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 Sat, Aug. 8. 2020

 
  

Scandia, MN

       

Generously Supported By:



Tabular Data

Daily GDD accumulation for various base temperature models in 2020 & 2019

2020Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
02-15 11° 34° 1 0 0 0 0
02-16 21° 1 0 0 0 0
02-17 19° 34° 6 0 0 0 0
02-18 25° 6 0 0 0 0
02-19 -7° 11° 6 0 0 0 0
02-20 -17° 15° 6 0 0 0 0
02-21 35° 6 0 0 0 0
02-22 16° 43° 13 0 0 0 0
02-23 21° 42° 23 0 0 0 0
02-24 13° 40° 27 0 0 0 0
02-25 22° 36° 34 0 0 0 0
02-26 16° 29° 35 0 0 0 0
2020Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
02-27 17° 25° 35 0 0 0 0
02-28 16° 25° 35 0 0 0 0
02-29 17° 37° 40 0 0 0 0
03-01 32° 48° 58 8 0 0 0
03-02 30° 37° 69 10 0 0 0
03-03 31° 40° 83 13 0 0 0
03-04 25° 40° 94 14 0 0 0
03-05 31° 39° 107 17 0 0 0
03-06 22° 37° 115 17 0 0 0
03-07 30° 51° 133 26 0 0 0
03-08 43° 57° 161 44 8 0 0
03-09 29° 46° 177 50 8 0 0
2020Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-10 17° 38° 182 50 8 0 0
03-11 26° 41° 194 51 8 0 0
03-12 34° 40° 209 56 8 0 0
03-13 25° 36° 218 56 8 0 0
03-14 20° 32° 223 56 8 0 0
03-15 19° 37° 229 56 8 0 0
03-16 29° 37° 240 57 8 0 0
03-17 24° 44° 252 59 8 0 0
03-18 35° 42° 268 66 8 0 0
03-19 35° 39° 283 70 8 0 0
03-20 21° 34° 288 70 8 0 0
03-21 16° 35° 292 70 8 0 0
2020Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-22 28° 41° 304 73 8 0 0
03-23 33° 44° 321 79 8 0 0
03-24 30° 49° 338 87 8 0 0
03-25 37° 43° 357 95 8 0 0
03-26 29° 49° 374 102 8 0 0
03-27 31° 55° 395 113 9 0 0
03-28 38° 48° 416 124 10 0 0
03-29 33° 47° 434 132 10 0 0
03-30 30° 57° 455 144 12 0 0
03-31 29° 51° 473 152 12 0 0
04-01 31° 55° 494 163 13 0 0
04-02 46° 61° 525 184 24 3 0
2020Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-03 27° 56° 545 193 24 3 0
04-04 19° 42° 554 193 24 3 0
04-05 24° 55° 571 201 24 3 0
04-06 42° 57° 599 219 32 3 0
04-07 48° 67° 634 244 47 11 2
04-08 37° 54° 658 258 51 11 2
04-09 32° 38° 671 261 51 11 2
04-10 25° 47° 685 265 51 11 2
04-11 29° 59° 707 276 53 11 2
04-12 29° 43° 720 280 53 11 2
04-13 23° 35° 728 280 53 11 2
04-14 18° 27° 728 280 53 11 2
2020Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-15 16° 33° 731 280 53 11 2
04-16 20° 45° 742 281 53 11 2
04-17 25° 46° 756 285 53 11 2
04-18 35° 60° 781 301 58 11 2
04-19 33° 47° 800 309 58 11 2
04-20 33° 53° 821 320 60 11 2
04-21 28° 45° 835 324 60 11 2
04-22 37° 60° 861 341 66 11 2
04-23 32° 57° 884 353 68 11 2
04-24 36° 64° 912 371 76 11 2
04-25 37° 67° 942 391 86 13 2
04-26 41° 67° 974 413 98 17 2
2020Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-27 49° 72° 1012 441 117 27 8
04-28 43° 53° 1038 458 123 27 8
04-29 41° 62° 1068 477 132 28 8
04-30 39° 66° 1099 498 143 31 8
05-01 48° 67° 1134 523 158 39 10
05-02 50° 72° 1173 552 178 50 16
05-03 44° 60° 1203 573 188 52 16
05-04 36° 59° 1229 588 193 52 16
05-05 43° 59° 1258 607 202 53 16
05-06 44° 65° 1290 630 215 58 16
05-07 38° 57° 1316 645 220 58 16
05-08 31° 46° 1333 652 220 58 16
2020Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-09 27° 50° 1349 658 220 58 16
05-10 36° 47° 1369 668 220 58 16
05-11 33° 53° 1390 679 221 58 16
05-12 28° 56° 1410 689 221 58 16
05-13 40° 60° 1438 707 229 58 16
05-14 50° 70° 1476 735 247 67 21
05-15 45° 68° 1510 759 262 74 23
05-16 51° 62° 1545 784 276 81 24
05-17 47° 53° 1573 802 284 81 24
05-18 48° 68° 1609 828 300 89 27
05-19 48° 72° 1647 856 318 99 32
05-20 60° 79° 1694 893 346 118 47
2020Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-21 55° 69° 1735 924 366 130 54
05-22 58° 67° 1775 954 387 143 62
05-23 60° 72° 1819 989 411 159 73
05-24 57° 77° 1864 1023 436 176 85
05-25 64° 78° 1913 1062 465 197 101
05-26 65° 80° 1964 1103 495 220 118
05-27 64° 76° 2012 1141 523 240 133
05-28 62° 76° 2059 1178 551 259 148
05-29 53° 64° 2096 1205 567 268 151
05-30 47° 64° 2129 1228 580 273 151
05-31 43° 73° 2165 1254 596 281 154
06-01 64° 87° 2218 1297 630 306 175
2020Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-02 62° 85° 2270 1339 661 330 193
06-03 58° 80° 2317 1376 688 349 207
06-04 53° 81° 2362 1411 713 366 219
06-05 56° 80° 2408 1447 739 384 232
06-06 51° 75° 2449 1478 760 396 240
06-07 61° 83° 2499 1518 790 418 257
06-08 71° 94° 2559 1568 831 451 285
06-09 66° 84° 2612 1612 864 476 305
06-10 57° 70° 2654 1643 886 490 314
06-11 53° 75° 2696 1676 908 504 323
06-12 52° 71° 2736 1705 927 516 329
06-13 45° 70° 2771 1730 943 523 332
2020Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-14 51° 76° 2812 1762 964 536 340
06-15 60° 80° 2860 1799 992 556 355
06-16 65° 89° 2915 1844 1027 583 377
06-17 63° 87° 2968 1887 1060 608 397
06-18 67° 82° 3020 1930 1092 632 416
06-19 63° 75° 3067 1966 1119 651 430
06-20 60° 70° 3110 1999 1142 666 440
06-21 56° 81° 3157 2036 1168 685 453
06-22 60° 73° 3201 2070 1193 701 465
06-23 56° 73° 3244 2103 1215 716 474
06-24 51° 75° 3285 2134 1236 729 482
06-25 52° 81° 3329 2168 1261 745 494
2020Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-26 65° 85° 3382 2212 1294 770 514
06-27 58° 84° 3432 2251 1323 791 530
06-28 62° 86° 3483 2293 1355 815 549
06-29 66° 77° 3533 2332 1384 837 566
06-30 69° 87° 3589 2378 1420 865 588
07-01 71° 86° 3645 2424 1457 893 612
07-02 69° 89° 3702 2471 1494 922 636
07-03 66° 90° 3758 2517 1529 950 659
07-04 68° 89° 3814 2564 1566 978 682
07-05 68° 88° 3870 2610 1602 1006 705
07-06 71° 82° 3925 2654 1636 1033 726
07-07 64° 84° 3976 2696 1668 1056 745
2020Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-08 70° 89° 4034 2743 1706 1086 770
07-09 66° 78° 4084 2784 1736 1108 787
07-10 61° 82° 4134 2823 1765 1130 804
07-11 62° 82° 4184 2863 1796 1152 821
07-12 60° 81° 4232 2901 1824 1172 836
07-13 61° 82° 4282 2941 1853 1194 852
07-14 62° 76° 4329 2978 1880 1213 866
07-15 53° 79° 4373 3012 1904 1229 877
07-16 56° 80° 4419 3048 1931 1247 891
07-17 61° 87° 4471 3091 1963 1271 910
07-18 67° 86° 4526 3135 1997 1298 931
07-19 66° 80° 4577 3176 2028 1321 950
2020Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-20 58° 77° 4622 3212 2054 1338 962
07-21 63° 78° 4671 3250 2082 1359 977
07-22 57° 67° 4711 3280 2102 1371 984
07-23 53° 77° 4754 3313 2126 1386 995
07-24 66° 88° 4809 3358 2160 1413 1017
07-25 77° 85° 4868 3407 2199 1444 1043
07-26 69° 84° 4923 3452 2234 1471 1064
07-27 59° 80° 4971 3490 2262 1491 1079
07-28 61° 81° 5020 3529 2291 1512 1095
07-29 59° 80° 5067 3566 2319 1531 1110
07-30 57° 79° 5113 3603 2345 1549 1123
07-31 54° 80° 5159 3638 2370 1567 1135
2020Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-01 59° 78° 5205 3674 2396 1585 1148
08-02 58° 69° 5246 3706 2418 1598 1157
08-03 51° 69° 5284 3733 2436 1608 1162
08-04 52° 75° 5326 3765 2457 1622 1170
08-05 54° 76° 5369 3798 2480 1636 1180
08-06 57° 76° 5413 3832 2504 1653 1191
08-07 65° 79° 5463 3872 2534 1675 1208
08-08 71° 81° 5517 3916 2568 1701 1230
08-09 69° 86° 5572 3962 2604 1728 1252
08-10 63° 79° 5622 4001 2633 1749 1268
08-11 55° 84° 5669 4038 2660 1769 1283
08-12 59° 84° 5718 4078 2690 1790 1299
2020Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-13 64° 85° 5771 4120 2722 1815 1318
08-14 65° 84° 5823 4162 2755 1839 1338
08-15 64° 84° 5875 4204 2787 1863 1357
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
02-15 -5° 17° 0 0 0 0 0
02-16 -9° 21° 0 0 0 0 0
02-17 13° 24° 0 0 0 0 0
02-18 -2° 20° 0 0 0 0 0
02-19 -8° 20° 0 0 0 0 0
02-20 27° 0 0 0 0 0
02-21 10° 23° 0 0 0 0 0
02-22 26° 0 0 0 0 0
02-23 26° 32° 7 0 0 0 0
02-24 -1° 30° 7 0 0 0 0
02-25 -11° 7 0 0 0 0
02-26 -9° 7 0 0 0 0
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
02-27 14° 7 0 0 0 0
02-28 -11° 22° 7 0 0 0 0
02-29 n/a n/a n/a n/a n/a n/a n/a
03-01 -5° 19° 7 0 0 0 0
03-02 -2° 18° 7 0 0 0 0
03-03 -16° 7 0 0 0 0
03-04 -16° 7 0 0 0 0
03-05 -5° 15° 7 0 0 0 0
03-06 -3° 21° 7 0 0 0 0
03-07 -9° 21° 7 0 0 0 0
03-08 34° 7 0 0 0 0
03-09 22° 36° 14 0 0 0 0
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-10 21° 31° 18 0 0 0 0
03-11 30° 18 0 0 0 0
03-12 14° 37° 21 0 0 0 0
03-13 35° 42° 37 6 0 0 0
03-14 34° 43° 54 13 0 0 0
03-15 29° 34° 63 13 0 0 0
03-16 15° 33° 65 13 0 0 0
03-17 19° 35° 70 13 0 0 0
03-18 18° 39° 77 13 0 0 0
03-19 28° 45° 92 17 0 0 0
03-20 32° 44° 108 23 0 0 0
03-21 25° 47° 122 27 0 0 0
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-22 28° 46° 137 32 0 0 0
03-23 22° 51° 151 37 0 0 0
03-24 30° 46° 167 42 0 0 0
03-25 21° 43° 177 42 0 0 0
03-26 21° 49° 190 45 0 0 0
03-27 40° 60° 218 63 8 0 0
03-28 33° 49° 237 72 8 0 0
03-29 23° 43° 248 73 8 0 0
03-30 26° 35° 256 73 8 0 0
03-31 18° 37° 262 73 8 0 0
04-01 29° 43° 276 77 8 0 0
04-02 29° 47° 292 83 8 0 0
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-03 28° 48° 308 89 8 0 0
04-04 27° 43° 321 92 8 0 0
04-05 34° 47° 339 100 8 0 0
04-06 39° 50° 362 113 11 0 0
04-07 45° 61° 393 134 21 3 0
04-08 37° 65° 422 153 31 4 0
04-09 31° 50° 440 162 31 4 0
04-10 27° 35° 449 162 31 4 0
04-11 28° 33° 458 162 31 4 0
04-12 31° 36° 469 163 31 4 0
04-13 30° 40° 482 166 31 4 0
04-14 25° 48° 497 171 31 4 0
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-15 24° 50° 512 176 31 4 0
04-16 31° 68° 540 194 38 4 0
04-17 40° 51° 564 208 42 4 0
04-18 39° 50° 586 220 44 4 0
04-19 30° 63° 610 234 49 4 0
04-20 38° 75° 645 259 63 11 2
04-21 47° 69° 681 285 79 18 5
04-22 42° 46° 703 297 81 18 5
04-23 32° 63° 729 313 87 18 5
04-24 47° 70° 765 339 104 27 8
04-25 51° 70° 804 368 122 38 14
04-26 40° 56° 830 384 128 38 14
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-27 37° 50° 852 396 130 38 14
04-28 28° 55° 871 405 130 38 14
04-29 41° 52° 895 419 134 38 14
04-30 34° 45° 913 427 134 38 14
05-01 37° 43° 931 435 134 38 14
05-02 38° 53° 955 449 138 38 14
05-03 30° 61° 978 462 141 38 14
05-04 42° 70° 1012 486 155 44 15
05-05 44° 61° 1042 506 166 46 15
05-06 42° 57° 1070 524 173 46 15
05-07 34° 62° 1096 540 179 46 15
05-08 35° 51° 1117 551 180 46 15
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-09 33° 52° 1138 562 181 46 15
05-10 33° 58° 1161 575 185 46 15
05-11 37° 63° 1190 594 193 46 15
05-12 42° 60° 1219 613 202 47 15
05-13 37° 65° 1248 632 211 48 15
05-14 42° 72° 1283 657 226 55 17
05-15 48° 75° 1322 686 245 67 23
05-16 58° 78° 1368 722 272 85 36
05-17 45° 68° 1403 747 286 92 38
05-18 43° 58° 1432 766 295 92 38
05-19 35° 45° 1449 773 295 92 38
05-20 33° 61° 1475 789 300 92 38
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-21 44° 61° 1505 809 311 95 38
05-22 46° 63° 1538 832 323 99 38
05-23 52° 59° 1571 855 337 105 38
05-24 50° 67° 1607 881 353 113 42
05-25 56° 65° 1646 910 372 124 47
05-26 43° 73° 1682 936 387 131 50
05-27 47° 58° 1712 956 398 134 50
05-28 44° 68° 1746 980 412 140 51
05-29 47° 72° 1784 1008 429 149 56
05-30 49° 80° 1826 1040 452 164 65
05-31 60° 87° 1878 1082 483 187 84
06-01 49° 71° 1915 1109 501 197 88
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-02 45° 71° 1951 1135 517 205 91
06-03 48° 78° 1992 1166 538 218 99
06-04 58° 81° 2040 1204 566 238 114
06-05 59° 78° 2087 1241 593 257 128
06-06 51° 85° 2133 1277 618 274 141
06-07 63° 87° 2186 1320 651 299 161
06-08 65° 84° 2238 1362 684 324 180
06-09 55° 71° 2280 1394 705 337 188
06-10 47° 75° 2318 1422 724 348 194
06-11 49° 64° 2353 1447 738 354 196
06-12 53° 67° 2391 1475 757 365 201
06-13 39° 70° 2424 1498 770 370 201
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-14 56° 80° 2470 1534 796 388 214
06-15 59° 75° 2515 1569 821 405 226
06-16 59° 73° 2559 1603 845 421 237
06-17 58° 73° 2603 1637 868 436 248
06-18 49° 71° 2641 1665 887 447 253
06-19 53° 75° 2683 1697 909 461 262
06-20 59° 75° 2728 1732 934 478 274
06-21 62° 75° 2775 1769 961 497 288
06-22 57° 77° 2820 1804 986 514 300
06-23 63° 72° 2865 1839 1011 531 312
06-24 58° 68° 2907 1871 1032 544 321
06-25 56° 78° 2951 1905 1057 561 332
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-26 57° 83° 2999 1943 1085 581 347
06-27 63° 76° 3047 1981 1113 601 362
06-28 62° 82° 3097 2021 1143 623 379
06-29 60° 87° 3149 2063 1174 646 398
06-30 66° 78° 3199 2103 1205 669 415
07-01 66° 72° 3246 2140 1232 688 429
07-02 67° 84° 3300 2184 1266 714 450
07-03 60° 85° 3351 2225 1296 736 468
07-04 68° 82° 3404 2268 1329 761 488
07-05 63° 80° 3453 2307 1359 783 504
07-06 66° 81° 3505 2349 1391 807 523
07-07 58° 83° 3554 2388 1420 828 539
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-08 65° 84° 3607 2431 1452 852 559
07-09 69° 78° 3658 2472 1484 876 577
07-10 66° 75° 3707 2511 1512 896 593
07-11 60° 80° 3755 2549 1541 917 608
07-12 62° 86° 3807 2591 1573 941 627
07-13 65° 83° 3859 2633 1605 965 646
07-14 65° 89° 3914 2678 1640 992 668
07-15 67° 90° 3971 2725 1676 1020 692
07-16 66° 84° 4024 2768 1710 1046 712
07-17 68° 83° 4078 2812 1743 1071 733
07-18 70° 82° 4132 2856 1777 1097 754
07-19 66° 89° 4187 2901 1813 1125 776
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-20 62° 74° 4233 2937 1839 1143 789
07-21 55° 77° 4277 2971 1863 1159 800
07-22 55° 76° 4321 3005 1886 1174 811
07-23 57° 80° 4367 3041 1913 1193 824
07-24 59° 83° 4416 3080 1942 1214 840
07-25 62° 81° 4465 3119 1971 1235 856
07-26 67° 83° 4518 3162 2004 1260 876
07-27 62° 82° 4568 3202 2034 1282 893
07-28 61° 75° 4614 3238 2060 1300 906
07-29 60° 74° 4659 3273 2085 1317 918
07-30 52° 73° 4700 3304 2105 1329 926
07-31 51° 78° 4742 3336 2128 1344 935
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-01 58° 83° 4791 3375 2157 1365 951
08-02 64° 82° 4842 3416 2188 1388 969
08-03 66° 84° 4896 3460 2221 1413 990
08-04 63° 85° 4948 3502 2253 1437 1009
08-05 66° 79° 4998 3542 2284 1460 1026
08-06 59° 83° 5047 3581 2313 1481 1042
08-07 65° 83° 5100 3624 2345 1505 1062
08-08 54° 76° 5143 3657 2368 1520 1072
08-09 52° 78° 5185 3689 2391 1535 1081
08-10 63° 72° 5231 3725 2416 1552 1094
08-11 64° 81° 5281 3765 2447 1575 1111
08-12 64° 77° 5330 3804 2476 1596 1127
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-13 58° 78° 5376 3840 2502 1614 1140
08-14 59° 75° 5421 3875 2527 1631 1152
08-15 60° 77° 5468 3912 2554 1650 1166
08-16 61° 78° 5516 3950 2582 1670 1181
08-17 59° 80° 5564 3988 2609 1689 1195
08-18 58° 72° 5607 4021 2632 1704 1206
08-19 50° 78° 5649 4053 2654 1718 1215
08-20 61° 80° 5697 4091 2683 1739 1230
08-21 55° 74° 5740 4124 2706 1754 1240
08-22 54° 70° 5780 4154 2726 1766 1247
08-23 51° 73° 5820 4184 2746 1778 1254
08-24 59° 71° 5864 4218 2769 1793 1265
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-25 60° 71° 5907 4251 2793 1809 1275
08-26 63° 68° 5950 4284 2816 1824 1285
08-27 56° 69° 5991 4315 2836 1836 1293
08-28 55° 70° 6031 4345 2857 1849 1300
08-29 54° 72° 6072 4376 2878 1862 1308
08-30 48° 71° 6110 4404 2895 1871 1312
08-31 50° 70° 6148 4432 2914 1882 1318
09-01 56° 68° 6188 4462 2934 1894 1325
09-02 58° 74° 6232 4496 2958 1910 1336
09-03 59° 73° 6277 4531 2982 1926 1347
09-04 52° 69° 6315 4559 3001 1937 1353
09-05 53° 72° 6356 4590 3021 1949 1361
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-06 61° 74° 6402 4626 3047 1967 1374
09-07 50° 62° 6436 4650 3062 1974 1375
09-08 51° 62° 6470 4674 3076 1980 1376
09-09 56° 64° 6508 4702 3094 1990 1381
09-10 61° 77° 6556 4740 3121 2009 1395
09-11 55° 63° 6593 4767 3138 2018 1399
09-12 54° 63° 6629 4793 3155 2027 1403
09-13 53° 64° 6665 4819 3171 2035 1406
09-14 46° 69° 6701 4845 3186 2042 1409
09-15 55° 80° 6746 4880 3212 2060 1421
09-16 59° 84° 6795 4919 3241 2081 1437
09-17 69° 85° 6850 4964 3276 2108 1459
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-18 69° 80° 6903 5007 3308 2132 1479
09-19 58° 83° 6951 5045 3337 2153 1494
09-20 62° 81° 7001 5085 3366 2174 1511
09-21 70° 78° 7053 5127 3399 2199 1530
09-22 57° 65° 7092 5156 3417 2209 1536
09-23 51° 75° 7132 5186 3438 2222 1543
09-24 52° 77° 7175 5219 3461 2237 1553
09-25 53° 68° 7213 5247 3479 2247 1558
09-26 43° 64° 7245 5269 3490 2250 1558
09-27 53° 62° 7281 5295 3506 2258 1561
09-28 40° 62° 7310 5314 3516 2260 1561
09-29 48° 55° 7340 5334 3525 2261 1561
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-30 55° 81° 7386 5370 3551 2279 1574

 

Latest Updates

May 19th, 2020Weather Data Interruption

We are currently experiencing problems with tracking growing degree days at GDDTracker.net. The weather feed we rely on from NOAA has been discontinued and is being migrated to a new server. We hope to be able to resume counting growing degree days in the next week or so. Thanks for your patience and understanding.
 

February 17th, 2020Welcome to the 2020 GDD Tracking Season

February 15th marked the start of our 3rd decade counting growing degree days here at GDDtracker.net. What started out as a couple models to schedule plant growth regulator applications to suppress annual bluegrass seedheads has expanded to include models for crabgrass germination, early season DMI fungicide applications, and most recently the Smith-Kerns dollar spot prediction model. We've been making some changes behind the scenes with the servers that continually process the immense amount of data collected daily to ensure system stability in the future. Thanks for your support as we look forward to the 2020 growing season.