Welcome!

It appears to be your first time visiting GDDTracker
Please enter your zip code for a customized experience. Also, be sure and watch our video introduction video.

   
       

Crabgrass Germination Prediction (GDD 50)
through Fri, Oct. 25. 2024

 
  

Dearborn, MI

        

Generously Supported By:



Tabular Data

Daily GDD accumulation for various base temperature models in 2024 & 2023

2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-15 25° 39° 10 0 0 0 0
02-16 23° 31° 15 0 0 0 0
02-17 18° 27° 16 0 0 0 0
02-18 17° 38° 22 0 0 0 0
02-19 19° 38° 28 0 0 0 0
02-20 22° 48° 41 3 0 0 0
02-21 30° 61° 64 16 3 0 0
02-22 37° 53° 87 29 6 0 0
02-23 26° 52° 104 37 6 0 0
02-24 20° 32° 109 37 6 0 0
02-25 25° 50° 125 43 6 0 0
02-26 34° 56° 148 56 9 0 0
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 44° 74° 185 83 26 9 4
02-28 23° 64° 206 94 28 9 4
02-29 21° 38° 214 94 28 9 4
03-01 25° 45° 227 98 28 9 4
03-02 37° 52° 250 110 30 9 4
03-03 35° 59° 275 125 35 9 4
03-04 42° 74° 310 151 51 17 7
03-05 44° 61° 341 171 61 19 7
03-06 39° 48° 362 183 63 19 7
03-07 39° 53° 387 197 67 19 7
03-08 42° 53° 412 212 72 19 7
03-09 37° 54° 435 226 76 19 7
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-10 31° 39° 448 228 76 19 7
03-11 27° 56° 468 238 76 19 7
03-12 43° 69° 501 262 90 25 7
03-13 51° 71° 541 291 109 36 14
03-14 48° 58° 572 312 120 39 14
03-15 39° 53° 596 326 124 39 14
03-16 35° 61° 622 342 130 39 14
03-17 31° 44° 637 348 130 39 14
03-18 25° 35° 646 348 130 39 14
03-19 28° 48° 662 354 130 39 14
03-20 24° 40° 672 354 130 39 14
03-21 18° 36° 677 354 130 39 14
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-22 25° 35° 685 354 130 39 14
03-23 26° 36° 695 354 130 39 14
03-24 23° 40° 704 354 130 39 14
03-25 32° 64° 730 370 136 39 14
03-26 46° 57° 759 389 146 41 14
03-27 30° 44° 775 395 146 41 14
03-28 24° 49° 789 399 146 41 14
03-29 24° 53° 806 406 146 41 14
03-30 35° 43° 823 413 146 41 14
03-31 38° 43° 841 421 146 41 14
04-01 38° 53° 865 435 149 41 14
04-02 40° 49° 887 447 151 41 14
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-03 38° 49° 909 459 153 41 14
04-04 35° 49° 929 469 153 41 14
04-05 35° 48° 948 478 153 41 14
04-06 38° 58° 975 495 159 41 14
04-07 29° 57° 996 506 161 41 14
04-08 47° 71° 1033 533 178 50 18
04-09 46° 76° 1072 562 197 61 24
04-10 47° 65° 1106 586 211 67 25
04-11 48° 61° 1139 609 223 71 25
04-12 46° 53° 1166 626 231 71 25
04-13 41° 64° 1196 647 241 74 25
04-14 48° 81° 1239 679 264 89 35
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-15 48° 66° 1274 704 279 96 37
04-16 46° 67° 1308 728 293 102 38
04-17 55° 72° 1350 760 315 115 46
04-18 52° 67° 1388 788 333 125 51
04-19 48° 61° 1420 810 345 129 51
04-20 41° 48° 1442 822 347 129 51
04-21 38° 45° 1462 832 347 129 51
04-22 33° 64° 1488 849 354 129 51
04-23 50° 59° 1521 871 366 134 51
04-24 35° 50° 1541 881 366 134 51
04-25 24° 54° 1558 888 366 134 51
04-26 33° 64° 1585 905 373 134 51
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-27 54° 81° 1630 940 398 151 64
04-28 63° 79° 1679 979 427 172 79
04-29 61° 82° 1728 1018 457 193 96
04-30 57° 73° 1772 1052 480 209 106
05-01 49° 83° 1816 1086 504 225 117
05-02 51° 72° 1855 1115 524 236 124
05-03 59° 69° 1897 1147 546 250 133
05-04 56° 73° 1940 1180 568 265 142
05-05 55° 72° 1981 1211 590 278 151
05-06 49° 67° 2017 1237 606 286 154
05-07 48° 70° 2054 1264 623 295 158
05-08 55° 79° 2099 1299 647 312 170
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-09 52° 59° 2132 1322 661 317 170
05-10 44° 65° 2165 1345 673 322 170
05-11 50° 56° 2196 1367 685 325 170
05-12 43° 69° 2231 1391 699 332 171
05-13 57° 82° 2278 1428 726 351 185
05-14 58° 72° 2321 1461 749 366 195
05-15 53° 75° 2363 1493 772 380 205
05-16 50° 76° 2404 1524 792 393 212
05-17 61° 74° 2450 1560 818 411 225
05-18 60° 76° 2496 1596 844 429 238
05-19 54° 88° 2544 1634 873 449 254
05-20 60° 87° 2596 1676 904 473 272
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-21 66° 88° 2651 1721 939 500 294
05-22 72° 88° 2709 1769 977 530 319
05-23 58° 81° 2757 1807 1005 550 334
05-24 53° 81° 2802 1842 1030 567 346
05-25 65° 82° 2853 1883 1062 590 365
05-26 55° 80° 2899 1919 1087 608 377
05-27 61° 70° 2942 1953 1111 623 388
05-28 57° 73° 2985 1985 1134 638 398
05-29 52° 66° 3022 2012 1151 647 402
05-30 43° 72° 3058 2038 1166 655 404
05-31 45° 76° 3096 2066 1184 665 409
06-01 52° 77° 3138 2098 1207 679 419
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-02 63° 75° 3185 2136 1234 698 433
06-03 58° 77° 3230 2171 1259 715 445
06-04 59° 85° 3281 2211 1289 738 462
06-05 69° 83° 3335 2255 1323 764 483
06-06 62° 80° 3384 2294 1352 785 499
06-07 60° 69° 3426 2326 1374 799 508
06-08 52° 78° 3469 2359 1397 814 518
06-09 55° 75° 3512 2392 1420 829 528
06-10 53° 69° 3551 2421 1439 840 534
06-11 45° 72° 3587 2447 1456 848 538
06-12 58° 85° 3636 2487 1485 869 554
06-13 70° 92° 3696 2536 1524 901 580
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-14 63° 82° 3746 2576 1555 923 598
06-15 52° 78° 3789 2609 1578 938 608
06-16 56° 85° 3838 2648 1606 959 623
06-17 70° 94° 3898 2698 1647 991 651
06-18 75° 92° 3959 2749 1688 1024 679
06-19 76° 90° 4020 2801 1729 1057 707
06-20 73° 88° 4079 2849 1768 1088 733
06-21 66° 88° 4135 2895 1803 1116 755
06-22 70° 93° 4194 2944 1842 1147 781
06-23 69° 84° 4249 2989 1877 1174 803
06-24 64° 81° 4299 3030 1908 1196 821
06-25 67° 83° 4352 3072 1941 1221 841
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-26 67° 78° 4403 3113 1971 1244 858
06-27 58° 74° 4447 3147 1995 1260 869
06-28 56° 74° 4490 3180 2018 1275 879
06-29 67° 87° 4545 3225 2053 1302 901
06-30 61° 78° 4592 3262 2081 1321 916
07-01 50° 76° 4633 3293 2101 1334 923
07-02 54° 79° 4678 3328 2126 1351 935
07-03 68° 88° 4734 3374 2162 1379 958
07-04 65° 85° 4787 3417 2195 1404 978
07-05 64° 81° 4837 3457 2225 1426 995
07-06 63° 80° 4887 3497 2255 1448 1012
07-07 58° 86° 4937 3537 2285 1470 1029
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-08 66° 89° 4992 3582 2321 1497 1052
07-09 71° 81° 5046 3626 2355 1523 1073
07-10 65° 73° 5093 3663 2381 1542 1086
07-11 63° 83° 5144 3705 2413 1565 1105
07-12 65° 84° 5197 3747 2446 1590 1125
07-13 63° 88° 5251 3791 2479 1616 1145
07-14 71° 86° 5307 3838 2516 1644 1169
07-15 72° 89° 5366 3886 2554 1675 1194
07-16 70° 88° 5423 3933 2591 1704 1218
07-17 69° 84° 5477 3977 2625 1730 1239
07-18 59° 75° 5522 4012 2650 1747 1251
07-19 54° 80° 5567 4047 2675 1764 1263
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-20 57° 82° 5614 4084 2703 1783 1278
07-21 61° 84° 5665 4125 2733 1806 1295
07-22 65° 81° 5716 4166 2764 1829 1313
07-23 62° 84° 5767 4207 2795 1852 1331
07-24 66° 79° 5817 4247 2826 1874 1349
07-25 61° 80° 5866 4286 2854 1895 1364
07-26 57° 81° 5913 4323 2881 1914 1378
07-27 55° 83° 5960 4360 2908 1933 1392
07-28 59° 90° 6012 4402 2940 1957 1411
07-29 74° 84° 6069 4449 2977 1986 1435
07-30 70° 84° 6124 4494 3012 2013 1457
07-31 68° 90° 6181 4541 3049 2042 1481
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-01 69° 90° 6239 4589 3087 2072 1506
08-02 72° 79° 6292 4632 3121 2097 1527
08-03 70° 91° 6351 4681 3159 2128 1552
08-04 63° 90° 6405 4725 3194 2154 1574
08-05 71° 85° 6461 4772 3230 2182 1597
08-06 62° 73° 6507 4807 3255 2200 1609
08-07 61° 79° 6555 4845 3283 2220 1624
08-08 64° 84° 6607 4887 3315 2244 1643
08-09 65° 81° 6657 4927 3346 2266 1661
08-10 56° 74° 6700 4960 3369 2281 1671
08-11 56° 77° 6744 4994 3393 2297 1682
08-12 55° 81° 6790 5030 3419 2315 1695
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-13 56° 82° 6837 5068 3446 2334 1709
08-14 59° 83° 6886 5106 3475 2355 1725
08-15 57° 81° 6933 5144 3502 2374 1739
08-16 67° 79° 6984 5184 3533 2397 1757
08-17 68° 78° 7036 5226 3564 2421 1775
08-18 66° 79° 7086 5266 3594 2443 1792
08-19 59° 72° 7129 5300 3618 2458 1803
08-20 54° 72° 7170 5331 3639 2471 1811
08-21 48° 75° 7210 5360 3659 2483 1818
08-22 47° 77° 7251 5391 3679 2496 1825
08-23 50° 79° 7293 5423 3702 2510 1835
08-24 56° 84° 7342 5462 3730 2531 1850
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-25 64° 88° 7396 5506 3764 2557 1871
08-26 68° 93° 7454 5554 3803 2587 1897
08-27 71° 95° 7515 5605 3844 2620 1925
08-28 70° 83° 7570 5650 3878 2647 1946
08-29 66° 78° 7620 5690 3908 2669 1963
08-30 64° 88° 7674 5734 3943 2695 1985
08-31 67° 82° 7727 5777 3975 2720 2004
09-01 61° 78° 7775 5815 4003 2740 2019
09-02 50° 71° 7813 5843 4022 2750 2025
09-03 46° 74° 7851 5871 4040 2760 2030
09-04 49° 78° 7893 5903 4061 2774 2038
09-05 53° 84° 7939 5939 4087 2792 2051
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-06 58° 72° 7982 5972 4110 2807 2061
09-07 47° 61° 8014 5994 4122 2811 2061
09-08 41° 71° 8048 6018 4137 2817 2063
09-09 53° 80° 8093 6053 4161 2834 2074
09-10 53° 81° 8137 6088 4186 2850 2086
09-11 57° 84° 8186 6126 4214 2871 2101
09-12 53° 85° 8233 6163 4241 2890 2115
09-13 59° 82° 8282 6202 4270 2911 2131
09-14 58° 82° 8330 6240 4298 2931 2146
09-15 58° 84° 8379 6279 4327 2952 2162
09-16 54° 81° 8425 6315 4353 2970 2175
09-17 53° 79° 8469 6349 4377 2986 2186
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-18 58° 81° 8517 6387 4405 3006 2201
09-19 57° 82° 8565 6425 4433 3026 2216
09-20 56° 84° 8613 6463 4461 3046 2231
09-21 61° 87° 8665 6505 4493 3070 2250
09-22 56° 84° 8713 6543 4521 3090 2265
09-23 61° 70° 8756 6576 4544 3105 2275
09-24 60° 71° 8799 6610 4568 3120 2286
09-25 63° 76° 8847 6647 4595 3140 2300
09-26 59° 72° 8890 6680 4619 3155 2311
09-27 60° 74° 8936 6716 4644 3173 2323
09-28 66° 68° 8981 6751 4669 3190 2335
09-29 66° 69° 9026 6786 4694 3207 2347
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-30 62° 72° 9071 6821 4720 3224 2360
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-15 44° 59° 30 20 10 2 0
02-16 30° 42° 44 24 10 2 0
02-17 20° 31° 47 24 10 2 0
02-18 21° 44° 58 25 10 2 0
02-19 36° 54° 81 38 13 2 0
02-20 31° 45° 97 43 13 2 0
02-21 28° 40° 109 46 13 2 0
02-22 29° 32° 118 46 13 2 0
02-23 29° 43° 132 50 13 2 0
02-24 22° 33° 137 50 13 2 0
02-25 22° 38° 145 50 13 2 0
02-26 30° 49° 162 57 13 2 0
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 27° 35° 171 57 13 2 0
02-28 34° 47° 190 65 13 2 0
02-29 n/a n/a n/a n/a n/a n/a n/a
03-01 34° 52° 211 77 14 2 0
03-02 32° 42° 226 82 14 2 0
03-03 31° 37° 238 84 14 2 0
03-04 29° 41° 251 87 14 2 0
03-05 35° 50° 272 97 14 2 0
03-06 34° 44° 289 105 14 2 0
03-07 29° 42° 303 108 14 2 0
03-08 27° 44° 316 112 14 2 0
03-09 26° 44° 329 115 14 2 0
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-10 30° 34° 339 115 14 2 0
03-11 29° 39° 351 117 14 2 0
03-12 26° 34° 359 117 14 2 0
03-13 27° 32° 367 117 14 2 0
03-14 20° 35° 372 117 14 2 0
03-15 21° 46° 384 118 14 2 0
03-16 34° 56° 407 131 18 2 0
03-17 34° 50° 427 142 18 2 0
03-18 22° 33° 433 142 18 2 0
03-19 20° 40° 441 142 18 2 0
03-20 27° 50° 457 148 18 2 0
03-21 34° 56° 480 161 21 2 0
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-22 40° 50° 503 174 24 2 0
03-23 39° 51° 526 187 27 2 0
03-24 33° 42° 542 193 27 2 0
03-25 36° 52° 564 205 29 2 0
03-26 31° 56° 585 216 30 2 0
03-27 38° 45° 605 226 30 2 0
03-28 29° 50° 623 234 30 2 0
03-29 29° 48° 639 240 30 2 0
03-30 19° 44° 649 240 30 2 0
03-31 37° 57° 674 255 35 2 0
04-01 34° 59° 698 270 40 2 0
04-02 27° 43° 712 273 40 2 0
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-03 37° 64° 740 292 48 2 0
04-04 46° 57° 769 311 57 3 0
04-05 49° 75° 810 341 78 16 7
04-06 39° 53° 834 355 81 16 7
04-07 33° 50° 853 364 81 16 7
04-08 31° 50° 872 373 81 16 7
04-09 31° 58° 894 385 84 16 7
04-10 33° 67° 922 403 92 16 7
04-11 44° 76° 960 431 110 26 12
04-12 58° 82° 1008 469 138 46 27
04-13 58° 83° 1056 508 166 66 43
04-14 49° 83° 1101 542 190 82 54
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-15 54° 83° 1147 579 217 101 68
04-16 46° 74° 1185 607 235 111 73
04-17 36° 44° 1203 615 235 111 73
04-18 33° 49° 1223 624 235 111 73
04-19 32° 54° 1243 635 236 111 73
04-20 44° 67° 1277 658 250 117 73
04-21 47° 60° 1309 680 261 120 73
04-22 39° 54° 1333 694 266 120 73
04-23 34° 48° 1352 703 266 120 73
04-24 35° 47° 1371 712 266 120 73
04-25 30° 43° 1385 716 266 120 73
04-26 29° 52° 1404 725 266 120 73
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-27 32° 59° 1427 738 269 120 73
04-28 44° 53° 1453 754 275 120 73
04-29 49° 63° 1487 779 290 127 75
04-30 42° 54° 1514 795 296 127 75
05-01 37° 48° 1534 806 297 127 75
05-02 38° 44° 1553 814 297 127 75
05-03 38° 52° 1576 827 299 127 75
05-04 41° 62° 1605 846 309 128 75
05-05 40° 69° 1637 869 321 132 75
05-06 44° 70° 1672 894 336 139 77
05-07 55° 79° 1718 929 361 156 89
05-08 53° 64° 1754 955 378 165 93
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-09 48° 70° 1791 982 395 174 97
05-10 43° 75° 1828 1010 412 183 101
05-11 48° 80° 1870 1042 434 197 110
05-12 53° 81° 1915 1077 459 214 122
05-13 62° 77° 1963 1114 486 234 136
05-14 53° 68° 2002 1143 505 244 142
05-15 43° 74° 2038 1170 522 253 146
05-16 47° 80° 2080 1201 543 267 154
05-17 41° 58° 2108 1219 551 267 154
05-18 34° 65° 2135 1237 559 267 154
05-19 43° 79° 2175 1266 578 278 160
05-20 52° 61° 2209 1290 592 284 162
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-21 46° 75° 2248 1319 611 295 167
05-22 49° 75° 2288 1349 631 307 174
05-23 49° 80° 2330 1382 654 321 184
05-24 46° 71° 2367 1408 670 330 188
05-25 42° 64° 2398 1429 682 333 188
05-26 40° 71° 2432 1453 695 339 188
05-27 43° 78° 2471 1482 714 350 194
05-28 48° 81° 2513 1514 736 364 203
05-29 53° 86° 2560 1552 764 384 218
05-30 56° 87° 2610 1591 793 405 234
05-31 63° 87° 2663 1634 827 430 255
06-01 59° 89° 2715 1676 858 454 273
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-02 62° 90° 2769 1720 892 480 294
06-03 66° 88° 2824 1765 927 507 316
06-04 54° 77° 2867 1798 950 522 326
06-05 52° 79° 2911 1832 974 538 337
06-06 58° 76° 2955 1867 999 555 349
06-07 47° 74° 2994 1896 1018 565 355
06-08 48° 75° 3034 1925 1037 577 361
06-09 50° 78° 3076 1957 1060 591 371
06-10 53° 84° 3123 1994 1086 610 384
06-11 57° 71° 3165 2026 1109 624 394
06-12 53° 64° 3202 2053 1125 633 397
06-13 48° 68° 3238 2079 1141 641 400
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-14 50° 74° 3278 2109 1161 653 407
06-15 54° 72° 3319 2140 1182 666 415
06-16 58° 70° 3361 2172 1204 680 424
06-17 53° 81° 3406 2207 1229 697 436
06-18 51° 81° 3449 2241 1253 712 447
06-19 54° 84° 3497 2278 1280 732 461
06-20 64° 86° 3549 2320 1313 756 481
06-21 64° 85° 3602 2363 1345 781 500
06-22 62° 77° 3649 2401 1373 801 515
06-23 64° 69° 3694 2436 1398 818 527
06-24 65° 85° 3747 2479 1431 843 547
06-25 64° 85° 3800 2521 1463 867 566
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-26 64° 73° 3846 2557 1489 885 579
06-27 63° 69° 3890 2591 1513 901 590
06-28 59° 75° 3935 2626 1538 918 602
06-29 59° 81° 3983 2664 1567 938 618
06-30 64° 86° 4036 2708 1600 964 638
07-01 68° 84° 4090 2752 1634 990 659
07-02 69° 78° 4142 2793 1665 1013 677
07-03 68° 83° 4195 2837 1699 1038 698
07-04 65° 88° 4250 2881 1734 1065 720
07-05 67° 91° 4307 2929 1771 1094 744
07-06 71° 86° 4364 2975 1807 1123 767
07-07 63° 81° 4414 3015 1837 1145 784
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-08 67° 75° 4462 3054 1866 1165 800
07-09 61° 80° 4511 3093 1895 1186 816
07-10 58° 87° 4562 3133 1925 1209 833
07-11 64° 89° 4616 3177 1959 1235 854
07-12 63° 77° 4664 3215 1988 1255 870
07-13 61° 77° 4711 3252 2015 1274 884
07-14 60° 84° 4761 3292 2044 1296 900
07-15 66° 73° 4808 3330 2072 1315 915
07-16 65° 82° 4860 3371 2104 1339 934
07-17 61° 82° 4909 3411 2133 1361 950
07-18 56° 79° 4955 3446 2158 1378 962
07-19 59° 82° 5004 3485 2187 1399 978
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-20 65° 87° 5058 3529 2221 1425 999
07-21 63° 81° 5107 3569 2251 1446 1016
07-22 59° 84° 5157 3608 2280 1468 1032
07-23 59° 81° 5205 3646 2309 1488 1048
07-24 61° 84° 5256 3687 2339 1511 1065
07-25 63° 86° 5308 3730 2372 1536 1085
07-26 64° 86° 5361 3773 2405 1561 1105
07-27 69° 83° 5416 3817 2439 1587 1126
07-28 67° 86° 5470 3861 2474 1613 1148
07-29 67° 80° 5522 3903 2505 1637 1166
07-30 61° 80° 5570 3941 2533 1657 1181
07-31 56° 79° 5615 3977 2559 1674 1194
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-01 59° 77° 5661 4013 2585 1693 1207
08-02 60° 81° 5710 4051 2613 1713 1222
08-03 61° 86° 5761 4092 2645 1736 1241
08-04 66° 84° 5814 4135 2677 1761 1260
08-05 62° 81° 5863 4175 2707 1783 1277
08-06 67° 75° 5912 4214 2736 1804 1293
08-07 64° 72° 5958 4250 2762 1821 1306
08-08 61° 82° 6008 4289 2791 1843 1322
08-09 62° 81° 6057 4329 2821 1864 1339
08-10 64° 79° 6107 4368 2850 1886 1355
08-11 56° 79° 6152 4403 2876 1903 1368
08-12 68° 83° 6206 4447 2909 1929 1388
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-13 61° 82° 6255 4487 2939 1950 1405
08-14 64° 77° 6304 4525 2967 1971 1420
08-15 62° 70° 6348 4559 2992 1987 1432
08-16 58° 80° 6395 4596 3018 2006 1445
08-17 61° 75° 6441 4632 3045 2024 1459
08-18 55° 73° 6483 4664 3067 2038 1468
08-19 51° 77° 6525 4696 3088 2052 1476
08-20 60° 87° 6576 4737 3120 2075 1495
08-21 68° 83° 6630 4781 3153 2101 1515
08-22 58° 74° 6674 4815 3177 2117 1526
08-23 64° 83° 6725 4856 3209 2140 1545
08-24 70° 86° 6781 4903 3245 2168 1568
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-25 68° 75° 6831 4942 3274 2190 1584
08-26 61° 76° 6877 4979 3301 2208 1598
08-27 54° 72° 6918 5010 3322 2221 1606
08-28 51° 75° 6959 5041 3343 2234 1614
08-29 53° 77° 7002 5073 3366 2249 1624
08-30 53° 64° 7039 5100 3382 2258 1627
08-31 47° 73° 7077 5128 3400 2268 1632
09-01 50° 76° 7118 5159 3422 2281 1641
09-02 53° 82° 7164 5195 3447 2299 1653
09-03 64° 88° 7218 5239 3481 2325 1674
09-04 71° 89° 7276 5287 3519 2355 1699
09-05 69° 89° 7333 5334 3557 2384 1724
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-06 70° 80° 7386 5377 3590 2409 1744
09-07 64° 76° 7434 5415 3618 2429 1759
09-08 59° 67° 7475 5446 3639 2442 1767
09-09 59° 68° 7516 5478 3660 2456 1775
09-10 55° 71° 7557 5508 3681 2468 1783
09-11 54° 72° 7598 5539 3702 2481 1791
09-12 58° 71° 7641 5572 3724 2496 1800
09-13 49° 65° 7676 5597 3739 2503 1802
09-14 46° 70° 7712 5623 3755 2511 1805
09-15 47° 70° 7748 5649 3772 2519 1809
09-16 48° 71° 7786 5677 3789 2529 1813
09-17 56° 73° 7828 5709 3811 2543 1822
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-18 52° 67° 7866 5737 3829 2553 1827
09-19 47° 71° 7903 5764 3846 2562 1831
09-20 58° 76° 7948 5799 3872 2579 1844
09-21 55° 81° 7994 5835 3897 2597 1856
09-22 59° 78° 8041 5872 3924 2616 1870
09-23 51° 73° 8081 5902 3944 2628 1877
09-24 51° 76° 8122 5933 3966 2641 1886
09-25 62° 69° 8165 5967 3989 2656 1896
09-26 60° 70° 8208 5999 4012 2671 1906
09-27 59° 64° 8248 6029 4031 2683 1912
09-28 58° 63° 8287 6058 4050 2694 1918
09-29 60° 70° 8329 6091 4073 2708 1928
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-30 53° 74° 8371 6122 4094 2722 1936

 

Latest Updates

March 18th, 2024Timing crabgrass preemergence applications in spring

Don't miss this update from from Kevin Frank regarding timing of crabgrass preemergence herbicides.


 

February 12th, 2024Welcome to the 2024 GDD Tracking Season

2024 might be the year that if you blinked you missed winter. We've already experienced some very unseasonably warm weather in February with temperatures in the 60's. Temperatures are remaining relatively mild but I wouldn't be surprised if winter resurfaced yet as we move through the rest of February and March. 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 2024!
 

 

© Copyright 2004-2024, Department of Crop and Soil Sciences, Michigan State University.
Weather data and programming assistance provided by Enviro-Weather and NWS
All Rights Reserved. Custom web development by Dynamite Inc.