“Flashback” to 2023

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Crabgrass/Annual Bluegrass Preemergence Timer (GDD 32)
through Thu, Apr. 27. 2023

 

GDD Total: 738 (Base 32) through Thu, Apr. 27, 2023

  

Dearborn, MI

        

Jump back to 2024

4/21

4/22

4/23

4/24

4/25

4/26

4/27

4/28

4/29

4/30

5/1

5/2

5/3

Done

801

Late

500

Optimum

250

Early

171

Under

0

 

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 979 428 172 80
04-29 61° 79° 1727 1017 456 192 95
04-30 61° 74° 1773 1053 481 210 107
05-01 54° 77° 1816 1086 505 225 118
05-02 60° 77° 1863 1123 531 244 131
05-03 58° 71° 1905 1155 554 258 141
05-04 51° 67° 1942 1182 570 267 145
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!
 

 

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