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MSU Poa Seedhead Flush (GDD 22)
forecast for Mon, Apr. 6. 2026

 

Forecasted GDD Total: 831 (Base 22) through Mon, Apr. 6, 2026

  

WI

        

Forecast »

“Flashback” to 2025

3/26

3/27

3/28

3/29

3/30

3/31

4/1

4/2

4/3

4/4

4/5

4/6

4/7

Done

2900

Late

2450

Heavy

1500

Early

1050

No

0

 

Generously Supported By:



Tabular Data

Daily GDD accumulation for various base temperature models in 2025 & 2026

2026Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-15 30° 54° 20 10 0 0 0
02-16 32° 60° 44 24 4 0 0
02-17 35° 43° 61 31 4 0 0
02-18 41° 56° 88 48 11 0 0
02-19 34° 46° 106 56 11 0 0
02-20 31° 40° 120 60 11 0 0
02-21 26° 30° 125 60 11 0 0
02-22 21° 26° 127 60 11 0 0
02-23 19° 26° 127 60 11 0 0
02-24 20° 35° 133 60 11 0 0
02-25 21° 32° 137 60 11 0 0
02-26 17° 40° 144 60 11 0 0
2026Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 28° 58° 165 71 12 0 0
02-28 24° 45° 178 73 12 0 0
03-01 22° 29° 181 73 12 0 0
03-02 23° 37° 189 73 12 0 0
03-03 29° 40° 201 76 12 0 0
03-04 26° 43° 214 78 12 0 0
03-05 37° 40° 230 85 12 0 0
03-06 37° 58° 255 100 17 0 0
03-07 38° 58° 282 116 23 0 0
03-08 32° 58° 305 129 27 0 0
03-09 49° 68° 342 156 43 9 4
03-10 36° 48° 362 166 44 9 4
2026Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-11 32° 37° 374 169 44 9 4
03-12 30° 43° 389 173 44 9 4
03-13 33° 42° 405 179 44 9 4
03-14 25° 35° 413 179 44 9 4
03-15 30° 37° 425 181 44 9 4
03-16 20° 30° 428 181 44 9 4
03-17 14° 22° 428 181 44 9 4
03-18 19° 37° 433 181 44 9 4
03-19 30° 46° 450 187 44 9 4
03-20 34° 57° 473 201 47 9 4
03-21 35° 64° 496 214 50 9 4
03-22 33° 58° 519 227 53 9 4
2026Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-23 28° 38° 530 228 53 9 4
03-24 30° 45° 546 234 53 9 4
03-25 35° 67° 575 253 62 10 4
03-26 34° 57° 599 266 66 10 4
03-27 29° 40° 611 269 66 10 4
03-28 25° 44° 623 271 66 10 4
03-29 41° 57° 650 288 73 10 4
03-30 44° 67° 684 311 86 15 4
03-31 37° 55° 708 325 90 15 4
04-01 33° 37° 721 329 90 15 4
04-02 34° 61° 746 344 96 15 4
04-03 40° 49° 769 356 98 15 4
2026Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-04 38° 56° 794 371 103 15 4
04-05 34° 46° 812 379 103 15 4
04-06 34° 48° 831 388 103 15 4
04-07 29° 40° 843 391 103 15 4
04-08 30° 51° 861 399 103 15 4
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-15 26° 31° 7 0 0 0 0
02-16 11° 29° 7 0 0 0 0
02-17 0° 10° 7 0 0 0 0
02-18 -6° 10° 7 0 0 0 0
02-19 1° 13° 7 0 0 0 0
02-20 8° 26° 7 0 0 0 0
02-21 11° 28° 7 0 0 0 0
02-22 15° 30° 7 0 0 0 0
02-23 20° 36° 14 0 0 0 0
02-24 33° 50° 33 9 0 0 0
02-25 32° 49° 51 18 0 0 0
02-26 30° 38° 64 20 0 0 0
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 31° 42° 78 25 0 0 0
02-28 29° 53° 98 34 0 0 0
03-01 19° 31° 101 34 0 0 0
03-02 16° 34° 104 34 0 0 0
03-03 28° 44° 118 38 0 0 0
03-04 40° 50° 141 51 3 0 0
03-05 27° 45° 155 55 3 0 0
03-06 25° 38° 165 55 3 0 0
03-07 30° 36° 176 56 3 0 0
03-08 25° 47° 190 60 3 0 0
03-09 33° 57° 213 74 6 0 0
03-10 37° 64° 242 92 15 1 0
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-11 33° 56° 265 105 18 1 0
03-12 33° 41° 280 110 18 1 0
03-13 28° 51° 297 118 18 1 0
03-14 37° 62° 325 135 25 1 0
03-15 41° 62° 354 155 35 2 0
03-16 30° 40° 367 158 35 2 0
03-17 20° 47° 378 159 35 2 0
03-18 39° 52° 402 172 38 2 0
03-19 33° 40° 416 177 38 2 0
03-20 31° 39° 429 180 38 2 0
03-21 28° 56° 449 190 38 2 0
03-22 29° 48° 466 196 38 2 0
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-23 31° 42° 480 201 38 2 0
03-24 32° 41° 495 205 38 2 0
03-25 28° 44° 509 209 38 2 0
03-26 28° 43° 522 213 38 2 0
03-27 33° 53° 543 224 39 2 0
03-28 43° 74° 580 250 56 11 4
03-29 36° 67° 609 270 65 12 4
03-30 36° 40° 625 276 65 12 4
03-31 32° 42° 640 281 65 12 4
04-01 29° 41° 653 284 65 12 4
04-02 36° 53° 676 296 68 12 4
04-03 39° 56° 701 312 74 12 4
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-04 33° 43° 718 318 74 12 4
04-05 37° 49° 739 330 75 12 4
04-06 31° 44° 755 335 75 12 4
04-07 31° 44° 770 340 75 12 4
04-08 22° 37° 777 340 75 12 4
04-09 32° 44° 794 347 75 12 4
04-10 36° 39° 809 352 75 12 4
04-11 31° 48° 827 360 75 12 4
04-12 31° 53° 846 369 75 12 4
04-13 46° 54° 874 387 83 12 4
04-14 48° 60° 907 410 95 17 4
04-15 37° 49° 928 421 96 17 4
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-16 35° 44° 945 428 96 17 4
04-17 36° 56° 969 442 100 17 4
04-18 49° 68° 1005 468 117 25 7
04-19 41° 56° 1032 485 123 25 7
04-20 37° 46° 1051 494 123 25 7
04-21 44° 54° 1078 511 130 25 7
04-22 36° 51° 1100 523 132 25 7
04-23 40° 63° 1129 542 141 27 7
04-24 45° 55° 1157 560 149 27 7
04-25 43° 49° 1181 574 153 27 7
04-26 41° 49° 1204 587 156 27 7
04-27 36° 54° 1227 600 159 27 7
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-28 45° 75° 1265 628 177 37 12
04-29 42° 75° 1301 654 193 45 16
04-30 38° 50° 1323 666 195 45 16
05-01 43° 52° 1349 682 201 45 16
05-02 42° 49° 1372 695 204 45 16
05-03 41° 46° 1394 707 206 45 16
05-04 39° 53° 1418 721 210 45 16
05-05 45° 52° 1445 738 217 45 16
05-06 44° 68° 1479 762 231 52 17
05-07 45° 52° 1505 778 237 52 17
05-08 41° 49° 1528 791 240 52 17
05-09 37° 58° 1554 807 246 52 17
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-10 45° 60° 1584 827 256 54 17
05-11 40° 59° 1612 845 264 54 17
05-12 44° 66° 1645 868 277 59 17
05-13 52° 64° 1681 894 293 67 20
05-14 51° 67° 1718 921 310 76 24
05-15 49° 70° 1756 949 328 86 29
05-16 57° 79° 1802 985 354 104 42
05-17 51° 63° 1836 1009 368 110 43
05-18 42° 54° 1862 1025 374 110 43
05-19 40° 46° 1883 1036 375 110 43
05-20 43° 48° 1906 1049 378 110 43
05-21 44° 46° 1930 1063 382 110 43
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-22 44° 53° 1956 1079 388 110 43
05-23 41° 53° 1981 1094 393 110 43
05-24 40° 55° 2006 1109 398 110 43
05-25 43° 59° 2035 1128 407 111 43
05-26 43° 58° 2064 1147 416 112 43
05-27 50° 61° 2097 1170 429 117 43
05-28 52° 57° 2130 1193 442 122 43
05-29 51° 62° 2165 1218 457 129 45
05-30 50° 70° 2203 1246 475 139 50
05-31 47° 57° 2233 1266 485 141 50
06-01 41° 59° 2261 1284 493 141 50
06-02 48° 75° 2301 1314 513 153 57
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-03 63° 78° 2349 1352 541 173 73
06-04 57° 66° 2389 1382 561 185 79
06-05 52° 70° 2428 1411 580 196 85
06-06 56° 68° 2468 1441 600 208 93
06-07 53° 67° 2506 1469 618 218 98
06-08 54° 73° 2548 1501 640 232 106
06-09 55° 64° 2585 1528 657 241 111
06-10 54° 69° 2624 1557 676 252 117
06-11 55° 83° 2672 1595 704 272 131
06-12 58° 68° 2713 1626 725 285 140
06-13 55° 62° 2749 1652 741 293 143
06-14 54° 65° 2786 1679 758 303 147
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-15 55° 65° 2824 1707 776 312 152
06-16 57° 74° 2868 1741 800 328 163
06-17 64° 88° 2922 1785 834 354 184
06-18 63° 69° 2966 1819 858 371 195
06-19 63° 79° 3015 1858 887 391 211
06-20 63° 81° 3065 1898 917 414 228
06-21 70° 90° 3123 1946 955 444 253
06-22 76° 90° 3184 1997 996 476 281
06-23 76° 89° 3245 2048 1037 509 308
06-24 63° 77° 3292 2085 1064 528 323
06-25 61° 66° 3334 2117 1086 542 332
06-26 61° 72° 3378 2151 1110 558 343
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-27 64° 82° 3429 2192 1141 581 361
06-28 62° 75° 3476 2229 1168 600 374
06-29 65° 84° 3528 2271 1200 624 394
06-30 67° 83° 3581 2314 1233 649 414
07-01 66° 81° 3633 2356 1265 673 433
07-02 67° 85° 3687 2400 1299 699 454
07-03 66° 80° 3738 2441 1330 722 472
07-04 68° 84° 3792 2485 1364 748 493
07-05 71° 86° 3849 2532 1401 777 517
07-06 63° 75° 3896 2569 1428 796 531
07-07 59° 72° 3940 2603 1452 812 541
07-08 63° 79° 3988 2641 1480 832 557
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-09 64° 72° 4034 2677 1506 850 570
07-10 60° 73° 4079 2712 1531 867 582
07-11 67° 74° 4127 2750 1559 888 597
07-12 68° 80° 4179 2792 1591 911 616
07-13 64° 77° 4228 2831 1620 932 632
07-14 63° 82° 4279 2872 1651 955 650
07-15 67° 83° 4331 2914 1683 979 669
07-16 69° 83° 4385 2958 1717 1005 690
07-17 60° 67° 4426 2989 1738 1018 698
07-18 58° 72° 4469 3022 1761 1033 708
07-19 64° 82° 4520 3063 1792 1056 726
07-20 63° 72° 4566 3099 1818 1074 739
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-21 60° 73° 4611 3134 1843 1091 751
07-22 63° 79° 4660 3173 1872 1112 767
07-23 70° 89° 4717 3220 1909 1141 791
07-24 75° 83° 4774 3267 1946 1170 815
07-25 70° 75° 4825 3308 1977 1193 832
07-26 68° 80° 4877 3350 2009 1217 852
07-27 69° 82° 4930 3393 2042 1242 872
07-28 71° 88° 4988 3441 2080 1272 897
07-29 70° 85° 5043 3486 2115 1299 919
07-30 65° 74° 5091 3524 2143 1319 934
07-31 64° 72° 5137 3560 2169 1337 947
08-01 62° 73° 5183 3596 2195 1355 960
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-02 56° 76° 5227 3630 2219 1371 971
08-03 58° 75° 5272 3665 2244 1388 982
08-04 61° 75° 5317 3700 2269 1406 995
08-05 64° 78° 5367 3740 2299 1427 1012
08-06 65° 79° 5416 3779 2328 1449 1028
08-07 66° 82° 5469 3822 2361 1473 1048
08-08 71° 87° 5525 3868 2397 1501 1071
08-09 72° 89° 5584 3917 2436 1532 1097
08-10 68° 78° 5635 3958 2467 1555 1115
08-11 73° 80° 5690 4003 2502 1582 1136
08-12 69° 80° 5742 4045 2534 1606 1156
08-13 67° 76° 5791 4084 2563 1627 1172
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-14 63° 77° 5840 4123 2592 1648 1187
08-15 66° 81° 5891 4164 2623 1671 1206
08-16 71° 82° 5946 4209 2658 1698 1228
08-17 68° 74° 5995 4248 2687 1719 1244
08-18 67° 75° 6044 4287 2716 1740 1260
08-19 69° 74° 6093 4326 2745 1762 1276
08-20 66° 71° 6140 4363 2772 1780 1290
08-21 65° 74° 6188 4401 2800 1800 1305
08-22 61° 78° 6235 4438 2827 1819 1319
08-23 64° 76° 6283 4476 2855 1839 1334
08-24 58° 70° 6325 4508 2877 1853 1343
08-25 53° 68° 6364 4537 2896 1864 1349
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-26 53° 71° 6404 4567 2916 1876 1356
08-27 54° 75° 6447 4600 2939 1891 1366
08-28 60° 72° 6491 4634 2963 1907 1377
08-29 56° 65° 6529 4662 2981 1917 1382
08-30 59° 69° 6571 4694 3003 1931 1391
08-31 51° 71° 6610 4723 3022 1942 1397
09-01 54° 74° 6652 4755 3044 1956 1406
09-02 55° 75° 6695 4788 3067 1971 1416
09-03 56° 68° 6735 4818 3087 1983 1423
09-04 46° 64° 6768 4841 3100 1988 1423
09-05 55° 64° 6805 4868 3117 1997 1427
09-06 49° 64° 6840 4893 3132 2004 1429
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-07 47° 66° 6875 4918 3147 2011 1430
09-08 47° 70° 6911 4944 3163 2019 1434
09-09 55° 72° 6952 4975 3184 2032 1442
09-10 56° 72° 6994 5007 3206 2046 1451
09-11 61° 67° 7036 5039 3228 2060 1460
09-12 57° 72° 7078 5071 3250 2074 1469
09-13 63° 72° 7124 5107 3276 2092 1481
09-14 61° 73° 7169 5142 3301 2109 1494
09-15 60° 75° 7214 5177 3326 2126 1506
09-16 58° 77° 7260 5213 3352 2144 1519
09-17 59° 78° 7306 5249 3378 2162 1532
09-18 61° 79° 7354 5287 3406 2182 1547
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-19 66° 74° 7402 5325 3434 2202 1562
09-20 65° 73° 7449 5362 3461 2221 1576
09-21 65° 75° 7497 5400 3489 2241 1591
09-22 62° 76° 7544 5437 3516 2260 1605
09-23 62° 67° 7587 5470 3539 2275 1615
09-24 61° 66° 7628 5501 3560 2289 1623
09-25 58° 70° 7670 5533 3582 2303 1632
09-26 57° 72° 7713 5566 3605 2317 1642
09-27 56° 83° 7760 5603 3632 2336 1656
09-28 58° 72° 7803 5636 3655 2351 1666
09-29 56° 77° 7847 5670 3679 2368 1677
09-30 59° 74° 7892 5705 3704 2384 1689
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55

 

Latest Updates

February 16th, 2026Welcome to the 2026 GDD Tracking Season

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!


 

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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