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Black Turfgrass Ataenius Egg Laying (GDD 50)
forecast for Sat, Dec. 20. 2025

 
  

Quincy, 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 28° 35° 9 0 0 0 0
02-16 12° 26° 9 0 0 0 0
02-17 8° 17° 9 0 0 0 0
02-18 -0° 10° 9 0 0 0 0
02-19 -0° 14° 9 0 0 0 0
02-20 -5° 21° 9 0 0 0 0
02-21 2° 27° 9 0 0 0 0
02-22 13° 39° 14 0 0 0 0
02-23 27° 58° 34 10 0 0 0
02-24 38° 60° 61 28 8 0 0
02-25 38° 61° 89 45 15 0 0
02-26 45° 64° 122 68 28 5 0
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 37° 56° 146 82 32 5 0
02-28 36° 70° 177 104 44 8 0
02-29 n/a n/a n/a n/a n/a n/a n/a
03-01 22° 42° 187 104 44 8 0
03-02 17° 44° 196 104 44 8 0
03-03 34° 63° 223 121 51 8 0
03-04 48° 57° 253 141 61 10 0
03-05 31° 50° 272 150 61 10 0
03-06 26° 46° 285 153 61 10 0
03-07 37° 59° 312 170 68 10 0
03-08 26° 54° 329 177 68 10 0
03-09 30° 63° 354 192 72 10 0
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-10 39° 73° 388 216 86 16 1
03-11 49° 72° 426 244 104 27 6
03-12 35° 72° 458 266 116 30 6
03-13 45° 78° 497 295 135 42 13
03-14 54° 83° 543 331 162 60 26
03-15 41° 57° 570 348 168 60 26
03-16 29° 47° 586 354 168 60 26
03-17 28° 69° 613 371 175 60 26
03-18 53° 80° 658 406 200 77 38
03-19 35° 69° 688 426 210 79 38
03-20 31° 47° 705 433 210 79 38
03-21 34° 64° 732 450 217 79 38
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-22 32° 58° 755 463 220 79 38
03-23 44° 57° 784 482 229 79 38
03-24 35° 55° 807 495 232 79 38
03-25 39° 57° 833 511 238 79 38
03-26 34° 61° 858 526 243 79 38
03-27 46° 53° 886 544 251 79 38
03-28 53° 78° 929 577 274 95 48
03-29 60° 71° 973 610 297 110 59
03-30 43° 64° 1004 632 309 113 59
03-31 36° 54° 1027 645 312 113 59
04-01 35° 52° 1048 656 313 113 59
04-02 52° 73° 1089 687 334 126 66
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-03 46° 56° 1118 706 343 127 66
04-04 42° 49° 1142 719 346 127 66
04-05 40° 46° 1163 731 348 127 66
04-06 34° 53° 1185 742 349 127 66
04-07 36° 51° 1206 754 351 127 66
04-08 29° 52° 1224 762 351 127 66
04-09 43° 67° 1257 785 364 132 66
04-10 40° 65° 1288 806 375 135 66
04-11 42° 56° 1315 823 382 135 66
04-12 39° 63° 1345 842 391 136 66
04-13 53° 82° 1390 878 417 154 79
04-14 54° 68° 1429 907 436 165 85
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-15 44° 61° 1459 927 446 167 85
04-16 38° 72° 1492 950 459 172 85
04-17 57° 77° 1538 985 484 189 97
04-18 60° 76° 1584 1021 510 207 110
04-19 49° 59° 1616 1043 522 211 110
04-20 51° 69° 1654 1072 540 221 116
04-21 50° 65° 1689 1097 556 229 118
04-22 50° 80° 1732 1130 579 244 128
04-23 58° 79° 1779 1167 605 262 141
04-24 57° 81° 1826 1203 632 281 155
04-25 58° 74° 1870 1238 656 297 167
04-26 53° 65° 1907 1265 673 307 171
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-27 50° 62° 1941 1289 687 312 171
04-28 57° 86° 1990 1328 717 334 188
04-29 55° 77° 2034 1362 741 350 199
04-30 50° 63° 2069 1387 756 357 201
05-01 60° 71° 2112 1420 779 372 211
05-02 51° 67° 2149 1447 796 381 215
05-03 46° 59° 2180 1468 807 384 215
05-04 45° 64° 2213 1491 819 388 215
05-05 48° 61° 2245 1513 832 393 215
05-06 44° 73° 2282 1539 848 401 218
05-07 53° 77° 2325 1573 871 416 229
05-08 53° 74° 2367 1605 893 430 238
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-09 46° 72° 2404 1632 910 439 242
05-10 45° 82° 2446 1664 932 453 251
05-11 51° 80° 2489 1697 956 469 261
05-12 56° 80° 2535 1733 981 487 274
05-13 60° 80° 2583 1771 1009 506 289
05-14 60° 85° 2634 1812 1040 529 307
05-15 69° 89° 2691 1858 1077 558 330
05-16 60° 86° 2742 1899 1108 581 348
05-17 56° 71° 2783 1931 1130 595 357
05-18 49° 76° 2824 1962 1150 607 365
05-19 57° 73° 2867 1995 1173 622 375
05-20 60° 71° 2910 2028 1197 638 385
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-21 53° 66° 2948 2056 1214 648 390
05-22 47° 62° 2980 2078 1227 652 390
05-23 45° 69° 3016 2104 1242 659 392
05-24 55° 73° 3058 2135 1264 673 401
05-25 58° 66° 3097 2165 1284 685 408
05-26 52° 70° 3136 2194 1303 696 414
05-27 57° 73° 3180 2228 1326 711 424
05-28 58° 70° 3222 2259 1348 725 433
05-29 57° 69° 3263 2291 1369 738 441
05-30 53° 79° 3307 2325 1394 755 453
05-31 57° 82° 3355 2363 1421 774 467
06-01 57° 77° 3400 2398 1446 791 479
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-02 57° 86° 3450 2437 1476 813 496
06-03 66° 84° 3503 2480 1509 838 516
06-04 61° 69° 3546 2514 1532 853 526
06-05 58° 75° 3590 2548 1557 870 538
06-06 61° 76° 3636 2584 1583 888 551
06-07 60° 73° 3681 2619 1607 904 562
06-08 58° 80° 3727 2655 1634 923 576
06-09 53° 75° 3770 2688 1656 937 585
06-10 52° 78° 3813 2720 1679 952 595
06-11 60° 86° 3863 2761 1710 975 613
06-12 64° 80° 3914 2801 1740 997 630
06-13 68° 76° 3963 2841 1770 1019 647
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-14 66° 79° 4014 2882 1801 1042 665
06-15 62° 81° 4063 2921 1830 1063 681
06-16 66° 84° 4116 2964 1863 1088 701
06-17 68° 87° 4172 3010 1898 1115 723
06-18 67° 77° 4222 3050 1929 1138 741
06-19 61° 83° 4272 3090 1958 1160 757
06-20 67° 87° 4327 3135 1993 1187 779
06-21 76° 92° 4389 3187 2036 1221 809
06-22 76° 92° 4451 3239 2077 1254 837
06-23 75° 92° 4512 3290 2119 1288 866
06-24 74° 91° 4573 3341 2159 1320 893
06-25 73° 90° 4632 3390 2199 1352 920
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-26 74° 91° 4693 3441 2239 1385 947
06-27 72° 86° 4750 3488 2276 1414 971
06-28 70° 89° 4807 3535 2314 1443 996
06-29 70° 79° 4860 3578 2346 1467 1015
06-30 69° 84° 4914 3622 2381 1494 1037
07-01 65° 82° 4966 3664 2413 1518 1056
07-02 64° 86° 5019 3707 2445 1543 1075
07-03 69° 88° 5075 3753 2482 1571 1099
07-04 69° 89° 5132 3800 2519 1600 1123
07-05 72° 88° 5190 3848 2557 1630 1148
07-06 72° 84° 5246 3894 2593 1658 1171
07-07 69° 87° 5302 3940 2629 1686 1194
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-08 71° 85° 5358 3986 2665 1714 1217
07-09 67° 88° 5413 4031 2700 1741 1239
07-10 69° 90° 5471 4079 2738 1771 1264
07-11 72° 91° 5531 4129 2777 1802 1290
07-12 68° 84° 5584 4172 2811 1828 1311
07-13 71° 78° 5637 4215 2844 1853 1331
07-14 67° 85° 5691 4259 2878 1879 1352
07-15 69° 88° 5747 4305 2914 1907 1375
07-16 72° 87° 5805 4353 2952 1937 1400
07-17 72° 79° 5859 4397 2985 1963 1420
07-18 68° 83° 5913 4441 3019 1988 1441
07-19 71° 85° 5969 4487 3055 2016 1464
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-20 74° 82° 6025 4533 3091 2044 1487
07-21 71° 84° 6081 4579 3127 2072 1510
07-22 73° 91° 6141 4629 3167 2104 1537
07-23 76° 91° 6203 4681 3209 2138 1566
07-24 74° 87° 6261 4729 3248 2169 1592
07-25 72° 86° 6318 4776 3285 2198 1616
07-26 74° 85° 6376 4824 3322 2227 1640
07-27 75° 92° 6437 4875 3363 2260 1668
07-28 75° 91° 6498 4926 3404 2293 1696
07-29 73° 92° 6558 4976 3444 2326 1723
07-30 70° 80° 6611 5019 3477 2350 1743
07-31 66° 77° 6661 5059 3507 2372 1760
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-01 59° 78° 6707 5095 3534 2391 1774
08-02 61° 76° 6754 5132 3560 2409 1787
08-03 57° 76° 6798 5166 3585 2426 1799
08-04 60° 81° 6847 5205 3613 2446 1814
08-05 64° 83° 6898 5246 3644 2470 1832
08-06 66° 87° 6952 5290 3679 2496 1854
08-07 72° 79° 7005 5333 3712 2521 1874
08-08 71° 90° 7064 5382 3750 2552 1899
08-09 76° 89° 7124 5432 3791 2584 1927
08-10 74° 83° 7181 5479 3827 2612 1950
08-11 71° 86° 7237 5525 3864 2641 1974
08-12 69° 86° 7292 5570 3899 2668 1996
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-13 69° 85° 7347 5615 3934 2695 2018
08-14 61° 85° 7398 5656 3965 2718 2036
08-15 70° 93° 7458 5706 4004 2749 2062
08-16 75° 95° 7520 5758 4047 2784 2092
08-17 75° 93° 7583 5810 4089 2818 2121
08-18 73° 93° 7643 5861 4130 2851 2149
08-19 73° 88° 7702 5910 4168 2881 2174
08-20 66° 88° 7756 5954 4203 2908 2196
08-21 62° 79° 7805 5993 4231 2928 2211
08-22 64° 82° 7856 6034 4262 2952 2229
08-23 63° 84° 7908 6076 4294 2975 2248
08-24 54° 76° 7951 6109 4317 2990 2258
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-25 52° 72° 7991 6139 4337 3002 2265
08-26 48° 76° 8031 6168 4357 3014 2272
08-27 51° 79° 8073 6201 4380 3029 2282
08-28 55° 83° 8121 6239 4407 3048 2296
08-29 58° 84° 8170 6278 4436 3069 2312
08-30 63° 83° 8221 6318 4467 3092 2330
08-31 62° 80° 8270 6358 4496 3113 2346
09-01 58° 79° 8316 6394 4523 3132 2360
09-02 55° 81° 8362 6430 4548 3149 2372
09-03 57° 80° 8408 6466 4574 3168 2385
09-04 49° 71° 8446 6494 4592 3178 2390
09-05 55° 65° 8484 6522 4611 3188 2396
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-06 46° 73° 8522 6550 4628 3197 2400
09-07 43° 72° 8557 6575 4644 3205 2403
09-08 49° 76° 8598 6606 4664 3217 2410
09-09 53° 78° 8641 6639 4688 3233 2421
09-10 56° 85° 8690 6678 4716 3253 2436
09-11 60° 87° 8741 6719 4748 3277 2455
09-12 63° 91° 8797 6764 4783 3304 2477
09-13 69° 96° 8857 6815 4824 3337 2505
09-14 70° 96° 8918 6866 4864 3369 2532
09-15 71° 92° 8977 6915 4904 3401 2559
09-16 64° 92° 9033 6961 4939 3429 2581
09-17 62° 91° 9087 7005 4974 3455 2603
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-18 64° 86° 9140 7048 5007 3480 2623
09-19 63° 83° 9191 7089 5038 3503 2641
09-20 64° 78° 9241 7129 5067 3524 2657
09-21 64° 83° 9292 7170 5099 3548 2676
09-22 64° 82° 9343 7211 5130 3571 2694
09-23 63° 73° 9389 7247 5156 3589 2707
09-24 61° 76° 9436 7284 5182 3607 2720
09-25 54° 79° 9480 7318 5207 3624 2732
09-26 53° 84° 9526 7354 5233 3642 2745
09-27 56° 86° 9575 7393 5262 3663 2761
09-28 56° 87° 9625 7433 5291 3684 2777
09-29 59° 87° 9676 7474 5322 3707 2795
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-30 59° 89° 9728 7516 5354 3731 2814
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-15 35° 52° 21 11 1 0 0
02-16 22° 36° 29 11 1 0 0
02-17 7° 25° 29 11 1 0 0
02-18 22° 43° 39 12 1 0 0
02-19 25° 54° 57 20 1 0 0
02-20 32° 63° 82 35 7 0 0
02-21 42° 69° 116 58 20 6 1
02-22 45° 65° 149 81 33 11 1
02-23 33° 61° 174 96 38 11 1
02-24 27° 44° 187 100 38 11 1
02-25 36° 70° 218 121 49 14 1
02-26 38° 77° 253 146 64 21 3
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 34° 79° 288 171 79 28 5
02-28 17° 34° 291 171 79 28 5
02-29 22° 52° 306 176 79 28 5
03-01 34° 47° 325 184 79 28 5
03-02 32° 64° 351 200 85 28 5
03-03 50° 81° 395 234 109 43 16
03-04 50° 77° 437 266 131 57 24
03-05 44° 49° 461 280 135 57 24
03-06 34° 60° 486 295 140 57 24
03-07 36° 52° 508 307 142 57 24
03-08 42° 52° 533 323 147 57 24
03-09 31° 49° 551 330 147 57 24
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-10 22° 53° 567 336 147 57 24
03-11 37° 69° 598 357 159 60 24
03-12 46° 74° 636 385 176 70 29
03-13 50° 73° 676 415 196 82 36
03-14 49° 67° 712 441 212 90 39
03-15 40° 62° 741 460 221 91 39
03-16 39° 64° 770 479 231 92 39
03-17 32° 44° 786 485 231 92 39
03-18 22° 37° 793 485 231 92 39
03-19 24° 63° 815 497 233 92 39
03-20 35° 48° 835 506 233 92 39
03-21 31° 48° 852 514 233 92 39
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-22 35° 48° 872 524 233 92 39
03-23 30° 47° 888 530 233 92 39
03-24 39° 60° 916 548 240 92 39
03-25 50° 57° 948 569 252 96 39
03-26 35° 52° 969 581 253 96 39
03-27 29° 49° 986 588 253 96 39
03-28 28° 65° 1011 603 258 96 39
03-29 43° 74° 1048 630 275 105 43
03-30 53° 67° 1086 658 293 115 48
03-31 51° 70° 1125 687 311 126 54
04-01 50° 67° 1161 713 328 134 57
04-02 40° 62° 1190 732 337 135 57
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-03 36° 43° 1207 739 337 135 57
04-04 35° 45° 1226 747 337 135 57
04-05 31° 53° 1246 758 337 135 57
04-06 34° 59° 1270 772 341 135 57
04-07 45° 73° 1308 799 359 144 61
04-08 49° 75° 1347 829 379 156 68
04-09 45° 65° 1381 852 392 161 68
04-10 44° 70° 1415 877 407 168 70
04-11 50° 65° 1451 903 422 176 73
04-12 46° 66° 1486 927 437 182 74
04-13 41° 80° 1524 956 455 193 80
04-14 63° 85° 1576 998 487 217 99
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-15 55° 76° 1619 1031 510 232 109
04-16 67° 80° 1670 1072 541 255 127
04-17 59° 70° 1713 1105 564 270 137
04-18 51° 66° 1749 1131 581 278 140
04-19 39° 57° 1775 1147 586 278 140
04-20 36° 49° 1796 1158 587 278 140
04-21 34° 51° 1817 1169 588 278 140
04-22 38° 67° 1848 1189 599 281 140
04-23 50° 66° 1884 1216 615 289 143
04-24 45° 65° 1916 1238 627 293 143
04-25 43° 60° 1946 1258 637 295 143
04-26 48° 66° 1981 1283 652 302 146
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-27 63° 79° 2030 1322 681 323 161
04-28 61° 72° 2074 1356 705 339 173
04-29 58° 71° 2116 1388 728 354 182
04-30 53° 80° 2161 1423 752 370 194
05-01 60° 74° 2206 1458 777 388 206
05-02 61° 81° 2255 1497 806 409 222
05-03 55° 72° 2297 1529 828 422 230
05-04 58° 76° 2341 1563 853 439 242
05-05 47° 68° 2377 1589 868 446 245
05-06 58° 71° 2419 1621 891 461 254
05-07 59° 78° 2466 1658 917 479 268
05-08 54° 80° 2511 1692 942 496 279
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-09 57° 70° 2552 1724 964 510 288
05-10 51° 71° 2591 1753 983 521 294
05-11 51° 76° 2633 1785 1004 535 303
05-12 55° 81° 2679 1821 1031 553 316
05-13 62° 74° 2726 1858 1057 571 329
05-14 61° 67° 2768 1890 1079 585 339
05-15 54° 74° 2810 1922 1101 599 347
05-16 61° 74° 2855 1957 1127 617 360
05-17 59° 82° 2904 1996 1155 637 376
05-18 62° 85° 2955 2037 1186 661 394
05-19 66° 88° 3010 2082 1221 687 416
05-20 72° 85° 3066 2128 1258 716 439
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-21 69° 88° 3123 2174 1294 744 462
05-22 58° 74° 3167 2209 1318 760 474
05-23 52° 80° 3211 2243 1342 776 484
05-24 67° 72° 3258 2280 1370 796 499
05-25 54° 77° 3301 2313 1393 811 509
05-26 64° 81° 3352 2354 1423 833 526
05-27 57° 77° 3397 2388 1448 850 538
05-28 57° 76° 3441 2423 1472 866 550
05-29 51° 73° 3481 2452 1492 878 556
05-30 53° 77° 3524 2486 1515 893 566
05-31 60° 78° 3571 2523 1542 912 580
06-01 63° 74° 3617 2559 1568 930 594
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-02 56° 80° 3663 2595 1595 949 607
06-03 66° 86° 3717 2639 1628 975 628
06-04 69° 82° 3771 2683 1662 1000 648
06-05 66° 82° 3823 2725 1694 1024 668
06-06 63° 82° 3873 2765 1724 1046 685
06-07 57° 86° 3923 2804 1754 1068 701
06-08 67° 85° 3976 2848 1787 1094 722
06-09 58° 83° 4025 2887 1816 1114 738
06-10 56° 75° 4068 2920 1840 1130 748
06-11 52° 81° 4113 2955 1865 1147 760
06-12 63° 89° 4167 2999 1899 1173 781
06-13 71° 93° 4227 3049 1938 1205 808
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-14 69° 87° 4283 3095 1975 1233 831
06-15 61° 87° 4335 3137 2007 1257 850
06-16 74° 92° 4396 3188 2047 1290 878
06-17 75° 93° 4458 3240 2090 1324 907
06-18 73° 90° 4518 3289 2129 1355 933
06-19 72° 90° 4577 3338 2168 1386 959
06-20 70° 91° 4635 3387 2207 1417 985
06-21 70° 91° 4694 3436 2245 1447 1010
06-22 74° 91° 4754 3486 2286 1480 1038
06-23 73° 88° 4813 3535 2324 1510 1063
06-24 69° 92° 4871 3583 2362 1540 1089
06-25 72° 90° 4930 3632 2401 1572 1115
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-26 68° 84° 4984 3676 2435 1597 1136
06-27 63° 83° 5035 3717 2466 1620 1154
06-28 70° 81° 5089 3761 2500 1646 1175
06-29 74° 89° 5149 3810 2540 1678 1201
06-30 61° 76° 5195 3847 2567 1697 1215
07-01 55° 77° 5240 3881 2591 1713 1226
07-02 67° 90° 5296 3928 2627 1741 1249
07-03 70° 85° 5351 3973 2662 1768 1272
07-04 70° 82° 5405 4017 2696 1795 1293
07-05 68° 78° 5456 4058 2728 1818 1311
07-06 62° 84° 5508 4100 2759 1841 1329
07-07 66° 88° 5562 4144 2794 1868 1351
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-08 67° 84° 5616 4188 2827 1893 1372
07-09 70° 74° 5666 4228 2857 1916 1389
07-10 65° 85° 5720 4271 2891 1941 1409
07-11 62° 82° 5769 4311 2921 1963 1426
07-12 64° 86° 5822 4354 2954 1988 1446
07-13 71° 87° 5880 4402 2991 2017 1470
07-14 74° 92° 5941 4453 3032 2050 1498
07-15 76° 93° 6004 4506 3075 2085 1528
07-16 73° 83° 6060 4552 3111 2113 1552
07-17 67° 83° 6113 4595 3144 2138 1571
07-18 58° 77° 6159 4631 3170 2156 1584
07-19 56° 78° 6204 4666 3195 2173 1596
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-20 58° 78° 6250 4702 3221 2191 1610
07-21 63° 80° 6299 4741 3251 2213 1626
07-22 61° 83° 6349 4781 3281 2235 1643
07-23 63° 86° 6402 4824 3313 2259 1663
07-24 67° 89° 6458 4870 3349 2288 1686
07-25 69° 83° 6513 4915 3384 2314 1707
07-26 68° 85° 6567 4959 3418 2341 1729
07-27 66° 83° 6620 5002 3451 2365 1749
07-28 72° 85° 6677 5049 3488 2394 1772
07-29 69° 91° 6735 5096 3526 2424 1797
07-30 71° 87° 6792 5144 3563 2453 1821
07-31 69° 87° 6848 5190 3599 2481 1845
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-01 71° 88° 6905 5237 3637 2511 1869
08-02 68° 85° 6960 5282 3671 2537 1891
08-03 67° 91° 7017 5329 3709 2567 1915
08-04 70° 93° 7077 5379 3748 2598 1941
08-05 73° 93° 7138 5429 3789 2631 1969
08-06 66° 80° 7189 5471 3820 2654 1987
08-07 66° 80° 7240 5512 3851 2677 2006
08-08 62° 81° 7289 5551 3880 2699 2022
08-09 56° 74° 7332 5584 3903 2714 2032
08-10 52° 78° 7375 5617 3926 2728 2042
08-11 59° 80° 7422 5654 3953 2748 2056
08-12 66° 72° 7469 5691 3981 2767 2070
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-13 66° 78° 7519 5731 4010 2789 2087
08-14 67° 80° 7571 5773 4042 2812 2105
08-15 72° 88° 7629 5821 4080 2842 2131
08-16 68° 89° 7686 5867 4117 2871 2154
08-17 68° 82° 7739 5910 4150 2896 2174
08-18 65° 82° 7790 5952 4181 2919 2193
08-19 63° 82° 7841 5993 4212 2942 2210
08-20 57° 79° 7886 6028 4238 2960 2223
08-21 60° 76° 7933 6064 4264 2978 2236
08-22 53° 78° 7976 6098 4287 2993 2247
08-23 55° 84° 8024 6136 4315 3013 2262
08-24 72° 87° 8081 6183 4352 3042 2286
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-25 73° 96° 8143 6235 4395 3077 2315
08-26 75° 99° 8208 6290 4440 3114 2347
08-27 75° 99° 8273 6345 4484 3151 2379
08-28 71° 89° 8331 6393 4522 3180 2404
08-29 73° 94° 8392 6444 4564 3214 2432
08-30 74° 89° 8452 6494 4603 3245 2459
08-31 65° 86° 8506 6537 4637 3271 2479
09-01 61° 81° 8555 6577 4666 3292 2495
09-02 52° 79° 8598 6610 4689 3307 2506
09-03 53° 80° 8643 6644 4714 3324 2517
09-04 50° 84° 8688 6680 4739 3341 2530
09-05 59° 90° 8741 6723 4772 3366 2550
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-06 59° 77° 8787 6759 4798 3384 2563
09-07 48° 71° 8825 6786 4816 3394 2567
09-08 43° 74° 8861 6813 4832 3402 2571
09-09 47° 80° 8903 6844 4854 3416 2579
09-10 52° 82° 8947 6879 4879 3433 2591
09-11 58° 87° 8998 6920 4909 3455 2609
09-12 61° 87° 9050 6962 4941 3479 2628
09-13 66° 71° 9097 6999 4968 3498 2641
09-14 62° 87° 9149 7041 5000 3523 2661
09-15 65° 89° 9204 7086 5036 3550 2683
09-16 65° 88° 9259 7131 5070 3576 2705
09-17 61° 88° 9312 7174 5103 3601 2725
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-18 62° 87° 9364 7216 5136 3626 2744
09-19 64° 91° 9420 7262 5171 3653 2767
09-20 71° 94° 9480 7312 5212 3686 2794
09-21 70° 83° 9535 7357 5246 3713 2816
09-22 63° 76° 9583 7395 5274 3732 2831
09-23 62° 65° 9625 7427 5296 3746 2840
09-24 61° 72° 9670 7462 5321 3763 2851
09-25 56° 79° 9715 7497 5346 3780 2864
09-26 54° 80° 9760 7532 5371 3797 2876
09-27 60° 73° 9805 7567 5396 3814 2887
09-28 64° 80° 9855 7607 5426 3836 2904
09-29 61° 82° 9904 7646 5455 3858 2921
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-30 59° 85° 9954 7686 5485 3879 2938

 

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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