4 0 0
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-03 32° 42° 270 44 4 0 0
04-04 30° 48° 286 51 4 0 0
04-05 28° 41° 299 54 4 0 0
04-06 20° 39° 306 54 4 0 0
04-07 21° 31° 310 54 4 0 0
04-08 8° 27° 310 54 4 0 0
04-09 1° 38° 310 54 4 0 0
04-10 22° 44° 321 55 4 0 0
04-11 17° 48° 332 55 4 0 0
04-12 15° 53° 344 57 4 0 0
04-13 34° 58° 368 72 9 0 0
04-14 39° 56° 393 87 14 0 0
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-15 31° 37° 406 89 14 0 0
04-16 24° 41° 416 90 14 0 0
04-17 16° 49° 427 90 14 0 0
04-18 39° 62° 455 109 23 1 0
04-19 33° 41° 470 114 23 1 0
04-20 30° 49° 488 121 23 1 0
04-21 37° 47° 508 131 23 1 0
04-22 36° 51° 530 143 25 1 0
04-23 36° 59° 555 159 30 1 0
04-24 41° 49° 578 172 33 1 0
04-25 41° 53° 603 186 38 1 0
04-26 39° 53° 627 200 42 1 0
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-27 33° 63° 653 216 48 1 0
04-28 46° 69° 688 242 63 8 3
04-29 32° 62° 713 257 68 8 3
04-30 31° 47° 730 264 68 8 3
05-01 32° 44° 746 270 68 8 3
05-02 37° 45° 766 280 68 8 3
05-03 34° 53° 787 291 70 8 3
05-04 31° 67° 814 308 76 8 3
05-05 41° 76° 851 334 93 17 6
05-06 51° 72° 891 364 113 29 13
05-07 44° 63° 922 386 125 32 13
05-08 28° 56° 942 396 125 32 13
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-09 25° 69° 967 411 130 32 13
05-10 39° 57° 994 427 136 32 13
05-11 30° 61° 1017 441 140 32 13
05-12 41° 83° 1057 470 159 44 20
05-13 49° 82° 1101 504 183 60 31
05-14 60° 66° 1142 535 204 73 39
05-15 57° 76° 1186 570 229 90 51
05-16 59° 82° 1235 609 258 111 66
05-17 47° 63° 1269 632 271 116 67
05-18 42° 53° 1294 647 276 116 67
05-19 36° 56° 1318 662 280 116 67
05-20 35° 61° 1344 678 287 116 67
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-21 42° 64° 1375 698 297 119 67
05-22 45° 55° 1403 716 305 119 67
05-23 42° 51° 1427 731 310 119 67
05-24 41° 57° 1454 748 317 119 67
05-25 41° 60° 1482 766 325 119 67
05-26 40° 72° 1516 790 339 125 68
05-27 40° 73° 1551 815 354 132 69
05-28 44° 79° 1590 844 373 143 76
05-29 50° 72° 1629 873 392 154 82
05-30 47° 65° 1663 897 405 160 82
05-31 39° 56° 1689 912 411 160 82
06-01 40° 63° 1718 932 421 161 82
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-02 34° 76° 1751 955 434 166 82
06-03 52° 86° 1799 992 461 186 97
06-04 50° 74° 1839 1023 482 198 104
06-05 43° 80° 1879 1052 501 210 111
06-06 49° 71° 1917 1080 519 220 116
06-07 47° 73° 1955 1108 537 230 121
06-08 49° 74° 1995 1138 557 242 128
06-09 55° 71° 2036 1169 578 255 136
06-10 51° 62° 2070 1194 593 261 137
06-11 47° 74° 2109 1223 612 272 143
06-12 46° 60° 2140 1244 623 275 143
06-13 44° 59° 2170 1263 632 277 143
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-14 44° 65° 2203 1286 645 282 143
06-15 54° 77° 2246 1320 669 297 154
06-16 54° 81° 2291 1355 694 314 166
06-17 59° 77° 2337 1391 719 332 179
06-18 54° 79° 2381 1425 744 348 190
06-19 53° 70° 2421 1454 763 360 196
06-20 49° 76° 2461 1485 784 372 204
06-21 58° 75° 2506 1519 808 389 215
06-22 65° 89° 2561 1564 843 416 237
06-23 71° 87° 2618 1611 880 445 261
06-24 57° 74° 2662 1645 904 461 272
06-25 50° 75° 2703 1676 925 474 280
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-26 59° 68° 2744 1707 946 487 288
06-27 58° 71° 2786 1740 969 501 298
06-28 55° 73° 2828 1772 991 515 307
06-29 53° 82° 2874 1808 1016 533 320
06-30 67° 83° 2927 1850 1049 558 339
07-01 61° 78° 2975 1888 1077 578 354
07-02 59° 80° 3022 1926 1105 597 369
07-03 53° 73° 3063 1957 1126 610 377
07-04 46° 78° 3104 1987 1146 623 384
07-05 63° 86° 3156 2030 1179 647 404
07-06 61° 73° 3201 2065 1204 664 416
07-07 56° 73° 3243 2097 1226 678 425
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-08 51° 78° 3286 2130 1249 693 435
07-09 60° 77° 3333 2166 1275 712 448
07-10 55° 80° 3378 2202 1301 729 461
07-11 55° 81° 3425 2238 1327 748 474
07-12 67° 77° 3474 2278 1357 769 491
07-13 65° 80° 3525 2318 1387 792 508
07-14 60° 83° 3575 2358 1417 814 525
07-15 58° 86° 3625 2398 1447 836 542
07-16 62° 79° 3673 2437 1476 856 558
07-17 54° 67° 3712 2466 1495 867 564
07-18 45° 75° 3750 2494 1513 877 569
07-19 60° 71° 3793 2527 1536 892 579
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-20 55° 73° 3835 2559 1558 906 588
07-21 47° 74° 3874 2587 1576 917 593
07-22 51° 77° 3916 2619 1598 931 602
07-23 62° 85° 3967 2661 1630 954 621
07-24 64° 76° 4015 2699 1658 974 636
07-25 58° 82° 4064 2737 1686 995 651
07-26 57° 84° 4113 2776 1715 1016 667
07-27 66° 88° 4168 2821 1750 1043 689
07-28 62° 79° 4216 2860 1779 1063 705
07-29 59° 83° 4265 2899 1808 1084 721
07-30 59° 74° 4309 2933 1832 1100 732
07-31 50° 72° 4348 2962 1851 1111 738
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-01 50° 76° 4389 2993 1872 1124 746
08-02 55° 79° 4434 3028 1897 1141 758
08-03 55° 80° 4480 3063 1922 1159 770
08-04 51° 82° 4524 3098 1947 1175 782
08-05 58° 81° 4572 3136 1974 1195 797
08-06 55° 84° 4620 3173 2002 1215 811
08-07 67° 86° 4674 3218 2037 1241 833
08-08 69° 86° 4730 3264 2072 1269 856
08-09 71° 89° 4788 3312 2110 1299 881
08-10 69° 83° 4842 3356 2145 1325 902
08-11 70° 80° 4895 3399 2178 1350 922
08-12 65° 78° 4945 3438 2207 1372 938
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-13 60° 76° 4990 3474 2233 1389 951
08-14 53° 77° 5033 3507 2256 1404 961
08-15 61° 84° 5084 3547 2286 1427 978
08-16 64° 79° 5134 3587 2316 1449 995
08-17 56° 71° 5175 3619 2338 1462 1004
08-18 52° 66° 5213 3646 2355 1472 1008
08-19 56° 65° 5251 3675 2374 1482 1014
08-20 58° 75° 5296 3709 2398 1499 1025
08-21 63° 79° 5344 3748 2427 1519 1041
08-22 58° 77° 5390 3784 2453 1537 1054
08-23 59° 72° 5433 3817 2476 1552 1064
08-24 53° 65° 5470 3844 2493 1561 1068
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-25 53° 64° 5507 3871 2509 1570 1072
08-26 45° 63° 5539 3893 2522 1574 1072
08-27 39° 66° 5570 3913 2532 1577 1072
08-28 47° 60° 5601 3935 2544 1580 1072
08-29 40° 64° 5631 3955 2553 1582 1072
08-30 39° 71° 5664 3977 2566 1587 1072
08-31 48° 78° 5705 4008 2587 1600 1079
09-01 52° 78° 5748 4042 2610 1615 1090
09-02 55° 77° 5792 4075 2634 1631 1100
09-03 46° 65° 5825 4099 2647 1636 1101
09-04 39° 56° 5850 4114 2653 1636 1101
09-05 47° 55° 5879 4133 2662 1637 1101
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-06 45° 54° 5907 4150 2669 1637 1101
09-07 44° 57° 5935 4168 2677 1637 1101
09-08 36° 64° 5963 4187 2686 1637 1101
09-09 51° 70° 6002 4215 2704 1648 1106
09-10 52° 69° 6040 4244 2723 1659 1112
09-11 53° 69° 6079 4273 2742 1670 1118
09-12 51° 70° 6118 4301 2760 1680 1123
09-13 58° 78° 6164 4338 2786 1698 1137
09-14 58° 76° 6209 4373 2812 1716 1149
09-15 55° 76° 6253 4406 2835 1731 1159
09-16 51° 79° 6295 4439 2858 1746 1169
09-17 54° 82° 6342 4475 2884 1764 1182
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-18 57° 71° 6384 4507 2906 1778 1191
09-19 51° 68° 6421 4535 2924 1788 1196
09-20 47° 64° 6455 4559 2938 1794 1197
09-21 53° 63° 6491 4585 2954 1802 1200
09-22 58° 67° 6532 4616 2975 1815 1208
09-23 61° 67° 6574 4648 2997 1829 1217
09-24 59° 70° 6617 4680 3019 1843 1226
09-25 58° 67° 6657 4711 3040 1856 1234
09-26 47° 65° 6692 4735 3054 1862 1235
09-27 43° 72° 6727 4760 3069 1869 1237
09-28 45° 75° 6765 4788 3087 1879 1242
09-29 44° 77° 6803 4817 3106 1890 1248
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-30 47° 72° 6841 4844 3123 1899 1252
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-15 21° 32° 5 0 0 0 0
02-16 11° 23° 5 0 0 0 0
02-17 -8° 24° 5 0 0 0 0
02-18 12° 26° 5 0 0 0 0
02-19 8° 29° 5 0 0 0 0
02-20 2° 33° 5 0 0 0 0
02-21 27° 44° 18 4 0 0 0
02-22 25° 42° 30 5 0 0 0
02-23 4° 36° 30 5 0 0 0
02-24 -0° 26° 30 5 0 0 0
02-25 27° 38° 40 6 0 0 0
02-26 18° 38° 46 6 0 0 0
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 31° 55° 67 16 1 0 0
02-28 9° 42° 71 16 1 0 0
02-29 -0° 19° 71 16 1 0 0
03-01 14° 46° 79 16 1 0 0
03-02 27° 50° 95 23 1 0 0
03-03 34° 43° 112 30 1 0 0
03-04 39° 59° 139 47 8 0 0
03-05 30° 44° 154 52 8 0 0
03-06 28° 49° 171 59 8 0 0
03-07 26° 47° 185 63 8 0 0
03-08 30° 50° 203 71 8 0 0
03-09 25° 35° 212 71 8 0 0
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-10 21° 34° 217 71 8 0 0
03-11 27° 52° 235 79 8 0 0
03-12 24° 55° 253 86 8 0 0
03-13 26° 58° 273 96 8 0 0
03-14 29° 47° 289 102 8 0 0
03-15 26° 46° 302 106 8 0 0
03-16 33° 48° 321 115 8 0 0
03-17 26° 34° 329 115 8 0 0
03-18 21° 27° 331 115 8 0 0
03-19 21° 34° 336 115 8 0 0
03-20 16° 23° 336 115 8 0 0
03-21 8° 23° 336 115 8 0 0
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-22 8° 29° 336 115 8 0 0
03-23 10° 26° 336 115 8 0 0
03-24 1° 33° 336 115 8 0 0
03-25 27° 41° 348 117 8 0 0
03-26 37° 55° 372 131 12 0 0
03-27 28° 42° 385 134 12 0 0
03-28 24° 33° 392 134 12 0 0
03-29 26° 35° 400 134 12 0 0
03-30 22° 37° 408 134 12 0 0
03-31 29° 42° 421 137 12 0 0
04-01 26° 47° 436 142 12 0 0
04-02 27° 51° 452 149 12 0 0
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-03 34° 43° 469 155 12 0 0
04-04 33° 45° 486 162 12 0 0
04-05 29° 49° 503 169 12 0 0
04-06 28° 52° 520 177 12 0 0
04-07 22° 57° 538 184 12 0 0
04-08 41° 57° 565 201 19 0 0
04-09 35° 63° 592 218 26 0 0
04-10 37° 66° 621 237 35 1 0
04-11 39° 59° 648 254 42 1 0
04-12 39° 48° 669 266 43 1 0
04-13 35° 53° 691 278 46 1 0
04-14 38° 55° 716 292 50 1 0
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-15 31° 54° 736 303 51 1 0
04-16 30° 57° 758 314 52 1 0
04-17 39° 46° 778 324 52 1 0
04-18 42° 51° 803 339 57 1 0
04-19 37° 45° 822 348 57 1 0
04-20 32° 39° 835 352 57 1 0
04-21 31° 46° 852 358 57 1 0
04-22 21° 63° 872 368 57 1 0
04-23 35° 63° 899 385 64 1 0
04-24 24° 41° 909 385 64 1 0
04-25 20° 51° 923 389 64 1 0
04-26 26° 57° 942 399 64 1 0
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-27 45° 68° 977 423 78 8 1
04-28 42° 55° 1003 439 85 8 1
04-29 38° 43° 1022 448 85 8 1
04-30 42° 53° 1047 463 90 8 1
05-01 38° 57° 1073 479 95 8 1
05-02 41° 60° 1101 498 104 8 1
05-03 49° 65° 1136 523 119 15 3
05-04 44° 68° 1170 547 133 22 5
05-05 44° 60° 1200 567 143 24 5
05-06 34° 72° 1231 588 154 26 5
05-07 41° 68° 1264 610 167 31 5
05-08 49° 64° 1298 634 181 37 6
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-09 47° 64° 1331 657 194 42 6
05-10 44° 66° 1364 680 207 47 6
05-11 44° 61° 1395 701 217 50 6
05-12 35° 57° 1419 715 222 50 6
05-13 39° 63° 1448 734 231 51 6
05-14 36° 58° 1473 749 235 51 6
05-15 35° 67° 1501 768 244 52 6
05-16 37° 70° 1533 789 256 55 6
05-17 53° 74° 1575 821 277 69 15
05-18 50° 77° 1616 852 299 83 23
05-19 55° 73° 1659 885 321 97 33
05-20 52° 70° 1698 914 341 108 39
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-21 50° 80° 1741 947 363 123 49
05-22 53° 67° 1778 975 381 133 53
05-23 47° 64° 1812 998 395 138 54
05-24 39° 73° 1846 1022 409 144 55
05-25 51° 65° 1882 1048 425 153 58
05-26 50° 73° 1922 1078 444 164 65
05-27 52° 65° 1958 1104 461 173 68
05-28 48° 68° 1994 1130 477 181 71
05-29 42° 60° 2024 1150 486 182 71
05-30 36° 73° 2056 1172 499 187 71
05-31 37° 75° 2090 1196 513 193 72
06-01 48° 78° 2131 1228 534 206 80
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-02 58° 78° 2177 1264 560 224 93
06-03 50° 75° 2218 1294 581 236 101
06-04 60° 78° 2265 1331 607 255 115
06-05 60° 75° 2310 1366 633 272 127
06-06 55° 69° 2350 1396 653 284 134
06-07 52° 57° 2383 1419 665 289 134
06-08 45° 67° 2417 1443 679 295 135
06-09 50° 56° 2448 1464 691 298 135
06-10 45° 59° 2478 1484 700 300 135
06-11 38° 72° 2510 1507 713 305 135
06-12 53° 81° 2555 1541 738 321 147
06-13 54° 78° 2599 1575 762 337 158
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-14 49° 69° 2636 1602 778 346 161
06-15 43° 69° 2670 1626 792 352 162
06-16 54° 74° 2711 1657 814 365 171
06-17 58° 82° 2759 1695 842 385 186
06-18 66° 92° 2816 1743 879 415 210
06-19 66° 84° 2869 1786 912 440 230
06-20 57° 77° 2914 1820 937 456 242
06-21 60° 72° 2958 1854 961 472 253
06-22 56° 66° 2997 1883 979 483 258
06-23 58° 73° 3040 1916 1003 499 269
06-24 55° 81° 3086 1953 1029 517 282
06-25 62° 82° 3136 1993 1059 539 299
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-26 52° 66° 3174 2020 1076 548 303
06-27 48° 70° 3210 2047 1093 557 307
06-28 49° 66° 3246 2072 1109 564 310
06-29 54° 80° 3291 2107 1134 581 322
06-30 50° 68° 3324 2130 1147 586 322
07-01 49° 78° 3365 2162 1168 600 330
07-02 55° 71° 3406 2193 1189 613 338
07-03 61° 77° 3454 2230 1216 632 352
07-04 60° 78° 3500 2267 1243 651 366
07-05 57° 70° 3542 2298 1265 664 375
07-06 58° 77° 3587 2334 1290 682 387
07-07 55° 81° 3633 2369 1316 699 400
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-08 64° 82° 3684 2410 1347 722 418
07-09 65° 82° 3735 2452 1378 746 436
07-10 62° 81° 3785 2491 1408 767 453
07-11 58° 81° 3833 2529 1436 787 468
07-12 56° 83° 3880 2567 1463 807 482
07-13 61° 88° 3933 2609 1495 831 501
07-14 65° 82° 3984 2650 1527 855 520
07-15 67° 86° 4038 2695 1561 881 541
07-16 64° 77° 4087 2733 1590 901 557
07-17 57° 70° 4129 2765 1612 915 566
07-18 51° 73° 4168 2795 1631 927 572
07-19 48° 80° 4211 2827 1654 941 582
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-20 61° 81° 4260 2866 1683 962 598
07-21 55° 78° 4304 2900 1707 979 609
07-22 47° 83° 4347 2933 1730 993 619
07-23 61° 67° 4389 2965 1752 1007 628
07-24 60° 72° 4433 2999 1776 1023 639
07-25 56° 75° 4476 3033 1799 1039 649
07-26 49° 80° 4519 3065 1822 1053 659
07-27 54° 81° 4565 3101 1848 1071 672
07-28 59° 84° 4615 3141 1877 1093 688
07-29 69° 86° 4670 3186 1913 1120 711
07-30 72° 85° 4726 3232 1949 1148 734
07-31 66° 87° 4781 3277 1984 1175 756
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-01 58° 88° 4832 3318 2014 1198 773
08-02 68° 89° 4888 3364 2051 1226 797
08-03 66° 86° 4942 3408 2085 1252 818
08-04 67° 81° 4994 3450 2117 1276 837
08-05 56° 76° 5039 3485 2141 1293 848
08-06 55° 77° 5083 3519 2166 1309 860
08-07 50° 80° 5126 3552 2189 1324 870
08-08 61° 79° 5174 3590 2217 1344 885
08-09 55° 70° 5214 3620 2237 1356 892
08-10 53° 65° 5251 3647 2254 1365 896
08-11 53° 66° 5289 3675 2272 1375 901
08-12 56° 79° 5334 3711 2297 1393 913
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-13 50° 84° 5380 3746 2323 1410 926
08-14 53° 87° 5428 3784 2350 1430 940
08-15 56° 85° 5476 3822 2379 1451 956
08-16 64° 70° 5522 3858 2404 1468 968
08-17 67° 77° 5572 3898 2434 1490 985
08-18 62° 75° 5618 3934 2461 1509 999
08-19 50° 67° 5655 3961 2478 1517 1003
08-20 42° 68° 5688 3984 2491 1523 1003
08-21 44° 75° 5726 4012 2509 1532 1008
08-22 51° 80° 5769 4046 2532 1548 1018
08-23 54° 78° 5814 4080 2556 1564 1029
08-24 61° 82° 5864 4120 2586 1586 1046
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-25 57° 86° 5913 4159 2616 1607 1063
08-26 66° 90° 5969 4205 2652 1635 1086
08-27 65° 84° 6022 4248 2684 1660 1105
08-28 56° 64° 6060 4276 2703 1670 1111
08-29 58° 72° 6102 4309 2725 1685 1120
08-30 57° 75° 6147 4343 2749 1701 1131
08-31 53° 82° 6192 4378 2775 1718 1144
09-01 56° 70° 6233 4409 2796 1731 1152
09-02 39° 71° 6266 4432 2809 1737 1152
09-03 46° 77° 6306 4462 2829 1748 1159
09-04 52° 77° 6348 4495 2851 1763 1168
09-05 50° 77° 6390 4527 2873 1777 1177
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-06 49° 58° 6422 4548 2885 1780 1177
09-07 42° 56° 6449 4565 2892 1780 1177
09-08 48° 70° 6486 4592 2909 1789 1181
09-09 51° 71° 6525 4621 2928 1800 1187
09-10 46° 78° 6565 4651 2948 1812 1194
09-11 58° 77° 6610 4686 2973 1830 1206
09-12 54° 85° 6658 4724 3001 1849 1221
09-13 52° 83° 6703 4760 3026 1867 1233
09-14 54° 81° 6749 4795 3052 1884 1246
09-15 57° 83° 6797 4833 3080 1904 1261
09-16 57° 86° 6846 4872 3109 1926 1277
09-17 52° 84° 6892 4908 3135 1944 1290
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-18 54° 81° 6938 4944 3161 1961 1303
09-19 57° 83° 6986 4982 3188 1981 1318
09-20 58° 76° 7030 5017 3213 1998 1329
09-21 61° 81° 7079 5055 3242 2018 1345
09-22 56° 68° 7119 5085 3262 2030 1352
09-23 45° 65° 7152 5108 3275 2035 1352
09-24 44° 61° 7182 5128 3285 2038 1352
09-25 57° 69° 7223 5159 3306 2050 1360
09-26 45° 79° 7263 5190 3326 2063 1367
09-27 48° 80° 7306 5222 3348 2077 1376
09-28 48° 80° 7348 5254 3371 2091 1386
09-29 53° 79° 7392 5289 3395 2108 1397
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-30 44° 74° 7430 5316 3412 2117 1401

 

Latest Updates

February 15th, 2025Welcome to the 2025 GDD Tracking Season

Although winter seems very much entrenched in the Great Lakes region with snow and frigid temperatures in the forecast, GDDTracker starts 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. Beyond the spring models, 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 2025!
 

March 18th, 2024Timing crabgrass preemergence applications in spring

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


 

 

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