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MSU Poa Seedhead Flush (GDD 22)
through Sat, Dec. 13. 2025

 
  

Lapeer, 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 20° 29° 3 0 0 0 0
02-16 20° 28° 5 0 0 0 0
02-17 0° 19° 5 0 0 0 0
02-18 -4° 15° 5 0 0 0 0
02-19 5° 16° 5 0 0 0 0
02-20 13° 21° 5 0 0 0 0
02-21 19° 29° 6 0 0 0 0
02-22 19° 29° 8 0 0 0 0
02-23 23° 34° 15 0 0 0 0
02-24 26° 46° 29 4 0 0 0
02-25 38° 51° 51 16 2 0 0
02-26 27° 41° 63 18 2 0 0
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 34° 39° 78 23 2 0 0
02-28 29° 51° 96 31 2 0 0
02-29 n/a n/a n/a n/a n/a n/a n/a
03-01 17° 34° 99 31 2 0 0
03-02 18° 27° 100 31 2 0 0
03-03 19° 39° 107 31 2 0 0
03-04 34° 47° 126 39 2 0 0
03-05 36° 55° 149 53 6 0 0
03-06 22° 33° 155 53 6 0 0
03-07 29° 39° 167 55 6 0 0
03-08 19° 36° 172 55 6 0 0
03-09 30° 55° 193 65 6 0 0
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-10 33° 64° 219 82 13 0 0
03-11 32° 53° 240 92 13 0 0
03-12 26° 45° 253 96 13 0 0
03-13 25° 58° 273 105 13 0 0
03-14 35° 71° 304 126 24 3 0
03-15 55° 73° 346 159 47 18 10
03-16 29° 58° 368 171 48 18 10
03-17 27° 47° 383 175 48 18 10
03-18 38° 64° 412 194 58 19 10
03-19 58° 71° 454 227 80 33 19
03-20 30° 59° 477 239 83 33 19
03-21 27° 54° 495 248 83 33 19
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-22 24° 49° 510 252 83 33 19
03-23 20° 40° 517 252 83 33 19
03-24 34° 39° 532 257 83 33 19
03-25 30° 39° 545 259 83 33 19
03-26 25° 42° 556 261 83 33 19
03-27 23° 56° 574 268 83 33 19
03-28 37° 57° 599 283 88 33 19
03-29 43° 59° 627 302 97 34 19
03-30 43° 64° 659 323 108 37 19
03-31 32° 55° 680 334 109 37 19
04-01 26° 41° 691 336 109 37 19
04-02 32° 49° 710 344 109 37 19
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-03 42° 61° 739 364 119 39 19
04-04 33° 49° 758 373 119 39 19
04-05 39° 51° 781 386 121 39 19
04-06 31° 43° 796 391 121 39 19
04-07 25° 41° 807 392 121 39 19
04-08 23° 36° 815 392 121 39 19
04-09 23° 44° 826 393 121 39 19
04-10 31° 38° 839 396 121 39 19
04-11 30° 50° 857 404 121 39 19
04-12 26° 55° 875 412 121 39 19
04-13 39° 59° 902 429 128 39 19
04-14 45° 71° 938 455 145 47 22
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-15 38° 51° 961 468 147 47 22
04-16 34° 52° 982 479 148 47 22
04-17 26° 63° 1004 491 151 47 22
04-18 52° 75° 1046 523 172 60 31
04-19 46° 66° 1080 547 186 67 32
04-20 33° 55° 1101 558 188 67 32
04-21 46° 70° 1137 584 203 74 34
04-22 41° 62° 1167 604 213 76 34
04-23 47° 69° 1203 630 229 84 37
04-24 49° 80° 1245 662 252 98 46
04-25 49° 73° 1284 691 271 109 53
04-26 42° 52° 1309 706 276 109 53
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-27 34° 64° 1337 724 283 109 53
04-28 46° 73° 1374 751 301 119 57
04-29 47° 82° 1417 784 323 134 67
04-30 34° 58° 1441 798 328 134 67
05-01 44° 65° 1474 821 340 139 67
05-02 50° 62° 1508 845 354 145 68
05-03 42° 51° 1533 860 359 145 68
05-04 36° 58° 1558 875 364 145 68
05-05 47° 62° 1590 897 377 149 68
05-06 52° 61° 1624 921 391 155 69
05-07 46° 68° 1660 947 406 163 72
05-08 37° 49° 1681 958 407 163 72
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-09 32° 62° 1706 973 412 163 72
05-10 46° 72° 1743 1000 429 172 76
05-11 41° 67° 1775 1022 441 176 76
05-12 44° 79° 1815 1052 461 187 82
05-13 61° 70° 1858 1085 485 203 93
05-14 62° 74° 1904 1121 510 221 106
05-15 58° 80° 1951 1158 537 240 120
05-16 61° 82° 2001 1198 567 261 136
05-17 56° 70° 2041 1228 588 274 144
05-18 51° 58° 2074 1251 600 279 144
05-19 42° 55° 2100 1267 607 279 144
05-20 36° 55° 2124 1281 610 279 144
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-21 47° 51° 2151 1298 617 279 144
05-22 47° 52° 2178 1315 624 279 144
05-23 39° 54° 2202 1329 629 279 144
05-24 42° 60° 2231 1348 638 280 144
05-25 39° 64° 2261 1368 647 281 144
05-26 40° 70° 2294 1391 660 286 144
05-27 48° 72° 2332 1419 679 297 150
05-28 51° 61° 2366 1443 692 302 150
05-29 56° 65° 2404 1471 711 313 156
05-30 53° 74° 2446 1503 732 326 164
05-31 46° 64° 2479 1526 745 331 164
06-01 39° 67° 2510 1547 757 335 164
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-02 41° 78° 2548 1575 774 344 169
06-03 56° 85° 2596 1613 803 365 184
06-04 61° 80° 2645 1652 831 385 200
06-05 57° 72° 2687 1684 854 400 209
06-06 53° 75° 2729 1716 876 414 218
06-07 52° 76° 2771 1748 898 428 227
06-08 57° 75° 2815 1782 922 444 238
06-09 58° 76° 2861 1818 947 461 251
06-10 53° 70° 2900 1847 967 473 257
06-11 51° 86° 2947 1884 993 491 271
06-12 59° 72° 2990 1917 1016 506 281
06-13 54° 67° 3028 1945 1035 517 286
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-14 53° 76° 3071 1978 1057 531 296
06-15 55° 79° 3115 2012 1082 548 307
06-16 55° 82° 3162 2049 1109 566 321
06-17 62° 88° 3215 2092 1141 591 341
06-18 67° 75° 3264 2131 1171 613 357
06-19 60° 72° 3308 2165 1194 628 368
06-20 58° 75° 3353 2200 1219 645 380
06-21 66° 88° 3408 2245 1254 672 402
06-22 78° 91° 3470 2297 1297 707 431
06-23 77° 91° 3533 2350 1339 741 461
06-24 73° 89° 3591 2398 1378 772 486
06-25 65° 77° 3641 2438 1407 793 503
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-26 66° 85° 3694 2481 1440 818 523
06-27 70° 89° 3751 2528 1478 848 547
06-28 66° 75° 3800 2567 1506 868 563
06-29 60° 84° 3850 2607 1536 890 580
06-30 70° 81° 3903 2650 1569 915 600
07-01 69° 81° 3956 2693 1602 940 620
07-02 62° 84° 4007 2734 1633 963 638
07-03 64° 80° 4057 2774 1663 985 655
07-04 58° 85° 4107 2814 1693 1007 672
07-05 71° 90° 4165 2862 1731 1037 697
07-06 73° 89° 4224 2911 1771 1069 723
07-07 61° 73° 4270 2947 1796 1086 736
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-08 57° 81° 4317 2984 1823 1105 750
07-09 68° 80° 4369 3026 1855 1129 769
07-10 64° 82° 4420 3067 1886 1152 787
07-11 65° 80° 4470 3107 1917 1175 804
07-12 71° 85° 4527 3154 1953 1203 828
07-13 69° 84° 4581 3198 1988 1230 849
07-14 62° 83° 4632 3239 2018 1252 867
07-15 64° 86° 4685 3282 2051 1277 887
07-16 69° 83° 4739 3326 2085 1303 908
07-17 60° 75° 4785 3362 2111 1321 921
07-18 52° 74° 4826 3393 2132 1334 929
07-19 59° 79° 4873 3430 2159 1353 943
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-20 64° 77° 4922 3469 2188 1374 959
07-21 57° 74° 4965 3502 2212 1389 969
07-22 51° 79° 5008 3535 2235 1404 979
07-23 58° 87° 5059 3576 2265 1427 997
07-24 73° 94° 5121 3628 2307 1461 1026
07-25 71° 82° 5175 3672 2342 1487 1047
07-26 68° 82° 5228 3715 2375 1513 1067
07-27 71° 89° 5287 3764 2413 1543 1093
07-28 69° 89° 5344 3811 2450 1572 1117
07-29 66° 87° 5398 3855 2485 1599 1138
07-30 63° 82° 5449 3896 2516 1622 1156
07-31 62° 76° 5496 3933 2543 1640 1170
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-01 54° 75° 5539 3966 2565 1655 1180
08-02 51° 77° 5581 3998 2587 1669 1189
08-03 56° 80° 5627 4034 2613 1687 1202
08-04 57° 80° 5673 4070 2640 1706 1215
08-05 59° 82° 5722 4109 2668 1726 1231
08-06 63° 85° 5774 4151 2700 1750 1250
08-07 63° 85° 5825 4192 2732 1774 1268
08-08 65° 88° 5880 4237 2766 1800 1290
08-09 72° 90° 5939 4286 2806 1831 1316
08-10 71° 91° 5998 4335 2845 1863 1342
08-11 71° 90° 6057 4384 2884 1893 1368
08-12 68° 86° 6112 4429 2918 1920 1390
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-13 67° 81° 6164 4471 2951 1945 1409
08-14 63° 81° 6214 4511 2980 1966 1426
08-15 63° 84° 6266 4553 3012 1990 1445
08-16 66° 88° 6321 4598 3047 2017 1467
08-17 60° 75° 6366 4633 3073 2035 1479
08-18 53° 78° 6410 4667 3096 2050 1490
08-19 62° 71° 6454 4701 3120 2066 1501
08-20 63° 70° 6499 4736 3145 2083 1513
08-21 61° 75° 6545 4772 3172 2102 1526
08-22 53° 80° 6590 4807 3196 2118 1538
08-23 64° 79° 6639 4846 3226 2140 1554
08-24 54° 74° 6681 4878 3248 2154 1563
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-25 52° 67° 6719 4906 3266 2164 1568
08-26 47° 67° 6755 4932 3281 2171 1571
08-27 45° 73° 6792 4959 3298 2180 1575
08-28 55° 67° 6830 4987 3317 2191 1580
08-29 48° 64° 6865 5012 3331 2197 1582
08-30 44° 70° 6900 5037 3346 2204 1584
08-31 47° 74° 6938 5065 3364 2214 1589
09-01 48° 76° 6978 5095 3384 2226 1596
09-02 50° 78° 7019 5126 3406 2240 1604
09-03 53° 78° 7063 5160 3430 2256 1615
09-04 50° 64° 7098 5185 3445 2263 1617
09-05 47° 68° 7134 5211 3461 2270 1620
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-06 48° 61° 7166 5233 3473 2275 1620
09-07 41° 66° 7198 5255 3484 2278 1620
09-08 39° 67° 7229 5276 3496 2282 1620
09-09 43° 75° 7266 5303 3513 2291 1624
09-10 50° 77° 7308 5335 3535 2304 1633
09-11 49° 77° 7350 5367 3556 2318 1641
09-12 51° 78° 7392 5399 3579 2333 1651
09-13 56° 77° 7437 5434 3603 2349 1663
09-14 50° 81° 7480 5467 3627 2365 1673
09-15 55° 81° 7526 5503 3653 2383 1686
09-16 50° 80° 7569 5536 3676 2398 1696
09-17 47° 81° 7612 5569 3698 2412 1705
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-18 54° 85° 7659 5606 3725 2431 1720
09-19 57° 72° 7702 5639 3748 2446 1730
09-20 54° 76° 7745 5672 3772 2461 1740
09-21 54° 69° 7785 5702 3791 2473 1747
09-22 61° 77° 7832 5739 3818 2492 1761
09-23 59° 76° 7877 5774 3843 2509 1773
09-24 61° 74° 7923 5810 3869 2527 1786
09-25 60° 73° 7967 5844 3894 2544 1797
09-26 50° 79° 8010 5877 3917 2558 1807
09-27 57° 85° 8059 5916 3946 2579 1823
09-28 55° 78° 8104 5951 3970 2596 1835
09-29 47° 81° 8145 5982 3992 2610 1843
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-30 47° 78° 8186 6013 4012 2622 1851
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-15 27° 35° 9 0 0 0 0
02-16 21° 30° 13 0 0 0 0
02-17 18° 25° 13 0 0 0 0
02-18 20° 34° 18 0 0 0 0
02-19 17° 38° 23 0 0 0 0
02-20 24° 48° 37 4 0 0 0
02-21 35° 58° 62 19 5 0 0
02-22 33° 52° 83 29 5 0 0
02-23 22° 43° 93 30 5 0 0
02-24 19° 31° 96 30 5 0 0
02-25 26° 51° 113 37 5 0 0
02-26 29° 53° 132 46 5 0 0
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 48° 73° 170 74 24 10 5
02-28 24° 61° 191 84 24 10 5
02-29 18° 33° 194 84 24 10 5
03-01 26° 50° 210 90 24 10 5
03-02 38° 53° 234 104 28 10 5
03-03 34° 56° 256 117 30 10 5
03-04 44° 70° 292 142 45 17 7
03-05 40° 61° 320 160 54 18 7
03-06 35° 43° 337 167 54 18 7
03-07 33° 53° 358 179 55 18 7
03-08 36° 49° 379 189 56 18 7
03-09 33° 52° 399 200 56 18 7
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-10 27° 36° 409 200 56 18 7
03-11 30° 56° 429 210 57 18 7
03-12 40° 69° 462 233 69 22 7
03-13 46° 66° 496 257 83 28 8
03-14 43° 50° 520 271 88 28 8
03-15 33° 44° 537 278 88 28 8
03-16 31° 56° 558 289 89 28 8
03-17 29° 43° 573 294 89 28 8
03-18 26° 32° 580 294 89 28 8
03-19 29° 41° 593 297 89 28 8
03-20 24° 34° 600 297 89 28 8
03-21 19° 35° 605 297 89 28 8
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-22 24° 29° 609 297 89 28 8
03-23 23° 32° 615 297 89 28 8
03-24 18° 36° 620 297 89 28 8
03-25 31° 60° 643 310 93 28 8
03-26 45° 55° 672 329 101 29 8
03-27 30° 45° 687 334 101 29 8
03-28 28° 47° 703 340 101 29 8
03-29 25° 48° 717 344 101 29 8
03-30 32° 42° 732 349 101 29 8
03-31 34° 43° 749 355 101 29 8
04-01 33° 51° 769 366 101 29 8
04-02 38° 48° 790 377 102 29 8
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-03 35° 49° 810 387 102 29 8
04-04 32° 45° 827 393 102 29 8
04-05 32° 46° 843 400 102 29 8
04-06 37° 54° 867 414 106 29 8
04-07 29° 58° 888 425 107 29 8
04-08 47° 72° 926 453 125 38 13
04-09 47° 74° 965 482 144 49 19
04-10 39° 66° 995 502 154 51 19
04-11 45° 54° 1023 519 162 51 19
04-12 43° 48° 1046 533 165 51 19
04-13 39° 60° 1073 550 173 51 19
04-14 47° 75° 1113 580 192 63 25
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-15 42° 62° 1143 600 202 65 25
04-16 41° 63° 1173 620 212 67 25
04-17 51° 62° 1208 644 227 74 27
04-18 49° 61° 1240 667 240 78 27
04-19 42° 55° 1267 684 246 78 27
04-20 37° 44° 1286 693 246 78 27
04-21 36° 46° 1305 702 246 78 27
04-22 32° 63° 1331 718 252 78 27
04-23 48° 60° 1363 740 264 82 27
04-24 31° 48° 1380 747 264 82 27
04-25 25° 54° 1397 754 264 82 27
04-26 33° 63° 1423 770 270 82 27
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-27 54° 80° 1468 805 295 99 39
04-28 51° 71° 1507 834 313 110 45
04-29 52° 76° 1549 866 336 124 54
04-30 52° 67° 1587 894 354 134 59
05-01 46° 79° 1628 925 374 147 67
05-02 46° 72° 1665 952 392 156 71
05-03 56° 69° 1706 982 412 169 78
05-04 56° 74° 1748 1015 435 184 88
05-05 53° 65° 1785 1042 452 192 92
05-06 46° 65° 1819 1066 465 198 92
05-07 40° 68° 1851 1088 477 202 92
05-08 52° 72° 1891 1118 497 214 99
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-09 47° 60° 1922 1139 508 217 99
05-10 42° 64° 1953 1160 519 220 99
05-11 48° 54° 1982 1179 528 221 99
05-12 42° 70° 2016 1203 542 227 100
05-13 59° 82° 2064 1241 571 247 116
05-14 49° 63° 2098 1265 585 253 117
05-15 48° 70° 2135 1292 602 262 121
05-16 45° 77° 2174 1321 621 273 126
05-17 60° 75° 2220 1356 646 291 139
05-18 59° 80° 2267 1394 674 310 154
05-19 60° 87° 2319 1436 706 334 172
05-20 59° 84° 2369 1476 735 356 189
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-21 63° 83° 2420 1517 767 379 208
05-22 65° 84° 2473 1560 799 404 227
05-23 56° 78° 2518 1595 824 421 239
05-24 51° 79° 2561 1628 847 436 249
05-25 60° 76° 2607 1664 873 454 262
05-26 52° 76° 2649 1696 896 468 272
05-27 57° 64° 2688 1724 914 479 277
05-28 56° 71° 2729 1756 935 492 285
05-29 50° 66° 2765 1782 951 500 288
05-30 42° 68° 2798 1805 964 505 288
05-31 44° 75° 2835 1832 982 515 293
06-01 52° 75° 2877 1864 1004 528 302
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-02 60° 70° 2920 1897 1026 543 311
06-03 53° 77° 2963 1930 1050 558 322
06-04 60° 85° 3014 1971 1080 581 339
06-05 67° 82° 3066 2013 1113 606 359
06-06 61° 74° 3112 2049 1138 623 371
06-07 58° 68° 3152 2079 1159 635 379
06-08 52° 72° 3192 2109 1178 647 385
06-09 53° 71° 3232 2139 1198 659 392
06-10 51° 67° 3269 2166 1215 668 396
06-11 43° 71° 3304 2191 1230 675 398
06-12 60° 83° 3354 2230 1260 697 415
06-13 68° 87° 3409 2276 1295 724 437
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-14 59° 75° 3454 2311 1320 741 449
06-15 51° 75° 3495 2342 1341 754 457
06-16 57° 84° 3543 2380 1370 775 473
06-17 68° 90° 3600 2427 1406 803 496
06-18 76° 88° 3660 2477 1447 835 523
06-19 77° 90° 3722 2529 1488 869 552
06-20 71° 84° 3777 2574 1524 896 575
06-21 65° 87° 3831 2618 1558 922 596
06-22 69° 88° 3888 2665 1594 951 619
06-23 67° 80° 3939 2706 1626 974 638
06-24 61° 80° 3988 2745 1654 995 653
06-25 67° 81° 4040 2787 1686 1019 672
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-26 65° 79° 4090 2827 1717 1041 689
06-27 58° 70° 4132 2859 1739 1055 698
06-28 53° 70° 4172 2889 1758 1067 705
06-29 66° 85° 4225 2932 1792 1093 726
06-30 55° 76° 4268 2965 1814 1107 735
07-01 47° 76° 4307 2994 1833 1118 741
07-02 53° 77° 4350 3026 1856 1133 751
07-03 71° 83° 4404 3071 1891 1160 773
07-04 63° 83° 4456 3112 1922 1183 791
07-05 63° 81° 4506 3153 1952 1205 808
07-06 64° 76° 4554 3191 1981 1226 824
07-07 60° 82° 4603 3230 2010 1246 839
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-08 68° 87° 4659 3276 2045 1274 862
07-09 69° 84° 4714 3320 2080 1301 884
07-10 63° 73° 4759 3356 2106 1319 897
07-11 63° 80° 4809 3396 2135 1340 913
07-12 63° 80° 4858 3435 2165 1362 930
07-13 64° 85° 4911 3478 2198 1386 950
07-14 72° 86° 4968 3525 2234 1415 973
07-15 70° 84° 5022 3569 2269 1442 995
07-16 70° 83° 5077 3614 2303 1468 1016
07-17 65° 78° 5127 3653 2333 1490 1033
07-18 58° 71° 5169 3686 2355 1504 1042
07-19 55° 77° 5213 3720 2380 1520 1053
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-20 57° 80° 5260 3757 2406 1539 1067
07-21 63° 80° 5310 3797 2436 1561 1084
07-22 63° 81° 5360 3837 2466 1583 1101
07-23 65° 81° 5411 3878 2497 1606 1119
07-24 66° 75° 5459 3916 2526 1626 1134
07-25 60° 76° 5505 3952 2552 1644 1148
07-26 56° 78° 5550 3987 2577 1662 1160
07-27 56° 81° 5597 4024 2604 1680 1173
07-28 58° 86° 5647 4064 2634 1703 1191
07-29 72° 82° 5703 4109 2669 1730 1213
07-30 71° 84° 5758 4155 2704 1757 1235
07-31 68° 88° 5814 4201 2740 1785 1258
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-01 68° 88° 5870 4247 2776 1813 1281
08-02 71° 81° 5924 4291 2811 1839 1302
08-03 66° 85° 5978 4335 2844 1865 1323
08-04 63° 86° 6031 4378 2877 1890 1343
08-05 69° 81° 6084 4421 2910 1915 1363
08-06 61° 70° 6127 4454 2934 1930 1374
08-07 56° 76° 6171 4488 2958 1946 1385
08-08 56° 80° 6217 4524 2984 1964 1398
08-09 63° 76° 6265 4562 3011 1984 1412
08-10 56° 70° 6306 4593 3032 1997 1420
08-11 60° 73° 6351 4628 3057 2014 1432
08-12 52° 77° 6393 4660 3080 2028 1442
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-13 56° 81° 6440 4697 3106 2047 1455
08-14 55° 81° 6486 4733 3133 2065 1468
08-15 57° 80° 6533 4770 3159 2084 1482
08-16 65° 78° 6582 4809 3189 2105 1499
08-17 68° 75° 6632 4849 3219 2127 1516
08-18 65° 73° 6680 4887 3246 2147 1530
08-19 58° 67° 6720 4917 3267 2159 1538
08-20 52° 67° 6758 4945 3284 2169 1542
08-21 49° 71° 6796 4973 3302 2179 1547
08-22 48° 75° 6835 5002 3322 2190 1553
08-23 53° 77° 6878 5035 3344 2205 1563
08-24 58° 82° 6926 5073 3373 2225 1578
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-25 63° 86° 6979 5115 3405 2250 1598
08-26 69° 89° 7036 5163 3442 2279 1622
08-27 70° 92° 7095 5212 3481 2310 1648
08-28 67° 79° 7146 5252 3512 2333 1666
08-29 63° 79° 7195 5292 3541 2354 1682
08-30 68° 84° 7249 5336 3575 2380 1703
08-31 66° 81° 7300 5377 3606 2403 1721
09-01 59° 74° 7345 5412 3631 2420 1733
09-02 49° 68° 7382 5438 3648 2429 1737
09-03 47° 73° 7420 5466 3666 2439 1742
09-04 49° 78° 7461 5498 3687 2452 1750
09-05 54° 83° 7507 5534 3714 2470 1764
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-06 55° 70° 7547 5564 3734 2483 1771
09-07 49° 59° 7580 5586 3746 2487 1771
09-08 42° 69° 7614 5610 3760 2493 1772
09-09 57° 78° 7659 5646 3785 2510 1784
09-10 53° 79° 7703 5680 3809 2526 1795
09-11 54° 84° 7750 5716 3836 2545 1809
09-12 55° 84° 7797 5754 3863 2564 1823
09-13 56° 82° 7844 5791 3890 2583 1837
09-14 56° 82° 7891 5828 3917 2602 1851
09-15 58° 85° 7940 5867 3947 2623 1867
09-16 53° 82° 7986 5903 3973 2641 1880
09-17 52° 80° 8031 5937 3997 2658 1892
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-18 57° 82° 8078 5975 4024 2677 1906
09-19 59° 82° 8126 6013 4053 2698 1922
09-20 57° 82° 8174 6051 4080 2717 1936
09-21 60° 84° 8224 6091 4111 2740 1954
09-22 58° 79° 8271 6128 4137 2758 1967
09-23 58° 66° 8311 6158 4158 2770 1974
09-24 59° 71° 8354 6191 4181 2786 1985
09-25 62° 72° 8399 6226 4206 2802 1996
09-26 52° 71° 8439 6256 4225 2814 2003
09-27 53° 75° 8481 6288 4247 2828 2012
09-28 64° 73° 8528 6325 4274 2847 2026
09-29 64° 75° 8575 6362 4302 2866 2040
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-30 56° 75° 8619 6395 4325 2882 2051

 

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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