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Early Season Fungicide App for Dollar Spot Suppression (GDD 50)
forecast for Thu, Apr. 9. 2026

 

Forecasted GDD Total: 75 (Base 50) through Thu, Apr. 9, 2026

  

Lorain, OH

        

Forecast »

“Flashback” to 2025

3/29

3/30

3/31

4/1

4/2

4/3

4/4

4/5

4/6

4/7

4/8

4/9

4/10

Done

201

Late

177

Target

140

Early

101

Under

0

 

Generously Supported By:



Tabular Data

Daily GDD accumulation for various base temperature models in 2025 & 2026

2026Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-15 36° 45° 19 9 0 0 0
02-16 33° 48° 37 17 0 0 0
02-17 38° 49° 59 29 2 0 0
02-18 42° 57° 86 46 9 0 0
02-19 32° 49° 105 55 9 0 0
02-20 33° 50° 125 65 9 0 0
02-21 31° 33° 135 65 9 0 0
02-22 28° 31° 142 65 9 0 0
02-23 24° 31° 148 65 9 0 0
02-24 21° 34° 153 65 9 0 0
02-25 28° 40° 165 67 9 0 0
02-26 22° 30° 169 67 9 0 0
2026Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 28° 52° 187 75 9 0 0
02-28 30° 49° 204 82 9 0 0
03-01 22° 28° 207 82 9 0 0
03-02 19° 33° 211 82 9 0 0
03-03 29° 39° 223 84 9 0 0
03-04 32° 38° 236 87 9 0 0
03-05 34° 48° 255 95 9 0 0
03-06 34° 64° 282 112 16 0 0
03-07 54° 64° 319 139 33 9 4
03-08 40° 54° 344 154 38 9 4
03-09 45° 64° 376 177 51 13 4
03-10 58° 66° 416 207 71 25 11
2026Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-11 37° 65° 445 225 79 26 11
03-12 32° 38° 458 228 79 26 11
03-13 32° 51° 477 238 79 26 11
03-14 33° 39° 491 241 79 26 11
03-15 37° 67° 522 262 90 28 11
03-16 26° 60° 543 273 91 28 11
03-17 23° 26° 545 273 91 28 11
03-18 19° 36° 551 273 91 28 11
03-19 36° 46° 570 282 91 28 11
03-20 38° 59° 596 299 98 28 11
03-21 33° 43° 612 305 98 28 11
03-22 36° 59° 638 320 103 28 11
2026Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-23 31° 36° 649 322 103 28 11
03-24 25° 41° 660 323 103 28 11
03-25 34° 56° 683 336 106 28 11
03-26 42° 68° 716 359 119 33 11
03-27 30° 41° 730 362 119 33 11
03-28 31° 38° 743 365 119 33 11
03-29 35° 52° 764 376 121 33 11
03-30 49° 65° 799 401 136 40 13
03-31 56° 68° 839 431 155 52 20
04-01 35° 57° 863 445 160 52 20
04-02 37° 70° 894 467 171 56 20
04-03 47° 67° 929 492 186 63 22
2026Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-04 42° 71° 964 516 201 69 23
04-05 41° 47° 986 528 203 69 23
04-06 36° 49° 1007 539 203 69 23
04-07 29° 37° 1017 540 203 69 23
04-08 28° 57° 1038 550 204 69 23
04-09 48° 64° 1072 574 218 75 24
04-10 46° 61° 1103 595 229 79 24
04-11 46° 65° 1137 619 242 84 25
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-15 27° 37° 10 0 0 0 0
02-16 25° 34° 18 0 0 0 0
02-17 13° 25° 18 0 0 0 0
02-18 10° 16° 18 0 0 0 0
02-19 12° 18° 18 0 0 0 0
02-20 16° 23° 18 0 0 0 0
02-21 22° 28° 21 0 0 0 0
02-22 19° 32° 24 0 0 0 0
02-23 25° 35° 32 0 0 0 0
02-24 34° 47° 50 9 0 0 0
02-25 36° 46° 70 18 0 0 0
02-26 29° 38° 81 19 0 0 0
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 35° 40° 97 25 0 0 0
02-28 30° 48° 114 32 0 0 0
03-01 23° 42° 124 33 0 0 0
03-02 21° 28° 127 33 0 0 0
03-03 26° 37° 136 33 0 0 0
03-04 38° 59° 163 49 7 0 0
03-05 36° 56° 187 63 10 0 0
03-06 29° 35° 197 63 10 0 0
03-07 30° 37° 208 64 10 0 0
03-08 27° 33° 216 64 10 0 0
03-09 31° 48° 234 72 10 0 0
03-10 39° 57° 260 88 16 0 0
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-11 35° 53° 281 100 18 0 0
03-12 33° 40° 296 104 18 0 0
03-13 30° 44° 311 109 18 0 0
03-14 35° 69° 341 129 28 2 0
03-15 55° 65° 379 158 46 12 5
03-16 40° 60° 407 175 54 12 5
03-17 31° 38° 419 177 54 12 5
03-18 36° 63° 446 195 61 12 5
03-19 57° 66° 486 224 81 24 12
03-20 36° 63° 513 241 88 24 12
03-21 30° 48° 530 248 88 24 12
03-22 31° 48° 547 256 88 24 12
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-23 26° 43° 560 258 88 24 12
03-24 37° 44° 578 267 88 24 12
03-25 34° 42° 594 273 88 24 12
03-26 32° 39° 608 276 88 24 12
03-27 29° 52° 626 284 88 24 12
03-28 44° 61° 656 305 99 26 12
03-29 53° 65° 694 332 116 35 16
03-30 50° 62° 728 356 130 41 17
03-31 39° 55° 753 371 135 41 17
04-01 33° 39° 767 375 135 41 17
04-02 38° 61° 795 393 143 41 17
04-03 52° 62° 830 418 158 49 19
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-04 43° 51° 855 433 163 49 19
04-05 43° 57° 883 451 171 49 19
04-06 37° 44° 901 460 171 49 19
04-07 31° 49° 919 468 171 49 19
04-08 28° 37° 930 468 171 49 19
04-09 32° 44° 946 474 171 49 19
04-10 37° 44° 965 483 171 49 19
04-11 37° 44° 983 491 171 49 19
04-12 36° 47° 1002 500 171 49 19
04-13 35° 53° 1024 512 173 49 19
04-14 51° 65° 1060 538 189 57 22
04-15 43° 51° 1085 553 194 57 22
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-16 39° 46° 1105 564 194 57 22
04-17 33° 56° 1128 576 197 57 22
04-18 53° 74° 1170 608 218 70 31
04-19 51° 68° 1207 635 236 80 35
04-20 44° 50° 1232 650 241 80 35
04-21 48° 67° 1268 676 257 88 38
04-22 48° 54° 1297 695 266 89 38
04-23 51° 69° 1335 723 283 99 43
04-24 52° 69° 1373 751 302 109 49
04-25 60° 68° 1415 783 324 123 58
04-26 44° 60° 1445 803 334 125 58
04-27 41° 55° 1471 819 340 125 58
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-28 44° 68° 1505 844 354 131 59
04-29 56° 75° 1549 877 378 146 69
04-30 42° 54° 1575 893 384 146 69
05-01 49° 73° 1614 922 403 157 75
05-02 56° 65° 1652 950 421 168 80
05-03 46° 51° 1679 967 428 168 80
05-04 47° 52° 1706 984 435 168 80
05-05 50° 56° 1737 1005 446 171 80
05-06 52° 57° 1769 1027 458 175 80
05-07 51° 64° 1805 1053 474 182 83
05-08 47° 51° 1832 1070 481 182 83
05-09 44° 56° 1859 1088 488 182 83
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-10 46° 70° 1895 1113 504 190 86
05-11 49° 58° 1926 1135 515 194 86
05-12 49° 71° 1964 1162 533 203 90
05-13 61° 68° 2007 1195 555 218 100
05-14 60° 72° 2051 1229 579 234 111
05-15 59° 76° 2096 1265 605 252 124
05-16 62° 76° 2143 1301 632 270 137
05-17 59° 68° 2185 1333 654 284 146
05-18 54° 63° 2222 1360 671 293 150
05-19 50° 57° 2253 1381 682 296 150
05-20 48° 58° 2284 1402 692 299 150
05-21 53° 62° 2319 1427 708 306 152
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-22 51° 54° 2349 1448 718 309 152
05-23 48° 56° 2379 1468 728 311 152
05-24 50° 58° 2411 1489 740 314 152
05-25 46° 59° 2441 1510 750 317 152
05-26 47° 60° 2473 1531 761 320 152
05-27 54° 65° 2510 1558 779 329 157
05-28 54° 59° 2545 1583 793 336 158
05-29 55° 64° 2582 1610 811 345 162
05-30 53° 65° 2619 1637 828 354 166
05-31 51° 58° 2651 1660 840 358 166
06-01 49° 60° 2684 1682 853 363 166
06-02 49° 70° 2721 1709 870 372 171
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-03 58° 79° 2768 1746 897 391 184
06-04 67° 82° 2820 1789 929 416 204
06-05 61° 67° 2862 1821 951 429 213
06-06 60° 66° 2903 1852 972 443 221
06-07 59° 66° 2944 1882 993 455 228
06-08 60° 68° 2986 1914 1015 469 237
06-09 62° 71° 3030 1949 1039 485 249
06-10 57° 70° 3072 1980 1061 499 257
06-11 61° 79° 3120 2018 1089 519 272
06-12 65° 70° 3165 2054 1114 537 285
06-13 62° 68° 3209 2087 1137 552 295
06-14 60° 66° 3250 2118 1159 565 303
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-15 61° 68° 3292 2150 1181 579 312
06-16 61° 71° 3336 2184 1205 595 324
06-17 67° 75° 3385 2223 1234 616 339
06-18 66° 78° 3435 2263 1264 638 356
06-19 63° 72° 3480 2298 1289 655 368
06-20 63° 76° 3528 2336 1317 675 383
06-21 68° 83° 3581 2380 1350 701 404
06-22 74° 85° 3639 2427 1387 730 428
06-23 74° 85° 3696 2474 1425 759 452
06-24 74° 85° 3754 2522 1463 789 477
06-25 73° 81° 3808 2566 1497 815 499
06-26 72° 83° 3864 2612 1533 843 521
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-27 74° 84° 3921 2659 1570 872 545
06-28 74° 81° 3976 2704 1605 899 568
06-29 68° 80° 4028 2747 1637 924 587
06-30 75° 80° 4084 2792 1673 951 610
07-01 73° 80° 4139 2837 1707 978 631
07-02 70° 81° 4192 2880 1741 1003 652
07-03 71° 80° 4245 2924 1774 1028 672
07-04 68° 83° 4299 2967 1807 1054 692
07-05 76° 86° 4357 3015 1846 1084 718
07-06 75° 88° 4417 3065 1886 1116 744
07-07 69° 81° 4470 3108 1919 1141 764
07-08 68° 77° 4520 3149 1949 1164 782
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-09 70° 80° 4573 3192 1982 1188 802
07-10 72° 82° 4628 3237 2017 1215 824
07-11 71° 84° 4684 3282 2053 1243 846
07-12 76° 87° 4743 3332 2092 1275 873
07-13 73° 83° 4799 3377 2128 1302 896
07-14 73° 81° 4854 3422 2163 1329 917
07-15 66° 83° 4907 3465 2195 1354 937
07-16 74° 82° 4962 3511 2231 1381 960
07-17 73° 78° 5016 3554 2265 1407 981
07-18 67° 75° 5065 3593 2294 1428 996
07-19 63° 81° 5115 3633 2324 1450 1013
07-20 70° 77° 5166 3674 2355 1473 1032
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-21 65° 73° 5213 3712 2382 1493 1046
07-22 60° 76° 5259 3748 2408 1511 1059
07-23 63° 82° 5310 3788 2439 1533 1076
07-24 71° 87° 5367 3836 2476 1562 1101
07-25 76° 80° 5423 3881 2512 1590 1124
07-26 73° 84° 5480 3928 2549 1619 1147
07-27 75° 82° 5537 3975 2586 1648 1171
07-28 70° 85° 5592 4020 2621 1675 1194
07-29 73° 82° 5647 4066 2656 1702 1216
07-30 71° 83° 5703 4111 2691 1730 1238
07-31 67° 74° 5751 4149 2720 1750 1253
08-01 64° 73° 5797 4186 2746 1768 1267
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-02 61° 73° 5843 4221 2771 1786 1279
08-03 59° 76° 5888 4256 2797 1803 1291
08-04 62° 78° 5936 4294 2825 1823 1307
08-05 67° 79° 5987 4335 2856 1846 1324
08-06 69° 81° 6040 4378 2889 1871 1345
08-07 67° 80° 6091 4419 2920 1894 1363
08-08 70° 82° 6146 4464 2954 1921 1384
08-09 70° 83° 6200 4508 2989 1947 1405
08-10 71° 83° 6255 4553 3024 1974 1427
08-11 73° 84° 6311 4600 3060 2003 1451
08-12 76° 85° 6370 4648 3099 2033 1476
08-13 72° 81° 6424 4692 3133 2059 1498
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-14 72° 80° 6478 4736 3167 2085 1518
08-15 66° 83° 6531 4779 3199 2110 1538
08-16 71° 84° 6586 4824 3235 2137 1560
08-17 71° 79° 6639 4868 3268 2162 1581
08-18 68° 76° 6690 4908 3298 2185 1598
08-19 65° 82° 6741 4950 3330 2209 1617
08-20 69° 74° 6791 4989 3360 2230 1633
08-21 66° 71° 6837 5025 3386 2248 1647
08-22 63° 75° 6884 5062 3413 2267 1661
08-23 65° 78° 6934 5102 3443 2289 1677
08-24 67° 75° 6982 5141 3471 2310 1693
08-25 60° 69° 7025 5173 3494 2324 1702
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-26 59° 68° 7066 5204 3515 2337 1711
08-27 57° 68° 7107 5235 3536 2350 1718
08-28 58° 67° 7148 5266 3557 2363 1726
08-29 58° 64° 7187 5295 3576 2374 1732
08-30 53° 66° 7225 5323 3593 2384 1737
08-31 54° 69° 7264 5353 3613 2396 1744
09-01 56° 75° 7308 5386 3637 2411 1754
09-02 58° 75° 7352 5420 3661 2427 1766
09-03 56° 79° 7398 5456 3687 2445 1778
09-04 58° 68° 7438 5487 3707 2457 1786
09-05 54° 76° 7481 5519 3730 2472 1796
09-06 58° 67° 7522 5550 3751 2485 1803
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-07 52° 65° 7558 5577 3767 2494 1807
09-08 50° 67° 7595 5604 3784 2502 1811
09-09 51° 74° 7636 5634 3805 2515 1818
09-10 55° 74° 7678 5667 3827 2529 1828
09-11 55° 72° 7720 5698 3849 2543 1836
09-12 55° 73° 7762 5730 3871 2557 1845
09-13 58° 72° 7804 5762 3893 2571 1855
09-14 55° 74° 7847 5795 3916 2586 1864
09-15 62° 76° 7894 5832 3943 2605 1878
09-16 61° 76° 7940 5868 3969 2623 1891
09-17 60° 75° 7986 5904 3995 2641 1904
09-18 57° 77° 8030 5939 4019 2658 1916
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-19 63° 75° 8078 5976 4047 2677 1930
09-20 63° 75° 8125 6013 4074 2696 1944
09-21 65° 80° 8175 6053 4104 2718 1962
09-22 66° 77° 8224 6092 4133 2739 1978
09-23 65° 75° 8272 6130 4161 2759 1992
09-24 67° 73° 8320 6168 4189 2779 2007
09-25 64° 72° 8365 6204 4214 2797 2020
09-26 60° 74° 8411 6239 4240 2814 2032
09-27 59° 77° 8457 6275 4266 2832 2045
09-28 62° 77° 8505 6313 4294 2852 2060
09-29 57° 75° 8549 6347 4318 2868 2071
09-30 56° 73° 8592 6380 4341 2883 2081
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55

 

Latest Updates

February 16th, 2026Welcome to the 2026 GDD Tracking Season

Although Punxsutawney Phil saw his shadow predicting six more weeks of winter, GDDTracker will start counting on February 15. Spring is when GDDTracker receives the most attention for alerting turfgrass managers of optimal application timing windows for suppressing annual bluegrass seedheads and crabgrass preemergence applications. As spring turns to summer, there are several models that may be helpful throughout the season including the early season dollar spot DMI timer and the 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 successful 2026!


 

March 18th, 2024Timing crabgrass preemergence applications in spring

Don't miss this update from from Kevin Frank regarding timing of crabgrass preemergence herbicides.


 

 

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