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MSU Annual Bluegrass Seedhead Embark Timer (GDD 22)
through Tue, Dec. 9. 2025

 
  

Champaign, IL

        

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 31° 40° 14 4 0 0 0
02-16 15° 31° 15 4 0 0 0
02-17 7° 18° 15 4 0 0 0
02-18 3° 15° 15 4 0 0 0
02-19 4° 21° 15 4 0 0 0
02-20 2° 25° 15 4 0 0 0
02-21 7° 31° 15 4 0 0 0
02-22 13° 38° 18 4 0 0 0
02-23 23° 50° 32 8 0 0 0
02-24 33° 55° 55 20 2 0 0
02-25 35° 59° 79 35 7 0 0
02-26 32° 54° 101 46 8 0 0
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 34° 54° 123 59 11 0 0
02-28 32° 67° 151 76 18 0 0
02-29 n/a n/a n/a n/a n/a n/a n/a
03-01 21° 41° 160 76 18 0 0
03-02 15° 39° 165 76 18 0 0
03-03 27° 56° 185 86 18 0 0
03-04 49° 61° 218 109 32 5 0
03-05 32° 53° 239 120 32 5 0
03-06 28° 42° 252 123 32 5 0
03-07 33° 53° 273 134 33 5 0
03-08 30° 51° 291 142 33 5 0
03-09 31° 61° 315 156 37 5 0
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-10 35° 70° 345 176 47 8 0
03-11 42° 68° 378 199 60 13 0
03-12 36° 72° 410 221 72 17 0
03-13 42° 77° 447 248 89 26 5
03-14 52° 80° 491 282 113 42 16
03-15 47° 66° 526 307 128 49 17
03-16 30° 44° 541 312 128 49 17
03-17 23° 55° 558 319 128 49 17
03-18 43° 75° 595 346 145 58 21
03-19 45° 67° 629 370 159 64 23
03-20 33° 44° 645 376 159 64 23
03-21 30° 58° 667 388 161 64 23
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-22 36° 52° 689 400 163 64 23
03-23 38° 53° 712 413 166 64 23
03-24 35° 54° 735 426 169 64 23
03-25 38° 49° 756 437 170 64 23
03-26 33° 57° 779 450 173 64 23
03-27 44° 57° 807 468 182 64 23
03-28 50° 80° 851 502 205 80 33
03-29 60° 68° 893 534 227 94 42
03-30 48° 72° 930 561 244 103 46
03-31 38° 50° 952 573 246 103 46
04-01 31° 51° 971 582 246 103 46
04-02 47° 76° 1010 611 266 115 53
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-03 49° 64° 1045 636 280 121 54
04-04 41° 54° 1070 651 286 121 54
04-05 44° 56° 1098 669 293 121 54
04-06 38° 49° 1120 681 295 121 54
04-07 32° 52° 1139 690 295 121 54
04-08 25° 44° 1152 693 295 121 54
04-09 33° 52° 1173 704 296 121 54
04-10 35° 62° 1199 720 302 121 54
04-11 40° 54° 1224 735 307 121 54
04-12 32° 60° 1248 749 311 121 54
04-13 47° 70° 1285 776 328 130 58
04-14 53° 65° 1322 803 345 139 62
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-15 44° 58° 1351 822 354 140 62
04-16 36° 63° 1378 839 361 140 62
04-17 47° 65° 1412 863 375 146 63
04-18 61° 77° 1460 901 403 165 77
04-19 54° 70° 1499 930 422 177 84
04-20 51° 74° 1540 961 443 189 92
04-21 49° 67° 1576 987 459 198 95
04-22 43° 73° 1612 1013 475 205 98
04-23 51° 78° 1655 1046 498 220 107
04-24 51° 82° 1699 1080 522 236 119
04-25 52° 73° 1740 1111 543 249 126
04-26 47° 60° 1771 1132 555 253 126
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-27 40° 68° 1803 1154 566 257 126
04-28 53° 83° 1849 1190 592 275 139
04-29 56° 80° 1895 1226 619 293 152
04-30 49° 67° 1932 1253 635 301 155
05-01 62° 70° 1975 1286 658 317 166
05-02 57° 68° 2016 1317 679 329 174
05-03 49° 60° 2048 1339 691 334 174
05-04 45° 50° 2074 1355 697 334 174
05-05 47° 61° 2106 1377 709 338 174
05-06 46° 73° 2143 1404 727 347 179
05-07 53° 79° 2188 1439 751 363 190
05-08 50° 75° 2228 1469 771 376 197
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-09 43° 71° 2263 1494 786 383 199
05-10 43° 83° 2305 1526 808 396 208
05-11 45° 82° 2346 1557 829 410 216
05-12 60° 78° 2393 1594 856 429 230
05-13 60° 78° 2440 1631 883 448 244
05-14 61° 84° 2491 1672 914 470 262
05-15 67° 91° 2548 1719 951 500 286
05-16 60° 85° 2598 1759 981 522 303
05-17 56° 72° 2640 1791 1003 536 312
05-18 51° 77° 2682 1823 1025 550 321
05-19 53° 77° 2725 1856 1048 565 331
05-20 59° 77° 2771 1892 1074 583 344
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-21 54° 63° 2807 1918 1091 591 348
05-22 50° 58° 2840 1941 1103 596 348
05-23 45° 69° 2875 1966 1118 603 349
05-24 51° 73° 2915 1996 1138 614 356
05-25 55° 67° 2954 2025 1157 626 363
05-26 49° 73° 2993 2054 1176 637 369
05-27 57° 75° 3037 2088 1200 653 380
05-28 59° 68° 3079 2120 1222 667 389
05-29 53° 67° 3117 2148 1240 677 393
05-30 58° 79° 3163 2184 1266 695 407
05-31 59° 79° 3210 2221 1293 714 421
06-01 54° 78° 3254 2255 1317 730 432
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-02 52° 84° 3300 2291 1343 748 445
06-03 66° 87° 3355 2336 1378 775 467
06-04 66° 76° 3404 2375 1407 796 483
06-05 61° 74° 3449 2410 1432 813 495
06-06 61° 74° 3495 2446 1458 831 508
06-07 59° 76° 3540 2481 1483 848 520
06-08 63° 79° 3589 2520 1512 869 536
06-09 59° 78° 3636 2557 1539 888 549
06-10 54° 76° 3679 2590 1562 903 560
06-11 58° 85° 3728 2629 1591 924 576
06-12 63° 82° 3778 2669 1622 946 593
06-13 69° 80° 3831 2712 1654 971 613
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-14 67° 78° 3881 2752 1684 993 630
06-15 65° 81° 3932 2793 1716 1016 648
06-16 69° 82° 3986 2837 1749 1042 669
06-17 67° 85° 4040 2881 1783 1068 690
06-18 71° 85° 4097 2928 1820 1096 713
06-19 67° 82° 4149 2970 1852 1121 732
06-20 65° 82° 4200 3011 1883 1144 751
06-21 74° 92° 4261 3062 1924 1177 778
06-22 75° 92° 4322 3113 1965 1210 807
06-23 74° 92° 4383 3164 2006 1243 835
06-24 76° 92° 4445 3216 2048 1277 864
06-25 75° 91° 4506 3267 2089 1309 891
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-26 74° 92° 4567 3318 2130 1343 920
06-27 74° 87° 4625 3366 2169 1373 945
06-28 70° 89° 4683 3414 2206 1403 970
06-29 72° 86° 4740 3461 2243 1432 994
06-30 73° 87° 4798 3509 2281 1462 1019
07-01 70° 83° 4853 3554 2316 1488 1040
07-02 65° 86° 4906 3597 2349 1514 1061
07-03 68° 88° 4962 3643 2385 1542 1084
07-04 67° 90° 5019 3690 2422 1571 1108
07-05 69° 90° 5077 3738 2460 1601 1132
07-06 74° 88° 5136 3787 2499 1632 1158
07-07 69° 83° 5190 3831 2533 1658 1180
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-08 64° 87° 5244 3875 2567 1683 1200
07-09 69° 86° 5299 3920 2602 1711 1223
07-10 68° 87° 5355 3966 2638 1738 1245
07-11 72° 91° 5414 4015 2677 1770 1272
07-12 70° 81° 5467 4058 2710 1795 1292
07-13 69° 81° 5520 4101 2743 1820 1312
07-14 68° 85° 5575 4146 2778 1847 1334
07-15 71° 86° 5631 4192 2814 1875 1357
07-16 71° 90° 5690 4241 2853 1906 1382
07-17 71° 84° 5745 4286 2888 1933 1405
07-18 65° 84° 5798 4329 2921 1958 1425
07-19 70° 81° 5851 4372 2955 1983 1445
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-20 72° 81° 5906 4417 2989 2010 1467
07-21 72° 82° 5961 4462 3024 2037 1489
07-22 68° 85° 6016 4507 3059 2063 1510
07-23 71° 90° 6074 4555 3097 2094 1536
07-24 75° 91° 6136 4607 3139 2127 1564
07-25 75° 90° 6197 4658 3180 2160 1592
07-26 74° 88° 6256 4707 3219 2191 1618
07-27 74° 89° 6315 4756 3258 2223 1645
07-28 75° 90° 6376 4807 3299 2255 1672
07-29 73° 90° 6435 4856 3339 2287 1699
07-30 71° 86° 6492 4903 3375 2316 1723
07-31 67° 76° 6541 4942 3404 2337 1739
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-01 60° 77° 6588 4979 3431 2356 1753
08-02 59° 76° 6633 5014 3456 2373 1765
08-03 56° 77° 6678 5049 3481 2390 1776
08-04 63° 80° 6727 5088 3510 2411 1793
08-05 64° 81° 6777 5128 3541 2433 1810
08-06 64° 85° 6830 5171 3573 2458 1830
08-07 70° 88° 6886 5217 3610 2486 1853
08-08 70° 88° 6944 5265 3647 2515 1877
08-09 70° 89° 7001 5312 3684 2545 1902
08-10 72° 89° 7059 5360 3722 2575 1927
08-11 71° 89° 7117 5408 3760 2605 1952
08-12 71° 88° 7175 5456 3798 2635 1977
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-13 69° 86° 7231 5502 3834 2663 2000
08-14 67° 86° 7285 5546 3868 2689 2021
08-15 68° 91° 7343 5594 3906 2719 2046
08-16 74° 94° 7405 5646 3948 2753 2075
08-17 69° 90° 7462 5693 3986 2782 2099
08-18 74° 91° 7523 5744 4026 2815 2127
08-19 73° 86° 7581 5792 4064 2845 2152
08-20 66° 80° 7632 5833 4095 2868 2170
08-21 62° 80° 7681 5872 4124 2889 2185
08-22 60° 79° 7728 5909 4151 2908 2200
08-23 63° 82° 7778 5949 4182 2930 2217
08-24 55° 73° 7821 5982 4204 2945 2226
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-25 52° 71° 7860 6011 4224 2956 2233
08-26 50° 73° 7900 6041 4243 2968 2240
08-27 49° 75° 7940 6071 4263 2980 2247
08-28 58° 81° 7988 6109 4291 3000 2261
08-29 57° 77° 8033 6144 4316 3017 2273
08-30 55° 78° 8077 6178 4340 3033 2285
08-31 54° 76° 8120 6211 4364 3048 2295
09-01 53° 79° 8165 6246 4388 3064 2306
09-02 54° 82° 8210 6281 4414 3082 2319
09-03 53° 83° 8256 6317 4440 3100 2332
09-04 50° 70° 8294 6345 4457 3110 2337
09-05 53° 70° 8334 6375 4477 3121 2343
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-06 47° 70° 8371 6402 4494 3130 2347
09-07 44° 70° 8406 6427 4509 3137 2349
09-08 44° 73° 8442 6453 4525 3145 2352
09-09 45° 78° 8481 6482 4544 3157 2359
09-10 55° 85° 8529 6520 4572 3177 2374
09-11 59° 86° 8579 6560 4603 3199 2391
09-12 57° 88° 8630 6601 4633 3222 2409
09-13 64° 93° 8686 6647 4669 3250 2432
09-14 65° 93° 8743 6694 4706 3279 2456
09-15 61° 90° 8797 6738 4740 3305 2477
09-16 60° 89° 8849 6780 4772 3329 2496
09-17 53° 88° 8898 6819 4801 3350 2512
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-18 57° 92° 8950 6861 4833 3374 2531
09-19 61° 87° 9002 6903 4865 3398 2550
09-20 62° 84° 9053 6944 4896 3421 2568
09-21 62° 85° 9105 6986 4928 3444 2586
09-22 66° 79° 9155 7026 4958 3467 2604
09-23 62° 83° 9206 7067 4989 3490 2622
09-24 64° 77° 9255 7106 5018 3510 2637
09-25 56° 77° 9299 7140 5042 3527 2649
09-26 49° 83° 9343 7174 5066 3543 2660
09-27 53° 87° 9391 7212 5094 3563 2675
09-28 57° 89° 9442 7253 5125 3586 2693
09-29 58° 91° 9495 7296 5158 3610 2712
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-30 62° 87° 9547 7338 5190 3635 2732
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-15 34° 48° 19 9 0 0 0
02-16 20° 33° 23 9 0 0 0
02-17 7° 21° 23 9 0 0 0
02-18 16° 34° 27 9 0 0 0
02-19 16° 47° 36 9 0 0 0
02-20 29° 57° 57 20 1 0 0
02-21 38° 66° 87 40 11 2 0
02-22 44° 59° 117 59 20 3 0
02-23 34° 54° 139 71 22 3 0
02-24 26° 37° 148 71 22 3 0
02-25 30° 62° 172 85 26 3 0
02-26 35° 74° 205 108 39 8 0
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 55° 75° 248 141 62 23 10
02-28 22° 58° 267 150 62 23 10
02-29 19° 46° 277 150 62 23 10
03-01 27° 44° 291 153 62 23 10
03-02 34° 59° 315 168 67 23 10
03-03 41° 72° 349 192 81 30 12
03-04 53° 73° 390 223 102 43 19
03-05 43° 63° 421 244 113 45 19
03-06 41° 51° 445 258 117 45 19
03-07 43° 55° 472 275 123 45 19
03-08 46° 57° 502 294 133 47 19
03-09 36° 47° 521 304 133 47 19
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-10 30° 47° 537 310 133 47 19
03-11 30° 64° 563 325 138 47 19
03-12 41° 70° 596 349 152 53 20
03-13 46° 74° 634 377 170 63 25
03-14 48° 73° 673 406 189 74 31
03-15 43° 58° 701 424 197 74 31
03-16 38° 63° 729 442 205 74 31
03-17 34° 44° 746 449 205 74 31
03-18 29° 37° 757 450 205 74 31
03-19 24° 61° 778 461 206 74 31
03-20 33° 49° 797 470 206 74 31
03-21 27° 46° 811 474 206 74 31
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-22 32° 61° 836 489 210 74 31
03-23 34° 46° 854 497 210 74 31
03-24 33° 57° 877 510 214 74 31
03-25 48° 63° 911 534 228 80 32
03-26 38° 53° 935 547 231 80 32
03-27 33° 46° 952 555 231 80 32
03-28 27° 60° 974 566 233 80 32
03-29 38° 70° 1005 588 245 84 32
03-30 54° 73° 1047 620 266 97 40
03-31 42° 68° 1080 643 279 102 40
04-01 49° 63° 1114 667 293 108 41
04-02 39° 65° 1144 686 303 110 41
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-03 35° 39° 1159 691 303 110 41
04-04 35° 40° 1174 697 303 110 41
04-05 36° 45° 1193 705 303 110 41
04-06 30° 55° 1214 716 304 110 41
04-07 41° 61° 1243 736 313 111 41
04-08 45° 74° 1280 763 330 121 46
04-09 49° 69° 1317 790 347 130 50
04-10 47° 62° 1350 812 360 134 50
04-11 51° 61° 1384 836 374 140 50
04-12 47° 63° 1417 859 387 145 50
04-13 41° 72° 1451 884 401 151 52
04-14 61° 82° 1500 923 430 172 68
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-15 55° 75° 1543 955 453 187 78
04-16 61° 80° 1591 994 482 208 93
04-17 65° 68° 1636 1029 506 225 105
04-18 47° 72° 1674 1057 524 234 110
04-19 42° 55° 1700 1073 530 234 110
04-20 37° 49° 1721 1084 531 234 110
04-21 34° 47° 1739 1092 531 234 110
04-22 36° 65° 1768 1111 540 235 110
04-23 51° 56° 1799 1132 551 238 110
04-24 39° 52° 1823 1146 555 238 110
04-25 32° 61° 1848 1160 559 238 110
04-26 45° 65° 1881 1183 572 243 110
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-27 59° 75° 1926 1219 598 261 122
04-28 65° 77° 1975 1258 627 282 138
04-29 58° 68° 2016 1289 648 295 146
04-30 47° 78° 2057 1320 669 308 154
05-01 62° 77° 2105 1357 696 327 169
05-02 57° 84° 2153 1396 725 348 184
05-03 60° 73° 2198 1431 750 365 196
05-04 53° 83° 2244 1467 776 383 209
05-05 54° 68° 2283 1496 795 394 215
05-06 55° 76° 2327 1529 818 409 226
05-07 64° 79° 2376 1569 848 431 242
05-08 54° 75° 2419 1602 871 446 252
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-09 55° 66° 2458 1631 890 457 258
05-10 49° 67° 2494 1657 906 465 261
05-11 53° 74° 2536 1688 927 478 270
05-12 49° 82° 2580 1722 951 494 281
05-13 58° 76° 2625 1758 977 512 293
05-14 61° 67° 2667 1789 998 525 302
05-15 56° 72° 2709 1821 1020 539 311
05-16 54° 69° 2748 1850 1039 550 317
05-17 60° 78° 2795 1887 1066 569 331
05-18 62° 83° 2846 1928 1097 592 349
05-19 65° 89° 2901 1973 1132 619 371
05-20 67° 86° 2955 2018 1167 646 392
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-21 67° 89° 3011 2064 1203 674 415
05-22 63° 77° 3059 2102 1231 694 430
05-23 55° 81° 3105 2138 1257 712 443
05-24 64° 75° 3152 2175 1284 731 458
05-25 60° 76° 3198 2211 1310 749 471
05-26 61° 79° 3247 2249 1338 769 486
05-27 59° 77° 3293 2285 1364 787 499
05-28 57° 76° 3337 2320 1389 804 510
05-29 54° 73° 3378 2351 1410 817 519
05-30 50° 78° 3420 2383 1432 831 528
05-31 54° 79° 3465 2418 1457 848 539
06-01 63° 69° 3509 2451 1480 863 550
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-02 63° 73° 3555 2488 1507 882 563
06-03 59° 86° 3606 2529 1538 905 581
06-04 67° 82° 3658 2571 1570 929 601
06-05 67° 79° 3709 2612 1601 952 619
06-06 64° 80° 3759 2652 1631 974 636
06-07 58° 82° 3807 2690 1659 994 651
06-08 63° 80° 3857 2730 1689 1016 667
06-09 55° 80° 3903 2766 1715 1034 680
06-10 56° 72° 3945 2798 1737 1048 689
06-11 48° 78° 3986 2829 1758 1061 697
06-12 61° 88° 4038 2871 1790 1085 717
06-13 68° 90° 4096 2918 1827 1114 741
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-14 69° 86° 4151 2963 1862 1141 763
06-15 60° 86° 4202 3005 1894 1165 781
06-16 67° 92° 4259 3052 1931 1194 805
06-17 75° 93° 4321 3104 1973 1228 834
06-18 73° 87° 4379 3152 2011 1258 859
06-19 74° 91° 4439 3202 2051 1290 887
06-20 72° 90° 4499 3251 2090 1321 913
06-21 70° 90° 4556 3299 2128 1351 938
06-22 72° 90° 4615 3348 2167 1382 964
06-23 73° 85° 4673 3395 2204 1411 988
06-24 65° 86° 4726 3439 2238 1437 1008
06-25 72° 82° 4781 3484 2273 1464 1031
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-26 69° 83° 4836 3528 2307 1490 1052
06-27 64° 81° 4886 3569 2338 1513 1069
06-28 66° 85° 4939 3612 2371 1538 1090
06-29 78° 89° 5001 3663 2412 1571 1118
06-30 61° 77° 5048 3700 2439 1590 1132
07-01 51° 76° 5089 3732 2461 1604 1141
07-02 59° 85° 5139 3772 2491 1626 1158
07-03 73° 84° 5196 3819 2528 1655 1181
07-04 69° 76° 5247 3859 2558 1677 1199
07-05 66° 82° 5299 3901 2590 1701 1218
07-06 63° 82° 5349 3942 2621 1724 1236
07-07 63° 85° 5402 3984 2653 1748 1255
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-08 70° 84° 5457 4029 2688 1775 1277
07-09 67° 74° 5505 4068 2717 1796 1293
07-10 65° 82° 5557 4110 2749 1820 1311
07-11 65° 82° 5609 4151 2780 1843 1330
07-12 66° 84° 5661 4194 2813 1868 1350
07-13 69° 88° 5717 4240 2849 1896 1373
07-14 74° 89° 5777 4290 2889 1928 1399
07-15 69° 91° 5835 4338 2927 1958 1424
07-16 69° 79° 5887 4380 2959 1982 1443
07-17 68° 82° 5940 4422 2991 2006 1463
07-18 59° 75° 5984 4457 3016 2023 1475
07-19 54° 76° 6028 4490 3039 2038 1485
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-20 59° 78° 6074 4527 3066 2057 1498
07-21 65° 79° 6124 4567 3096 2079 1515
07-22 63° 82° 6175 4607 3126 2101 1533
07-23 63° 82° 6225 4648 3157 2124 1551
07-24 66° 82° 6278 4690 3189 2148 1570
07-25 65° 80° 6328 4731 3220 2171 1588
07-26 58° 79° 6375 4767 3246 2189 1601
07-27 59° 82° 6423 4806 3275 2210 1616
07-28 70° 82° 6477 4850 3309 2236 1638
07-29 69° 83° 6531 4894 3343 2262 1658
07-30 67° 86° 6586 4938 3377 2288 1680
07-31 68° 83° 6640 4982 3411 2314 1701
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-01 71° 85° 6696 5028 3447 2342 1724
08-02 70° 82° 6750 5072 3481 2368 1745
08-03 69° 88° 6806 5118 3517 2396 1768
08-04 71° 87° 6863 5165 3554 2425 1792
08-05 71° 90° 6921 5214 3593 2456 1817
08-06 69° 88° 6978 5261 3630 2485 1841
08-07 66° 76° 7027 5300 3659 2506 1857
08-08 63° 81° 7077 5340 3689 2528 1874
08-09 60° 73° 7121 5374 3713 2544 1886
08-10 54° 74° 7164 5406 3735 2558 1895
08-11 55° 77° 7208 5440 3759 2574 1906
08-12 56° 77° 7252 5475 3784 2591 1917
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-13 60° 80° 7300 5513 3812 2611 1933
08-14 60° 82° 7349 5552 3841 2632 1948
08-15 68° 79° 7401 5593 3872 2655 1967
08-16 68° 85° 7455 5638 3907 2682 1989
08-17 68° 78° 7507 5679 3938 2705 2007
08-18 68° 79° 7558 5721 3970 2729 2025
08-19 62° 76° 7605 5758 3997 2748 2039
08-20 56° 72° 7647 5789 4018 2761 2048
08-21 52° 72° 7686 5819 4038 2773 2055
08-22 51° 75° 7727 5850 4059 2786 2062
08-23 52° 81° 7771 5884 4083 2802 2074
08-24 64° 87° 7825 5928 4117 2828 2094
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-25 67° 88° 7880 5973 4152 2855 2117
08-26 70° 90° 7939 6021 4190 2885 2142
08-27 71° 93° 7999 6071 4230 2917 2169
08-28 70° 83° 8053 6116 4265 2944 2190
08-29 68° 88° 8110 6162 4301 2972 2214
08-30 72° 92° 8169 6212 4341 3004 2240
08-31 65° 80° 8220 6252 4371 3026 2258
09-01 59° 80° 8267 6290 4399 3046 2272
09-02 54° 73° 8309 6322 4421 3060 2281
09-03 51° 74° 8349 6352 4441 3072 2289
09-04 51° 82° 8394 6387 4466 3089 2300
09-05 64° 86° 8447 6430 4499 3114 2320
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-06 60° 75° 8492 6465 4524 3131 2332
09-07 50° 66° 8528 6491 4540 3139 2336
09-08 43° 68° 8562 6515 4554 3145 2336
09-09 45° 76° 8601 6543 4572 3155 2342
09-10 48° 81° 8643 6576 4595 3170 2351
09-11 52° 85° 8689 6612 4621 3188 2365
09-12 55° 86° 8738 6651 4650 3209 2380
09-13 60° 77° 8785 6688 4677 3228 2394
09-14 64° 88° 8839 6732 4711 3254 2415
09-15 62° 86° 8891 6774 4743 3278 2434
09-16 59° 87° 8942 6815 4774 3301 2452
09-17 55° 86° 8991 6853 4802 3321 2468
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-18 55° 87° 9040 6892 4831 3342 2484
09-19 57° 89° 9090 6933 4862 3365 2502
09-20 65° 89° 9145 6978 4897 3392 2523
09-21 56° 90° 9196 7019 4928 3415 2541
09-22 66° 74° 9244 7057 4956 3435 2557
09-23 64° 67° 9288 7090 4979 3450 2567
09-24 61° 70° 9331 7124 5003 3466 2578
09-25 54° 75° 9374 7157 5026 3481 2587
09-26 55° 78° 9419 7191 5050 3497 2599
09-27 62° 70° 9463 7226 5075 3514 2610
09-28 61° 74° 9509 7261 5100 3531 2623
09-29 66° 77° 9558 7301 5130 3553 2640
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-30 63° 74° 9605 7338 5157 3572 2653

 

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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