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Bluegrass Billbug Activity - OSU (GDD 50)
forecast for Sat, Dec. 20. 2025

 
  

Bloomington, IN

        

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 33° 44° 17 7 0 0 0
02-16 20° 40° 24 7 0 0 0
02-17 6° 20° 24 7 0 0 0
02-18 10° 19° 24 7 0 0 0
02-19 13° 21° 24 7 0 0 0
02-20 5° 18° 24 7 0 0 0
02-21 8° 29° 24 7 0 0 0
02-22 13° 35° 26 7 0 0 0
02-23 21° 45° 37 8 0 0 0
02-24 32° 53° 58 19 1 0 0
02-25 38° 62° 86 36 8 0 0
02-26 34° 66° 114 54 17 0 0
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 43° 57° 142 72 25 0 0
02-28 33° 65° 169 89 32 0 0
02-29 n/a n/a n/a n/a n/a n/a n/a
03-01 21° 51° 183 94 32 0 0
03-02 15° 38° 187 94 32 0 0
03-03 25° 53° 205 101 32 0 0
03-04 45° 65° 238 124 45 5 0
03-05 32° 56° 260 136 47 5 0
03-06 31° 42° 274 141 47 5 0
03-07 33° 50° 294 150 47 5 0
03-08 33° 50° 314 160 47 5 0
03-09 31° 58° 337 173 50 5 0
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-10 33° 66° 364 190 57 5 0
03-11 49° 73° 403 220 76 16 6
03-12 41° 75° 439 246 93 24 9
03-13 43° 77° 477 274 110 34 14
03-14 52° 79° 521 307 134 50 25
03-15 58° 71° 563 339 156 64 34
03-16 33° 58° 587 353 160 64 34
03-17 29° 51° 605 361 160 64 34
03-18 41° 75° 640 387 176 72 37
03-19 55° 66° 679 415 194 82 42
03-20 34° 50° 699 425 195 82 42
03-21 29° 54° 718 435 195 82 42
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-22 40° 53° 743 449 199 82 42
03-23 37° 47° 763 459 199 82 42
03-24 37° 53° 786 472 202 82 42
03-25 40° 48° 808 484 204 82 42
03-26 32° 56° 830 496 206 82 42
03-27 41° 56° 856 513 213 82 42
03-28 53° 80° 901 547 237 99 54
03-29 63° 73° 947 583 263 117 67
03-30 57° 72° 990 616 286 132 77
03-31 39° 57° 1016 632 292 132 77
04-01 31° 56° 1037 643 293 132 77
04-02 48° 81° 1080 676 316 147 86
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-03 51° 66° 1116 703 333 155 90
04-04 50° 57° 1148 724 344 159 90
04-05 46° 60° 1179 745 355 162 90
04-06 39° 46° 1199 756 356 162 90
04-07 33° 57° 1222 769 359 162 90
04-08 27° 45° 1236 772 359 162 90
04-09 32° 55° 1257 784 360 162 90
04-10 41° 68° 1290 806 372 166 90
04-11 40° 52° 1314 820 377 166 90
04-12 31° 59° 1337 833 380 166 90
04-13 44° 68° 1371 858 394 173 91
04-14 57° 72° 1414 890 417 187 101
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-15 47° 56° 1444 910 426 189 101
04-16 39° 62° 1472 928 435 189 101
04-17 43° 64° 1504 950 446 193 101
04-18 59° 80° 1551 987 474 212 115
04-19 58° 75° 1596 1022 498 229 126
04-20 54° 81° 1641 1057 523 246 139
04-21 52° 71° 1680 1087 543 258 145
04-22 42° 74° 1716 1113 559 266 148
04-23 49° 78° 1758 1144 581 279 157
04-24 53° 81° 1803 1180 606 296 169
04-25 61° 72° 1848 1214 630 313 181
04-26 47° 63° 1881 1237 643 318 181
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-27 44° 68° 1915 1261 658 324 182
04-28 54° 82° 1962 1298 684 343 195
04-29 63° 80° 2011 1337 713 364 211
04-30 53° 75° 2053 1369 735 378 221
05-01 63° 73° 2099 1406 762 396 234
05-02 59° 71° 2142 1439 785 411 244
05-03 53° 63° 2178 1464 801 419 247
05-04 48° 52° 2206 1482 808 419 247
05-05 49° 58° 2237 1503 820 422 247
05-06 45° 69° 2272 1528 835 429 249
05-07 51° 74° 2313 1559 855 442 256
05-08 57° 71° 2355 1591 878 456 266
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-09 44° 69° 2390 1616 892 463 267
05-10 44° 75° 2427 1643 909 472 271
05-11 51° 82° 2472 1678 934 489 283
05-12 64° 76° 2520 1716 962 509 298
05-13 63° 75° 2567 1753 989 528 312
05-14 61° 81° 2616 1792 1018 549 328
05-15 66° 85° 2669 1836 1052 575 349
05-16 66° 83° 2722 1878 1084 599 368
05-17 62° 71° 2766 1913 1109 616 380
05-18 53° 76° 2809 1945 1131 630 389
05-19 54° 79° 2853 1980 1156 647 401
05-20 59° 77° 2899 2016 1182 665 414
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-21 58° 66° 2939 2046 1202 677 421
05-22 52° 57° 2972 2068 1215 681 421
05-23 42° 67° 3005 2091 1227 686 421
05-24 50° 71° 3043 2120 1246 697 427
05-25 54° 66° 3081 2148 1264 707 431
05-26 51° 71° 3121 2177 1283 718 438
05-27 60° 67° 3162 2208 1305 731 446
05-28 59° 72° 3206 2242 1328 747 457
05-29 56° 72° 3248 2274 1350 761 466
05-30 58° 73° 3291 2308 1374 777 476
05-31 60° 74° 3337 2343 1399 794 489
06-01 49° 74° 3376 2372 1419 805 495
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-02 50° 79° 3419 2405 1441 820 505
06-03 60° 85° 3469 2446 1472 843 522
06-04 68° 85° 3524 2490 1506 869 544
06-05 69° 81° 3577 2533 1539 894 564
06-06 69° 79° 3628 2575 1571 918 582
06-07 68° 76° 3678 2614 1600 939 599
06-08 66° 79° 3729 2655 1631 962 617
06-09 62° 78° 3776 2693 1659 982 631
06-10 57° 76° 3821 2727 1684 998 643
06-11 56° 82° 3869 2765 1711 1018 658
06-12 62° 83° 3919 2805 1741 1040 675
06-13 70° 79° 3971 2848 1774 1065 694
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-14 70° 79° 4024 2890 1807 1089 714
06-15 69° 79° 4076 2932 1839 1113 733
06-16 67° 82° 4128 2975 1871 1138 752
06-17 71° 82° 4183 3019 1905 1164 774
06-18 71° 85° 4239 3065 1941 1192 797
06-19 68° 81° 4291 3108 1974 1217 817
06-20 65° 83° 4344 3150 2006 1241 836
06-21 70° 90° 4402 3198 2044 1271 861
06-22 75° 91° 4463 3249 2085 1304 889
06-23 74° 92° 4524 3300 2126 1337 917
06-24 75° 92° 4585 3351 2168 1370 945
06-25 74° 91° 4646 3402 2208 1403 973
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-26 76° 92° 4708 3454 2250 1437 1002
06-27 76° 91° 4769 3505 2291 1470 1030
06-28 72° 90° 4828 3554 2330 1501 1056
06-29 73° 82° 4883 3600 2366 1529 1079
06-30 72° 86° 4941 3647 2403 1558 1103
07-01 72° 85° 4997 3693 2440 1586 1126
07-02 66° 84° 5050 3736 2473 1611 1146
07-03 68° 87° 5105 3782 2508 1639 1168
07-04 68° 88° 5161 3828 2544 1667 1191
07-05 69° 90° 5219 3875 2581 1696 1216
07-06 72° 87° 5276 3923 2619 1726 1241
07-07 71° 79° 5329 3966 2652 1751 1261
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-08 64° 85° 5382 4008 2684 1775 1280
07-09 70° 84° 5436 4053 2719 1802 1301
07-10 69° 87° 5492 4098 2755 1829 1324
07-11 69° 89° 5549 4145 2792 1858 1348
07-12 72° 87° 5607 4193 2829 1888 1373
07-13 70° 87° 5664 4240 2866 1917 1397
07-14 71° 86° 5720 4286 2902 1945 1420
07-15 73° 82° 5775 4332 2938 1973 1442
07-16 73° 87° 5833 4380 2976 2003 1467
07-17 70° 87° 5890 4426 3013 2031 1491
07-18 71° 86° 5946 4473 3049 2060 1515
07-19 71° 82° 6001 4517 3084 2086 1536
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-20 71° 86° 6058 4564 3120 2115 1560
07-21 74° 83° 6114 4610 3157 2143 1583
07-22 68° 84° 6168 4655 3191 2170 1604
07-23 71° 88° 6226 4702 3228 2199 1629
07-24 75° 90° 6286 4753 3269 2232 1656
07-25 76° 89° 6347 4803 3309 2264 1684
07-26 75° 89° 6407 4853 3350 2296 1711
07-27 72° 87° 6465 4901 3387 2326 1736
07-28 71° 90° 6524 4950 3426 2357 1762
07-29 72° 91° 6583 4999 3465 2388 1788
07-30 71° 89° 6641 5047 3503 2418 1813
07-31 68° 78° 6692 5088 3535 2441 1831
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-01 63° 76° 6739 5126 3562 2461 1846
08-02 58° 76° 6785 5161 3587 2478 1858
08-03 58° 80° 6832 5198 3614 2497 1872
08-04 67° 80° 6883 5239 3646 2520 1890
08-05 67° 83° 6936 5282 3678 2545 1910
08-06 67° 85° 6990 5326 3712 2571 1931
08-07 67° 87° 7045 5371 3747 2598 1953
08-08 67° 87° 7100 5416 3782 2625 1975
08-09 69° 88° 7156 5462 3819 2653 1998
08-10 69° 88° 7213 5509 3856 2682 2022
08-11 69° 89° 7270 5556 3893 2711 2046
08-12 70° 85° 7326 5602 3928 2739 2069
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-13 68° 86° 7381 5647 3964 2766 2091
08-14 68° 87° 7437 5693 3999 2794 2114
08-15 68° 90° 7494 5740 4036 2823 2138
08-16 71° 89° 7552 5788 4074 2853 2163
08-17 71° 88° 7609 5836 4112 2883 2187
08-18 71° 88° 7667 5883 4150 2912 2212
08-19 72° 89° 7725 5932 4188 2943 2238
08-20 68° 77° 7776 5972 4218 2965 2255
08-21 67° 78° 7826 6013 4249 2988 2273
08-22 68° 77° 7877 6053 4279 3010 2290
08-23 64° 79° 7926 6092 4309 3031 2306
08-24 60° 74° 7971 6128 4334 3049 2318
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-25 54° 71° 8012 6158 4355 3061 2326
08-26 50° 72° 8051 6187 4374 3072 2332
08-27 48° 75° 8091 6217 4393 3084 2339
08-28 52° 77° 8134 6250 4416 3099 2349
08-29 55° 78° 8178 6284 4441 3115 2360
08-30 50° 78° 8220 6317 4463 3130 2369
08-31 52° 77° 8263 6349 4485 3144 2379
09-01 51° 82° 8307 6384 4510 3161 2391
09-02 53° 83° 8354 6420 4536 3179 2404
09-03 55° 81° 8399 6456 4562 3197 2416
09-04 55° 70° 8440 6487 4583 3210 2424
09-05 52° 73° 8481 6517 4604 3222 2432
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-06 53° 71° 8521 6547 4624 3234 2439
09-07 48° 71° 8559 6575 4641 3244 2444
09-08 44° 74° 8596 6602 4659 3253 2448
09-09 46° 79° 8637 6633 4679 3266 2456
09-10 54° 82° 8683 6669 4705 3284 2469
09-11 57° 86° 8732 6708 4734 3305 2485
09-12 55° 86° 8781 6747 4763 3326 2501
09-13 57° 85° 8830 6786 4792 3347 2517
09-14 66° 87° 8884 6830 4826 3373 2538
09-15 61° 88° 8937 6873 4859 3398 2558
09-16 59° 88° 8988 6915 4891 3422 2576
09-17 57° 87° 9038 6955 4921 3444 2593
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-18 58° 88° 9090 6996 4952 3467 2612
09-19 58° 88° 9141 7037 4983 3490 2630
09-20 61° 88° 9193 7079 5015 3514 2649
09-21 65° 83° 9245 7121 5047 3538 2668
09-22 66° 71° 9291 7158 5074 3557 2681
09-23 66° 79° 9342 7198 5104 3579 2699
09-24 66° 77° 9391 7238 5134 3601 2715
09-25 61° 75° 9437 7274 5160 3619 2728
09-26 54° 78° 9481 7308 5184 3635 2739
09-27 55° 82° 9528 7344 5210 3653 2753
09-28 57° 87° 9578 7384 5240 3675 2770
09-29 58° 87° 9628 7425 5271 3698 2787
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-30 59° 84° 9678 7464 5301 3719 2804
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-15 34° 53° 22 12 2 0 0
02-16 24° 37° 30 12 2 0 0
02-17 11° 25° 30 12 2 0 0
02-18 13° 36° 32 12 2 0 0
02-19 18° 49° 44 13 2 0 0
02-20 26° 58° 64 23 2 0 0
02-21 34° 66° 92 41 9 0 0
02-22 44° 59° 121 61 19 2 0
02-23 37° 53° 144 73 22 2 0
02-24 28° 44° 158 78 22 2 0
02-25 28° 59° 180 89 23 2 0
02-26 36° 73° 212 111 36 6 0
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 60° 69° 255 144 58 21 10
02-28 28° 71° 282 162 66 21 10
02-29 23° 45° 294 164 66 21 10
03-01 31° 43° 309 169 66 21 10
03-02 39° 48° 331 180 67 21 10
03-03 37° 71° 363 202 79 24 10
03-04 55° 77° 407 236 103 41 21
03-05 59° 68° 448 268 125 54 29
03-06 47° 58° 479 288 135 57 29
03-07 46° 54° 507 306 143 57 29
03-08 49° 58° 538 327 155 60 29
03-09 39° 56° 563 343 160 60 29
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-10 31° 47° 580 350 160 60 29
03-11 27° 60° 602 361 161 60 29
03-12 43° 68° 635 385 175 66 30
03-13 45° 74° 673 413 193 76 35
03-14 55° 74° 716 445 215 90 44
03-15 45° 59° 746 465 225 92 44
03-16 35° 63° 773 482 232 92 44
03-17 36° 53° 795 495 235 92 44
03-18 29° 34° 805 495 235 92 44
03-19 27° 55° 824 504 235 92 44
03-20 38° 53° 848 517 239 92 44
03-21 26° 47° 863 522 239 92 44
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-22 34° 50° 882 532 239 92 44
03-23 33° 48° 901 540 239 92 44
03-24 31° 56° 923 552 241 92 44
03-25 49° 68° 959 579 257 100 48
03-26 43° 64° 991 601 269 104 48
03-27 36° 49° 1012 611 269 104 48
03-28 28° 59° 1033 623 271 104 48
03-29 44° 70° 1069 648 286 112 50
03-30 51° 76° 1110 680 308 125 59
03-31 50° 72° 1149 709 327 136 65
04-01 60° 75° 1194 744 352 154 77
04-02 45° 68° 1229 768 366 160 78
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-03 37° 43° 1246 776 366 160 78
04-04 35° 41° 1263 782 366 160 78
04-05 37° 46° 1282 792 366 160 78
04-06 31° 57° 1304 804 368 160 78
04-07 40° 65° 1335 825 379 163 78
04-08 47° 75° 1374 854 398 174 84
04-09 58° 68° 1415 884 419 186 92
04-10 56° 61° 1452 911 436 195 96
04-11 52° 61° 1486 936 450 202 97
04-12 45° 59° 1516 956 460 204 97
04-13 44° 67° 1550 979 474 209 98
04-14 57° 80° 1596 1016 500 228 111
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-15 62° 76° 1643 1053 527 247 125
04-16 64° 73° 1689 1089 553 265 138
04-17 65° 76° 1738 1127 582 285 154
04-18 52° 79° 1782 1161 606 301 164
04-19 50° 63° 1816 1186 620 307 166
04-20 43° 53° 1842 1202 626 307 166
04-21 36° 46° 1861 1211 626 307 166
04-22 34° 63° 1888 1228 633 307 166
04-23 48° 66° 1923 1253 648 315 168
04-24 45° 59° 1953 1273 658 317 168
04-25 35° 61° 1979 1289 664 317 168
04-26 46° 71° 2016 1315 681 325 172
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-27 65° 78° 2065 1355 710 347 188
04-28 67° 80° 2116 1396 741 370 206
04-29 63° 75° 2163 1433 768 388 220
04-30 59° 76° 2209 1468 794 406 232
05-01 57° 79° 2255 1504 820 424 245
05-02 61° 86° 2306 1546 851 448 264
05-03 64° 73° 2353 1582 878 466 277
05-04 61° 80° 2401 1621 906 487 293
05-05 61° 76° 2448 1657 933 505 307
05-06 62° 75° 2494 1694 959 524 320
05-07 62° 78° 2543 1732 988 544 335
05-08 61° 82° 2592 1771 1017 565 352
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-09 61° 76° 2638 1808 1043 583 365
05-10 52° 68° 2676 1835 1061 593 369
05-11 54° 72° 2717 1866 1082 606 377
05-12 46° 79° 2757 1897 1102 619 385
05-13 55° 79° 2803 1932 1128 636 397
05-14 61° 65° 2844 1963 1149 649 405
05-15 62° 73° 2889 1999 1174 666 418
05-16 57° 74° 2933 2032 1198 682 428
05-17 63° 73° 2979 2069 1224 701 442
05-18 60° 81° 3027 2107 1252 721 457
05-19 61° 85° 3078 2148 1283 744 475
05-20 63° 85° 3130 2190 1315 767 494
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-21 65° 86° 3183 2233 1348 793 514
05-22 67° 81° 3236 2275 1381 817 533
05-23 61° 77° 3283 2313 1408 836 548
05-24 61° 82° 3333 2352 1438 858 564
05-25 63° 80° 3382 2392 1467 879 581
05-26 63° 76° 3429 2429 1494 899 595
05-27 62° 74° 3475 2465 1520 917 608
05-28 59° 75° 3520 2500 1545 933 620
05-29 55° 72° 3561 2531 1566 947 628
05-30 52° 75° 3603 2562 1588 960 637
05-31 55° 78° 3647 2597 1612 977 648
06-01 62° 70° 3691 2631 1636 993 659
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-02 64° 77° 3740 2669 1665 1013 675
06-03 62° 84° 3791 2710 1696 1036 693
06-04 64° 85° 3843 2753 1728 1061 712
06-05 69° 80° 3896 2796 1761 1086 732
06-06 64° 81° 3947 2836 1792 1108 750
06-07 58° 82° 3995 2874 1820 1128 764
06-08 58° 75° 4039 2909 1844 1145 776
06-09 60° 79° 4087 2947 1872 1164 791
06-10 56° 66° 4126 2975 1891 1175 797
06-11 44° 75° 4163 3003 1908 1185 801
06-12 53° 84° 4210 3040 1935 1204 815
06-13 59° 88° 4262 3081 1967 1227 834
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-14 67° 89° 4318 3127 2003 1255 857
06-15 63° 86° 4370 3170 2035 1280 876
06-16 63° 93° 4426 3216 2071 1308 899
06-17 74° 93° 4488 3267 2113 1341 927
06-18 72° 87° 4545 3315 2150 1371 952
06-19 74° 90° 4605 3365 2190 1403 979
06-20 68° 91° 4663 3413 2228 1432 1004
06-21 69° 91° 4721 3461 2266 1462 1029
06-22 71° 92° 4780 3510 2305 1494 1055
06-23 73° 87° 4838 3558 2343 1524 1080
06-24 65° 87° 4892 3601 2377 1549 1101
06-25 69° 89° 4949 3648 2414 1578 1124
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-26 68° 81° 5001 3690 2446 1602 1144
06-27 62° 84° 5052 3732 2477 1625 1162
06-28 67° 89° 5108 3778 2513 1654 1185
06-29 79° 89° 5170 3829 2555 1687 1214
06-30 66° 79° 5220 3870 2585 1710 1231
07-01 55° 77° 5265 3904 2610 1726 1242
07-02 57° 88° 5315 3945 2640 1749 1260
07-03 72° 87° 5373 3992 2678 1778 1285
07-04 73° 86° 5430 4040 2715 1808 1309
07-05 69° 84° 5485 4084 2750 1834 1330
07-06 64° 82° 5536 4125 2781 1857 1348
07-07 63° 86° 5588 4168 2813 1882 1368
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-08 66° 88° 5644 4213 2849 1909 1390
07-09 73° 81° 5699 4258 2884 1936 1413
07-10 66° 82° 5751 4300 2916 1960 1431
07-11 66° 85° 5804 4344 2949 1986 1452
07-12 68° 86° 5860 4389 2985 2013 1474
07-13 68° 88° 5916 4435 3021 2041 1497
07-14 71° 90° 5974 4484 3059 2072 1523
07-15 74° 92° 6035 4535 3100 2105 1551
07-16 68° 82° 6088 4578 3133 2130 1571
07-17 72° 83° 6144 4624 3169 2157 1594
07-18 61° 77° 6191 4661 3196 2177 1608
07-19 57° 81° 6239 4698 3224 2196 1622
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-20 59° 84° 6288 4738 3253 2218 1639
07-21 66° 81° 6340 4779 3285 2241 1657
07-22 65° 83° 6392 4822 3317 2266 1677
07-23 62° 86° 6444 4864 3349 2289 1696
07-24 67° 86° 6499 4908 3384 2316 1718
07-25 65° 86° 6552 4952 3417 2342 1738
07-26 63° 86° 6605 4994 3450 2366 1757
07-27 60° 87° 6657 5036 3482 2390 1776
07-28 71° 82° 6711 5081 3516 2416 1798
07-29 71° 87° 6768 5127 3553 2445 1822
07-30 70° 88° 6825 5174 3590 2474 1846
07-31 70° 87° 6881 5221 3626 2503 1869
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-01 70° 87° 6938 5268 3663 2532 1893
08-02 70° 83° 6993 5312 3698 2558 1915
08-03 67° 87° 7048 5358 3733 2586 1937
08-04 66° 90° 7105 5404 3770 2614 1960
08-05 68° 91° 7162 5452 3807 2644 1985
08-06 70° 92° 7221 5501 3846 2675 2011
08-07 70° 82° 7275 5545 3880 2701 2032
08-08 64° 83° 7326 5586 3911 2724 2050
08-09 65° 80° 7377 5627 3942 2747 2068
08-10 54° 77° 7421 5661 3966 2763 2079
08-11 56° 77° 7466 5695 3991 2779 2091
08-12 55° 80° 7512 5731 4017 2797 2103
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-13 64° 83° 7563 5773 4048 2821 2122
08-14 60° 86° 7614 5814 4079 2844 2140
08-15 65° 87° 7668 5858 4113 2870 2161
08-16 73° 84° 7725 5905 4150 2898 2185
08-17 72° 85° 7782 5951 4187 2927 2208
08-18 67° 80° 7833 5993 4218 2950 2227
08-19 65° 78° 7883 6032 4248 2972 2243
08-20 56° 73° 7925 6065 4270 2987 2253
08-21 51° 74° 7966 6095 4291 2999 2260
08-22 50° 78° 8007 6127 4312 3013 2269
08-23 52° 85° 8054 6163 4339 3031 2282
08-24 64° 90° 8108 6208 4373 3058 2304
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-25 65° 91° 8165 6254 4410 3086 2327
08-26 66° 93° 8222 6301 4447 3115 2352
08-27 69° 95° 8282 6352 4487 3147 2379
08-28 70° 92° 8341 6401 4526 3179 2405
08-29 72° 94° 8402 6452 4567 3212 2433
08-30 70° 96° 8463 6503 4608 3245 2461
08-31 72° 85° 8520 6549 4645 3273 2484
09-01 62° 86° 8572 6591 4677 3297 2504
09-02 58° 78° 8618 6628 4703 3316 2517
09-03 54° 77° 8662 6661 4727 3331 2527
09-04 56° 86° 8711 6701 4756 3353 2544
09-05 63° 90° 8765 6745 4790 3379 2565
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-06 65° 85° 8818 6788 4823 3404 2585
09-07 50° 70° 8856 6816 4841 3414 2590
09-08 42° 70° 8890 6840 4855 3420 2591
09-09 42° 79° 8929 6868 4874 3430 2597
09-10 48° 86° 8974 6903 4899 3447 2609
09-11 52° 87° 9022 6941 4927 3467 2623
09-12 56° 88° 9071 6981 4956 3489 2640
09-13 67° 77° 9121 7021 4986 3511 2657
09-14 68° 89° 9178 7068 5023 3540 2681
09-15 62° 88° 9231 7111 5056 3565 2701
09-16 58° 88° 9282 7152 5087 3588 2719
09-17 56° 88° 9332 7192 5117 3610 2736
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-18 56° 88° 9383 7232 5148 3632 2753
09-19 62° 92° 9437 7277 5182 3659 2775
09-20 61° 91° 9491 7321 5216 3685 2796
09-21 68° 93° 9549 7369 5254 3715 2821
09-22 65° 78° 9599 7408 5284 3736 2838
09-23 66° 75° 9647 7447 5312 3757 2853
09-24 67° 77° 9697 7487 5342 3779 2870
09-25 63° 76° 9745 7524 5370 3798 2884
09-26 59° 80° 9792 7562 5397 3817 2899
09-27 66° 70° 9838 7598 5423 3836 2912
09-28 64° 68° 9882 7632 5447 3852 2923
09-29 66° 70° 9928 7668 5473 3869 2936
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-30 67° 75° 9977 7706 5502 3890 2952

 

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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