Please Note

The GDD models have only been “ground-truthed” in the Great Lakes region. Use of models outside of this region, including the North East, Great Plains and Transition Zones, should be used with caution. We do not recommend the GDD models we use for the mid/southern transition zone and southern states.

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/Annual Bluegrass Preemergence Timer (GDD 32)
through Thu, Mar. 28. 2024

 

GDD Total: 214 (Base 32) through Thu, Mar. 28, 2024

  

Lauderdale, MN

       

Forecast »

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 16° 29° 0 0 0 0 0
02-16 18° 0 0 0 0 0
02-17 27° 0 0 0 0 0
02-18 22° 35° 7 0 0 0 0
02-19 20° 38° 14 0 0 0 0
02-20 29° 45° 29 5 0 0 0
02-21 22° 47° 41 8 0 0 0
02-22 28° 51° 59 15 0 0 0
02-23 22° 35° 65 15 0 0 0
02-24 17° 43° 73 15 0 0 0
02-25 32° 48° 91 23 0 0 0
02-26 28° 62° 114 36 3 0 0
2024Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
02-27 15° 51° 125 37 3 0 0
02-28 19° 125 37 3 0 0
02-29 11° 49° 133 37 3 0 0
03-01 35° 57° 158 51 7 0 0
03-02 33° 61° 182 66 12 0 0
03-03 41° 65° 213 87 23 3 0
03-04 30° 40° 226 90 23 3 0
03-05 23° 47° 239 93 23 3 0
03-06 27° 52° 257 101 23 3 0
03-07 33° 45° 274 108 23 3 0
03-08 25° 38° 283 108 23 3 0
03-09 20° 39° 291 108 23 3 0
2024Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-10 18° 49° 303 110 23 3 0
03-11 33° 65° 330 127 30 3 0
03-12 42° 66° 362 149 42 7 0
03-13 37° 64° 391 167 50 7 0
03-14 43° 58° 419 186 59 8 0
03-15 30° 50° 437 193 59 8 0
03-16 33° 49° 456 202 59 8 0
03-17 24° 32° 462 202 59 8 0
03-18 20° 37° 468 202 59 8 0
03-19 33° 50° 488 212 59 8 0
03-20 17° 32° 491 212 59 8 0
03-21 21° 31° 495 212 59 8 0
2024Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-22 24° 32° 501 212 59 8 0
03-23 15° 32° 502 212 59 8 0
03-24 27° 31° 509 212 59 8 0
03-25 32° 36° 521 214 59 8 0
03-26 21° 34° 527 214 59 8 0
03-27 17° 29° 528 214 59 8 0
03-28 19° 36° 533 214 59 8 0
03-29 15° 43° 540 214 59 8 0
03-30 32° 42° 555 219 59 8 0
03-31 29° 46° 571 225 59 8 0
04-01 33° 47° 589 233 59 8 0
04-02 29° 48° 605 239 59 8 0
2024Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-03 30° 50° 623 247 59 8 0
04-04 33° 56° 646 260 61 8 0
2023Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
02-15 20° 37° 7 0 0 0 0
02-16 10° 18° 7 0 0 0 0
02-17 27° 7 0 0 0 0
02-18 17° 37° 12 0 0 0 0
02-19 23° 35° 18 0 0 0 0
02-20 15° 34° 21 0 0 0 0
02-21 15° 21 0 0 0 0
02-22 14° 22° 21 0 0 0 0
02-23 18° 21 0 0 0 0
02-24 -12° 11° 21 0 0 0 0
02-25 26° 21 0 0 0 0
02-26 -0° 32° 21 0 0 0 0
2023Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
02-27 29° 34° 30 0 0 0 0
02-28 16° 38° 35 0 0 0 0
02-29 n/a n/a n/a n/a n/a n/a n/a
03-01 24° 36° 43 0 0 0 0
03-02 15° 28° 43 0 0 0 0
03-03 23° 39° 53 0 0 0 0
03-04 20° 38° 60 0 0 0 0
03-05 15° 39° 65 0 0 0 0
03-06 32° 36° 77 2 0 0 0
03-07 29° 39° 89 4 0 0 0
03-08 29° 35° 99 4 0 0 0
03-09 30° 34° 108 4 0 0 0
2023Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-10 27° 33° 116 4 0 0 0
03-11 28° 31° 124 4 0 0 0
03-12 26° 32° 131 4 0 0 0
03-13 17° 29° 132 4 0 0 0
03-14 32° 132 4 0 0 0
03-15 29° 44° 147 8 0 0 0
03-16 24° 45° 159 11 0 0 0
03-17 22° 159 11 0 0 0
03-18 27° 159 11 0 0 0
03-19 39° 160 11 0 0 0
03-20 24° 38° 169 11 0 0 0
03-21 24° 39° 179 11 0 0 0
2023Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-22 29° 39° 191 13 0 0 0
03-23 24° 36° 199 13 0 0 0
03-24 13° 42° 204 13 0 0 0
03-25 29° 44° 219 18 0 0 0
03-26 26° 42° 231 20 0 0 0
03-27 27° 40° 243 21 0 0 0
03-28 16° 35° 246 21 0 0 0
03-29 12° 27° 246 21 0 0 0
03-30 19° 37° 252 21 0 0 0
03-31 32° 37° 265 24 0 0 0
04-01 26° 38° 275 24 0 0 0
04-02 27° 51° 292 31 0 0 0
2023Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-03 38° 45° 311 40 0 0 0
04-04 34° 39° 325 44 0 0 0
04-05 26° 37° 334 44 0 0 0
04-06 24° 36° 342 44 0 0 0
04-07 27° 48° 358 50 0 0 0
04-08 37° 65° 387 69 9 1 0
04-09 53° 66° 424 96 26 10 4
04-10 40° 73° 459 121 41 17 6
04-11 48° 81° 502 154 64 32 16
04-12 64° 89° 556 198 98 58 37
04-13 63° 87° 609 241 131 83 57
04-14 60° 83° 659 281 161 105 74
2023Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-15 40° 59° 686 298 168 105 74
04-16 31° 39° 699 301 168 105 74
04-17 31° 47° 716 308 168 105 74
04-18 30° 54° 736 318 168 105 74
04-19 36° 47° 756 328 168 105 74
04-20 37° 42° 773 335 168 105 74
04-21 33° 39° 787 339 168 105 74
04-22 32° 35° 799 341 168 105 74
04-23 29° 43° 813 345 168 105 74
04-24 32° 46° 830 352 168 105 74
04-25 30° 48° 847 359 168 105 74
04-26 30° 56° 868 370 170 105 74
2023Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-27 49° 60° 901 393 182 110 74
04-28 42° 52° 926 408 187 110 74
04-29 37° 51° 948 420 189 110 74
04-30 37° 48° 969 431 190 110 74
05-01 41° 55° 995 447 196 110 74
05-02 40° 61° 1023 465 204 110 74
05-03 35° 68° 1053 485 214 112 74
05-04 52° 75° 1094 516 235 125 82
05-05 49° 64° 1128 540 250 131 84
05-06 55° 61° 1165 567 266 140 87
05-07 56° 74° 1208 600 289 155 97
05-08 52° 75° 1249 631 310 168 105
2023Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-09 54° 67° 1287 659 328 178 110
05-10 57° 78° 1333 695 354 196 123
05-11 62° 77° 1380 732 381 215 137
05-12 63° 74° 1427 769 408 234 151
05-13 59° 68° 1468 800 430 247 160
05-14 50° 67° 1505 827 446 256 163
05-15 43° 75° 1542 854 463 265 167
05-16 53° 80° 1587 889 488 282 179
05-17 48° 66° 1622 914 503 289 181
05-18 56° 66° 1660 942 522 299 187
05-19 45° 60° 1691 963 532 302 187
05-20 42° 73° 1726 988 547 309 189
2023Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-21 48° 78° 1767 1019 568 322 197
05-22 54° 78° 1811 1053 592 338 208
05-23 57° 82° 1859 1091 620 358 223
05-24 54° 75° 1901 1123 643 372 232
05-25 56° 76° 1945 1157 666 388 243
05-26 52° 79° 1989 1191 690 404 254
05-27 51° 82° 2033 1225 714 420 265
05-28 53° 81° 2078 1260 739 437 277
05-29 63° 86° 2131 1303 772 462 297
05-30 63° 87° 2184 1346 805 487 317
05-31 65° 87° 2238 1390 839 513 338
06-01 71° 87° 2295 1437 876 542 362
2023Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-02 69° 84° 2350 1482 911 569 384
06-03 66° 88° 2405 1527 946 596 406
06-04 67° 89° 2461 1573 982 624 429
06-05 65° 85° 2514 1616 1015 649 449
06-06 66° 84° 2567 1659 1048 674 469
06-07 64° 79° 2617 1699 1078 696 486
06-08 59° 80° 2665 1737 1106 716 501
06-09 55° 84° 2713 1775 1134 736 516
06-10 58° 82° 2761 1813 1162 756 531
06-11 49° 69° 2798 1840 1179 765 535
06-12 51° 79° 2841 1873 1202 780 545
06-13 57° 85° 2890 1912 1231 801 561
2023Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-14 58° 81° 2937 1949 1258 820 575
06-15 57° 71° 2979 1981 1281 834 584
06-16 48° 77° 3020 2012 1301 847 592
06-17 57° 83° 3067 2049 1329 867 607
06-18 68° 77° 3118 2090 1359 889 624
06-19 64° 88° 3172 2134 1393 915 645
06-20 70° 90° 3230 2182 1431 945 670
06-21 66° 90° 3286 2228 1467 973 693
06-22 67° 90° 3342 2274 1504 1002 717
06-23 69° 90° 3400 2322 1541 1031 741
06-24 68° 84° 3454 2366 1575 1057 762
06-25 63° 73° 3500 2402 1601 1075 775
2023Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-26 63° 82° 3550 2442 1632 1097 792
06-27 60° 85° 3601 2483 1662 1120 810
06-28 69° 84° 3655 2527 1696 1146 831
06-29 62° 88° 3708 2570 1729 1171 851
06-30 64° 85° 3761 2613 1762 1196 871
07-01 65° 86° 3814 2656 1795 1221 891
07-02 66° 88° 3869 2701 1830 1248 913
07-03 70° 94° 3929 2751 1870 1280 940
07-04 66° 79° 3979 2791 1901 1302 957
07-05 64° 75° 4027 2829 1928 1322 972
07-06 53° 75° 4069 2861 1950 1336 981
07-07 55° 73° 4111 2893 1972 1350 990
2023Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-08 57° 79° 4157 2929 1998 1368 1003
07-09 55° 85° 4205 2967 2026 1388 1018
07-10 70° 92° 4264 3016 2065 1419 1044
07-11 53° 75° 4306 3048 2088 1433 1053
07-12 60° 78° 4353 3085 2114 1452 1067
07-13 62° 86° 4405 3127 2146 1476 1086
07-14 64° 87° 4459 3171 2180 1502 1107
07-15 61° 80° 4507 3209 2208 1522 1122
07-16 57° 77° 4552 3244 2233 1539 1134
07-17 56° 73° 4595 3277 2256 1554 1144
07-18 55° 81° 4641 3313 2282 1572 1157
07-19 64° 88° 4695 3357 2316 1598 1178
2023Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-20 63° 77° 4743 3395 2344 1618 1193
07-21 59° 81° 4791 3433 2372 1638 1208
07-22 60° 82° 4840 3472 2401 1659 1224
07-23 60° 84° 4891 3513 2432 1682 1242
07-24 62° 86° 4943 3555 2464 1706 1261
07-25 67° 92° 5000 3602 2502 1735 1285
07-26 69° 91° 5058 3650 2540 1766 1311
07-27 72° 94° 5119 3701 2581 1799 1339
07-28 69° 88° 5176 3748 2617 1827 1362
07-29 61° 79° 5224 3786 2645 1847 1377
07-30 59° 79° 5271 3823 2672 1866 1391
07-31 57° 83° 5319 3861 2700 1886 1406
2023Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-01 61° 85° 5370 3902 2731 1909 1424
08-02 70° 89° 5428 3950 2769 1939 1449
08-03 72° 93° 5488 4000 2809 1971 1476
08-04 66° 88° 5543 4045 2844 1998 1498
08-05 70° 82° 5597 4089 2879 2024 1519
08-06 67° 73° 5646 4128 2907 2045 1535
08-07 62° 82° 5696 4168 2937 2067 1552
08-08 59° 83° 5745 4207 2966 2088 1568
08-09 62° 79° 5794 4246 2995 2109 1584
08-10 63° 77° 5842 4284 3023 2129 1599
08-11 64° 85° 5894 4326 3056 2153 1618
08-12 61° 80° 5943 4365 3084 2174 1634
2023Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-13 63° 72° 5988 4400 3109 2191 1646
08-14 61° 70° 6032 4434 3133 2207 1657
08-15 53° 80° 6076 4468 3157 2223 1668
08-16 63° 84° 6128 4510 3189 2247 1687
08-17 62° 73° 6173 4545 3215 2265 1700
08-18 53° 78° 6217 4579 3238 2280 1710
08-19 66° 90° 6273 4625 3274 2308 1733
08-20 64° 78° 6322 4664 3303 2329 1749
08-21 61° 74° 6367 4699 3329 2346 1761
08-22 69° 97° 6428 4750 3369 2379 1789
08-23 78° 94° 6493 4805 3414 2416 1821
08-24 68° 84° 6547 4849 3448 2442 1842
2023Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-25 68° 86° 6602 4894 3483 2469 1864
08-26 60° 71° 6645 4927 3506 2484 1874
08-27 53° 75° 6687 4959 3528 2498 1883
08-28 61° 84° 6738 5000 3559 2521 1901
08-29 62° 80° 6787 5039 3588 2542 1917
08-30 58° 77° 6832 5074 3613 2559 1929
08-31 58° 80° 6879 5111 3640 2578 1943
09-01 61° 89° 6932 5154 3673 2603 1963
09-02 70° 87° 6988 5200 3710 2632 1987
09-03 74° 96° 7052 5254 3753 2667 2017
09-04 73° 96° 7114 5306 3795 2701 2046
09-05 74° 89° 7174 5356 3835 2733 2073
2023Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-06 60° 75° 7220 5392 3861 2751 2086
09-07 56° 63° 7257 5419 3879 2760 2090
09-08 48° 76° 7297 5449 3898 2772 2097
09-09 58° 75° 7341 5483 3922 2788 2108
09-10 60° 71° 7385 5517 3946 2804 2119
09-11 51° 71° 7424 5546 3965 2815 2125
09-12 52° 62° 7459 5571 3981 2823 2128
09-13 42° 65° 7491 5593 3992 2826 2128
09-14 49° 82° 7534 5626 4015 2841 2138
09-15 58° 73° 7578 5660 4039 2857 2148
09-16 53° 70° 7618 5690 4059 2869 2155
09-17 48° 71° 7655 5717 4076 2878 2159
2023Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-18 50° 76° 7696 5748 4097 2891 2167
09-19 60° 79° 7743 5785 4125 2910 2182
09-20 59° 84° 7793 5825 4154 2932 2198
09-21 60° 83° 7842 5864 4183 2953 2215
09-22 62° 73° 7888 5900 4209 2971 2228
09-23 64° 73° 7935 5937 4236 2990 2241
09-24 60° 70° 7977 5969 4259 3005 2251
09-25 60° 63° 8017 5999 4278 3016 2258
09-26 61° 65° 8058 6030 4299 3029 2265
09-27 60° 71° 8101 6063 4323 3045 2276
09-28 61° 70° 8145 6097 4346 3060 2287
09-29 60° 72° 8189 6131 4371 3076 2298
2023Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-30 66° 85° 8243 6175 4404 3102 2318

 

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!