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.

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Crabgrass/Annual Bluegrass Preemergence Timer (GDD 32)
through Mon, Apr. 22. 2024

 

GDD Total: 574 (Base 32) through Mon, Apr. 22, 2024

  

Minneapolis, MN

        

Forecast »

“Flashback” to 2023

4/16

4/17

4/18

4/19

4/20

4/21

4/22

4/23

4/24

4/25

4/26

4/27

4/28

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° 28° 0 0 0 0 0
02-16 10° 19° 0 0 0 0 0
02-17 7° 28° 0 0 0 0 0
02-18 22° 35° 7 0 0 0 0
02-19 20° 39° 14 0 0 0 0
02-20 29° 44° 29 5 0 0 0
02-21 23° 48° 42 8 0 0 0
02-22 28° 50° 60 15 0 0 0
02-23 22° 35° 66 15 0 0 0
02-24 17° 45° 75 15 0 0 0
02-25 32° 48° 93 23 0 0 0
02-26 29° 63° 117 37 4 0 0
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 14° 49° 127 37 4 0 0
02-28 4° 19° 127 37 4 0 0
02-29 12° 51° 136 37 4 0 0
03-01 36° 58° 161 52 9 0 0
03-02 33° 62° 186 68 14 0 0
03-03 41° 68° 219 90 27 5 0
03-04 29° 40° 232 93 27 5 0
03-05 23° 47° 245 96 27 5 0
03-06 26° 54° 263 104 27 5 0
03-07 33° 47° 281 112 27 5 0
03-08 24° 38° 290 112 27 5 0
03-09 22° 40° 299 112 27 5 0
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-10 18° 50° 312 114 27 5 0
03-11 33° 66° 339 132 34 5 0
03-12 42° 66° 372 154 47 9 0
03-13 38° 62° 400 172 55 9 0
03-14 43° 58° 428 191 63 10 0
03-15 31° 50° 447 199 63 10 0
03-16 34° 50° 466 209 63 10 0
03-17 25° 32° 473 209 63 10 0
03-18 21° 37° 480 209 63 10 0
03-19 34° 50° 500 219 63 10 0
03-20 17° 31° 502 219 63 10 0
03-21 22° 32° 507 219 63 10 0
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-22 24° 32° 513 219 63 10 0
03-23 15° 34° 516 219 63 10 0
03-24 27° 32° 523 219 63 10 0
03-25 32° 36° 535 221 63 10 0
03-26 21° 34° 541 221 63 10 0
03-27 17° 28° 542 221 63 10 0
03-28 19° 36° 547 221 63 10 0
03-29 22° 44° 558 222 63 10 0
03-30 34° 44° 575 229 63 10 0
03-31 33° 45° 591 235 63 10 0
04-01 32° 44° 607 241 63 10 0
04-02 33° 41° 622 246 63 10 0
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-03 34° 50° 643 257 63 10 0
04-04 33° 52° 663 267 64 10 0
04-05 30° 57° 685 279 66 10 0
04-06 34° 59° 710 293 70 10 0
04-07 39° 49° 732 306 73 10 0
04-08 42° 49° 755 319 76 10 0
04-09 40° 61° 784 338 85 10 0
04-10 42° 69° 818 362 98 16 1
04-11 44° 60° 848 382 108 18 1
04-12 43° 60° 877 401 118 19 1
04-13 38° 84° 916 430 137 30 7
04-14 46° 71° 953 457 154 39 10
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-15 47° 60° 984 478 165 43 10
04-16 47° 56° 1014 498 175 44 10
04-17 44° 53° 1040 514 181 44 10
04-18 45° 50° 1066 530 187 44 10
04-19 33° 39° 1080 534 187 44 10
04-20 31° 47° 1097 541 187 44 10
04-21 32° 53° 1118 551 187 44 10
04-22 40° 68° 1150 574 199 48 10
04-23 47° 60° 1181 595 211 52 10
04-24 33° 57° 1204 608 214 52 10
04-25 42° 68° 1237 631 227 57 10
04-26 51° 63° 1272 656 242 64 12
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-27 54° 62° 1309 683 258 72 16
04-28 44° 54° 1336 700 265 72 16
04-29 43° 61° 1366 720 275 74 16
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-15 18° 37° 6 0 0 0 0
02-16 9° 19° 6 0 0 0 0
02-17 3° 28° 6 0 0 0 0
02-18 21° 38° 13 0 0 0 0
02-19 22° 35° 19 0 0 0 0
02-20 13° 34° 21 0 0 0 0
02-21 4° 15° 21 0 0 0 0
02-22 13° 22° 21 0 0 0 0
02-23 3° 18° 21 0 0 0 0
02-24 -10° 12° 21 0 0 0 0
02-25 1° 26° 21 0 0 0 0
02-26 1° 33° 21 0 0 0 0
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 28° 34° 30 0 0 0 0
02-28 17° 38° 36 0 0 0 0
02-29 n/a n/a n/a n/a n/a n/a n/a
03-01 24° 37° 44 0 0 0 0
03-02 14° 28° 44 0 0 0 0
03-03 24° 39° 54 0 0 0 0
03-04 22° 37° 62 0 0 0 0
03-05 15° 39° 67 0 0 0 0
03-06 29° 36° 77 1 0 0 0
03-07 27° 39° 88 2 0 0 0
03-08 31° 35° 99 3 0 0 0
03-09 30° 34° 109 3 0 0 0
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-10 27° 33° 117 3 0 0 0
03-11 28° 31° 125 3 0 0 0
03-12 26° 32° 132 3 0 0 0
03-13 17° 29° 133 3 0 0 0
03-14 6° 32° 133 3 0 0 0
03-15 29° 44° 147 7 0 0 0
03-16 23° 45° 159 9 0 0 0
03-17 7° 21° 159 9 0 0 0
03-18 7° 27° 159 9 0 0 0
03-19 9° 39° 161 9 0 0 0
03-20 26° 38° 171 9 0 0 0
03-21 26° 40° 182 10 0 0 0
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-22 29° 40° 194 12 0 0 0
03-23 23° 36° 201 12 0 0 0
03-24 12° 42° 206 12 0 0 0
03-25 29° 43° 221 16 0 0 0
03-26 26° 41° 232 18 0 0 0
03-27 23° 38° 241 18 0 0 0
03-28 18° 34° 245 18 0 0 0
03-29 11° 27° 245 18 0 0 0
03-30 20° 36° 251 18 0 0 0
03-31 32° 37° 264 20 0 0 0
04-01 26° 38° 274 20 0 0 0
04-02 30° 51° 292 29 0 0 0
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-03 36° 43° 310 37 0 0 0
04-04 33° 37° 323 40 0 0 0
04-05 25° 36° 332 40 0 0 0
04-06 23° 35° 339 40 0 0 0
04-07 30° 49° 356 47 0 0 0
04-08 37° 66° 386 67 10 2 0
04-09 54° 66° 424 95 28 12 5
04-10 41° 72° 459 120 43 19 7
04-11 52° 82° 504 155 67 35 19
04-12 64° 88° 558 199 102 62 40
04-13 63° 89° 611 242 135 87 60
04-14 58° 84° 660 281 164 108 76
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-15 39° 57° 687 298 171 108 76
04-16 31° 39° 700 300 171 108 76
04-17 30° 48° 717 308 171 108 76
04-18 30° 56° 738 318 171 108 76
04-19 36° 48° 758 329 172 108 76
04-20 37° 41° 775 336 172 108 76
04-21 32° 39° 789 340 172 108 76
04-22 32° 35° 801 341 172 108 76
04-23 29° 44° 815 346 172 108 76
04-24 32° 47° 833 353 172 108 76
04-25 30° 49° 850 361 172 108 76
04-26 31° 57° 872 373 173 108 76
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-27 50° 61° 905 396 187 113 76
04-28 42° 52° 930 411 191 113 76
04-29 38° 52° 953 424 195 113 76
04-30 38° 49° 975 435 196 113 76
05-01 41° 55° 1001 452 202 113 76
05-02 40° 61° 1029 470 211 114 76
05-03 35° 69° 1059 490 221 116 76
05-04 50° 75° 1100 521 242 129 84
05-05 48° 66° 1135 546 257 136 86
05-06 55° 62° 1172 573 273 144 90
05-07 55° 75° 1215 605 296 159 100
05-08 51° 76° 1256 637 317 172 108
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-09 54° 68° 1295 666 336 184 114
05-10 57° 79° 1341 702 362 201 127
05-11 62° 78° 1388 739 390 221 141
05-12 64° 75° 1436 776 417 240 156
05-13 59° 67° 1477 808 438 253 164
05-14 51° 67° 1514 835 455 263 168
05-15 43° 76° 1551 862 473 272 172
05-16 53° 81° 1596 897 497 289 184
05-17 49° 67° 1632 923 513 297 187
05-18 57° 66° 1671 952 533 308 193
05-19 44° 60° 1702 973 543 310 193
05-20 42° 73° 1737 998 559 318 196
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-21 48° 78° 1779 1029 580 331 204
05-22 56° 78° 1823 1064 605 348 216
05-23 58° 83° 1872 1103 633 368 231
05-24 54° 75° 1915 1135 656 383 241
05-25 58° 76° 1960 1170 681 400 253
05-26 53° 79° 2004 1205 705 416 264
05-27 52° 82° 2049 1240 730 433 276
05-28 55° 81° 2095 1276 756 451 289
05-29 65° 86° 2148 1319 789 477 310
05-30 64° 87° 2201 1362 823 502 330
05-31 66° 88° 2256 1407 857 529 352
06-01 71° 87° 2313 1454 895 558 376
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-02 71° 85° 2369 1500 930 585 398
06-03 67° 89° 2425 1545 966 613 421
06-04 66° 89° 2480 1591 1002 641 444
06-05 66° 84° 2533 1634 1035 666 464
06-06 66° 85° 2587 1678 1068 692 485
06-07 64° 80° 2637 1718 1098 713 502
06-08 61° 81° 2686 1757 1128 735 518
06-09 57° 84° 2735 1796 1156 756 534
06-10 59° 82° 2784 1835 1185 776 549
06-11 48° 70° 2821 1862 1202 785 554
06-12 52° 80° 2865 1896 1227 802 565
06-13 58° 86° 2915 1936 1257 824 582
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-14 59° 82° 2964 1975 1285 844 597
06-15 58° 72° 3007 2008 1308 859 608
06-16 48° 78° 3048 2039 1330 873 616
06-17 58° 84° 3097 2078 1359 894 632
06-18 69° 78° 3149 2120 1390 918 651
06-19 64° 89° 3204 2164 1425 944 672
06-20 71° 91° 3262 2213 1464 975 698
06-21 68° 91° 3320 2261 1501 1004 722
06-22 69° 91° 3377 2308 1539 1034 747
06-23 70° 90° 3436 2356 1577 1064 772
06-24 69° 84° 3490 2401 1611 1091 794
06-25 63° 74° 3536 2437 1638 1109 807
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-26 63° 82° 3587 2478 1669 1132 825
06-27 62° 85° 3639 2519 1700 1155 843
06-28 69° 84° 3693 2564 1734 1182 865
06-29 63° 89° 3747 2608 1768 1207 885
06-30 64° 85° 3799 2650 1801 1232 905
07-01 65° 86° 3853 2694 1835 1258 926
07-02 66° 89° 3909 2740 1870 1285 948
07-03 71° 93° 3969 2790 1910 1318 976
07-04 67° 79° 4020 2831 1942 1341 994
07-05 63° 75° 4068 2869 1969 1360 1009
07-06 53° 76° 4110 2901 1992 1375 1018
07-07 55° 74° 4153 2934 2014 1390 1028
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-08 57° 79° 4199 2970 2041 1408 1041
07-09 56° 85° 4248 3008 2069 1428 1056
07-10 70° 92° 4307 3058 2108 1459 1082
07-11 54° 75° 4349 3090 2131 1474 1092
07-12 61° 79° 4397 3128 2159 1494 1107
07-13 62° 86° 4449 3170 2191 1518 1126
07-14 64° 88° 4503 3214 2225 1544 1147
07-15 62° 80° 4552 3253 2253 1564 1163
07-16 58° 78° 4598 3289 2279 1582 1175
07-17 56° 73° 4640 3321 2302 1597 1185
07-18 57° 82° 4688 3359 2329 1616 1199
07-19 65° 88° 4742 3403 2364 1643 1221
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-20 63° 77° 4791 3442 2392 1663 1236
07-21 60° 81° 4839 3480 2421 1684 1252
07-22 60° 84° 4889 3520 2451 1706 1269
07-23 61° 85° 4940 3561 2482 1729 1287
07-24 64° 87° 4993 3604 2515 1754 1307
07-25 68° 93° 5051 3652 2553 1784 1332
07-26 69° 91° 5109 3700 2591 1814 1357
07-27 73° 94° 5171 3752 2632 1847 1385
07-28 70° 89° 5228 3799 2670 1877 1410
07-29 62° 80° 5277 3838 2698 1897 1426
07-30 60° 80° 5324 3875 2726 1917 1440
07-31 58° 83° 5373 3914 2754 1938 1456
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-01 63° 86° 5425 3956 2787 1962 1475
08-02 70° 90° 5484 4004 2825 1992 1500
08-03 72° 93° 5544 4055 2866 2025 1528
08-04 66° 87° 5599 4099 2900 2051 1549
08-05 71° 83° 5653 4144 2935 2078 1571
08-06 68° 74° 5702 4183 2964 2099 1587
08-07 63° 82° 5753 4224 2995 2122 1605
08-08 60° 83° 5803 4264 3024 2143 1621
08-09 63° 79° 5851 4302 3053 2164 1637
08-10 64° 77° 5900 4340 3081 2184 1652
08-11 64° 85° 5952 4383 3114 2209 1672
08-12 61° 80° 6001 4422 3143 2230 1688
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-13 63° 71° 6047 4457 3168 2247 1700
08-14 61° 70° 6090 4491 3192 2263 1711
08-15 53° 81° 6135 4526 3217 2280 1723
08-16 63° 86° 6188 4569 3250 2305 1743
08-17 62° 74° 6235 4605 3276 2323 1756
08-18 54° 79° 6279 4640 3301 2340 1768
08-19 68° 91° 6337 4688 3338 2369 1792
08-20 65° 80° 6387 4728 3369 2392 1810
08-21 62° 75° 6434 4765 3395 2410 1824
08-22 70° 99° 6496 4817 3438 2445 1853
08-23 79° 95° 6561 4872 3483 2482 1885
08-24 68° 86° 6617 4918 3518 2510 1908
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-25 69° 88° 6674 4965 3555 2538 1931
08-26 61° 72° 6718 4999 3580 2555 1943
08-27 53° 78° 6761 5032 3603 2570 1953
08-28 62° 85° 6813 5074 3635 2594 1972
08-29 62° 82° 6863 5114 3665 2616 1989
08-30 59° 79° 6910 5151 3692 2635 2003
08-31 59° 81° 6958 5189 3720 2655 2018
09-01 63° 89° 7013 5234 3754 2681 2040
09-02 71° 89° 7071 5282 3792 2711 2064
09-03 75° 98° 7135 5336 3837 2748 2096
09-04 74° 98° 7199 5390 3881 2784 2127
09-05 76° 90° 7260 5441 3922 2817 2155
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-06 61° 75° 7306 5477 3948 2835 2168
09-07 57° 64° 7344 5505 3966 2845 2173
09-08 47° 78° 7385 5536 3986 2858 2181
09-09 59° 75° 7430 5571 4012 2875 2193
09-10 60° 72° 7474 5605 4036 2891 2204
09-11 51° 72° 7514 5635 4055 2903 2211
09-12 52° 64° 7550 5661 4072 2911 2214
09-13 43° 66° 7582 5683 4084 2915 2214
09-14 50° 82° 7627 5717 4108 2931 2225
09-15 58° 73° 7670 5751 4132 2947 2236
09-16 51° 71° 7709 5780 4151 2958 2241
09-17 49° 71° 7747 5808 4169 2968 2247
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-18 51° 76° 7789 5840 4190 2981 2255
09-19 59° 81° 7837 5878 4218 3001 2270
09-20 58° 86° 7887 5918 4248 3023 2287
09-21 61° 83° 7937 5958 4278 3045 2304
09-22 63° 74° 7983 5994 4305 3064 2318
09-23 64° 74° 8030 6031 4332 3083 2331
09-24 61° 70° 8074 6065 4355 3098 2342
09-25 61° 63° 8114 6095 4375 3110 2349
09-26 61° 65° 8155 6126 4396 3123 2357
09-27 60° 71° 8199 6159 4420 3139 2368
09-28 61° 71° 8242 6193 4444 3155 2379
09-29 61° 73° 8287 6228 4468 3172 2390
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-30 66° 85° 8340 6271 4502 3197 2411

 

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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