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MSU Annual Bluegrass Seedhead Embark Timer (GDD 22)
through Mon, Mar. 30. 2026

 

GDD Total: 684 (Base 22) through Mon, Mar. 30, 2026

  

Milwaukee, WI

        

Forecast »

“Flashback” to 2025

3/28

3/29

3/30

3/31

4/1

4/2

4/3

4/4

4/5

4/6

4/7

4/8

4/9

Done

1450

Over

1050

Target

680

Close

380

Under

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 31° 57° 22 12 2 0 0
02-16 35° 61° 48 28 8 0 0
02-17 35° 48° 68 38 8 0 0
02-18 43° 57° 96 56 16 0 0
02-19 32° 48° 114 64 16 0 0
02-20 29° 38° 126 66 16 0 0
02-21 24° 29° 130 66 16 0 0
02-22 19° 25° 130 66 16 0 0
02-23 17° 25° 130 66 16 0 0
02-24 17° 34° 133 66 16 0 0
02-25 17° 29° 134 66 16 0 0
02-26 12° 40° 138 66 16 0 0
2026Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 27° 59° 159 77 17 0 0
02-28 21° 45° 171 78 17 0 0
03-01 17° 28° 171 78 17 0 0
03-02 18° 39° 178 78 17 0 0
03-03 28° 42° 190 81 17 0 0
03-04 23° 48° 204 84 17 0 0
03-05 38° 42° 222 92 17 0 0
03-06 38° 59° 248 109 24 0 0
03-07 37° 59° 274 124 30 0 0
03-08 31° 59° 297 138 33 0 0
03-09 48° 72° 336 166 52 11 6
03-10 36° 51° 358 178 53 11 6
2026Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-11 31° 36° 369 180 53 11 6
03-12 29° 43° 383 184 53 11 6
03-13 31° 42° 398 188 53 11 6
03-14 24° 35° 405 188 53 11 6
03-15 28° 35° 415 188 53 11 6
03-16 16° 28° 415 188 53 11 6
03-17 7° 21° 415 188 53 11 6
03-18 16° 36° 419 188 53 11 6
03-19 30° 48° 436 195 53 11 6
03-20 31° 58° 459 208 56 11 6
03-21 35° 64° 486 225 63 11 6
03-22 32° 58° 509 238 66 11 6
2026Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-23 27° 41° 521 240 66 11 6
03-24 27° 50° 538 247 66 11 6
03-25 35° 71° 569 268 77 14 6
03-26 34° 57° 593 282 81 14 6
03-27 28° 39° 605 284 81 14 6
03-28 23° 45° 616 286 81 14 6
03-29 40° 63° 646 305 90 15 6
03-30 45° 75° 684 333 108 26 11
03-31 38° 60° 711 350 116 26 11
04-01 31° 38° 724 353 116 26 11
04-02 32° 57° 747 366 118 26 11
04-03 35° 59° 771 380 123 26 11
2026Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-04 33° 52° 792 391 123 26 11
04-05 30° 51° 810 399 123 26 11
04-06 35° 46° 828 408 123 26 11
04-07 22° 41° 838 408 123 26 11
04-08 29° 61° 861 421 126 26 11
04-09 46° 61° 892 442 138 29 11
04-10 41° 55° 918 458 143 29 11
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-15 23° 30° 4 0 0 0 0
02-16 7° 25° 4 0 0 0 0
02-17 -3° 6° 4 0 0 0 0
02-18 -10° 8° 4 0 0 0 0
02-19 -2° 11° 4 0 0 0 0
02-20 6° 25° 4 0 0 0 0
02-21 7° 27° 4 0 0 0 0
02-22 13° 27° 4 0 0 0 0
02-23 18° 36° 10 0 0 0 0
02-24 33° 51° 30 10 0 0 0
02-25 32° 52° 50 20 0 0 0
02-26 32° 41° 64 25 0 0 0
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 30° 43° 79 29 0 0 0
02-28 28° 55° 99 39 0 0 0
03-01 16° 28° 99 39 0 0 0
03-02 11° 34° 100 39 0 0 0
03-03 26° 46° 113 43 0 0 0
03-04 40° 50° 137 56 3 0 0
03-05 27° 42° 149 58 3 0 0
03-06 23° 37° 157 58 3 0 0
03-07 28° 35° 167 58 3 0 0
03-08 21° 48° 179 61 3 0 0
03-09 30° 60° 202 74 7 0 0
03-10 36° 67° 232 94 16 2 0
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-11 31° 56° 254 105 18 2 0
03-12 31° 45° 270 112 18 2 0
03-13 28° 56° 289 121 18 2 0
03-14 38° 72° 322 144 31 7 0
03-15 40° 63° 352 164 40 8 0
03-16 28° 39° 363 165 40 8 0
03-17 24° 52° 379 171 40 8 0
03-18 41° 59° 406 188 48 8 0
03-19 33° 41° 421 193 48 8 0
03-20 29° 38° 433 195 48 8 0
03-21 28° 59° 454 206 50 8 0
03-22 28° 48° 470 212 50 8 0
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-23 29° 45° 485 217 50 8 0
03-24 30° 40° 499 220 50 8 0
03-25 24° 44° 511 223 50 8 0
03-26 25° 48° 525 227 50 8 0
03-27 32° 58° 548 240 53 8 0
03-28 43° 78° 587 269 72 19 6
03-29 36° 68° 617 289 82 21 6
03-30 35° 41° 633 295 82 21 6
03-31 31° 43° 648 300 82 21 6
04-01 26° 39° 659 300 82 21 6
04-02 34° 55° 681 312 84 21 6
04-03 39° 53° 705 327 88 21 6
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-04 32° 46° 722 334 88 21 6
04-05 36° 51° 744 345 90 21 6
04-06 29° 49° 761 352 90 21 6
04-07 28° 43° 774 356 90 21 6
04-08 20° 40° 783 356 90 21 6
04-09 31° 47° 800 363 90 21 6
04-10 34° 40° 815 368 90 21 6
04-11 30° 53° 834 378 90 21 6
04-12 30° 59° 857 391 92 21 6
04-13 47° 60° 889 412 104 25 6
04-14 48° 61° 921 435 116 29 6
04-15 36° 51° 942 446 118 29 6
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-16 32° 49° 961 454 118 29 6
04-17 35° 61° 986 470 123 29 6
04-18 51° 69° 1024 498 141 39 11
04-19 44° 57° 1053 516 150 40 11
04-20 38° 48° 1074 528 151 40 11
04-21 44° 53° 1101 545 158 40 11
04-22 35° 56° 1125 558 162 40 11
04-23 41° 71° 1158 582 175 45 12
04-24 49° 60° 1191 604 188 50 12
04-25 45° 54° 1218 622 195 50 12
04-26 40° 55° 1244 637 201 50 12
04-27 34° 58° 1268 651 205 50 12
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-28 46° 81° 1309 683 226 63 20
04-29 43° 79° 1348 712 245 74 26
04-30 36° 54° 1371 725 248 74 26
05-01 44° 53° 1398 741 255 74 26
05-02 43° 53° 1423 757 260 74 26
05-03 41° 51° 1447 771 264 74 26
05-04 38° 62° 1475 788 272 74 26
05-05 45° 57° 1504 808 281 75 26
05-06 45° 73° 1542 835 299 85 30
05-07 49° 57° 1572 856 309 87 30
05-08 40° 55° 1598 871 315 87 30
05-09 34° 68° 1627 890 324 89 30
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-10 45° 65° 1660 914 337 94 31
05-11 38° 67° 1691 935 348 97 31
05-12 45° 77° 1730 964 367 108 37
05-13 56° 70° 1772 995 389 121 45
05-14 56° 76° 1815 1029 412 137 56
05-15 54° 79° 1860 1063 437 154 67
05-16 57° 85° 1909 1102 466 175 83
05-17 51° 63° 1944 1127 481 181 85
05-18 41° 56° 1970 1144 487 181 85
05-19 38° 48° 1991 1155 488 181 85
05-20 41° 47° 2014 1167 491 181 85
05-21 43° 47° 2037 1180 494 181 85
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-22 45° 56° 2065 1199 502 182 85
05-23 40° 59° 2092 1216 509 182 85
05-24 39° 60° 2120 1233 517 182 85
05-25 41° 65° 2151 1254 528 185 85
05-26 42° 64° 2182 1275 539 188 85
05-27 50° 68° 2219 1302 556 197 89
05-28 55° 59° 2254 1327 571 204 91
05-29 52° 68° 2292 1355 589 213 96
05-30 51° 71° 2331 1384 608 224 102
05-31 45° 63° 2363 1406 620 228 102
06-01 40° 68° 2394 1428 631 232 102
06-02 49° 82° 2438 1462 655 248 113
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-03 66° 85° 2491 1505 688 273 133
06-04 59° 72° 2535 1538 712 289 143
06-05 53° 76° 2577 1571 734 303 153
06-06 58° 74° 2621 1604 758 319 163
06-07 54° 74° 2663 1637 780 333 173
06-08 53° 77° 2707 1670 804 348 183
06-09 55° 64° 2744 1697 821 358 188
06-10 53° 70° 2784 1727 841 370 194
06-11 56° 86° 2833 1766 870 390 210
06-12 58° 70° 2875 1798 892 404 219
06-13 54° 64° 2912 1825 909 414 223
06-14 53° 71° 2952 1856 929 426 231
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-15 55° 73° 2994 1888 951 440 240
06-16 59° 79° 3041 1925 978 459 254
06-17 66° 89° 3097 1970 1014 487 277
06-18 66° 75° 3146 2009 1043 507 292
06-19 64° 82° 3197 2050 1074 530 310
06-20 66° 84° 3250 2093 1107 556 330
06-21 73° 93° 3311 2144 1148 589 358
06-22 78° 93° 3374 2198 1191 624 389
06-23 74° 93° 3436 2249 1233 658 417
06-24 67° 82° 3488 2292 1265 682 437
06-25 63° 71° 3533 2327 1290 699 449
06-26 63° 76° 3581 2364 1318 719 463
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-27 64° 84° 3633 2406 1350 743 482
06-28 61° 81° 3682 2445 1379 764 499
06-29 66° 90° 3738 2491 1415 792 521
06-30 69° 86° 3793 2537 1450 819 544
07-01 65° 84° 3846 2579 1483 844 563
07-02 66° 87° 3901 2624 1518 871 585
07-03 66° 85° 3954 2668 1551 896 606
07-04 68° 87° 4010 2713 1587 924 628
07-05 72° 89° 4068 2762 1625 954 654
07-06 63° 75° 4115 2799 1652 973 668
07-07 57° 77° 4160 2834 1677 990 680
07-08 62° 82° 4210 2874 1707 1012 697
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-09 64° 78° 4259 2912 1736 1033 713
07-10 59° 77° 4305 2949 1762 1051 726
07-11 66° 78° 4355 2989 1792 1073 743
07-12 68° 82° 4408 3031 1825 1098 762
07-13 62° 79° 4457 3070 1854 1118 778
07-14 62° 85° 4508 3111 1885 1142 797
07-15 66° 87° 4563 3156 1920 1169 818
07-16 66° 87° 4618 3201 1955 1195 840
07-17 58° 65° 4657 3230 1974 1207 847
07-18 52° 72° 4697 3261 1994 1219 854
07-19 63° 85° 4749 3302 2026 1243 872
07-20 62° 74° 4795 3338 2052 1261 885
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-21 57° 75° 4839 3372 2076 1277 896
07-22 60° 83° 4888 3411 2105 1298 913
07-23 69° 92° 4946 3460 2143 1328 938
07-24 75° 82° 5003 3507 2180 1357 962
07-25 69° 79° 5055 3549 2212 1381 981
07-26 66° 82° 5107 3590 2244 1405 999
07-27 67° 88° 5163 3636 2280 1433 1022
07-28 72° 92° 5223 3686 2320 1465 1049
07-29 70° 87° 5279 3732 2356 1493 1072
07-30 63° 74° 5326 3769 2383 1512 1086
07-31 61° 73° 5370 3804 2407 1528 1098
08-01 56° 73° 5413 3837 2430 1543 1108
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-02 52° 79° 5457 3870 2454 1558 1118
08-03 54° 78° 5501 3904 2478 1575 1129
08-04 57° 77° 5546 3939 2503 1592 1141
08-05 59° 80° 5594 3977 2531 1612 1156
08-06 61° 82° 5643 4017 2560 1633 1173
08-07 64° 86° 5696 4059 2593 1658 1192
08-08 70° 91° 5754 4108 2631 1688 1218
08-09 71° 92° 5814 4157 2671 1720 1244
08-10 68° 78° 5865 4199 2702 1743 1263
08-11 72° 82° 5920 4243 2737 1770 1284
08-12 69° 80° 5972 4286 2769 1794 1304
08-13 64° 78° 6022 4325 2799 1816 1320
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-14 60° 80° 6069 4363 2826 1835 1335
08-15 64° 84° 6121 4405 2858 1859 1354
08-16 70° 84° 6176 4450 2893 1886 1376
08-17 65° 75° 6224 4487 2921 1906 1391
08-18 64° 74° 6271 4524 2948 1925 1404
08-19 67° 75° 6320 4564 2977 1946 1421
08-20 63° 73° 6366 4599 3003 1964 1434
08-21 62° 75° 6412 4636 3029 1982 1447
08-22 58° 79° 6459 4672 3056 2001 1460
08-23 60° 75° 6504 4708 3081 2018 1473
08-24 55° 69° 6544 4737 3101 2030 1480
08-25 51° 67° 6581 4764 3118 2039 1483
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-26 48° 70° 6618 4791 3135 2048 1488
08-27 50° 74° 6658 4822 3155 2060 1495
08-28 56° 71° 6700 4853 3177 2074 1503
08-29 51° 65° 6736 4879 3193 2082 1506
08-30 55° 69° 6775 4909 3212 2093 1513
08-31 46° 72° 6813 4936 3230 2103 1517
09-01 49° 75° 6853 4966 3250 2115 1524
09-02 51° 76° 6895 4998 3272 2128 1533
09-03 53° 67° 6933 5026 3290 2138 1538
09-04 43° 62° 6963 5046 3300 2141 1538
09-05 51° 61° 6997 5071 3314 2147 1539
09-06 46° 63° 7030 5093 3327 2151 1539
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-07 43° 64° 7061 5115 3338 2155 1539
09-08 42° 70° 7096 5139 3353 2161 1541
09-09 51° 74° 7136 5170 3373 2174 1548
09-10 53° 74° 7177 5201 3394 2187 1557
09-11 57° 71° 7220 5233 3417 2202 1566
09-12 56° 75° 7263 5267 3440 2217 1576
09-13 60° 72° 7308 5301 3465 2234 1588
09-14 61° 76° 7354 5338 3491 2252 1601
09-15 57° 78° 7399 5373 3516 2269 1614
09-16 55° 81° 7446 5409 3543 2288 1627
09-17 56° 83° 7493 5447 3570 2307 1641
09-18 60° 83° 7543 5486 3600 2328 1658
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-19 65° 75° 7591 5524 3628 2348 1673
09-20 64° 75° 7638 5562 3655 2368 1687
09-21 63° 77° 7686 5599 3683 2388 1702
09-22 60° 77° 7732 5636 3709 2406 1715
09-23 59° 67° 7773 5667 3730 2419 1724
09-24 57° 66° 7813 5697 3750 2431 1731
09-25 55° 72° 7855 5728 3772 2445 1739
09-26 55° 74° 7897 5761 3794 2459 1748
09-27 53° 83° 7943 5797 3820 2477 1761
09-28 52° 73° 7984 5827 3841 2489 1769
09-29 52° 82° 8028 5862 3865 2506 1780
09-30 56° 77° 8073 5896 3890 2523 1792
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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