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Crabgrass Germination Prediction (GDD 50)
through Tue, Apr. 20. 2021

 

GDD Total: 183 (Base 50) through Tue, Apr. 20, 2021

  

Cleveland, OH

       

Forecast »

Done

1401

Late

601

Germination

200

Early

100

Under

0

 

Generously Supported By:



Tabular Data

Daily GDD accumulation for various base temperature models in 2021 & 2020

2021Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
02-15 19° 24° 11 0 0 0 0
02-16 10° 24° 11 0 0 0 0
02-17 22° 11 0 0 0 0
02-18 20° 28° 13 0 0 0 0
02-19 16° 26° 13 0 0 0 0
02-20 24° 13 0 0 0 0
02-21 33° 13 0 0 0 0
02-22 31° 37° 25 2 0 0 0
02-23 33° 43° 42 9 0 0 0
02-24 35° 53° 64 21 2 0 0
02-25 31° 38° 77 24 2 0 0
02-26 25° 42° 88 25 2 0 0
2021Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
02-27 37° 46° 108 35 2 0 0
02-28 36° 59° 133 50 8 0 0
02-29 n/a n/a n/a n/a n/a n/a n/a
03-01 25° 46° 147 54 8 0 0
03-02 20° 39° 155 54 8 0 0
03-03 33° 52° 175 65 8 0 0
03-04 24° 36° 183 65 8 0 0
03-05 23° 34° 190 65 8 0 0
03-06 24° 34° 197 65 8 0 0
03-07 20° 34° 202 65 8 0 0
03-08 25° 61° 224 76 10 0 0
03-09 42° 62° 254 96 20 2 0
2021Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-10 47° 70° 290 123 36 11 4
03-11 52° 69° 329 151 55 21 9
03-12 33° 55° 351 163 57 21 9
03-13 24° 42° 362 165 57 21 9
03-14 29° 45° 377 170 57 21 9
03-15 23° 41° 387 170 57 21 9
03-16 39° 52° 411 183 61 21 9
03-17 29° 57° 432 195 62 21 9
03-18 36° 47° 451 204 62 21 9
03-19 29° 37° 463 205 62 21 9
03-20 25° 53° 480 212 62 21 9
03-21 34° 61° 505 228 67 21 9
2021Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-22 44° 69° 540 252 82 28 10
03-23 46° 68° 575 277 97 35 13
03-24 57° 73° 618 311 120 50 23
03-25 48° 70° 655 337 137 59 27
03-26 41° 63° 685 358 147 61 27
03-27 43° 67° 718 381 160 66 27
03-28 39° 56° 743 396 165 66 27
03-29 34° 49° 763 406 165 66 27
03-30 44° 72° 799 432 182 74 30
03-31 41° 66° 831 453 193 78 30
04-01 25° 39° 841 453 193 78 30
04-02 25° 37° 850 453 193 78 30
2021Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-03 26° 58° 870 463 193 78 30
04-04 42° 58° 898 481 201 78 30
04-05 41° 69° 931 504 214 82 30
04-06 47° 76° 970 533 233 94 36
04-07 57° 76° 1015 568 258 111 48
04-08 61° 83° 1065 608 288 132 65
04-09 57° 75° 1109 642 312 149 76
04-10 58° 79° 1156 679 339 167 90
04-11 51° 62° 1190 703 353 174 91
04-12 49° 56° 1221 724 364 176 91
04-13 46° 61° 1252 746 376 180 91
04-14 44° 57° 1281 765 384 181 91
2021Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-15 40° 46° 1302 776 386 181 91
04-16 41° 45° 1324 787 387 181 91
04-17 38° 49° 1345 798 388 181 91
04-18 35° 56° 1369 812 392 181 91
04-19 41° 64° 1399 832 402 183 91
04-20 34° 46° 1417 840 402 183 91
04-21 34° 41° 1435 848 403 183 91
04-22 33° 50° 1454 858 403 183 91
04-23 38° 60° 1481 875 409 183 91
04-24 43° 62° 1512 895 420 185 91
04-25 44° 57° 1540 913 428 186 91
04-26 41° 63° 1570 933 438 188 91
2021Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
2020Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
02-15 35° 0 0 0 0 0
02-16 29° 40° 13 3 0 0 0
02-17 24° 43° 24 4 0 0 0
02-18 32° 48° 42 12 0 0 0
02-19 25° 32° 48 12 0 0 0
02-20 18° 24° 48 12 0 0 0
02-21 16° 34° 51 12 0 0 0
02-22 24° 45° 64 15 0 0 0
02-23 32° 50° 83 24 0 0 0
02-24 36° 51° 104 35 2 0 0
02-25 35° 42° 121 42 2 0 0
02-26 26° 39° 131 42 2 0 0
2020Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
02-27 22° 26° 133 42 2 0 0
02-28 18° 25° 133 42 2 0 0
02-29 21° 29° 137 42 2 0 0
03-01 21° 47° 148 44 2 0 0
03-02 46° 50° 174 60 7 0 0
03-03 41° 55° 200 76 13 0 0
03-04 35° 43° 217 83 13 0 0
03-05 27° 50° 233 89 13 0 0
03-06 30° 39° 246 92 13 0 0
03-07 28° 39° 257 93 13 0 0
03-08 34° 61° 283 109 19 0 0
03-09 52° 65° 320 135 35 9 4
2020Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-10 33° 61° 345 150 40 9 4
03-11 29° 45° 360 156 40 9 4
03-12 39° 56° 385 171 46 9 4
03-13 39° 57° 411 187 52 9 4
03-14 32° 38° 424 190 52 9 4
03-15 31° 40° 438 193 52 9 4
03-16 26° 50° 454 200 52 9 4
03-17 36° 43° 472 208 52 9 4
03-18 33° 50° 492 217 52 9 4
03-19 37° 61° 519 234 59 9 4
03-20 35° 67° 548 254 68 10 4
03-21 26° 34° 556 254 68 10 4
2020Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-22 21° 43° 566 254 68 10 4
03-23 37° 42° 583 262 68 10 4
03-24 36° 42° 601 269 68 10 4
03-25 36° 51° 623 281 70 10 4
03-26 42° 64° 653 301 81 13 4
03-27 39° 50° 675 314 83 13 4
03-28 45° 58° 705 333 92 14 4
03-29 52° 69° 743 361 111 24 9
03-30 41° 54° 769 377 116 24 9
03-31 38° 43° 787 386 116 24 9
04-01 39° 46° 808 396 116 24 9
04-02 34° 52° 829 407 118 24 9
2020Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-03 33° 51° 849 417 118 24 9
04-04 32° 58° 872 431 121 24 9
04-05 34° 50° 893 441 121 24 9
04-06 29° 56° 914 452 122 24 9
04-07 45° 68° 948 476 136 31 10
04-08 49° 63° 982 500 150 37 11
04-09 36° 56° 1006 514 154 37 11
04-10 35° 42° 1022 520 154 37 11
04-11 32° 53° 1043 531 155 37 11
04-12 46° 62° 1075 553 167 41 11
04-13 39° 59° 1102 570 174 41 11
04-14 33° 44° 1119 577 174 41 11
2020Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-15 29° 45° 1134 582 174 41 11
04-16 27° 41° 1146 584 174 41 11
04-17 32° 37° 1158 586 174 41 11
04-18 34° 51° 1178 596 174 41 11
04-19 41° 59° 1206 614 182 41 11
04-20 33° 53° 1227 625 183 41 11
04-21 37° 53° 1250 638 186 41 11
04-22 30° 42° 1264 642 186 41 11
04-23 37° 60° 1290 658 192 41 11
04-24 41° 52° 1315 673 197 41 11
04-25 38° 59° 1341 690 204 41 11
04-26 42° 48° 1364 702 206 41 11
2020Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-27 36° 57° 1388 717 211 41 11
04-28 49° 65° 1424 742 226 48 13
04-29 55° 73° 1466 774 248 62 22
04-30 47° 57° 1495 793 257 64 22
05-01 43° 55° 1522 810 264 64 22
05-02 43° 74° 1559 837 281 73 26
05-03 58° 71° 1601 869 303 87 35
05-04 41° 54° 1627 885 309 87 35
05-05 36° 52° 1649 897 311 87 35
05-06 42° 53° 1674 912 316 87 35
05-07 36° 64° 1703 931 325 88 35
05-08 33° 43° 1719 937 325 88 35
2020Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-09 32° 47° 1736 944 325 88 35
05-10 37° 59° 1762 960 331 88 35
05-11 35° 45° 1780 968 331 88 35
05-12 35° 54° 1803 981 333 88 35
05-13 34° 54° 1825 993 335 88 35
05-14 44° 72° 1861 1019 351 96 39
05-15 60° 73° 1906 1054 376 113 50
05-16 55° 68° 1945 1084 396 124 57
05-17 55° 74° 1988 1116 419 139 67
05-18 57° 69° 2029 1147 440 152 75
05-19 60° 71° 2073 1181 463 168 86
05-20 56° 65° 2111 1209 482 178 91
2020Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-21 54° 71° 2152 1240 502 191 99
05-22 57° 62° 2190 1268 520 201 103
05-23 56° 70° 2230 1299 541 213 111
05-24 64° 83° 2282 1340 573 237 130
05-25 67° 85° 2336 1384 607 263 151
05-26 67° 85° 2390 1428 640 289 172
05-27 69° 84° 2445 1473 675 316 193
05-28 66° 80° 2496 1514 706 339 211
05-29 57° 74° 2539 1547 729 354 222
05-30 55° 66° 2577 1575 748 364 227
05-31 48° 57° 2608 1596 758 367 227
06-01 43° 70° 2643 1621 773 374 229
2020Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-02 58° 86° 2693 1661 803 396 246
06-03 68° 82° 2746 1704 836 421 266
06-04 63° 77° 2794 1742 864 441 281
06-05 67° 83° 2846 1784 897 465 300
06-06 65° 77° 2895 1824 926 486 316
06-07 54° 71° 2936 1854 946 499 324
06-08 52° 74° 2977 1885 968 512 332
06-09 60° 91° 3031 1929 1001 538 353
06-10 71° 89° 3089 1977 1039 568 378
06-11 63° 74° 3136 2014 1066 587 392
06-12 58° 71° 3178 2046 1088 601 401
06-13 54° 64° 3215 2073 1105 610 405
2020Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-14 48° 66° 3250 2098 1120 617 407
06-15 53° 72° 3290 2129 1141 629 414
06-16 54° 75° 3333 2161 1164 644 424
06-17 55° 79° 3378 2196 1189 661 436
06-18 64° 80° 3428 2236 1219 683 453
06-19 65° 81° 3479 2277 1249 706 471
06-20 63° 84° 3530 2318 1281 729 489
06-21 68° 87° 3586 2364 1316 757 512
06-22 67° 77° 3636 2404 1346 779 529
06-23 64° 77° 3685 2443 1375 800 545
06-24 61° 73° 3730 2478 1400 817 557
06-25 59° 77° 3776 2514 1426 835 570
2020Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-26 63° 83° 3827 2555 1457 858 588
06-27 69° 81° 3880 2598 1490 883 608
06-28 68° 77° 3930 2638 1521 905 625
06-29 61° 79° 3978 2676 1549 925 640
06-30 61° 81° 4027 2715 1578 946 656
07-01 63° 81° 4077 2755 1608 968 673
07-02 64° 85° 4129 2798 1640 992 692
07-03 65° 87° 4184 2842 1674 1019 714
07-04 69° 85° 4239 2887 1709 1046 736
07-05 60° 85° 4290 2928 1740 1069 754
07-06 63° 89° 4343 2972 1774 1094 774
07-07 72° 89° 4402 3020 1812 1125 800
2020Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-08 69° 90° 4459 3067 1850 1154 824
07-09 71° 92° 4519 3117 1889 1186 851
07-10 74° 93° 4580 3168 1931 1219 879
07-11 70° 81° 4634 3212 1964 1245 900
07-12 66° 80° 4685 3253 1995 1268 918
07-13 66° 76° 4734 3292 2024 1289 934
07-14 59° 80° 4781 3329 2052 1308 948
07-15 64° 89° 4836 3374 2086 1335 970
07-16 73° 85° 4893 3421 2123 1364 994
07-17 69° 84° 4947 3465 2157 1390 1015
07-18 67° 91° 5004 3512 2195 1419 1039
07-19 75° 90° 5065 3563 2236 1452 1067
2020Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-20 70° 83° 5120 3608 2270 1479 1089
07-21 68° 84° 5173 3651 2304 1504 1109
07-22 69° 82° 5227 3695 2338 1530 1130
07-23 70° 80° 5280 3738 2371 1555 1150
07-24 65° 81° 5331 3779 2402 1578 1168
07-25 60° 83° 5381 3819 2432 1600 1185
07-26 67° 87° 5436 3864 2467 1627 1207
07-27 73° 87° 5494 3912 2505 1657 1232
07-28 69° 83° 5548 3956 2538 1683 1253
07-29 67° 87° 5603 4001 2574 1710 1275
07-30 69° 79° 5655 4043 2606 1734 1294
07-31 65° 80° 5706 4084 2636 1757 1312
2020Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-01 66° 76° 5755 4123 2665 1778 1328
08-02 65° 74° 5802 4160 2693 1797 1342
08-03 63° 80° 5852 4200 2722 1819 1359
08-04 65° 73° 5899 4237 2749 1838 1373
08-05 59° 73° 5943 4271 2773 1854 1384
08-06 55° 76° 5986 4304 2797 1869 1394
08-07 59° 77° 6032 4340 2823 1887 1407
08-08 56° 79° 6078 4376 2848 1905 1420
08-09 62° 86° 6130 4418 2880 1929 1439
08-10 69° 90° 6187 4465 2918 1958 1463
08-11 72° 82° 6242 4510 2953 1985 1485
08-12 64° 81° 6293 4551 2983 2008 1503
2020Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-13 60° 85° 6343 4591 3014 2030 1520
08-14 71° 88° 6400 4638 3051 2059 1544
08-15 69° 84° 6455 4683 3085 2086 1566
08-16 63° 77° 6503 4721 3113 2106 1581
08-17 57° 79° 6549 4757 3140 2124 1594
08-18 59° 74° 6594 4792 3164 2141 1606
08-19 56° 73° 6636 4824 3186 2155 1615
08-20 52° 79° 6679 4857 3209 2170 1625
08-21 56° 83° 6727 4895 3237 2190 1640
08-22 60° 86° 6778 4936 3268 2213 1658
08-23 67° 84° 6831 4979 3302 2238 1678
08-24 69° 88° 6887 5025 3338 2266 1701
2020Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-25 67° 83° 6940 5069 3371 2291 1721
08-26 62° 84° 6992 5110 3402 2315 1740
08-27 73° 90° 7051 5159 3442 2346 1766
08-28 69° 80° 7104 5202 3474 2371 1786
08-29 68° 75° 7153 5241 3503 2392 1802
08-30 60° 71° 7196 5275 3527 2407 1812
08-31 58° 79° 7243 5311 3553 2426 1826
09-01 65° 83° 7294 5353 3585 2449 1844
09-02 68° 79° 7346 5394 3616 2473 1863
09-03 62° 82° 7396 5434 3646 2495 1880
09-04 60° 73° 7440 5468 3671 2511 1891
09-05 54° 80° 7485 5503 3695 2528 1903
2020Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-06 56° 75° 7528 5536 3719 2543 1913
09-07 62° 71° 7573 5571 3743 2560 1925
09-08 64° 84° 7625 5613 3775 2584 1944
09-09 65° 80° 7675 5653 3806 2606 1961
09-10 65° 71° 7721 5689 3831 2624 1974
09-11 57° 67° 7761 5719 3852 2636 1981
09-12 55° 81° 7807 5755 3877 2654 1994
09-13 65° 75° 7855 5793 3905 2674 2009
09-14 52° 66° 7892 5820 3922 2683 2013
09-15 48° 69° 7928 5846 3939 2691 2016
09-16 49° 74° 7968 5876 3958 2703 2023
09-17 56° 67° 8007 5905 3977 2714 2029
2020Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-18 51° 60° 8040 5928 3991 2719 2029
09-19 42° 62° 8071 5949 4001 2722 2029
09-20 42° 66° 8103 5971 4013 2726 2029
09-21 45° 68° 8138 5996 4028 2733 2031
09-22 44° 70° 8172 6020 4043 2739 2033
09-23 50° 76° 8213 6052 4064 2752 2041
09-24 57° 75° 8258 6086 4088 2769 2052
09-25 54° 78° 8301 6119 4112 2784 2063
09-26 57° 80° 8348 6156 4138 2803 2076
09-27 63° 79° 8397 6195 4167 2824 2092
09-28 57° 78° 8442 6230 4192 2841 2104
09-29 51° 63° 8477 6255 4207 2848 2106
2020Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-30 49° 63° 8511 6279 4221 2854 2107

 

Latest Updates

February 19th, 2021Welcome to the 2021 GDD Tracking Season

Despite the frigid temperatures covering most of the country this week, GDDtracker started counting on February 15. As temperatures warm and snow fall melts the first two models that gather the most attention are the Proxy/Primo timer for scheduling annual bluegrass seedhead suppression applications and the crabgrass preemergence application timer. As the season progresses the early season DMI timer and the Smith-Kerns dollar spot prediction model gather views. Further information on all models can be found under the "About" tab at the top of the screen. Thanks for your continued use and support of GDDtracker and best wishes for a successful 2021 growing season!