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Crabgrass/Annual Bluegrass Preemergence Timer (GDD 32)
through Mon, Sep. 25. 2023

 
  

Porter, IN

        

Generously Supported By:



Tabular Data

Daily GDD accumulation for various base temperature models in 2023 & 2022

2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-15 37° 52° 23 13 3 0 0
02-16 29° 38° 35 15 3 0 0
02-17 21° 29° 38 15 3 0 0
02-18 21° 44° 48 15 3 0 0
02-19 37° 52° 71 28 5 0 0
02-20 33° 45° 88 35 5 0 0
02-21 28° 39° 99 36 5 0 0
02-22 32° 35° 111 38 5 0 0
02-23 27° 46° 125 42 5 0 0
02-24 23° 28° 129 42 5 0 0
02-25 25° 36° 138 42 5 0 0
02-26 27° 48° 153 47 5 0 0
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 36° 56° 177 62 9 0 0
02-28 37° 48° 198 72 10 0 0
03-01 35° 55° 221 85 13 0 0
03-02 33° 41° 236 90 13 0 0
03-03 31° 38° 249 93 13 0 0
03-04 28° 42° 262 97 13 0 0
03-05 30° 48° 280 104 13 0 0
03-06 39° 48° 301 115 14 0 0
03-07 34° 42° 317 121 14 0 0
03-08 32° 46° 334 128 14 0 0
03-09 33° 43° 350 134 14 0 0
03-10 32° 36° 362 136 14 0 0
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-11 33° 41° 377 141 14 0 0
03-12 30° 35° 387 141 14 0 0
03-13 25° 31° 393 141 14 0 0
03-14 23° 32° 399 141 14 0 0
03-15 20° 47° 410 142 14 0 0
03-16 38° 46° 430 152 14 0 0
03-17 28° 49° 446 159 14 0 0
03-18 14° 27° 446 159 14 0 0
03-19 19° 38° 453 159 14 0 0
03-20 25° 47° 468 163 14 0 0
03-21 34° 50° 488 173 14 0 0
03-22 39° 49° 510 185 16 0 0
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-23 35° 49° 530 195 16 0 0
03-24 34° 46° 548 203 16 0 0
03-25 34° 40° 563 209 16 0 0
03-26 32° 49° 582 217 16 0 0
03-27 33° 42° 597 223 16 0 0
03-28 28° 48° 613 229 16 0 0
03-29 26° 41° 625 231 16 0 0
03-30 22° 53° 640 236 16 0 0
03-31 50° 65° 676 261 32 8 3
04-01 34° 53° 697 273 34 8 3
04-02 29° 53° 717 282 34 8 3
04-03 41° 60° 745 300 42 8 3
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-04 46° 65° 779 324 56 13 3
04-05 40° 71° 813 348 70 19 4
04-06 34° 51° 833 358 70 19 4
04-07 34° 48° 852 367 70 19 4
04-08 36° 58° 877 383 75 19 4
04-09 41° 64° 908 403 86 22 4
04-10 44° 67° 941 426 99 27 5
04-11 49° 75° 981 456 119 39 12
04-12 56° 79° 1026 492 144 57 24
04-13 53° 79° 1071 526 169 73 35
04-14 52° 79° 1114 560 192 89 46
04-15 61° 79° 1162 598 220 108 61
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-16 38° 67° 1192 618 231 111 61
04-17 31° 39° 1205 621 231 111 61
04-18 35° 55° 1228 634 234 111 61
04-19 39° 75° 1263 659 249 118 63
04-20 59° 78° 1310 695 275 137 76
04-21 46° 60° 1341 717 286 140 76
04-22 38° 50° 1363 729 289 140 76
04-23 36° 42° 1380 736 289 140 76
04-24 32° 49° 1399 744 289 140 76
04-25 37° 45° 1418 753 289 140 76
04-26 33° 47° 1436 761 289 140 76
04-27 33° 63° 1462 777 294 140 76
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-28 44° 53° 1488 794 301 140 76
04-29 37° 63° 1517 812 309 140 76
04-30 39° 48° 1538 824 311 140 76
05-01 38° 45° 1558 833 311 140 76
05-02 41° 48° 1580 846 313 140 76
05-03 41° 47° 1602 858 315 140 76
05-04 37° 67° 1632 878 326 142 76
05-05 50° 74° 1673 908 346 154 84
05-06 57° 76° 1717 943 370 171 95
05-07 62° 78° 1765 981 398 191 110
05-08 51° 63° 1801 1006 414 198 113
05-09 47° 63° 1834 1029 427 203 113
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-10 46° 74° 1872 1057 445 213 118
05-11 54° 80° 1917 1092 470 230 130
05-12 64° 78° 1966 1131 499 252 146
05-13 61° 70° 2010 1165 523 267 157
05-14 57° 65° 2049 1194 542 278 163
05-15 50° 63° 2083 1219 556 285 164
05-16 46° 76° 2122 1248 575 296 170
05-17 46° 60° 2153 1269 586 299 170
05-18 44° 71° 2189 1295 602 307 173
05-19 55° 70° 2230 1325 623 319 181
05-20 46° 60° 2261 1347 634 323 181
05-21 48° 74° 2300 1375 653 333 186
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-22 51° 76° 2341 1407 675 347 195
05-23 56° 79° 2387 1443 700 365 208
05-24 56° 68° 2427 1473 720 377 215
05-25 47° 58° 2457 1493 730 379 215
05-26 43° 64° 2489 1514 742 382 215
05-27 45° 72° 2525 1541 758 391 218
05-28 52° 73° 2566 1571 779 403 226
05-29 53° 78° 2609 1605 802 419 236
05-30 59° 83° 2659 1644 832 440 253
05-31 67° 87° 2713 1689 867 467 274
06-01 65° 85° 2767 1732 900 493 295
06-02 63° 85° 2819 1775 932 517 314
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-03 63° 81° 2869 1814 962 538 331
06-04 60° 73° 2913 1849 986 555 342
06-05 51° 77° 2955 1880 1008 568 351
06-06 58° 73° 2998 1914 1031 584 361
06-07 54° 70° 3038 1944 1051 596 368
06-08 49° 69° 3076 1971 1069 605 373
06-09 50° 73° 3115 2001 1088 617 379
06-10 56° 83° 3162 2038 1116 636 393
06-11 54° 71° 3203 2068 1136 648 401
06-12 53° 66° 3240 2095 1153 658 405
06-13 56° 63° 3277 2123 1170 667 409
06-14 56° 66° 3316 2152 1189 678 415
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-15 54° 77° 3360 2185 1213 693 426
06-16 53° 63° 3396 2211 1229 702 429
06-17 49° 74° 3436 2241 1249 713 436
06-18 56° 82° 3483 2278 1276 732 450
06-19 62° 81° 3532 2318 1305 754 466
06-20 60° 79° 3580 2356 1333 774 481
06-21 62° 83° 3631 2396 1364 797 499
06-22 63° 79° 3680 2436 1393 818 515
06-23 65° 79° 3730 2476 1423 840 532
06-24 61° 85° 3782 2517 1455 863 551
06-25 66° 83° 3834 2560 1487 888 570
06-26 66° 72° 3881 2596 1514 907 584
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-27 60° 67° 3922 2628 1535 920 592
06-28 54° 80° 3967 2662 1560 936 604
06-29 68° 84° 4021 2706 1594 962 625
06-30 68° 86° 4076 2752 1629 990 647
07-01 71° 82° 4131 2796 1664 1016 668
07-02 65° 75° 4178 2834 1691 1036 683
07-03 64° 78° 4227 2873 1720 1057 699
07-04 64° 89° 4282 2917 1755 1084 721
07-05 69° 88° 4339 2964 1792 1112 745
07-06 66° 74° 4387 3003 1820 1133 760
07-07 61° 79° 4435 3041 1848 1153 775
07-08 62° 71° 4480 3075 1873 1169 787
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-09 55° 81° 4526 3111 1899 1187 800
07-10 60° 82° 4575 3150 1928 1209 816
07-11 66° 86° 4629 3195 1962 1235 837
07-12 59° 79° 4676 3232 1989 1254 851
07-13 65° 75° 4724 3270 2017 1274 866
07-14 65° 88° 4778 3314 2051 1300 887
07-15 68° 81° 4831 3356 2084 1324 907
07-16 65° 80° 4881 3396 2114 1347 924
07-17 64° 77° 4929 3435 2142 1367 939
07-18 56° 75° 4973 3468 2166 1383 950
07-19 56° 80° 5019 3505 2192 1401 963
07-20 67° 85° 5073 3549 2226 1427 984
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-21 63° 73° 5120 3585 2253 1445 997
07-22 56° 83° 5167 3623 2280 1465 1012
07-23 65° 82° 5219 3664 2312 1488 1031
07-24 62° 83° 5269 3705 2342 1511 1048
07-25 62° 87° 5322 3747 2375 1535 1068
07-26 72° 87° 5379 3795 2412 1565 1092
07-27 69° 89° 5436 3842 2450 1594 1116
07-28 72° 91° 5496 3891 2489 1625 1143
07-29 66° 80° 5547 3933 2520 1649 1161
07-30 61° 77° 5594 3969 2547 1667 1175
07-31 58° 78° 5640 4006 2573 1686 1188
08-01 59° 81° 5688 4044 2601 1706 1203
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-02 62° 81° 5738 4083 2631 1727 1220
08-03 61° 84° 5788 4124 2661 1750 1237
08-04 66° 81° 5840 4165 2693 1773 1256
08-05 66° 75° 5888 4204 2721 1794 1271
08-06 63° 70° 5933 4239 2746 1811 1283
08-07 65° 74° 5981 4276 2774 1830 1298
08-08 58° 82° 6029 4315 2802 1851 1313
08-09 62° 80° 6078 4353 2831 1871 1329
08-10 62° 81° 6127 4393 2860 1893 1345
08-11 67° 82° 6180 4435 2893 1917 1365
08-12 68° 81° 6233 4478 2926 1942 1384
08-13 63° 79° 6281 4517 2954 1963 1400
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-14 64° 76° 6329 4555 2982 1983 1415
08-15 63° 74° 6376 4592 3009 2002 1429
08-16 55° 79° 6421 4627 3034 2019 1441
08-17 62° 78° 6470 4665 3063 2039 1457
08-18 58° 73° 6513 4699 3086 2055 1467
08-19 55° 78° 6558 4734 3111 2072 1479
08-20 69° 86° 6614 4779 3147 2099 1501
08-21 69° 79° 6666 4821 3179 2123 1520
08-22 67° 85° 6720 4865 3213 2149 1542
08-23 70° 95° 6780 4916 3253 2182 1569
08-24 79° 97° 6846 4971 3299 2219 1602
08-25 69° 78° 6898 5013 3331 2243 1621
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-26 68° 74° 6947 5052 3360 2265 1637
08-27 59° 72° 6991 5086 3384 2280 1648
08-28 53° 75° 7033 5119 3406 2295 1657
08-29 56° 80° 7079 5155 3433 2313 1670
08-30 58° 67° 7120 5185 3453 2326 1678
08-31 50° 74° 7160 5215 3473 2337 1684
09-01 53° 82° 7205 5250 3498 2354 1697
09-02 56° 84° 7253 5289 3526 2375 1712
09-03 66° 89° 7309 5334 3562 2403 1735
09-04 68° 89° 7365 5381 3598 2431 1758
09-05 73° 89° 7425 5430 3638 2462 1785
09-06 68° 81° 7477 5473 3670 2487 1804
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-07 65° 69° 7522 5508 3695 2504 1816
09-08 61° 67° 7564 5540 3717 2518 1825
09-09 55° 72° 7606 5571 3739 2531 1834
09-10 52° 76° 7648 5603 3761 2545 1843
09-11 61° 66° 7689 5634 3782 2558 1851
09-12 57° 67° 7729 5664 3802 2570 1858
09-13 50° 66° 7765 5690 3818 2579 1861
09-14 48° 69° 7801 5717 3835 2587 1864
09-15 49° 74° 7841 5746 3854 2599 1871
09-16 52° 73° 7881 5777 3874 2611 1878
09-17 57° 66° 7921 5806 3894 2622 1885
09-18 53° 67° 7959 5834 3912 2632 1890
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-19 50° 63° 7994 5859 3927 2639 1891
09-20 57° 79° 8039 5895 3952 2657 1904
09-21 63° 77° 8087 5932 3980 2677 1919
09-22 62° 80° 8136 5971 4009 2697 1935
09-23 58° 76° 8181 6006 4034 2715 1947
09-24 52° 76° 8223 6038 4056 2729 1956
09-25 58° 76° 8268 6073 4081 2746 1968
09-26 61° 73° 8313 6108 4106 2763 1980
09-27 59° 68° 8354 6140 4127 2776 1988
09-28 58° 68° 8395 6171 4148 2789 1996
09-29 56° 72° 8437 6203 4170 2803 2005
09-30 57° 78° 8483 6238 4196 2820 2018
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
2022Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-15 19° 38° 6 0 0 0 0
02-16 40° 53° 31 14 4 0 0
02-17 23° 51° 46 19 4 0 0
02-18 7° 31° 46 19 4 0 0
02-19 11° 31° 46 19 4 0 0
02-20 13° 45° 53 19 4 0 0
02-21 33° 52° 74 30 5 0 0
02-22 26° 51° 90 37 5 0 0
02-23 19° 25° 91 37 5 0 0
02-24 22° 28° 94 37 5 0 0
02-25 21° 28° 97 37 5 0 0
02-26 12° 31° 97 37 5 0 0
2022Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 26° 41° 108 38 5 0 0
02-28 25° 51° 124 44 5 0 0
03-01 32° 46° 141 51 5 0 0
03-02 28° 57° 162 62 6 0 0
03-03 27° 34° 170 62 6 0 0
03-04 24° 43° 181 63 6 0 0
03-05 38° 69° 213 85 17 4 0
03-06 36° 61° 240 101 24 4 0
03-07 32° 36° 252 103 24 4 0
03-08 29° 38° 263 105 24 4 0
03-09 27° 45° 277 109 24 4 0
03-10 24° 30° 282 109 24 4 0
2022Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-11 20° 30° 285 109 24 4 0
03-12 13° 22° 285 109 24 4 0
03-13 18° 50° 297 111 24 4 0
03-14 37° 60° 324 127 31 4 0
03-15 34° 49° 343 137 31 4 0
03-16 35° 66° 372 155 39 4 0
03-17 46° 68° 407 180 54 11 2
03-18 41° 50° 430 194 58 11 2
03-19 37° 46° 450 203 58 11 2
03-20 33° 61° 475 218 63 11 2
03-21 40° 71° 508 242 76 17 3
03-22 47° 58° 539 262 87 19 3
2022Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-23 47° 60° 570 284 98 23 3
03-24 41° 47° 593 296 100 23 3
03-25 35° 45° 611 304 100 23 3
03-26 27° 35° 620 304 100 23 3
03-27 23° 28° 623 304 100 23 3
03-28 19° 30° 626 304 100 23 3
03-29 24° 42° 637 305 100 23 3
03-30 40° 62° 666 324 110 24 3
03-31 34° 57° 689 337 113 24 3
04-01 32° 40° 703 341 113 24 3
04-02 31° 45° 719 347 113 24 3
04-03 33° 47° 737 355 113 24 3
2022Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-04 40° 54° 762 370 118 24 3
04-05 33° 56° 784 383 120 24 3
04-06 45° 55° 813 401 128 24 3
04-07 39° 44° 832 411 128 24 3
04-08 34° 42° 848 416 128 24 3
04-09 32° 42° 863 422 128 24 3
04-10 31° 60° 887 435 132 24 3
04-11 47° 58° 917 456 142 27 3
04-12 38° 69° 948 477 153 30 3
04-13 49° 67° 984 503 169 38 5
04-14 35° 52° 1006 514 171 38 5
04-15 42° 56° 1032 531 177 38 5
2022Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-16 34° 45° 1050 539 177 38 5
04-17 30° 42° 1064 543 177 38 5
04-18 31° 40° 1078 546 177 38 5
04-19 35° 45° 1096 554 177 38 5
04-20 36° 54° 1119 568 181 38 5
04-21 49° 67° 1155 594 197 46 8
04-22 47° 58° 1186 614 207 48 8
04-23 50° 82° 1230 648 231 64 20
04-24 64° 73° 1276 684 258 83 33
04-25 42° 61° 1306 704 267 84 33
04-26 35° 47° 1325 713 267 84 33
04-27 32° 38° 1338 716 267 84 33
2022Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-28 36° 51° 1359 727 268 84 33
04-29 46° 65° 1393 751 282 90 33
04-30 50° 70° 1431 779 300 100 39
05-01 50° 59° 1463 802 312 104 39
05-02 47° 54° 1492 820 321 105 39
05-03 43° 51° 1517 835 326 105 39
05-04 42° 52° 1542 850 331 105 39
05-05 41° 56° 1568 866 337 105 39
05-06 49° 52° 1596 884 345 105 39
05-07 44° 62° 1627 906 356 108 39
05-08 43° 66° 1660 928 369 113 39
05-09 54° 80° 1704 963 393 129 50
2022Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-10 66° 86° 1759 1007 428 156 72
05-11 72° 87° 1816 1055 465 185 96
05-12 70° 88° 1873 1102 502 214 120
05-13 63° 87° 1926 1145 535 239 140
05-14 61° 78° 1974 1182 563 259 155
05-15 55° 73° 2016 1215 585 273 164
05-16 52° 74° 2058 1246 607 287 173
05-17 50° 63° 2092 1270 621 293 174
05-18 55° 64° 2129 1298 638 302 178
05-19 51° 83° 2175 1333 664 320 191
05-20 63° 85° 2226 1375 695 343 209
05-21 55° 61° 2262 1401 711 351 212
2022Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-22 50° 59° 2294 1423 723 355 212
05-23 43° 60° 2324 1442 733 357 212
05-24 48° 66° 2359 1467 748 364 214
05-25 57° 81° 2406 1505 775 383 228
05-26 67° 76° 2456 1544 805 405 245
05-27 51° 66° 2492 1570 821 413 248
05-28 45° 72° 2529 1597 838 422 252
05-29 61° 82° 2578 1636 867 443 268
05-30 68° 86° 2633 1681 902 470 290
05-31 72° 88° 2691 1729 940 500 315
06-01 58° 78° 2737 1765 966 518 328
06-02 56° 72° 2779 1798 988 532 337
2022Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-03 55° 78° 2824 1832 1013 549 349
06-04 49° 72° 2863 1861 1032 560 355
06-05 60° 79° 2910 1899 1059 579 370
06-06 63° 78° 2959 1937 1088 600 385
06-07 54° 64° 2996 1964 1105 609 389
06-08 53° 69° 3035 1993 1124 620 395
06-09 53° 74° 3076 2025 1145 633 404
06-10 54° 79° 3121 2059 1170 650 415
06-11 55° 73° 3163 2091 1192 664 424
06-12 60° 73° 3207 2126 1216 680 436
06-13 59° 89° 3260 2168 1249 705 455
06-14 76° 95° 3323 2222 1292 740 485
2022Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-15 77° 94° 3387 2275 1336 776 516
06-16 74° 94° 3449 2327 1378 810 545
06-17 69° 81° 3501 2370 1410 834 565
06-18 57° 68° 3542 2400 1431 847 572
06-19 51° 83° 3587 2435 1456 864 584
06-20 62° 92° 3642 2480 1491 891 606
06-21 69° 97° 3703 2531 1532 924 634
06-22 73° 86° 3760 2579 1569 953 659
06-23 62° 79° 3809 2617 1598 974 674
06-24 57° 88° 3860 2658 1629 997 692
06-25 63° 78° 3908 2696 1657 1017 707
06-26 68° 77° 3959 2737 1688 1040 725
2022Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-27 59° 73° 4003 2771 1712 1056 736
06-28 53° 83° 4049 2807 1738 1074 749
06-29 66° 85° 4102 2850 1771 1099 769
06-30 69° 91° 4160 2898 1809 1129 794
07-01 64° 79° 4209 2938 1838 1150 810
07-02 61° 79° 4257 2976 1866 1170 825
07-03 62° 83° 4308 3016 1897 1193 843
07-04 65° 87° 4362 3060 1931 1219 864
07-05 68° 92° 4420 3109 1969 1249 890
07-06 71° 77° 4472 3151 2001 1273 909
07-07 68° 82° 4525 3194 2034 1298 928
07-08 72° 80° 4579 3238 2068 1324 950
2022Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-09 66° 77° 4629 3277 2098 1346 966
07-10 57° 82° 4677 3315 2126 1366 981
07-11 65° 84° 4729 3358 2158 1390 1001
07-12 69° 83° 4783 3401 2192 1416 1021
07-13 65° 79° 4833 3441 2222 1438 1038
07-14 59° 76° 4879 3477 2248 1456 1051
07-15 59° 73° 4923 3511 2272 1472 1062
07-16 68° 79° 4975 3553 2304 1496 1081
07-17 70° 75° 5025 3594 2334 1518 1099
07-18 68° 86° 5081 3639 2370 1546 1121
07-19 68° 87° 5136 3685 2405 1573 1143
07-20 75° 89° 5196 3734 2445 1605 1170
2022Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-21 69° 90° 5253 3782 2482 1634 1194
07-22 70° 89° 5311 3829 2520 1664 1219
07-23 67° 83° 5364 3872 2553 1689 1239
07-24 72° 82° 5419 3918 2588 1716 1261
07-25 65° 75° 5467 3956 2616 1736 1277
07-26 60° 79° 5515 3993 2644 1756 1291
07-27 68° 83° 5568 4037 2677 1781 1312
07-28 65° 81° 5619 4077 2708 1804 1329
07-29 60° 78° 5666 4114 2735 1823 1343
07-30 58° 82° 5714 4152 2763 1843 1358
07-31 62° 82° 5764 4192 2793 1865 1375
08-01 70° 85° 5819 4238 2828 1892 1397
2022Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-02 65° 86° 5873 4281 2862 1918 1418
08-03 71° 91° 5932 4330 2901 1949 1444
08-04 70° 83° 5986 4375 2935 1975 1466
08-05 72° 83° 6042 4420 2971 2003 1488
08-06 71° 89° 6100 4468 3009 2033 1513
08-07 75° 81° 6156 4514 3045 2061 1536
08-08 68° 82° 6209 4558 3078 2086 1557
08-09 63° 73° 6255 4594 3104 2104 1570
08-10 57° 80° 6302 4630 3131 2123 1583
08-11 66° 77° 6351 4669 3160 2144 1599
08-12 57° 77° 6396 4704 3185 2161 1611
08-13 58° 77° 6442 4740 3211 2179 1624
2022Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-14 65° 74° 6489 4778 3238 2198 1638
08-15 64° 76° 6537 4815 3266 2218 1653
08-16 60° 78° 6584 4853 3293 2237 1667
08-17 59° 78° 6631 4889 3320 2256 1681
08-18 58° 81° 6678 4926 3347 2275 1695
08-19 63° 83° 6729 4968 3378 2298 1714
08-20 65° 78° 6779 5007 3408 2320 1730
08-21 64° 75° 6827 5045 3436 2340 1745
08-22 66° 78° 6877 5085 3466 2362 1762
08-23 58° 80° 6924 5123 3493 2381 1776
08-24 59° 82° 6973 5161 3522 2402 1792
08-25 61° 79° 7021 5199 3550 2422 1807
2022Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-26 63° 76° 7069 5237 3578 2442 1822
08-27 59° 82° 7117 5275 3606 2462 1837
08-28 66° 88° 7172 5321 3641 2489 1859
08-29 70° 85° 7228 5366 3677 2517 1882
08-30 65° 79° 7278 5406 3707 2539 1899
08-31 58° 83° 7326 5445 3735 2559 1914
09-01 64° 86° 7379 5488 3768 2584 1934
09-02 66° 84° 7432 5530 3801 2609 1954
09-03 66° 81° 7483 5572 3832 2632 1972
09-04 68° 71° 7531 5609 3860 2652 1987
09-05 65° 72° 7577 5646 3886 2670 2000
09-06 65° 77° 7626 5685 3915 2691 2017
2022Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-07 62° 76° 7674 5722 3943 2711 2031
09-08 55° 81° 7720 5758 3969 2729 2044
09-09 56° 82° 7767 5795 3996 2748 2058
09-10 60° 83° 7816 5834 4025 2769 2074
09-11 60° 70° 7859 5867 4048 2784 2084
09-12 54° 59° 7893 5892 4062 2790 2086
09-13 52° 73° 7934 5922 4083 2803 2093
09-14 53° 77° 7977 5955 4106 2818 2103
09-15 57° 80° 8023 5991 4132 2836 2116
09-16 58° 81° 8071 6029 4160 2856 2131
09-17 64° 83° 8122 6071 4191 2879 2150
09-18 67° 83° 8175 6114 4224 2904 2170
2022Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-19 61° 74° 8221 6150 4250 2922 2183
09-20 59° 86° 8272 6190 4281 2945 2200
09-21 67° 85° 8326 6234 4315 2971 2221
09-22 57° 66° 8365 6264 4334 2982 2227
09-23 43° 63° 8397 6285 4346 2986 2227
09-24 54° 73° 8438 6316 4367 2999 2236
09-25 56° 66° 8477 6345 4386 3010 2242
09-26 52° 60° 8511 6369 4400 3016 2242
09-27 50° 57° 8542 6390 4411 3019 2242
09-28 51° 58° 8574 6412 4423 3023 2242
09-29 39° 63° 8603 6431 4432 3024 2242
09-30 42° 64° 8634 6452 4443 3027 2242
2022Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55

 

Latest Updates

February 16th, 2023Welcome to the 2023 GDD Tracking Season

The roller coaster of late winter and early spring has begun in Michigan. Near 60°F a few days ago and now snow in the forecast once again. Despite the variable low and high temperatures for this time of year, GDDTracker starts counting on February 15. Spring is typically the time of year when GDDTracker receives the most attention for alerting turfgrass managers of optimal application timing windows for suppressing annual bluegrass seedheads and crabgrass preemergence applications. However, there are many models you may find helpful throughout the season including the early season DMI timer and 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 fantastic 2023!
 

 

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