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Crabgrass Germination Prediction (GDD 50)
through Fri, Apr. 19. 2024

 

GDD Total: 0 (Base 50) through Fri, Apr. 19, 2024

  

Kalamazoo, MI

        

Forecast »

“Flashback” to 2023

4/13

4/14

4/15

4/16

4/17

4/18

4/20

4/21

4/22

4/23

4/24

4/25

Done

1401

Late

601

Germination

200

Early

100

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 31° 38° 12 2 0 0 0
02-16 23° 31° 18 2 0 0 0
02-17 17° 24° 18 2 0 0 0
02-18 17° 36° 22 2 0 0 0
02-19 15° 44° 30 2 0 0 0
02-20 22° 52° 45 8 0 0 0
02-21 38° 62° 73 26 8 0 0
02-22 37° 57° 98 41 13 0 0
02-23 29° 50° 116 48 13 0 0
02-24 16° 31° 118 48 13 0 0
02-25 26° 55° 136 56 13 0 0
02-26 33° 63° 162 73 19 0 0
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 54° 72° 203 103 40 13 8
02-28 18° 60° 220 110 40 13 8
02-29 17° 37° 225 110 40 13 8
03-01 27° 46° 239 114 40 13 8
03-02 39° 52° 263 128 44 13 8
03-03 40° 66° 294 149 55 16 8
03-04 51° 71° 333 178 74 27 14
03-05 43° 63° 364 199 85 30 14
03-06 36° 48° 384 210 85 30 14
03-07 32° 47° 402 217 85 30 14
03-08 37° 52° 425 230 88 30 14
03-09 32° 51° 445 240 88 30 14
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-10 30° 36° 456 241 88 30 14
03-11 26° 61° 478 253 90 30 14
03-12 46° 69° 513 278 105 38 16
03-13 48° 70° 550 306 123 47 20
03-14 42° 61° 580 325 132 48 20
03-15 34° 52° 601 336 133 48 20
03-16 32° 58° 624 349 136 48 20
03-17 29° 41° 637 352 136 48 20
03-18 22° 32° 643 352 136 48 20
03-19 27° 46° 658 357 136 48 20
03-20 24° 36° 666 357 136 48 20
03-21 17° 36° 671 357 136 48 20
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-22 28° 35° 680 357 136 48 20
03-23 27° 36° 689 357 136 48 20
03-24 22° 43° 700 358 136 48 20
03-25 33° 66° 727 376 144 48 20
03-26 41° 61° 757 395 153 49 20
03-27 31° 39° 770 398 153 49 20
03-28 27° 46° 784 402 153 49 20
03-29 23° 53° 800 408 153 49 20
03-30 40° 56° 825 424 159 49 20
03-31 38° 51° 848 436 161 49 20
04-01 40° 56° 874 452 167 49 20
04-02 40° 50° 898 466 171 49 20
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-03 35° 40° 913 471 171 49 20
04-04 35° 43° 930 478 171 49 20
04-05 35° 48° 949 488 171 49 20
04-06 30° 57° 971 499 172 49 20
04-07 34° 58° 995 513 176 49 20
04-08 44° 73° 1031 539 192 58 24
04-09 49° 68° 1068 566 209 67 28
04-10 39° 65° 1098 586 219 68 28
04-11 47° 54° 1126 604 227 68 28
04-12 45° 55° 1154 622 235 68 28
04-13 39° 59° 1181 639 242 68 28
04-14 54° 74° 1223 671 264 82 36
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-15 50° 68° 1260 698 281 91 40
04-16 47° 71° 1297 725 298 100 45
04-17 56° 68° 1337 755 318 112 52
04-18 48° 58° 1368 776 329 115 52
04-19 44° 52° 0 0 0 0 0
04-20 36° 47° 1413 801 335 115 52
04-21 32° 54° 1434 812 336 115 52
04-22 35° 63° 1461 829 343 115 52
04-23 46° 62° 1493 851 355 119 52
04-24 35° 54° 1516 864 358 119 52
04-25 32° 59° 1539 877 361 119 52
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-15 38° 54° 24 14 4 0 0
02-16 26° 37° 33 14 4 0 0
02-17 18° 25° 33 14 4 0 0
02-18 19° 43° 42 14 4 0 0
02-19 36° 53° 64 26 6 0 0
02-20 26° 45° 78 29 6 0 0
02-21 27° 37° 88 29 6 0 0
02-22 29° 33° 97 29 6 0 0
02-23 30° 42° 111 34 6 0 0
02-24 23° 29° 115 34 6 0 0
02-25 26° 34° 122 34 6 0 0
02-26 25° 41° 133 34 6 0 0
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 32° 40° 147 39 6 0 0
02-28 34° 46° 166 47 6 0 0
02-29 n/a n/a n/a n/a n/a n/a n/a
03-01 36° 55° 189 60 9 0 0
03-02 31° 41° 203 65 9 0 0
03-03 30° 36° 214 66 9 0 0
03-04 28° 41° 227 68 9 0 0
03-05 31° 48° 244 75 9 0 0
03-06 35° 42° 261 82 9 0 0
03-07 31° 43° 276 87 9 0 0
03-08 28° 44° 290 91 9 0 0
03-09 31° 44° 306 97 9 0 0
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-10 30° 36° 316 97 9 0 0
03-11 28° 38° 328 99 9 0 0
03-12 30° 34° 337 99 9 0 0
03-13 25° 32° 344 99 9 0 0
03-14 20° 35° 349 99 9 0 0
03-15 18° 45° 359 99 9 0 0
03-16 38° 52° 382 112 12 0 0
03-17 31° 50° 400 120 12 0 0
03-18 18° 29° 402 120 12 0 0
03-19 16° 35° 406 120 12 0 0
03-20 27° 49° 422 126 12 0 0
03-21 34° 53° 443 138 14 0 0
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-22 40° 48° 465 150 16 0 0
03-23 36° 47° 485 159 16 0 0
03-24 32° 46° 502 167 16 0 0
03-25 34° 41° 518 172 16 0 0
03-26 31° 47° 535 179 16 0 0
03-27 34° 49° 554 188 16 0 0
03-28 27° 47° 569 193 16 0 0
03-29 25° 39° 579 193 16 0 0
03-30 17° 47° 589 193 16 0 0
03-31 45° 62° 620 215 27 4 0
04-01 35° 57° 644 229 31 4 0
04-02 30° 49° 662 236 31 4 0
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-03 42° 54° 688 252 37 4 0
04-04 44° 57° 716 271 46 4 0
04-05 43° 71° 751 296 60 11 2
04-06 34° 46° 769 303 60 11 2
04-07 32° 50° 788 312 60 11 2
04-08 36° 58° 813 327 65 11 2
04-09 37° 65° 841 346 74 12 2
04-10 41° 67° 873 368 86 16 2
04-11 50° 75° 914 398 107 28 9
04-12 59° 80° 961 436 134 48 24
04-13 57° 81° 1008 473 161 66 37
04-14 47° 82° 1051 505 184 81 47
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-15 59° 80° 1098 543 211 100 61
04-16 40° 69° 1130 565 223 105 61
04-17 32° 39° 1144 568 223 105 61
04-18 33° 47° 1161 576 223 105 61
04-19 32° 64° 1187 592 229 105 61
04-20 47° 78° 1228 622 249 117 69
04-21 45° 62° 1259 643 260 120 69
04-22 35° 49° 1279 654 261 120 69
04-23 35° 43° 1297 661 261 120 69
04-24 34° 48° 1315 670 261 120 69
04-25 33° 45° 1333 677 261 120 69
04-26 31° 52° 1352 687 261 120 69
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-27 31° 63° 1377 701 265 120 69
04-28 44° 56° 1405 719 273 120 69
04-29 43° 64° 1436 741 285 123 69
04-30 38° 49° 1458 752 286 123 69
05-01 36° 42° 1475 759 286 123 69
05-02 38° 44° 1494 768 286 123 69
05-03 39° 50° 1517 781 289 123 69
05-04 37° 64° 1546 800 298 124 69
05-05 47° 72° 1583 828 316 134 73
05-06 53° 68° 1621 856 334 144 78
05-07 55° 76° 1665 889 358 159 89
05-08 53° 61° 1700 915 373 167 91
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-09 46° 70° 1736 941 389 175 94
05-10 45° 77° 1775 970 408 186 100
05-11 48° 80° 1817 1002 430 200 109
05-12 56° 76° 1861 1036 454 216 120
05-13 64° 70° 1906 1071 479 233 132
05-14 56° 69° 1947 1102 500 246 140
05-15 46° 73° 1985 1129 517 255 145
05-16 44° 75° 2022 1157 535 265 149
05-17 45° 63° 2054 1179 547 269 149
05-18 41° 70° 2088 1202 561 274 150
05-19 52° 70° 2127 1232 580 286 156
05-20 45° 62° 2159 1253 591 289 156
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-21 44° 74° 2196 1280 609 298 160
05-22 46° 75° 2234 1309 627 309 166
05-23 52° 81° 2279 1343 652 325 177
05-24 52° 73° 2320 1374 672 338 185
05-25 44° 68° 2353 1398 686 344 186
05-26 40° 75° 2389 1423 702 351 188
05-27 44° 78° 2428 1452 720 362 194
05-28 49° 80° 2470 1485 743 377 204
05-29 52° 85° 2517 1522 770 396 218
05-30 60° 88° 2569 1564 802 420 237
05-31 68° 89° 2626 1610 838 448 260
06-01 65° 89° 2681 1655 873 475 282
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-02 60° 90° 2734 1698 907 500 302
06-03 62° 88° 2787 1742 940 526 323
06-04 58° 82° 2835 1780 968 546 338
06-05 51° 82° 2880 1814 992 562 349
06-06 57° 78° 2925 1850 1018 580 362
06-07 47° 74° 2964 1879 1037 591 368
06-08 46° 74° 3003 1907 1055 601 373
06-09 49° 75° 3043 1937 1075 613 380
06-10 50° 83° 3087 1971 1099 629 391
06-11 58° 67° 3127 2002 1120 642 399
06-12 51° 61° 3161 2026 1134 648 400
06-13 51° 64° 3197 2051 1149 655 402
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-14 55° 71° 3238 2082 1171 668 410
06-15 51° 78° 3280 2115 1193 683 420
06-16 55° 75° 3323 2148 1216 698 430
06-17 49° 79° 3365 2180 1238 712 439
06-18 52° 84° 3412 2216 1264 730 452
06-19 62° 86° 3464 2258 1296 754 471
06-20 64° 89° 3518 2303 1331 781 493
06-21 64° 89° 3573 2347 1365 807 514
06-22 63° 83° 3623 2388 1396 830 532
06-23 64° 79° 3673 2428 1426 852 549
06-24 63° 86° 3725 2470 1458 876 568
06-25 67° 83° 3778 2513 1491 901 588
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-26 62° 69° 3821 2546 1514 916 598
06-27 59° 71° 3865 2579 1537 931 608
06-28 50° 82° 3908 2613 1561 947 619
06-29 63° 87° 3962 2656 1595 972 639
06-30 70° 88° 4019 2703 1631 1001 663
07-01 67° 84° 4072 2746 1664 1026 683
07-02 69° 78° 4123 2788 1696 1050 702
07-03 66° 83° 4176 2830 1728 1074 721
07-04 62° 89° 4229 2873 1762 1099 741
07-05 69° 90° 4286 2921 1799 1129 766
07-06 67° 79° 4337 2962 1830 1152 784
07-07 58° 82° 4385 2999 1857 1171 798
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-08 63° 73° 4431 3035 1883 1189 811
07-09 54° 81° 4476 3071 1909 1207 824
07-10 57° 86° 4526 3110 1938 1228 840
07-11 66° 87° 4580 3154 1972 1254 861
07-12 62° 77° 4627 3192 2000 1274 876
07-13 62° 75° 4674 3229 2027 1293 890
07-14 60° 89° 4726 3271 2059 1317 909
07-15 66° 81° 4778 3313 2091 1341 928
07-16 64° 79° 4827 3352 2120 1362 944
07-17 61° 76° 4874 3388 2146 1380 957
07-18 56° 78° 4919 3423 2171 1397 969
07-19 57° 84° 4967 3462 2200 1418 985
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-20 63° 86° 5020 3504 2233 1442 1004
07-21 63° 81° 5070 3544 2262 1464 1021
07-22 58° 83° 5118 3583 2291 1485 1037
07-23 62° 77° 5166 3620 2318 1504 1051
07-24 58° 85° 5215 3659 2348 1525 1067
07-25 59° 87° 5266 3700 2378 1548 1085
07-26 67° 82° 5318 3743 2411 1573 1105
07-27 68° 87° 5374 3788 2446 1600 1127
07-28 72° 87° 5431 3836 2484 1630 1152
07-29 69° 82° 5484 3879 2517 1655 1172
07-30 62° 77° 5532 3917 2545 1675 1187
07-31 55° 77° 5576 3951 2569 1691 1198
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-01 56° 79° 5622 3986 2595 1708 1210
08-02 64° 81° 5672 4027 2625 1731 1228
08-03 61° 84° 5723 4067 2655 1753 1245
08-04 65° 83° 5775 4110 2688 1778 1265
08-05 65° 79° 5825 4150 2718 1800 1282
08-06 64° 70° 5870 4184 2743 1816 1293
08-07 63° 75° 5917 4221 2770 1835 1307
08-08 59° 80° 5964 4259 2797 1855 1322
08-09 62° 80° 6013 4298 2826 1876 1338
08-10 63° 78° 6061 4336 2854 1896 1353
08-11 60° 81° 6110 4374 2883 1916 1368
08-12 64° 78° 6159 4414 2912 1938 1385
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-13 62° 79° 6208 4452 2941 1958 1400
08-14 66° 78° 6258 4492 2970 1980 1417
08-15 62° 72° 6302 4527 2995 1997 1429
08-16 51° 78° 6345 4560 3018 2012 1439
08-17 61° 75° 6391 4596 3044 2030 1452
08-18 54° 73° 6432 4627 3065 2043 1460
08-19 50° 77° 6474 4659 3087 2057 1469
08-20 65° 87° 6529 4703 3121 2083 1490
08-21 68° 84° 6582 4747 3155 2109 1511
08-22 62° 78° 6631 4785 3183 2129 1526
08-23 65° 92° 6688 4832 3220 2158 1550
08-24 77° 93° 6751 4885 3263 2193 1580
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-25 71° 80° 6804 4928 3297 2218 1600
08-26 65° 77° 6853 4968 3326 2240 1617
08-27 53° 75° 6895 5000 3348 2254 1626
08-28 49° 77° 6936 5031 3369 2267 1634
08-29 55° 78° 6981 5065 3393 2283 1645
08-30 54° 73° 7022 5097 3415 2297 1654
08-31 46° 74° 7060 5125 3433 2307 1659
09-01 49° 79° 7103 5157 3455 2321 1668
09-02 56° 83° 7150 5195 3483 2341 1683
09-03 64° 89° 7205 5239 3518 2367 1704
09-04 70° 89° 7262 5287 3555 2397 1729
09-05 73° 91° 7322 5336 3595 2428 1755
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-06 68° 80° 7374 5378 3626 2452 1774
09-07 63° 74° 7420 5415 3653 2471 1788
09-08 59° 65° 7461 5445 3673 2483 1795
09-09 52° 73° 7501 5476 3694 2496 1803
09-10 50° 75° 7542 5506 3714 2508 1810
09-11 57° 66° 7581 5536 3734 2520 1817
09-12 55° 69° 7622 5566 3754 2532 1824
09-13 49° 66° 7657 5592 3770 2540 1827
09-14 45° 70° 7693 5617 3785 2547 1829
09-15 46° 72° 7730 5644 3802 2556 1833
09-16 50° 72° 7768 5673 3821 2567 1839
09-17 55° 71° 7809 5704 3842 2580 1847
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-18 49° 66° 7845 5730 3858 2588 1850
09-19 45° 65° 7878 5753 3871 2593 1850
09-20 59° 80° 7926 5790 3898 2612 1864
09-21 59° 80° 7973 5828 3926 2632 1879
09-22 60° 81° 8022 5866 3954 2652 1894
09-23 55° 75° 8065 5899 3977 2667 1904
09-24 50° 77° 8106 5931 3999 2681 1913
09-25 52° 68° 8144 5959 4017 2691 1918
09-26 62° 74° 8190 5995 4043 2709 1931
09-27 61° 66° 8232 6026 4065 2722 1939
09-28 60° 64° 8272 6056 4084 2734 1946
09-29 56° 69° 8312 6087 4105 2747 1954
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-30 54° 77° 8356 6120 4128 2762 1964

 

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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