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Crabgrass/Annual Bluegrass Preemergence Timer (GDD 32)
through Mon, Jun. 5. 2023

 

GDD Total: 2348 (Base 32) through Mon, Jun. 5, 2023

  

Greencastle, IN

        

Forecast »

“Flashback” to 2022

5/30

5/31

6/1

6/2

6/3

6/4

6/5

6/6

6/7

6/8

6/9

6/10

6/11

Done

801

Late

500

Optimum

250

Early

171

Under

0

 

Generously Supported By:



Tabular Data

Daily GDD accumulation for various base temperature models in 2023 & 2022

2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-15 41° 62° 30 20 10 2 0
02-16 35° 57° 54 34 14 2 0
02-17 22° 32° 59 34 14 2 0
02-18 21° 45° 70 35 14 2 0
02-19 37° 55° 94 49 18 2 0
02-20 36° 57° 119 63 22 2 0
02-21 37° 47° 139 73 22 2 0
02-22 41° 67° 171 96 35 6 0
02-23 30° 62° 195 110 39 6 0
02-24 23° 40° 205 110 39 6 0
02-25 30° 42° 219 114 39 6 0
02-26 28° 55° 238 123 39 6 0
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 46° 63° 271 146 51 11 0
02-28 40° 51° 294 160 55 11 0
03-01 41° 72° 329 184 70 17 2
03-02 33° 54° 351 196 72 17 2
03-03 34° 43° 367 202 72 17 2
03-04 30° 53° 387 212 72 17 2
03-05 34° 58° 410 226 75 17 2
03-06 45° 71° 446 251 91 25 5
03-07 39° 50° 469 264 94 25 5
03-08 33° 50° 488 273 94 25 5
03-09 33° 53° 509 284 95 25 5
03-10 35° 42° 525 291 95 25 5
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-11 34° 46° 543 299 95 25 5
03-12 33° 39° 557 303 95 25 5
03-13 29° 35° 567 303 95 25 5
03-14 28° 38° 579 304 95 25 5
03-15 21° 48° 591 306 95 25 5
03-16 37° 54° 614 320 98 25 5
03-17 30° 51° 633 328 98 25 5
03-18 19° 30° 635 328 98 25 5
03-19 16° 35° 639 328 98 25 5
03-20 23° 48° 652 332 98 25 5
03-21 31° 51° 672 341 98 25 5
03-22 40° 53° 696 356 102 25 5
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-23 45° 62° 728 377 114 29 5
03-24 41° 47° 750 389 116 29 5
03-25 39° 53° 774 403 120 29 5
03-26 33° 63° 800 419 126 29 5
03-27 37° 51° 822 432 128 29 5
03-28 30° 49° 840 439 128 29 5
03-29 33° 53° 861 450 129 29 5
03-30 31° 62° 885 465 134 29 5
03-31 50° 66° 921 491 150 37 7
04-01 40° 60° 949 508 157 37 7
04-02 33° 57° 972 521 160 37 7
04-03 46° 74° 1009 549 178 46 12
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-04 57° 79° 1055 585 204 64 25
04-05 46° 74° 1093 612 222 74 30
04-06 40° 49° 1115 625 224 74 30
04-07 35° 58° 1140 639 228 74 30
04-08 40° 62° 1169 658 237 75 30
04-09 39° 65° 1199 678 248 77 30
04-10 40° 70° 1232 701 260 82 30
04-11 42° 74° 1268 728 277 91 33
04-12 51° 77° 1311 760 299 105 42
04-13 46° 80° 1351 791 320 118 50
04-14 58° 77° 1397 826 346 135 63
04-15 56° 79° 1442 862 371 153 75
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-16 41° 68° 1475 884 384 157 75
04-17 38° 54° 1499 898 387 157 75
04-18 31° 60° 1522 912 391 157 75
04-19 46° 80° 1564 943 412 171 83
04-20 60° 83° 1613 983 442 192 100
04-21 46° 63° 1646 1005 454 197 100
04-22 39° 50° 1668 1018 457 197 100
04-23 36° 45° 1687 1027 457 197 100
04-24 29° 55° 1707 1037 457 197 100
04-25 38° 59° 1734 1053 463 197 100
04-26 39° 60° 1761 1071 471 197 100
04-27 38° 64° 1790 1090 480 198 100
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-28 48° 60° 1822 1112 492 202 100
04-29 42° 69° 1856 1136 506 208 101
04-30 42° 50° 1880 1150 510 208 101
05-01 41° 51° 1904 1164 514 208 101
05-02 40° 60° 1932 1182 522 208 101
05-03 38° 61° 1960 1199 530 208 101
05-04 38° 69° 1991 1221 541 211 101
05-05 47° 76° 2031 1250 561 222 107
05-06 58° 74° 2074 1284 584 238 118
05-07 59° 76° 2120 1320 610 256 131
05-08 61° 75° 2166 1355 636 274 144
05-09 53° 75° 2208 1388 658 288 153
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-10 51° 77° 2250 1420 680 302 162
05-11 53° 82° 2296 1455 706 319 174
05-12 65° 76° 2344 1494 734 340 190
05-13 66° 84° 2397 1537 767 365 210
05-14 64° 76° 2445 1575 795 385 225
05-15 53° 69° 2484 1604 814 396 231
05-16 57° 66° 2524 1633 834 407 237
05-17 54° 73° 2565 1664 855 421 246
05-18 46° 74° 2603 1692 873 430 250
05-19 54° 81° 2648 1727 898 448 263
05-20 52° 65° 2684 1754 914 456 266
05-21 45° 76° 2723 1782 933 467 272
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-22 52° 76° 2765 1814 955 481 281
05-23 55° 82° 2811 1851 981 499 294
05-24 55° 84° 2858 1888 1008 518 308
05-25 51° 71° 2898 1917 1027 529 314
05-26 47° 76° 2937 1947 1047 541 321
05-27 51° 77° 2979 1978 1069 555 330
05-28 56° 79° 3024 2014 1094 572 342
05-29 57° 84° 3073 2052 1123 593 358
05-30 58° 85° 3123 2092 1152 614 374
05-31 64° 86° 3176 2135 1186 640 395
06-01 64° 88° 3230 2179 1220 666 416
06-02 62° 90° 3284 2223 1254 692 437
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-03 64° 91° 3340 2269 1289 719 459
06-04 67° 83° 3393 2312 1323 744 479
06-05 55° 80° 3438 2348 1348 762 492
06-06 57° 83° 3486 2386 1376 782 507
06-07 59° 78° 3532 2422 1402 800 520
06-08 51° 79° 3575 2455 1425 815 530
06-09 51° 82° 3620 2489 1450 831 541
06-10 55° 85° 3668 2527 1478 851 556
06-11 61° 79° 3716 2565 1505 871 571
06-12 54° 80° 3760 2600 1530 888 583
2022Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-15 18° 44° 9 0 0 0 0
02-16 44° 56° 37 18 8 0 0
02-17 25° 56° 55 26 8 0 0
02-18 16° 31° 57 26 8 0 0
02-19 19° 33° 61 26 8 0 0
02-20 22° 54° 77 32 8 0 0
02-21 37° 60° 103 49 15 0 0
02-22 29° 60° 126 62 18 0 0
02-23 23° 28° 130 62 18 0 0
02-24 24° 32° 136 62 18 0 0
02-25 24° 31° 142 62 18 0 0
02-26 22° 35° 148 62 18 0 0
2022Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 24° 45° 161 64 18 0 0
02-28 26° 51° 178 71 18 0 0
03-01 37° 64° 206 89 26 1 0
03-02 34° 65° 234 107 34 1 0
03-03 32° 52° 254 117 34 1 0
03-04 30° 52° 272 126 34 1 0
03-05 42° 74° 308 151 50 8 3
03-06 48° 68° 344 177 65 16 6
03-07 33° 45° 361 184 65 16 6
03-08 29° 38° 372 185 65 16 6
03-09 32° 47° 390 193 65 16 6
03-10 30° 47° 406 199 65 16 6
2022Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-11 25° 36° 415 199 65 16 6
03-12 13° 24° 415 199 65 16 6
03-13 17° 53° 428 202 65 16 6
03-14 38° 62° 456 220 73 16 6
03-15 47° 66° 490 245 88 22 7
03-16 40° 70° 523 268 101 28 7
03-17 43° 71° 558 293 116 35 9
03-18 49° 60° 591 316 129 40 9
03-19 40° 55° 617 331 134 40 9
03-20 34° 61° 642 347 140 40 9
03-21 43° 71° 677 372 155 47 11
03-22 48° 56° 707 392 165 49 11
2022Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-23 46° 58° 737 412 175 51 11
03-24 41° 46° 759 423 176 51 11
03-25 38° 47° 779 434 177 51 11
03-26 29° 39° 791 435 177 51 11
03-27 23° 36° 799 435 177 51 11
03-28 22° 39° 807 435 177 51 11
03-29 32° 42° 822 441 177 51 11
03-30 41° 75° 858 467 192 59 14
03-31 36° 57° 883 481 197 59 14
04-01 32° 42° 898 486 197 59 14
04-02 29° 53° 917 496 197 59 14
04-03 31° 57° 939 508 199 59 14
2022Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-04 43° 62° 970 529 210 62 14
04-05 38° 56° 995 544 215 62 14
04-06 48° 56° 1025 564 225 64 14
04-07 40° 48° 1047 576 227 64 14
04-08 37° 43° 1065 584 227 64 14
04-09 34° 46° 1083 592 227 64 14
04-10 31° 66° 1110 608 234 64 14
04-11 53° 63° 1146 634 250 72 17
04-12 45° 67° 1180 658 264 78 18
04-13 53° 67° 1218 686 282 88 23
04-14 35° 57° 1242 700 286 88 23
04-15 43° 65° 1274 723 298 92 23
2022Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-16 41° 56° 1301 739 305 92 23
04-17 33° 53° 1321 750 305 92 23
04-18 34° 46° 1339 758 305 92 23
04-19 31° 51° 1358 767 305 92 23
04-20 44° 63° 1390 789 317 96 23
04-21 53° 68° 1428 817 335 106 29
04-22 52° 78° 1471 849 358 121 38
04-23 62° 83° 1522 890 389 143 56
04-24 69° 79° 1574 932 421 167 75
04-25 46° 66° 1608 956 435 173 76
04-26 37° 54° 1631 969 438 173 76
04-27 34° 64° 1658 986 445 173 76
2022Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-28 45° 64° 1690 1009 457 178 76
04-29 52° 71° 1730 1039 477 190 83
04-30 56° 77° 1775 1073 502 206 95
05-01 51° 65° 1811 1099 518 214 98
05-02 41° 68° 1844 1122 531 219 98
05-03 51° 70° 1882 1151 549 230 104
05-04 47° 60° 1914 1172 561 233 104
05-05 52° 57° 1946 1195 573 238 104
05-06 54° 63° 1982 1221 589 246 107
05-07 50° 67° 2019 1247 606 254 110
05-08 46° 70° 2055 1273 622 262 113
05-09 54° 79° 2100 1308 647 279 125
2022Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-10 65° 87° 2154 1352 681 305 146
05-11 71° 89° 2212 1400 719 335 171
05-12 65° 88° 2266 1445 753 362 193
05-13 59° 86° 2317 1485 784 384 210
05-14 61° 83° 2367 1525 814 406 227
05-15 55° 84° 2415 1563 842 426 242
05-16 52° 76° 2457 1595 864 440 251
05-17 53° 80° 2501 1630 888 457 263
05-18 60° 65° 2542 1660 909 469 270
05-19 59° 81° 2590 1698 937 489 285
05-20 65° 86° 2643 1742 970 515 306
05-21 66° 78° 2693 1782 1000 537 323
2022Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-22 54° 66° 2731 1810 1018 547 328
05-23 50° 68° 2768 1837 1035 556 332
05-24 53° 74° 2810 1868 1057 569 340
05-25 63° 83° 2861 1909 1088 592 358
05-26 62° 72° 2906 1944 1113 609 370
05-27 55° 67° 2945 1974 1132 621 377
05-28 52° 71° 2985 2003 1152 632 383
05-29 58° 79° 3032 2040 1179 651 397
05-30 65° 85° 3085 2083 1212 676 417
05-31 69° 87° 3141 2129 1248 704 440
06-01 70° 82° 3195 2173 1282 730 461
06-02 63° 76° 3242 2211 1309 750 476
2022Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-03 53° 82° 3288 2246 1335 767 488
06-04 56° 84° 3335 2284 1362 787 503
06-05 57° 83° 3383 2322 1390 807 518
06-06 60° 83° 3433 2361 1420 828 534
06-07 65° 77° 3482 2400 1449 849 550
06-08 59° 76° 3527 2436 1474 867 563
06-09 54° 76° 3570 2469 1497 882 573
06-10 57° 73° 3614 2502 1521 897 583
06-11 57° 78° 3659 2538 1546 915 596
06-12 66° 85° 3713 2581 1580 940 616
06-13 71° 90° 3771 2630 1618 971 642
06-14 77° 94° 3835 2683 1662 1006 672
2022Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-15 75° 94° 3897 2736 1704 1041 702
06-16 78° 95° 3962 2790 1749 1077 733
06-17 75° 90° 4023 2841 1790 1110 761
06-18 63° 80° 4072 2880 1819 1131 777
06-19 55° 82° 4119 2917 1846 1150 791
06-20 56° 90° 4170 2958 1877 1173 809
06-21 62° 96° 4227 3006 1914 1203 834
06-22 73° 93° 4289 3057 1956 1236 862
06-23 63° 87° 4342 3100 1989 1261 882
06-24 60° 90° 4395 3143 2022 1286 902
06-25 62° 83° 4445 3184 2052 1309 920
06-26 67° 82° 4498 3226 2085 1333 939
2022Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-27 58° 79° 4544 3263 2111 1352 953
06-28 54° 82° 4590 3299 2137 1370 966
06-29 55° 88° 4640 3338 2167 1391 982
06-30 59° 92° 4693 3382 2200 1417 1003
07-01 69° 93° 4752 3431 2239 1448 1029
07-02 69° 85° 4807 3476 2274 1475 1051
07-03 65° 89° 4862 3521 2309 1502 1073
07-04 64° 91° 4918 3566 2345 1529 1095
07-05 76° 97° 4982 3621 2389 1566 1127
07-06 78° 91° 5045 3673 2432 1600 1156
07-07 73° 80° 5099 3718 2466 1627 1178
07-08 70° 80° 5153 3761 2500 1652 1198
2022Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-09 69° 82° 5206 3804 2533 1677 1218
07-10 59° 83° 5255 3844 2562 1699 1235
07-11 61° 85° 5306 3885 2593 1722 1253
07-12 70° 83° 5361 3929 2628 1748 1274
07-13 63° 86° 5414 3972 2661 1773 1294
07-14 62° 84° 5465 4013 2692 1796 1312
07-15 61° 79° 5513 4051 2720 1816 1327
07-16 71° 90° 5572 4100 2759 1847 1353
07-17 69° 77° 5622 4141 2789 1870 1371
07-18 67° 84° 5676 4184 2823 1895 1391
07-19 67° 87° 5731 4229 2858 1922 1413
07-20 71° 91° 5790 4278 2897 1953 1439
2022Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-21 67° 87° 5845 4323 2932 1980 1461
07-22 70° 88° 5902 4371 2969 2010 1486
07-23 73° 83° 5958 4417 3005 2038 1509
07-24 73° 87° 6016 4465 3043 2068 1534
07-25 69° 78° 6068 4506 3075 2091 1552
07-26 66° 74° 6115 4544 3102 2111 1567
07-27 69° 83° 6170 4588 3137 2137 1588
07-28 68° 86° 6225 4633 3172 2164 1610
07-29 64° 79° 6274 4673 3201 2186 1627
07-30 58° 82° 6322 4711 3229 2206 1642
07-31 62° 81° 6372 4750 3259 2227 1658
08-01 69° 87° 6428 4796 3295 2255 1681
2022Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-02 68° 81° 6480 4838 3327 2279 1700
08-03 68° 90° 6537 4885 3364 2308 1724
08-04 70° 82° 6591 4929 3398 2334 1745
08-05 70° 84° 6646 4975 3433 2362 1768
08-06 71° 89° 6704 5023 3471 2392 1793
08-07 72° 89° 6763 5071 3510 2422 1818
08-08 75° 89° 6823 5121 3550 2454 1845
08-09 68° 75° 6873 5161 3580 2476 1862
08-10 67° 80° 6924 5203 3611 2500 1881
08-11 59° 83° 6974 5242 3641 2521 1897
08-12 58° 76° 7019 5277 3666 2538 1909
08-13 57° 78° 7064 5313 3691 2556 1922
2022Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-14 66° 78° 7114 5353 3721 2578 1939
08-15 66° 77° 7164 5392 3751 2599 1955
08-16 61° 80° 7212 5431 3779 2620 1971
08-17 59° 80° 7260 5469 3807 2640 1986
08-18 58° 82° 7308 5507 3835 2660 2001
08-19 58° 84° 7358 5546 3865 2681 2017
08-20 64° 82° 7408 5587 3895 2704 2035
08-21 65° 78° 7458 5626 3925 2725 2051
08-22 62° 79° 7506 5665 3953 2746 2067
08-23 59° 79° 7553 5702 3980 2765 2081
08-24 56° 81° 7600 5738 4007 2783 2094
08-25 58° 80° 7647 5776 4034 2803 2109
2022Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-26 65° 82° 7699 5817 4066 2826 2127
08-27 62° 84° 7750 5858 4097 2849 2145
08-28 69° 89° 7807 5905 4134 2878 2169
08-29 70° 86° 7863 5951 4170 2906 2192
08-30 65° 81° 7914 5992 4201 2929 2210
08-31 56° 79° 7959 6027 4226 2946 2222
09-01 59° 83° 8007 6066 4254 2967 2238
09-02 63° 82° 8058 6106 4285 2989 2255
09-03 67° 76° 8107 6146 4314 3011 2272
09-04 67° 79° 8158 6187 4345 3034 2290
09-05 69° 78° 8210 6228 4377 3057 2308
09-06 66° 79° 8260 6269 4407 3080 2326
2022Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-07 61° 79° 8309 6307 4436 3100 2341
09-08 58° 79° 8355 6343 4462 3118 2354
09-09 57° 81° 8402 6380 4489 3137 2368
09-10 62° 84° 8453 6421 4520 3160 2386
09-11 62° 73° 8498 6457 4545 3178 2399
09-12 53° 67° 8537 6485 4564 3188 2404
09-13 56° 73° 8579 6517 4586 3202 2413
09-14 55° 80° 8624 6553 4611 3220 2426
09-15 56° 80° 8671 6589 4638 3238 2439
09-16 56° 81° 8717 6625 4664 3256 2452
09-17 63° 82° 8767 6666 4694 3279 2470
09-18 62° 83° 8818 6707 4725 3302 2488
2022Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-19 68° 82° 8871 6750 4758 3327 2508
09-20 62° 88° 8924 6793 4791 3352 2528
09-21 71° 91° 8983 6842 4830 3383 2554
09-22 52° 74° 9024 6872 4851 3395 2561
09-23 45° 64° 9056 6895 4863 3400 2561
09-24 52° 77° 9099 6928 4886 3415 2571
09-25 58° 70° 9141 6959 4908 3428 2580
09-26 49° 64° 9176 6984 4923 3435 2581
09-27 41° 64° 9206 7005 4933 3438 2581
09-28 37° 60° 9232 7021 4939 3438 2581
09-29 40° 66° 9263 7042 4950 3441 2581
09-30 43° 68° 9297 7066 4964 3446 2582
2022Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55

 

Latest Updates

February 16th, 2023Welcome to the 2023 GDD Tracking Season

The roller coaster of late winter and early spring has begun in Michigan. Near 60°F a few days ago and now snow in the forecast once again. Despite the variable low and high temperatures for this time of year, 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 2023!
 

 

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