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MSU Annual Bluegrass Seedhead Embark Timer (GDD 22)
forecast for Thu, Dec. 18. 2025

 
  

Menominee, 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 19° 26° 1 0 0 0 0
02-16 3° 23° 1 0 0 0 0
02-17 -4° 10° 1 0 0 0 0
02-18 -10° 16° 1 0 0 0 0
02-19 -5° 21° 1 0 0 0 0
02-20 12° 27° 1 0 0 0 0
02-21 0° 27° 1 0 0 0 0
02-22 11° 28° 1 0 0 0 0
02-23 20° 33° 5 0 0 0 0
02-24 30° 50° 23 8 0 0 0
02-25 25° 42° 35 10 0 0 0
02-26 19° 40° 42 10 0 0 0
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 26° 38° 52 10 0 0 0
02-28 18° 42° 61 10 0 0 0
02-29 n/a n/a n/a n/a n/a n/a n/a
03-01 6° 22° 61 10 0 0 0
03-02 5° 30° 61 10 0 0 0
03-03 20° 40° 68 10 0 0 0
03-04 32° 37° 81 12 0 0 0
03-05 21° 35° 87 12 0 0 0
03-06 16° 35° 90 12 0 0 0
03-07 18° 38° 96 12 0 0 0
03-08 9° 38° 98 12 0 0 0
03-09 23° 52° 114 18 0 0 0
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-10 27° 51° 130 25 0 0 0
03-11 26° 49° 146 30 0 0 0
03-12 25° 37° 155 30 0 0 0
03-13 26° 44° 169 33 0 0 0
03-14 33° 49° 188 43 0 0 0
03-15 37° 49° 209 53 1 0 0
03-16 25° 36° 217 53 1 0 0
03-17 20° 36° 223 53 1 0 0
03-18 29° 41° 236 56 1 0 0
03-19 32° 35° 247 58 1 0 0
03-20 29° 36° 258 59 1 0 0
03-21 29° 42° 272 62 1 0 0
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-22 19° 34° 276 62 1 0 0
03-23 25° 37° 285 62 1 0 0
03-24 32° 37° 297 64 1 0 0
03-25 28° 37° 308 65 1 0 0
03-26 22° 40° 317 65 1 0 0
03-27 32° 51° 336 74 1 0 0
03-28 33° 36° 349 77 1 0 0
03-29 31° 33° 359 77 1 0 0
03-30 31° 34° 370 78 1 0 0
03-31 29° 35° 379 78 1 0 0
04-01 22° 36° 386 78 1 0 0
04-02 31° 37° 399 80 1 0 0
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-03 36° 44° 417 88 1 0 0
04-04 29° 41° 430 92 1 0 0
04-05 36° 43° 447 99 1 0 0
04-06 29° 42° 461 102 1 0 0
04-07 26° 38° 471 102 1 0 0
04-08 22° 37° 478 102 1 0 0
04-09 31° 39° 491 105 1 0 0
04-10 34° 40° 506 110 1 0 0
04-11 30° 44° 521 115 1 0 0
04-12 30° 46° 537 121 1 0 0
04-13 41° 45° 558 132 2 0 0
04-14 40° 48° 580 144 4 0 0
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-15 34° 43° 596 150 4 0 0
04-16 31° 41° 611 155 4 0 0
04-17 35° 47° 629 163 4 0 0
04-18 40° 50° 652 176 7 0 0
04-19 38° 49° 673 188 8 0 0
04-20 33° 42° 689 193 8 0 0
04-21 37° 42° 707 201 8 0 0
04-22 34° 48° 727 211 8 0 0
04-23 36° 51° 748 222 9 0 0
04-24 42° 50° 772 236 13 0 0
04-25 40° 42° 791 245 13 0 0
04-26 38° 48° 812 256 15 0 0
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-27 33° 48° 831 265 15 0 0
04-28 42° 55° 857 281 21 0 0
04-29 36° 54° 881 295 24 0 0
04-30 31° 46° 897 302 24 0 0
05-01 39° 41° 916 310 24 0 0
05-02 41° 47° 938 322 26 0 0
05-03 37° 45° 957 331 26 0 0
05-04 35° 52° 978 342 28 0 0
05-05 41° 54° 1004 358 34 0 0
05-06 45° 60° 1034 378 44 3 0
05-07 42° 52° 1060 394 49 3 0
05-08 37° 47° 1079 403 49 3 0
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-09 34° 55° 1102 416 52 3 0
05-10 44° 56° 1130 434 60 3 0
05-11 37° 55° 1154 448 64 3 0
05-12 45° 62° 1186 470 76 6 0
05-13 46° 61° 1217 491 87 10 0
05-14 48° 57° 1248 512 98 13 0
05-15 48° 59° 1280 534 110 16 0
05-16 51° 57° 1312 556 122 21 0
05-17 47° 57° 1342 576 132 23 0
05-18 40° 47° 1364 588 134 23 0
05-19 38° 47° 1384 599 134 23 0
05-20 42° 46° 1407 611 137 23 0
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-21 44° 50° 1432 626 142 23 0
05-22 43° 49° 1456 640 146 23 0
05-23 43° 52° 1482 656 152 23 0
05-24 44° 52° 1508 672 158 23 0
05-25 40° 54° 1533 687 163 23 0
05-26 41° 59° 1561 705 171 23 0
05-27 46° 58° 1591 725 181 25 0
05-28 50° 58° 1623 747 193 29 0
05-29 50° 63° 1657 771 207 36 2
05-30 49° 59° 1690 794 220 40 2
05-31 41° 53° 1715 809 225 40 2
06-01 39° 57° 1741 825 231 40 2
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-02 48° 64° 1775 849 245 46 3
06-03 52° 65° 1812 876 262 55 7
06-04 51° 62° 1847 901 277 62 8
06-05 45° 65° 1880 924 290 67 8
06-06 51° 62° 1914 948 304 73 10
06-07 52° 59° 1948 972 318 79 10
06-08 53° 57° 1980 994 330 83 10
06-09 51° 56° 2012 1016 342 87 10
06-10 52° 58° 2045 1039 355 92 11
06-11 50° 68° 2082 1066 372 101 15
06-12 51° 58° 2115 1089 385 106 15
06-13 47° 52° 2143 1107 393 106 15
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-14 49° 55° 2173 1127 403 108 15
06-15 52° 56° 2205 1149 415 112 15
06-16 52° 64° 2241 1175 431 121 18
06-17 58° 71° 2284 1208 454 135 28
06-18 56° 61° 2320 1234 470 144 31
06-19 56° 63° 2358 1262 488 153 36
06-20 53° 65° 2395 1289 505 162 40
06-21 58° 68° 2436 1320 526 176 48
06-22 66° 74° 2484 1358 554 196 63
06-23 65° 75° 2532 1396 582 216 78
06-24 59° 66° 2572 1426 602 228 85
06-25 54° 60° 2608 1452 618 235 88
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-26 55° 58° 2643 1477 633 242 90
06-27 56° 69° 2683 1507 653 255 97
06-28 57° 64° 2722 1536 672 265 103
06-29 60° 70° 2765 1569 695 280 113
06-30 62° 68° 2808 1602 718 296 123
07-01 60° 71° 2851 1636 741 311 134
07-02 62° 71° 2896 1670 766 328 145
07-03 60° 67° 2937 1701 787 341 153
07-04 60° 71° 2981 1735 811 356 164
07-05 65° 72° 3027 1771 837 375 177
07-06 60° 68° 3069 1803 859 389 186
07-07 55° 67° 3108 1832 878 400 192
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-08 58° 68° 3150 1864 900 413 201
07-09 60° 68° 3192 1896 922 427 210
07-10 56° 67° 3231 1926 941 439 217
07-11 61° 70° 3275 1959 965 454 227
07-12 63° 72° 3320 1994 990 472 239
07-13 61° 70° 3364 2028 1014 487 250
07-14 64° 74° 3410 2064 1040 506 263
07-15 65° 73° 3457 2101 1067 525 277
07-16 56° 69° 3498 2132 1088 537 285
07-17 55° 67° 3536 2161 1106 548 291
07-18 52° 67° 3574 2188 1124 558 295
07-19 63° 68° 3618 2222 1148 573 306
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-20 56° 71° 3659 2253 1169 586 314
07-21 57° 67° 3699 2283 1189 598 321
07-22 62° 72° 3744 2318 1214 615 333
07-23 67° 73° 3792 2356 1242 636 348
07-24 67° 75° 3841 2395 1271 657 364
07-25 65° 72° 3888 2432 1298 675 378
07-26 63° 73° 3934 2468 1324 693 391
07-27 68° 77° 3984 2508 1354 716 408
07-28 69° 76° 4035 2549 1385 738 426
07-29 67° 76° 4084 2588 1414 760 442
07-30 64° 71° 4130 2624 1440 777 455
07-31 57° 70° 4171 2655 1461 791 463
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-01 55° 71° 4212 2686 1482 804 471
08-02 58° 72° 4255 2719 1505 819 481
08-03 60° 73° 4299 2754 1529 835 493
08-04 61° 74° 4345 2789 1555 853 505
08-05 64° 74° 4392 2826 1582 872 519
08-06 64° 74° 4439 2863 1609 891 533
08-07 67° 79° 4490 2904 1640 914 551
08-08 69° 79° 4542 2946 1672 938 570
08-09 69° 78° 4594 2988 1704 961 589
08-10 69° 75° 4643 3027 1733 983 605
08-11 70° 77° 4695 3069 1765 1006 624
08-12 69° 79° 4747 3111 1797 1030 643
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-13 63° 75° 4793 3147 1823 1049 656
08-14 64° 74° 4840 3184 1850 1068 670
08-15 69° 77° 4891 3226 1881 1091 689
08-16 69° 76° 4942 3266 1912 1114 706
08-17 62° 71° 4987 3301 1937 1131 718
08-18 63° 66° 5030 3334 1960 1145 728
08-19 64° 73° 5076 3370 1986 1164 741
08-20 65° 70° 5122 3406 2012 1181 754
08-21 60° 72° 5166 3440 2036 1197 765
08-22 63° 73° 5212 3476 2062 1215 778
08-23 63° 71° 5257 3511 2087 1233 790
08-24 58° 68° 5298 3542 2108 1245 798
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-25 54° 67° 5336 3570 2126 1256 803
08-26 51° 70° 5374 3598 2144 1266 808
08-27 51° 72° 5414 3628 2164 1277 815
08-28 53° 66° 5452 3656 2182 1287 820
08-29 47° 63° 5485 3679 2195 1293 820
08-30 52° 70° 5524 3708 2214 1304 826
08-31 55° 71° 5565 3739 2235 1317 834
09-01 58° 72° 5608 3772 2258 1331 844
09-02 58° 71° 5650 3804 2280 1346 853
09-03 49° 67° 5686 3830 2296 1354 856
09-04 45° 59° 5716 3850 2306 1355 856
09-05 49° 58° 5748 3872 2318 1359 856
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-06 50° 60° 5781 3895 2331 1365 857
09-07 48° 61° 5813 3918 2343 1369 857
09-08 48° 67° 5849 3943 2359 1377 859
09-09 58° 68° 5890 3974 2380 1390 867
09-10 60° 67° 5932 4006 2402 1404 876
09-11 58° 64° 5971 4035 2421 1415 882
09-12 52° 69° 6010 4064 2440 1426 888
09-13 61° 69° 6053 4097 2463 1441 898
09-14 58° 69° 6094 4128 2484 1454 906
09-15 58° 72° 6137 4161 2507 1469 916
09-16 59° 74° 6182 4196 2532 1486 928
09-17 61° 75° 6228 4232 2558 1504 941
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-18 63° 68° 6272 4266 2582 1519 952
09-19 59° 66° 6312 4296 2602 1531 959
09-20 62° 66° 6354 4328 2624 1545 968
09-21 63° 68° 6397 4361 2647 1561 978
09-22 61° 67° 6439 4393 2669 1574 987
09-23 58° 67° 6479 4423 2689 1587 994
09-24 58° 65° 6518 4453 2708 1598 1001
09-25 55° 70° 6559 4483 2729 1610 1008
09-26 55° 66° 6597 4511 2747 1621 1013
09-27 49° 72° 6636 4540 2766 1631 1019
09-28 49° 69° 6673 4567 2783 1640 1023
09-29 51° 71° 6712 4596 2802 1652 1029
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-30 56° 67° 6751 4626 2821 1663 1036
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-15 24° 32° 6 0 0 0 0
02-16 17° 26° 6 0 0 0 0
02-17 10° 30° 6 0 0 0 0
02-18 23° 33° 12 0 0 0 0
02-19 17° 34° 16 0 0 0 0
02-20 18° 37° 21 0 0 0 0
02-21 26° 42° 34 2 0 0 0
02-22 22° 42° 43 2 0 0 0
02-23 11° 34° 44 2 0 0 0
02-24 8° 27° 44 2 0 0 0
02-25 24° 44° 56 4 0 0 0
02-26 19° 39° 64 4 0 0 0
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 27° 48° 79 10 0 0 0
02-28 12° 31° 79 10 0 0 0
02-29 11° 29° 79 10 0 0 0
03-01 27° 38° 90 10 0 0 0
03-02 29° 41° 103 13 0 0 0
03-03 33° 46° 120 21 0 0 0
03-04 34° 48° 139 30 0 0 0
03-05 31° 38° 152 33 0 0 0
03-06 27° 39° 163 34 0 0 0
03-07 31° 39° 176 37 0 0 0
03-08 31° 39° 189 40 0 0 0
03-09 30° 35° 200 40 0 0 0
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-10 29° 40° 212 43 0 0 0
03-11 27° 50° 228 49 0 0 0
03-12 34° 57° 252 62 3 0 0
03-13 33° 49° 271 71 3 0 0
03-14 35° 42° 287 78 3 0 0
03-15 30° 43° 302 83 3 0 0
03-16 36° 44° 320 90 3 0 0
03-17 23° 35° 327 90 3 0 0
03-18 24° 35° 334 90 3 0 0
03-19 33° 39° 348 94 3 0 0
03-20 21° 32° 352 94 3 0 0
03-21 18° 34° 356 94 3 0 0
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-22 26° 32° 363 94 3 0 0
03-23 18° 33° 366 94 3 0 0
03-24 27° 33° 374 94 3 0 0
03-25 33° 42° 389 99 3 0 0
03-26 36° 43° 407 107 3 0 0
03-27 24° 35° 414 107 3 0 0
03-28 26° 38° 425 107 3 0 0
03-29 27° 39° 436 109 3 0 0
03-30 33° 36° 448 111 3 0 0
03-31 33° 40° 462 115 3 0 0
04-01 34° 36° 476 118 3 0 0
04-02 33° 37° 489 121 3 0 0
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-03 33° 36° 501 124 3 0 0
04-04 34° 39° 516 129 3 0 0
04-05 32° 43° 531 134 3 0 0
04-06 31° 47° 548 141 3 0 0
04-07 32° 45° 564 147 3 0 0
04-08 39° 50° 587 160 6 0 0
04-09 38° 47° 607 170 6 0 0
04-10 40° 55° 633 186 12 0 0
04-11 40° 48° 655 198 14 0 0
04-12 41° 49° 678 211 17 0 0
04-13 36° 48° 698 221 17 0 0
04-14 38° 56° 723 236 22 0 0
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-15 37° 52° 745 248 24 0 0
04-16 37° 42° 763 255 24 0 0
04-17 39° 46° 783 266 25 0 0
04-18 42° 45° 805 278 27 0 0
04-19 37° 43° 823 285 27 0 0
04-20 34° 40° 838 291 27 0 0
04-21 33° 43° 854 297 27 0 0
04-22 35° 52° 875 308 28 0 0
04-23 35° 56° 899 322 32 0 0
04-24 31° 41° 913 326 32 0 0
04-25 26° 45° 927 329 32 0 0
04-26 37° 49° 947 340 32 0 0
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-27 44° 62° 979 361 43 3 0
04-28 40° 52° 1003 376 48 3 0
04-29 41° 48° 1025 388 50 3 0
04-30 43° 50° 1050 403 55 3 0
05-01 44° 57° 1079 422 64 4 0
05-02 40° 47° 1101 433 65 4 0
05-03 44° 58° 1129 452 74 5 0
05-04 44° 53° 1156 468 81 5 0
05-05 41° 52° 1180 483 85 5 0
05-06 40° 53° 1205 498 90 5 0
05-07 45° 51° 1231 513 96 5 0
05-08 47° 52° 1258 531 103 5 0
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-09 44° 50° 1283 546 108 5 0
05-10 39° 50° 1306 558 111 5 0
05-11 44° 58° 1335 577 119 6 0
05-12 43° 58° 1363 596 128 6 0
05-13 45° 53° 1390 613 135 6 0
05-14 41° 52° 1414 627 139 6 0
05-15 40° 55° 1440 642 144 6 0
05-16 43° 52° 1465 658 150 6 0
05-17 45° 58° 1495 678 160 8 0
05-18 49° 61° 1528 701 173 13 0
05-19 53° 62° 1563 726 188 20 2
05-20 50° 58° 1595 747 200 24 2
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-21 46° 58° 1625 767 210 26 2
05-22 53° 59° 1659 792 224 32 4
05-23 50° 64° 1694 817 239 39 6
05-24 47° 57° 1724 837 249 41 6
05-25 49° 60° 1757 859 261 45 6
05-26 51° 55° 1787 880 272 48 6
05-27 50° 59° 1820 902 285 53 6
05-28 50° 58° 1852 925 297 57 6
05-29 48° 56° 1882 945 307 59 6
05-30 41° 59° 1910 963 315 59 6
05-31 45° 63° 1942 985 327 63 6
06-01 54° 57° 1976 1009 341 69 6
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-02 51° 66° 2012 1035 357 77 10
06-03 54° 58° 2046 1059 371 83 11
06-04 54° 64° 2084 1086 389 93 15
06-05 55° 66° 2122 1115 407 103 20
06-06 53° 59° 2157 1139 421 109 22
06-07 53° 66° 2194 1167 439 119 26
06-08 51° 61° 2228 1191 453 125 27
06-09 52° 58° 2261 1214 466 130 27
06-10 46° 59° 2292 1234 477 133 27
06-11 42° 57° 2319 1252 484 133 27
06-12 51° 66° 2355 1278 500 141 31
06-13 59° 74° 2400 1313 525 157 42
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-14 55° 64° 2438 1340 542 167 47
06-15 51° 63° 2473 1366 558 174 49
06-16 56° 66° 2512 1394 577 185 55
06-17 60° 68° 2554 1427 599 199 64
06-18 57° 67° 2594 1457 619 211 71
06-19 61° 68° 2636 1489 641 226 81
06-20 56° 64° 2674 1517 659 236 85
06-21 57° 61° 2712 1544 676 245 90
06-22 57° 64° 2750 1573 695 255 95
06-23 58° 69° 2791 1604 716 269 104
06-24 55° 66° 2830 1632 735 279 109
06-25 61° 78° 2877 1670 762 298 123
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-26 57° 67° 2917 1700 782 310 130
06-27 51° 63° 2952 1725 797 317 132
06-28 57° 62° 2989 1752 814 327 137
06-29 58° 74° 3033 1786 838 343 147
06-30 51° 64° 3069 1812 854 350 150
07-01 49° 65° 3104 1837 869 357 152
07-02 58° 62° 3142 1865 887 367 157
07-03 60° 74° 3187 1900 912 384 169
07-04 61° 70° 3230 1933 935 400 180
07-05 60° 64° 3271 1963 956 412 187
07-06 59° 69° 3312 1995 977 426 196
07-07 61° 70° 3356 2029 1001 441 206
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-08 64° 70° 3401 2064 1026 458 218
07-09 61° 71° 3445 2098 1050 474 229
07-10 63° 71° 3490 2133 1075 492 241
07-11 60° 71° 3534 2166 1099 507 252
07-12 62° 74° 3580 2202 1124 525 265
07-13 65° 74° 3627 2240 1152 545 280
07-14 67° 76° 3677 2280 1182 566 296
07-15 66° 76° 3726 2319 1211 588 312
07-16 65° 73° 3774 2356 1238 607 327
07-17 61° 68° 3816 2389 1261 621 336
07-18 54° 69° 3856 2418 1281 633 343
07-19 58° 73° 3899 2452 1304 648 353
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-20 63° 74° 3946 2488 1331 667 367
07-21 61° 71° 3990 2522 1355 683 378
07-22 56° 73° 4032 2555 1377 697 387
07-23 63° 67° 4075 2588 1400 712 397
07-24 60° 69° 4118 2620 1422 727 407
07-25 53° 70° 4157 2650 1442 738 413
07-26 57° 71° 4200 2682 1464 753 423
07-27 63° 75° 4246 2719 1491 772 437
07-28 65° 74° 4294 2757 1519 791 451
07-29 69° 76° 4345 2797 1550 814 469
07-30 67° 79° 4396 2838 1581 837 487
07-31 68° 75° 4445 2878 1610 859 503
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-01 67° 73° 4494 2916 1639 879 519
08-02 67° 80° 4545 2958 1670 903 537
08-03 66° 76° 4594 2997 1699 923 553
08-04 68° 75° 4644 3036 1728 945 570
08-05 63° 72° 4689 3071 1754 962 582
08-06 58° 74° 4733 3105 1777 978 593
08-07 54° 73° 4774 3137 1799 992 601
08-08 65° 73° 4821 3174 1826 1011 615
08-09 56° 69° 4861 3204 1846 1023 622
08-10 58° 66° 4902 3234 1866 1035 630
08-11 58° 72° 4945 3268 1890 1050 640
08-12 59° 74° 4990 3302 1915 1067 652
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-13 61° 75° 5036 3339 1941 1085 665
08-14 62° 76° 5083 3376 1968 1104 679
08-15 64° 74° 5130 3413 1995 1123 693
08-16 67° 75° 5179 3452 2024 1144 709
08-17 65° 73° 5226 3489 2051 1164 723
08-18 65° 72° 5273 3525 2078 1182 737
08-19 59° 72° 5316 3559 2101 1197 747
08-20 52° 66° 5353 3586 2118 1207 752
08-21 52° 71° 5393 3616 2138 1218 758
08-22 56° 72° 5435 3648 2160 1232 767
08-23 65° 72° 5481 3684 2186 1251 781
08-24 67° 75° 5531 3723 2215 1272 797
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-25 62° 75° 5577 3760 2242 1291 811
08-26 70° 78° 5629 3802 2274 1315 829
08-27 70° 81° 5683 3846 2308 1340 850
08-28 62° 70° 5727 3880 2332 1356 861
08-29 58° 71° 5769 3912 2354 1371 871
08-30 67° 75° 5818 3951 2383 1392 887
08-31 63° 75° 5865 3988 2410 1411 901
09-01 60° 72° 5909 4022 2434 1427 911
09-02 51° 70° 5948 4051 2453 1437 917
09-03 58° 71° 5991 4083 2476 1452 927
09-04 62° 72° 6036 4119 2501 1469 939
09-05 58° 68° 6077 4150 2522 1482 947
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-06 52° 58° 6110 4173 2535 1487 947
09-07 48° 63° 6144 4196 2549 1493 948
09-08 51° 70° 6182 4225 2567 1503 953
09-09 60° 71° 6225 4258 2590 1519 964
09-10 59° 72° 6269 4292 2614 1534 974
09-11 63° 73° 6315 4328 2640 1552 987
09-12 59° 73° 6359 4362 2664 1568 998
09-13 59° 69° 6401 4393 2686 1582 1007
09-14 60° 71° 6445 4427 2709 1598 1018
09-15 63° 74° 6491 4464 2736 1616 1031
09-16 60° 74° 6536 4499 2761 1633 1043
09-17 59° 73° 6580 4533 2785 1650 1054
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-18 57° 73° 6623 4566 2808 1665 1064
09-19 57° 73° 6666 4599 2831 1679 1074
09-20 65° 72° 6712 4635 2857 1698 1088
09-21 58° 71° 6755 4667 2880 1712 1097
09-22 57° 67° 6795 4697 2900 1724 1104
09-23 48° 63° 6828 4721 2913 1730 1105
09-24 57° 67° 6868 4751 2933 1741 1111
09-25 51° 71° 6907 4780 2952 1753 1117
09-26 53° 71° 6947 4810 2972 1765 1125
09-27 56° 71° 6989 4841 2994 1778 1133
09-28 57° 69° 7030 4872 3015 1791 1141
09-29 58° 70° 7072 4905 3037 1805 1150
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-30 54° 70° 7112 4935 3057 1817 1157

 

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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