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Crabgrass Germination Prediction (GDD 50)
through Sun, Dec. 15. 2024

 
  

Valparaiso, IN

        

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 32° 43° 16 6 0 0 0
02-16 23° 31° 21 6 0 0 0
02-17 12° 24° 21 6 0 0 0
02-18 17° 42° 28 6 0 0 0
02-19 21° 47° 40 8 0 0 0
02-20 26° 55° 59 16 0 0 0
02-21 39° 64° 89 36 10 2 0
02-22 39° 52° 112 50 13 2 0
02-23 31° 47° 129 56 13 2 0
02-24 20° 32° 133 56 13 2 0
02-25 30° 58° 155 68 15 2 0
02-26 34° 69° 184 88 25 4 0
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 55° 68° 224 117 44 15 6
02-28 25° 62° 245 128 46 15 6
02-29 20° 41° 254 128 46 15 6
03-01 28° 43° 267 132 46 15 6
03-02 37° 56° 292 147 50 15 6
03-03 40° 70° 325 170 63 20 6
03-04 52° 71° 365 200 83 32 13
03-05 38° 62° 393 218 91 32 13
03-06 37° 49° 414 229 92 32 13
03-07 33° 50° 434 239 92 32 13
03-08 42° 53° 460 254 98 32 13
03-09 32° 44° 476 261 98 32 13
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-10 30° 41° 490 264 98 32 13
03-11 27° 63° 513 278 101 32 13
03-12 41° 68° 546 300 114 36 13
03-13 45° 71° 582 327 130 45 16
03-14 43° 69° 616 351 144 51 17
03-15 36° 44° 634 358 144 51 17
03-16 34° 60° 659 374 149 51 17
03-17 31° 41° 673 378 149 51 17
03-18 28° 33° 681 378 149 51 17
03-19 27° 56° 701 387 149 51 17
03-20 28° 43° 714 391 149 51 17
03-21 23° 39° 724 391 149 51 17
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-22 31° 49° 742 399 149 51 17
03-23 28° 37° 753 400 149 51 17
03-24 28° 49° 769 406 149 51 17
03-25 40° 68° 801 428 161 54 17
03-26 37° 57° 826 443 166 54 17
03-27 31° 43° 841 448 166 54 17
03-28 26° 51° 857 454 166 54 17
03-29 32° 58° 880 467 169 54 17
03-30 40° 64° 910 487 179 56 17
03-31 37° 54° 934 501 183 56 17
04-01 45° 52° 960 517 189 56 17
04-02 36° 60° 986 533 195 56 17
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-03 34° 38° 1000 537 195 56 17
04-04 36° 40° 1016 543 195 56 17
04-05 35° 45° 1035 552 195 56 17
04-06 31° 53° 1055 562 195 56 17
04-07 36° 56° 1079 576 199 56 17
04-08 45° 74° 1116 603 217 66 22
04-09 53° 67° 1154 631 234 76 26
04-10 42° 66° 1186 653 247 80 26
04-11 48° 56° 1216 673 257 82 26
04-12 46° 60° 1247 694 267 85 26
04-13 38° 69° 1279 716 279 88 26
04-14 56° 79° 1324 751 305 106 39
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-15 49° 70° 1362 779 322 115 44
04-16 51° 76° 1403 810 344 129 52
04-17 62° 67° 1446 843 367 144 62
04-18 46° 64° 1479 866 380 149 62
04-19 43° 56° 1507 884 387 149 62
04-20 35° 46° 1525 892 387 149 62
04-21 34° 45° 1543 900 387 149 62
04-22 37° 65° 1572 919 396 150 62
04-23 49° 55° 1602 939 407 153 62
04-24 36° 51° 1624 951 408 153 62
04-25 30° 58° 1645 963 410 153 62
04-26 39° 61° 1674 981 418 153 62
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-27 58° 76° 1718 1016 443 170 74
04-28 62° 74° 1764 1052 469 188 87
04-29 61° 68° 1807 1084 492 202 96
04-30 47° 75° 1846 1113 511 213 102
05-01 58° 77° 1892 1149 536 231 115
05-02 51° 84° 1937 1184 562 248 127
05-03 53° 66° 1974 1211 579 257 132
05-04 50° 82° 2018 1245 603 273 142
05-05 49° 66° 2053 1271 618 281 145
05-06 46° 74° 2091 1298 636 290 150
05-07 56° 78° 2136 1333 661 307 162
05-08 52° 79° 2180 1367 684 323 172
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-09 52° 70° 2219 1396 703 334 178
05-10 48° 66° 2254 1421 718 341 180
05-11 49° 64° 2288 1446 733 348 182
05-12 45° 82° 2330 1477 755 361 191
05-13 61° 80° 2378 1516 783 382 206
05-14 55° 66° 2417 1544 802 392 211
05-15 55° 68° 2456 1573 821 403 218
05-16 50° 75° 2497 1604 841 416 225
05-17 60° 79° 2544 1642 869 436 240
05-18 59° 84° 2594 1681 899 457 257
05-19 65° 79° 2644 1721 929 479 273
05-20 61° 89° 2697 1764 962 504 294
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-21 62° 88° 2751 1808 995 530 314
05-22 65° 79° 2800 1848 1025 552 331
05-23 55° 80° 2846 1883 1050 569 343
05-24 61° 81° 2895 1922 1079 590 359
05-25 59° 72° 2938 1955 1103 605 370
05-26 53° 74° 2980 1987 1124 619 378
05-27 58° 72° 3023 2020 1147 634 388
05-28 54° 73° 3064 2051 1169 647 397
05-29 52° 67° 3102 2079 1186 657 401
05-30 45° 71° 3138 2105 1202 665 404
05-31 49° 79° 3180 2137 1224 679 413
06-01 59° 69° 3221 2169 1246 693 422
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-02 57° 72° 3264 2201 1269 707 432
06-03 54° 86° 3312 2239 1297 727 447
06-04 67° 87° 3367 2284 1332 754 469
06-05 67° 79° 3418 2325 1363 777 487
06-06 65° 79° 3468 2365 1392 799 503
06-07 58° 78° 3514 2401 1418 817 516
06-08 55° 80° 3559 2436 1444 834 529
06-09 52° 79° 3603 2470 1467 850 539
06-10 52° 63° 3638 2495 1483 857 542
06-11 43° 77° 3676 2523 1501 867 547
06-12 60° 90° 3729 2567 1534 893 567
06-13 71° 90° 3788 2615 1573 923 593
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-14 64° 85° 3841 2658 1606 948 613
06-15 59° 83° 3890 2697 1635 969 629
06-16 61° 92° 3945 2742 1669 996 650
06-17 76° 93° 4007 2794 1712 1030 680
06-18 75° 88° 4066 2843 1751 1061 706
06-19 75° 93° 4128 2896 1793 1096 735
06-20 70° 92° 4187 2945 1832 1127 761
06-21 67° 92° 4245 2992 1870 1156 786
06-22 73° 91° 4305 3042 1910 1188 813
06-23 66° 83° 4357 3085 1942 1213 832
06-24 60° 83° 4407 3124 1972 1234 849
06-25 69° 82° 4460 3168 2005 1260 869
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-26 69° 81° 4514 3211 2038 1285 889
06-27 61° 73° 4559 3246 2063 1302 901
06-28 60° 77° 4605 3283 2090 1321 915
06-29 72° 89° 4664 3331 2129 1351 941
06-30 57° 77° 4709 3366 2154 1368 952
07-01 47° 75° 4748 3395 2173 1379 959
07-02 59° 83° 4797 3434 2202 1400 975
07-03 73° 86° 4855 3482 2239 1430 999
07-04 68° 81° 4907 3524 2272 1454 1019
07-05 62° 83° 4958 3565 2303 1477 1036
07-06 61° 79° 5006 3603 2331 1497 1052
07-07 60° 89° 5058 3645 2363 1521 1071
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-08 68° 86° 5113 3690 2398 1548 1093
07-09 69° 76° 5163 3731 2428 1571 1110
07-10 65° 80° 5214 3771 2459 1593 1128
07-11 61° 80° 5263 3810 2488 1614 1143
07-12 64° 84° 5315 3852 2519 1638 1162
07-13 64° 88° 5369 3896 2554 1664 1184
07-14 67° 83° 5422 3939 2587 1689 1203
07-15 67° 87° 5477 3984 2622 1716 1226
07-16 67° 82° 5530 4027 2654 1741 1245
07-17 64° 79° 5580 4067 2684 1763 1262
07-18 59° 70° 5622 4100 2707 1778 1272
07-19 52° 75° 5664 4131 2729 1791 1281
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-20 55° 78° 5709 4166 2754 1808 1292
07-21 58° 80° 5756 4203 2781 1827 1307
07-22 61° 80° 5805 4242 2810 1848 1323
07-23 62° 83° 5855 4283 2840 1871 1340
07-24 64° 77° 5904 4321 2868 1891 1355
07-25 60° 78° 5951 4358 2895 1910 1369
07-26 51° 80° 5994 4391 2919 1925 1380
07-27 56° 82° 6041 4428 2946 1944 1394
07-28 62° 80° 6090 4467 2975 1965 1410
07-29 70° 84° 6145 4512 3010 1992 1432
07-30 66° 88° 6200 4558 3045 2020 1454
07-31 68° 88° 6256 4604 3081 2048 1477
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-01 71° 84° 6312 4649 3117 2075 1500
08-02 68° 82° 6365 4692 3150 2100 1519
08-03 66° 89° 6420 4737 3185 2127 1542
08-04 66° 88° 6475 4782 3220 2154 1564
08-05 70° 91° 6534 4831 3258 2185 1589
08-06 69° 81° 6586 4873 3291 2209 1609
08-07 64° 78° 6635 4912 3320 2230 1625
08-08 58° 82° 6683 4950 3348 2250 1640
08-09 62° 74° 6729 4986 3374 2268 1653
08-10 53° 74° 6770 5018 3395 2282 1661
08-11 52° 77° 6813 5050 3417 2296 1670
08-12 52° 77° 6855 5082 3440 2310 1680
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-13 52° 82° 6900 5117 3465 2327 1692
08-14 55° 84° 6948 5155 3492 2347 1706
08-15 65° 74° 6995 5193 3520 2367 1721
08-16 67° 85° 7050 5237 3554 2393 1742
08-17 66° 76° 7099 5276 3583 2414 1758
08-18 65° 74° 7146 5313 3611 2433 1773
08-19 62° 73° 7192 5349 3637 2451 1786
08-20 50° 70° 7230 5377 3655 2461 1791
08-21 47° 74° 7269 5406 3673 2472 1796
08-22 48° 77° 7309 5436 3694 2484 1804
08-23 49° 80° 7352 5469 3717 2499 1813
08-24 55° 89° 7402 5509 3746 2521 1830
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-25 67° 90° 7458 5555 3783 2549 1854
08-26 72° 93° 7518 5606 3823 2582 1881
08-27 73° 95° 7580 5658 3865 2616 1910
08-28 70° 85° 7635 5703 3900 2643 1932
08-29 68° 87° 7691 5748 3935 2670 1954
08-30 72° 90° 7750 5797 3974 2701 1980
08-31 67° 83° 7803 5840 4008 2726 2001
09-01 60° 76° 7849 5876 4033 2744 2013
09-02 49° 74° 7888 5905 4053 2755 2020
09-03 48° 76° 7928 5935 4073 2767 2027
09-04 48° 82° 7971 5969 4096 2783 2037
09-05 59° 86° 8022 6009 4127 2805 2054
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-06 58° 75° 8066 6043 4151 2821 2066
09-07 49° 64° 8100 6068 4165 2828 2067
09-08 42° 70° 8135 6092 4179 2834 2068
09-09 48° 80° 8177 6124 4201 2848 2077
09-10 49° 82° 8220 6157 4224 2863 2087
09-11 49° 86° 8265 6192 4250 2880 2100
09-12 55° 88° 8315 6232 4279 2902 2116
09-13 59° 85° 8365 6272 4309 2924 2133
09-14 61° 89° 8417 6315 4342 2949 2153
09-15 60° 88° 8469 6357 4374 2973 2172
09-16 55° 89° 8519 6397 4404 2995 2189
09-17 52° 85° 8566 6433 4431 3013 2203
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-18 51° 87° 8613 6471 4458 3033 2217
09-19 53° 89° 8662 6510 4487 3054 2233
09-20 61° 85° 8713 6550 4518 3076 2251
09-21 58° 91° 8765 6593 4550 3101 2270
09-22 63° 71° 8810 6628 4575 3118 2282
09-23 61° 66° 8852 6659 4597 3131 2290
09-24 62° 70° 8896 6693 4620 3147 2301
09-25 57° 74° 8939 6726 4644 3162 2312
09-26 49° 77° 8981 6758 4665 3176 2320
09-27 61° 73° 9026 6793 4690 3193 2332
09-28 61° 70° 9069 6826 4714 3208 2343
09-29 63° 76° 9117 6864 4742 3228 2358
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-30 59° 76° 9162 6899 4767 3245 2370
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-15 37° 53° 23 13 3 0 0
02-16 30° 39° 35 15 3 0 0
02-17 19° 30° 38 15 3 0 0
02-18 19° 44° 47 15 3 0 0
02-19 35° 53° 69 28 5 0 0
02-20 32° 48° 87 35 5 0 0
02-21 29° 38° 98 37 5 0 0
02-22 32° 35° 110 38 5 0 0
02-23 27° 47° 125 43 5 0 0
02-24 21° 29° 128 43 5 0 0
02-25 26° 36° 138 43 5 0 0
02-26 25° 49° 153 49 5 0 0
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 36° 58° 178 63 10 0 0
02-28 37° 49° 199 75 11 0 0
02-29 n/a n/a n/a n/a n/a n/a n/a
03-01 35° 58° 223 89 16 0 0
03-02 32° 41° 238 94 16 0 0
03-03 31° 38° 250 96 16 0 0
03-04 27° 42° 263 99 16 0 0
03-05 29° 50° 280 106 16 0 0
03-06 40° 52° 304 120 19 0 0
03-07 33° 44° 321 127 19 0 0
03-08 32° 47° 338 134 19 0 0
03-09 33° 43° 354 140 19 0 0
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-10 32° 36° 366 142 19 0 0
03-11 32° 41° 381 147 19 0 0
03-12 30° 35° 392 148 19 0 0
03-13 25° 32° 398 148 19 0 0
03-14 23° 33° 404 148 19 0 0
03-15 19° 47° 415 149 19 0 0
03-16 36° 48° 434 158 19 0 0
03-17 28° 50° 451 165 19 0 0
03-18 14° 27° 451 165 19 0 0
03-19 16° 37° 456 165 19 0 0
03-20 24° 48° 470 169 19 0 0
03-21 33° 52° 490 179 20 0 0
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-22 38° 49° 512 191 22 0 0
03-23 35° 50° 532 202 22 0 0
03-24 34° 47° 551 210 22 0 0
03-25 34° 41° 566 215 22 0 0
03-26 31° 54° 587 226 23 0 0
03-27 32° 43° 603 232 23 0 0
03-28 27° 49° 619 238 23 0 0
03-29 28° 43° 633 242 23 0 0
03-30 23° 54° 649 248 23 0 0
03-31 49° 65° 684 274 38 7 2
04-01 34° 54° 706 286 40 7 2
04-02 29° 54° 726 295 40 7 2
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-03 39° 64° 755 315 49 9 2
04-04 48° 67° 791 340 65 16 5
04-05 40° 72° 825 364 79 22 6
04-06 34° 50° 845 374 79 22 6
04-07 33° 53° 866 385 80 22 6
04-08 36° 61° 892 401 86 22 6
04-09 39° 65° 923 422 97 25 6
04-10 42° 68° 956 445 110 30 6
04-11 46° 76° 995 474 129 41 12
04-12 53° 81° 1040 509 154 58 24
04-13 51° 81° 1084 543 178 74 35
04-14 50° 81° 1127 576 201 89 45
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-15 60° 80° 1175 614 229 109 61
04-16 37° 67° 1205 634 239 111 61
04-17 30° 39° 1218 637 239 111 61
04-18 32° 57° 1240 649 242 111 61
04-19 38° 77° 1276 675 257 119 63
04-20 60° 80° 1324 713 285 139 78
04-21 46° 61° 1355 735 297 143 78
04-22 37° 51° 1378 747 299 143 78
04-23 35° 43° 1394 753 299 143 78
04-24 30° 51° 1413 762 299 143 78
04-25 36° 49° 1433 772 299 143 78
04-26 32° 51° 1452 782 299 143 78
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-27 32° 65° 1479 798 306 143 78
04-28 45° 57° 1507 817 315 143 78
04-29 37° 65° 1537 836 324 145 78
04-30 38° 48° 1558 847 325 145 78
05-01 39° 45° 1578 857 325 145 78
05-02 41° 50° 1601 870 328 145 78
05-03 40° 50° 1625 884 332 145 78
05-04 36° 69° 1655 905 343 147 78
05-05 48° 75° 1695 934 362 159 85
05-06 57° 77° 1740 969 387 176 97
05-07 64° 82° 1791 1011 418 199 115
05-08 54° 65° 1829 1038 436 209 120
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-09 48° 70° 1866 1065 453 218 123
05-10 46° 78° 1906 1095 473 230 130
05-11 53° 83° 1952 1131 499 248 143
05-12 66° 80° 2002 1172 529 270 161
05-13 64° 74° 2049 1209 557 289 175
05-14 59° 66° 2090 1239 577 302 183
05-15 51° 68° 2127 1267 595 311 187
05-16 47° 77° 2167 1297 614 323 194
05-17 46° 67° 2202 1321 629 330 196
05-18 42° 73° 2238 1347 645 338 198
05-19 56° 73° 2280 1379 667 352 208
05-20 46° 63° 2312 1402 680 356 208
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-21 46° 78° 2352 1432 699 368 215
05-22 50° 79° 2395 1464 722 383 225
05-23 55° 83° 2442 1502 749 402 239
05-24 56° 74° 2485 1534 772 417 249
05-25 46° 64° 2518 1557 785 422 249
05-26 42° 71° 2553 1582 800 429 250
05-27 44° 77° 2591 1611 819 439 256
05-28 53° 80° 2636 1645 843 456 267
05-29 55° 84° 2683 1682 870 475 282
05-30 60° 88° 2736 1725 903 500 301
05-31 66° 89° 2791 1770 938 527 323
06-01 65° 88° 2846 1815 973 554 345
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-02 64° 91° 2901 1861 1008 581 368
06-03 64° 88° 2955 1904 1042 607 389
06-04 62° 80° 3004 1944 1071 628 405
06-05 51° 82° 3049 1978 1096 645 416
06-06 59° 79° 3096 2015 1123 664 430
06-07 55° 74° 3138 2048 1145 678 440
06-08 48° 73° 3177 2076 1164 689 445
06-09 48° 75° 3217 2106 1184 701 452
06-10 53° 85° 3264 2143 1211 720 466
06-11 54° 68° 3303 2172 1230 731 472
06-12 52° 66° 3340 2199 1247 740 476
06-13 55° 63° 3376 2226 1264 748 480
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-14 57° 65° 3416 2255 1283 760 486
06-15 53° 81° 3461 2290 1308 777 498
06-16 52° 66° 3498 2317 1325 786 502
06-17 47° 79° 3539 2348 1346 799 510
06-18 55° 84° 3586 2385 1373 818 524
06-19 61° 84° 3637 2426 1404 841 542
06-20 60° 84° 3687 2466 1434 863 559
06-21 63° 87° 3740 2509 1467 888 579
06-22 62° 82° 3790 2549 1497 910 596
06-23 66° 83° 3842 2591 1529 934 616
06-24 61° 87° 3894 2633 1561 958 635
06-25 66° 85° 3948 2677 1595 984 655
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-26 66° 73° 3995 2714 1622 1003 669
06-27 59° 68° 4037 2746 1644 1017 678
06-28 52° 82° 4082 2781 1669 1034 690
06-29 66° 84° 4135 2824 1702 1059 710
06-30 67° 87° 4190 2869 1737 1086 732
07-01 70° 83° 4245 2914 1772 1113 754
07-02 65° 76° 4293 2952 1800 1133 769
07-03 64° 82° 4344 2993 1831 1156 787
07-04 63° 90° 4399 3038 1866 1183 809
07-05 70° 90° 4457 3086 1904 1213 834
07-06 67° 77° 4507 3126 1934 1235 851
07-07 60° 81° 4555 3165 1962 1255 867
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-08 61° 71° 4599 3199 1987 1271 878
07-09 54° 82° 4645 3234 2012 1289 890
07-10 58° 83° 4693 3273 2041 1309 906
07-11 64° 87° 4747 3316 2074 1335 926
07-12 58° 80° 4794 3353 2101 1354 940
07-13 65° 77° 4843 3392 2130 1375 956
07-14 64° 89° 4897 3436 2164 1401 977
07-15 67° 82° 4950 3479 2197 1426 997
07-16 63° 81° 5000 3519 2227 1448 1014
07-17 63° 78° 5048 3557 2255 1468 1029
07-18 54° 76° 5091 3590 2278 1483 1040
07-19 54° 82° 5137 3627 2304 1501 1053
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-20 64° 86° 5191 3670 2338 1527 1073
07-21 63° 77° 5239 3708 2366 1547 1088
07-22 53° 84° 5285 3745 2392 1565 1102
07-23 63° 83° 5337 3786 2424 1589 1120
07-24 59° 86° 5388 3827 2455 1612 1138
07-25 60° 89° 5440 3869 2487 1636 1157
07-26 71° 89° 5498 3917 2525 1666 1182
07-27 68° 92° 5556 3965 2563 1696 1207
07-28 71° 91° 5615 4015 2603 1727 1234
07-29 65° 81° 5666 4056 2633 1750 1252
07-30 59° 79° 5713 4092 2660 1769 1266
07-31 55° 80° 5759 4128 2686 1787 1278
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-01 57° 82° 5806 4165 2713 1806 1293
08-02 59° 81° 5855 4204 2742 1827 1308
08-03 58° 85° 5905 4244 2772 1849 1325
08-04 64° 85° 5957 4286 2804 1873 1344
08-05 65° 74° 6005 4324 2832 1893 1359
08-06 62° 70° 6049 4358 2856 1909 1370
08-07 64° 75° 6096 4395 2883 1928 1384
08-08 57° 83° 6144 4433 2911 1948 1399
08-09 61° 79° 6192 4471 2939 1968 1414
08-10 62° 81° 6241 4510 2968 1989 1430
08-11 66° 82° 6293 4552 3000 2013 1449
08-12 68° 82° 6346 4595 3033 2038 1469
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-13 62° 81° 6395 4635 3063 2059 1486
08-14 63° 76° 6443 4672 3090 2079 1500
08-15 61° 75° 6489 4708 3116 2097 1513
08-16 53° 79° 6533 4742 3140 2113 1524
08-17 61° 79° 6581 4780 3168 2133 1539
08-18 55° 75° 6624 4813 3191 2148 1549
08-19 53° 79° 6667 4847 3215 2163 1560
08-20 67° 89° 6723 4893 3251 2191 1583
08-21 68° 84° 6777 4937 3284 2217 1604
08-22 67° 85° 6832 4981 3319 2244 1625
08-23 69° 95° 6892 5031 3359 2276 1652
08-24 78° 97° 6957 5086 3404 2313 1684
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-25 70° 82° 7011 5130 3438 2339 1706
08-26 68° 76° 7061 5170 3468 2361 1723
08-27 58° 76° 7106 5206 3494 2378 1735
08-28 52° 77° 7149 5238 3516 2393 1744
08-29 53° 81° 7194 5273 3541 2410 1757
08-30 55° 68° 7234 5303 3561 2422 1763
08-31 46° 76° 7273 5332 3580 2433 1770
09-01 49° 82° 7317 5366 3604 2449 1780
09-02 54° 85° 7365 5404 3632 2469 1795
09-03 64° 90° 7420 5449 3667 2496 1817
09-04 66° 90° 7476 5495 3703 2524 1840
09-05 71° 90° 7534 5544 3741 2554 1866
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-06 67° 82° 7587 5586 3774 2579 1885
09-07 65° 69° 7631 5620 3798 2595 1897
09-08 58° 67° 7672 5651 3819 2608 1904
09-09 54° 73° 7714 5683 3841 2622 1913
09-10 48° 78° 7755 5714 3862 2635 1921
09-11 59° 66° 7795 5744 3882 2647 1928
09-12 54° 68° 7834 5773 3901 2658 1935
09-13 47° 67° 7870 5799 3917 2666 1937
09-14 44° 70° 7905 5824 3932 2673 1939
09-15 45° 75° 7943 5852 3950 2683 1944
09-16 48° 74° 7982 5881 3969 2694 1950
09-17 57° 67° 8022 5911 3989 2706 1957
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-18 48° 68° 8058 5937 4005 2714 1960
09-19 49° 64° 8092 5961 4019 2720 1962
09-20 53° 81° 8137 5997 4044 2737 1974
09-21 61° 78° 8185 6034 4072 2757 1988
09-22 60° 81° 8233 6072 4100 2777 2003
09-23 55° 78° 8277 6107 4125 2793 2015
09-24 49° 78° 8319 6138 4146 2807 2023
09-25 54° 80° 8364 6173 4171 2824 2035
09-26 59° 73° 8408 6207 4195 2840 2046
09-27 60° 66° 8449 6238 4216 2853 2054
09-28 58° 69° 8490 6270 4237 2866 2063
09-29 57° 75° 8534 6303 4261 2882 2073
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-30 50° 84° 8579 6338 4286 2899 2085

 

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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