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Crabgrass/Annual Bluegrass Preemergence Timer (GDD 32)
through Mon, Aug. 19. 2019

 
  

Clarksville, IN

       

Generously Supported By:



Tabular Data

Daily GDD accumulation for various base temperature models in 2018 & 2019

2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
02-15 32° 55° 22 12 2 0 0
02-16 29° 40° 34 14 2 0 0
02-17 31° 39° 47 17 2 0 0
02-18 31° 36° 58 18 2 0 0
02-19 27° 38° 69 19 2 0 0
02-20 33° 50° 89 29 2 0 0
02-21 32° 47° 106 36 2 0 0
02-22 38° 46° 126 46 2 0 0
02-23 41° 59° 154 64 10 0 0
02-24 35° 60° 180 80 16 0 0
02-25 27° 44° 194 84 16 0 0
02-26 28° 55° 213 93 16 0 0
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
02-27 32° 64° 239 109 22 0 0
02-28 33° 41° 254 114 22 0 0
03-01 33° 38° 267 117 22 0 0
03-02 37° 43° 286 126 22 0 0
03-03 27° 37° 296 126 22 0 0
03-04 14° 26° 296 126 22 0 0
03-05 12° 28° 296 126 22 0 0
03-06 16° 32° 298 126 22 0 0
03-07 26° 38° 308 126 22 0 0
03-08 32° 42° 323 131 22 0 0
03-09 37° 62° 350 148 30 0 0
03-10 45° 59° 380 168 40 3 0
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-11 37° 52° 403 181 43 3 0
03-12 32° 51° 423 191 43 3 0
03-13 44° 70° 458 216 58 10 2
03-14 56° 74° 501 249 81 25 12
03-15 37° 61° 528 266 88 25 12
03-16 31° 50° 546 275 88 25 12
03-17 30° 55° 567 285 88 25 12
03-18 31° 50° 585 293 88 25 12
03-19 30° 52° 604 302 88 25 12
03-20 39° 61° 632 320 96 25 12
03-21 42° 49° 655 333 100 25 12
03-22 37° 54° 679 347 103 25 12
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-23 29° 58° 700 359 105 25 12
03-24 42° 60° 729 378 114 26 12
03-25 43° 54° 757 395 121 26 12
03-26 31° 50° 775 403 121 26 12
03-27 30° 62° 799 417 125 26 12
03-28 41° 73° 834 442 140 33 14
03-29 56° 66° 873 471 159 44 21
03-30 37° 66° 903 491 169 46 21
03-31 32° 43° 919 497 169 46 21
04-01 27° 49° 934 502 169 46 21
04-02 36° 59° 960 518 175 46 21
04-03 42° 65° 992 540 187 50 21
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-04 52° 74° 1033 571 208 63 29
04-05 52° 60° 1067 595 222 69 30
04-06 54° 71° 1108 626 243 82 38
04-07 56° 69° 1148 657 263 95 45
04-08 61° 72° 1193 691 288 111 57
04-09 56° 71° 1235 723 310 125 66
04-10 47° 74° 1273 751 328 135 71
04-11 57° 82° 1321 789 356 155 86
04-12 57° 77° 1366 824 381 172 97
04-13 48° 69° 1402 850 397 180 101
04-14 41° 75° 1438 876 413 188 104
04-15 38° 56° 1463 891 418 188 104
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-16 43° 77° 1501 919 436 199 109
04-17 59° 78° 1548 956 463 217 123
04-18 61° 76° 1594 992 489 235 136
04-19 45° 57° 1623 1011 498 236 136
04-20 38° 45° 1643 1021 498 236 136
04-21 39° 70° 1675 1043 511 241 136
04-22 45° 79° 1715 1073 531 253 143
04-23 62° 80° 1764 1112 560 274 159
04-24 54° 76° 1807 1146 583 289 169
04-25 61° 74° 1853 1181 608 307 182
04-26 53° 65° 1890 1208 626 316 186
04-27 47° 64° 1923 1232 639 321 186
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-28 48° 62° 1956 1255 652 326 186
04-29 45° 79° 1996 1284 672 338 193
04-30 60° 83° 2045 1323 701 359 209
05-01 68° 82° 2098 1367 734 384 229
05-02 63° 77° 2147 1405 762 405 245
05-03 63° 73° 2193 1441 788 423 258
05-04 57° 66° 2233 1471 808 435 265
05-05 55° 71° 2274 1502 829 448 273
05-06 49° 77° 2315 1533 850 461 281
05-07 57° 80° 2361 1569 876 479 294
05-08 60° 85° 2411 1609 907 501 311
05-09 68° 75° 2461 1649 936 523 328
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-10 55° 67° 2500 1678 955 534 334
05-11 50° 69° 2537 1705 973 543 338
05-12 49° 59° 2569 1728 985 547 338
05-13 49° 59° 2601 1750 997 551 338
05-14 46° 69° 2637 1775 1012 559 341
05-15 51° 69° 2675 1803 1030 569 346
05-16 52° 81° 2719 1837 1055 585 357
05-17 64° 88° 2773 1881 1089 611 378
05-18 67° 88° 2829 1927 1124 639 401
05-19 69° 77° 2880 1968 1155 662 419
05-20 59° 75° 2925 2003 1181 679 431
05-21 53° 74° 2967 2035 1202 693 439
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-22 65° 80° 3017 2075 1233 715 457
05-23 74° 88° 3076 2124 1271 746 483
05-24 71° 90° 3134 2173 1310 776 508
05-25 72° 88° 3193 2221 1348 807 534
05-26 69° 88° 3249 2267 1385 835 557
05-27 67° 86° 3303 2311 1419 861 578
05-28 73° 88° 3362 2360 1457 892 604
05-29 67° 79° 3414 2402 1489 915 622
05-30 67° 75° 3463 2441 1518 937 639
05-31 67° 77° 3513 2481 1548 959 656
06-01 62° 83° 3563 2521 1579 981 673
06-02 66° 83° 3616 2564 1611 1006 693
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-03 54° 78° 3660 2598 1635 1022 704
06-04 59° 83° 3709 2637 1664 1042 719
06-05 70° 88° 3765 2683 1701 1071 743
06-06 67° 84° 3819 2727 1734 1097 763
06-07 69° 76° 3869 2767 1765 1119 781
06-08 70° 80° 3922 2810 1797 1144 801
06-09 70° 78° 3974 2853 1830 1168 820
06-10 66° 77° 4024 2892 1859 1190 837
06-11 54° 74° 4066 2924 1881 1204 846
06-12 56° 75° 4110 2958 1905 1220 856
06-13 59° 69° 4152 2990 1927 1234 865
06-14 51° 76° 4193 3021 1949 1247 874
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-15 67° 82° 4246 3064 1981 1272 894
06-16 68° 87° 4301 3109 2016 1299 916
06-17 67° 83° 4354 3152 2050 1324 936
06-18 70° 80° 4408 3196 2083 1350 956
06-19 71° 85° 4463 3241 2119 1377 979
06-20 68° 76° 4513 3281 2149 1399 996
06-21 62° 81° 4563 3321 2178 1421 1012
06-22 66° 79° 4613 3361 2208 1443 1030
06-23 66° 85° 4667 3405 2242 1469 1051
06-24 69° 78° 4718 3446 2274 1492 1069
06-25 66° 83° 4771 3489 2307 1517 1089
06-26 69° 89° 4828 3536 2344 1546 1113
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-27 71° 88° 4886 3584 2381 1576 1137
06-28 70° 91° 4944 3632 2419 1606 1163
06-29 74° 92° 5005 3683 2460 1638 1190
06-30 71° 92° 5064 3732 2500 1670 1217
07-01 68° 89° 5121 3779 2536 1698 1240
07-02 73° 92° 5181 3829 2576 1731 1268
07-03 72° 86° 5238 3876 2613 1760 1292
07-04 71° 89° 5296 3924 2651 1790 1316
07-05 73° 90° 5355 3973 2691 1821 1343
07-06 75° 87° 5414 4022 2730 1852 1369
07-07 74° 91° 5475 4073 2770 1885 1396
07-08 72° 87° 5532 4120 2808 1914 1421
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-09 71° 90° 5591 4169 2847 1945 1447
07-10 74° 91° 5652 4220 2887 1978 1475
07-11 78° 89° 5713 4272 2929 2011 1503
07-12 71° 88° 5771 4319 2966 2041 1528
07-13 64° 92° 5827 4365 3002 2068 1550
07-14 73° 91° 5886 4414 3042 2100 1577
07-15 74° 86° 5945 4463 3080 2130 1602
07-16 75° 89° 6005 4513 3120 2163 1629
07-17 75° 88° 6064 4562 3160 2194 1656
07-18 76° 93° 6126 4614 3202 2228 1685
07-19 77° 94° 6190 4668 3245 2264 1716
07-20 78° 94° 6254 4722 3290 2300 1747
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-21 77° 91° 6316 4774 3331 2334 1776
07-22 71° 79° 6369 4817 3364 2359 1796
07-23 62° 80° 6418 4856 3394 2380 1812
07-24 63° 81° 6468 4896 3423 2402 1829
07-25 61° 83° 6518 4936 3453 2424 1846
07-26 64° 87° 6572 4980 3487 2449 1866
07-27 67° 90° 6628 5026 3523 2478 1889
07-28 68° 90° 6685 5073 3560 2507 1913
07-29 70° 90° 6743 5121 3598 2537 1938
07-30 72° 84° 6798 5167 3634 2564 1961
07-31 69° 85° 6853 5212 3669 2591 1983
08-01 67° 87° 6908 5257 3704 2618 2005
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-02 68° 88° 6964 5303 3740 2646 2028
08-03 67° 88° 7020 5348 3776 2674 2051
08-04 69° 89° 7077 5395 3813 2703 2075
08-05 65° 90° 7133 5441 3849 2731 2098
08-06 70° 89° 7191 5489 3886 2761 2123
08-07 70° 87° 7247 5536 3923 2789 2146
08-08 68° 89° 7304 5582 3959 2818 2170
08-09 73° 91° 7364 5632 3999 2850 2197
08-10 67° 86° 7418 5677 4034 2876 2218
08-11 64° 89° 7473 5721 4068 2903 2240
08-12 70° 87° 7529 5767 4104 2931 2263
08-13 73° 86° 7586 5814 4142 2960 2287
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-14 71° 90° 7645 5863 4180 2991 2313
08-15 68° 84° 7699 5907 4214 3017 2334
08-16 65° 90° 7755 5953 4250 3044 2356
08-17 71° 90° 7813 6001 4288 3075 2381
08-18 74° 94° 7874 6053 4330 3108 2410
08-19 72° 95° 7936 6104 4371 3142 2439
08-20 74° 94° 7998 6156 4414 3176 2468
08-21 73° 93° 8059 6207 4455 3209 2496
08-22 71° 86° 8116 6254 4491 3238 2520
08-23 66° 81° 8168 6296 4523 3262 2538
08-24 62° 82° 8218 6336 4553 3284 2556
08-25 63° 85° 8270 6378 4586 3308 2575
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-26 67° 87° 8325 6423 4621 3335 2597
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
02-15 61° 71° 44 34 24 16 11
02-16 37° 69° 75 55 35 19 11
02-17 33° 40° 89 59 35 19 11
02-18 30° 50° 107 67 35 19 11
02-19 47° 75° 146 96 54 30 17
02-20 66° 78° 196 136 84 52 34
02-21 45° 71° 232 162 100 60 37
02-22 42° 49° 256 176 103 60 37
02-23 46° 66° 290 200 117 66 38
02-24 50° 60° 323 223 130 70 38
02-25 43° 62° 353 243 140 73 38
02-26 35° 57° 377 257 144 73 38
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
02-27 37° 63° 404 274 152 73 38
02-28 53° 59° 439 299 166 79 39
03-01 46° 60° 469 319 177 81 39
03-02 35° 50° 489 329 177 81 39
03-03 31° 52° 509 339 177 81 39
03-04 32° 53° 530 350 177 81 39
03-05 35° 49° 550 360 178 81 39
03-06 37° 58° 575 375 183 81 39
03-07 32° 40° 590 380 183 81 39
03-08 31° 36° 601 381 183 81 39
03-09 28° 46° 616 386 183 81 39
03-10 35° 49° 636 396 183 81 39
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-11 33° 48° 655 405 183 81 39
03-12 31° 43° 670 410 183 81 39
03-13 29° 43° 684 414 183 81 39
03-14 25° 42° 695 415 183 81 39
03-15 35° 62° 722 432 190 81 39
03-16 33° 50° 741 441 190 81 39
03-17 40° 57° 768 458 196 81 39
03-18 36° 60° 794 474 202 81 39
03-19 39° 59° 821 491 209 81 39
03-20 32° 50° 840 500 209 81 39
03-21 31° 38° 852 502 209 81 39
03-22 26° 47° 867 507 209 81 39
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-23 32° 53° 887 517 210 81 39
03-24 35° 46° 906 526 210 81 39
03-25 34° 49° 926 536 210 81 39
03-26 42° 61° 955 555 219 83 39
03-27 51° 64° 991 581 234 90 41
03-28 56° 60° 1027 607 250 98 44
03-29 49° 63° 1061 631 264 104 45
03-30 44° 54° 1088 648 271 104 45
03-31 36° 63° 1116 666 279 104 45
04-01 37° 52° 1138 678 282 104 45
04-02 35° 49° 1158 688 282 104 45
04-03 49° 76° 1199 719 303 117 53
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-04 35° 54° 1221 731 305 117 53
04-05 29° 53° 1241 741 305 117 53
04-06 38° 63° 1269 759 313 117 53
04-07 29° 44° 1284 764 313 117 53
04-08 29° 45° 1299 769 313 117 53
04-09 34° 49° 1318 778 313 117 53
04-10 36° 47° 1338 788 313 117 53
04-11 32° 65° 1364 804 320 117 53
04-12 57° 80° 1411 841 346 136 67
04-13 65° 80° 1461 881 377 159 84
04-14 62° 73° 1507 917 402 176 97
04-15 44° 61° 1537 937 413 179 97
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-16 34° 43° 1553 943 413 179 97
04-17 32° 58° 1576 956 416 179 97
04-18 40° 77° 1613 983 432 187 100
04-19 38° 54° 1637 997 436 187 100
04-20 36° 62° 1664 1014 443 187 100
04-21 43° 68° 1698 1038 457 193 101
04-22 51° 73° 1737 1067 477 205 107
04-23 52° 62° 1773 1093 492 212 110
04-24 53° 58° 1806 1116 506 217 110
04-25 55° 67° 1845 1145 525 228 116
04-26 48° 69° 1882 1172 541 237 120
04-27 45° 72° 1918 1198 558 245 123
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-28 50° 61° 1952 1222 571 251 124
04-29 36° 63° 1979 1239 579 251 124
04-30 38° 75° 2014 1264 593 257 125
05-01 48° 83° 2057 1297 617 273 135
05-02 65° 86° 2111 1341 650 298 156
05-03 71° 78° 2163 1383 683 323 175
05-04 70° 80° 2216 1426 716 348 195
05-05 62° 69° 2260 1460 739 363 206
05-06 58° 80° 2306 1496 766 382 220
05-07 55° 74° 2349 1529 788 396 229
05-08 52° 78° 2392 1562 811 411 239
05-09 55° 83° 2439 1599 838 430 253
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-10 67° 85° 2493 1643 872 456 274
05-11 66° 87° 2547 1687 907 483 295
05-12 71° 87° 2604 1734 944 512 320
05-13 69° 88° 2661 1781 980 540 343
05-14 70° 91° 2719 1829 1018 570 368
05-15 73° 89° 2778 1878 1057 601 394
05-16 69° 78° 2829 1919 1089 625 413
05-17 65° 79° 2879 1959 1119 647 430
05-18 68° 75° 2929 1999 1148 668 446
05-19 68° 79° 2981 2041 1180 692 465
05-20 66° 88° 3036 2086 1215 719 487
05-21 68° 87° 3091 2131 1251 747 510
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-22 69° 83° 3146 2176 1285 773 531
05-23 66° 83° 3198 2218 1318 798 551
05-24 62° 84° 3250 2260 1349 821 569
05-25 61° 88° 3302 2302 1382 846 588
05-26 71° 86° 3359 2349 1418 874 612
05-27 70° 86° 3415 2395 1454 902 635
05-28 69° 90° 3472 2442 1492 932 659
05-29 71° 87° 3529 2489 1529 961 683
05-30 75° 81° 3585 2535 1565 988 706
05-31 69° 82° 3638 2578 1598 1014 727
06-01 66° 84° 3691 2621 1631 1039 747
06-02 69° 87° 3748 2668 1667 1067 770
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-03 68° 81° 3800 2710 1700 1092 789
06-04 59° 77° 3846 2746 1726 1110 803
06-05 58° 83° 3895 2785 1754 1130 818
06-06 63° 80° 3945 2825 1784 1152 835
06-07 63° 86° 3997 2867 1817 1177 855
06-08 72° 88° 4056 2916 1855 1207 880
06-09 69° 90° 4113 2963 1893 1237 905
06-10 68° 84° 4167 3007 1927 1263 925
06-11 67° 73° 4215 3045 1955 1283 941
06-12 69° 85° 4270 3090 1990 1310 962
06-13 70° 84° 4325 3135 2025 1337 984
06-14 67° 86° 4379 3179 2059 1363 1006
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-15 66° 89° 4435 3225 2095 1391 1029
06-16 72° 92° 4496 3276 2135 1423 1056
06-17 74° 93° 4557 3327 2177 1457 1084
06-18 76° 92° 4620 3380 2219 1491 1114
06-19 77° 91° 4682 3432 2261 1525 1143
06-20 75° 85° 4740 3480 2300 1556 1168
06-21 73° 79° 4794 3524 2334 1582 1189
06-22 68° 77° 4844 3564 2364 1604 1207
06-23 68° 80° 4896 3606 2396 1628 1226
06-24 71° 85° 4953 3653 2432 1656 1249
06-25 70° 76° 5004 3694 2463 1679 1267
06-26 72° 83° 5059 3739 2499 1706 1289
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-27 70° 84° 5114 3784 2533 1733 1311
06-28 72° 88° 5172 3832 2571 1763 1336
06-29 74° 90° 5231 3881 2611 1795 1363
06-30 73° 91° 5292 3932 2651 1827 1390
07-01 77° 91° 5354 3984 2693 1861 1419
07-02 76° 90° 5415 4035 2735 1894 1447
07-03 74° 88° 5474 4084 2774 1925 1473
07-04 75° 94° 5536 4136 2816 1960 1503
07-05 78° 94° 5601 4191 2860 1996 1534
07-06 75° 85° 5658 4238 2898 2026 1558
07-07 62° 83° 5709 4279 2928 2048 1576
07-08 67° 89° 5765 4325 2964 2076 1599
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-09 72° 89° 5823 4373 3003 2107 1624
07-10 75° 91° 5884 4424 3044 2140 1653
07-11 75° 89° 5945 4475 3084 2172 1680
07-12 67° 87° 5999 4519 3119 2199 1702
07-13 65° 91° 6056 4566 3155 2227 1725
07-14 71° 93° 6116 4616 3195 2259 1752
07-15 74° 82° 6172 4662 3231 2287 1775
07-16 72° 86° 6229 4709 3268 2316 1799
07-17 74° 88° 6288 4758 3307 2347 1825
07-18 66° 85° 6341 4801 3341 2372 1845
07-19 66° 88° 6396 4846 3375 2399 1867
07-20 71° 84° 6452 4892 3411 2427 1890
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-21 65° 80° 6502 4932 3441 2449 1907
07-22 69° 81° 6555 4975 3474 2474 1927
07-23 64° 79° 6604 5014 3504 2496 1944
07-24 67° 84° 6658 5058 3538 2521 1964
07-25 68° 87° 6714 5104 3573 2549 1987
07-26 69° 87° 6770 5150 3609 2577 2010
07-27 68° 82° 6823 5193 3642 2602 2030
07-28 63° 81° 6873 5233 3672 2624 2047
07-29 63° 83° 6924 5274 3703 2647 2065
07-30 69° 82° 6977 5317 3737 2672 2085
07-31 69° 79° 7029 5359 3768 2696 2104
08-01 68° 79° 7080 5400 3800 2720 2122
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-02 67° 83° 7133 5443 3833 2745 2142
08-03 67° 87° 7188 5488 3868 2772 2164
08-04 72° 89° 7247 5537 3906 2802 2190
08-05 71° 91° 7306 5586 3945 2833 2216
08-06 72° 90° 7364 5634 3984 2864 2242
08-07 75° 87° 7424 5684 4023 2895 2268
08-08 73° 85° 7481 5731 4060 2924 2292
08-09 73° 85° 7538 5778 4097 2953 2316
08-10 70° 85° 7593 5823 4133 2981 2339
08-11 72° 88° 7651 5871 4171 3011 2363
08-12 69° 86° 7707 5917 4206 3038 2386
08-13 66° 86° 7761 5961 4240 3064 2407
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-14 68° 88° 7816 6006 4276 3092 2430
08-15 70° 80° 7869 6049 4309 3117 2450
08-16 69° 84° 7924 6094 4343 3143 2471
08-17 76° 85° 7982 6142 4382 3173 2496
08-18 73° 83° 8038 6188 4418 3202 2519
08-19 69° 87° 8094 6234 4454 3230 2542
08-20 73° 85° 8151 6281 4490 3258 2566
08-21 71° 80° 8205 6325 4524 3284 2587
08-22 66° 78° 8254 6364 4554 3306 2604
08-23 58° 79° 8301 6401 4580 3324 2617
08-24 60° 76° 8347 6437 4607 3342 2630
08-25 71° 86° 8404 6484 4643 3371 2654
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-26 75° 88° 8463 6533 4683 3403 2681
08-27 76° 89° 8524 6584 4723 3435 2708
08-28 76° 91° 8585 6635 4765 3469 2737
08-29 76° 89° 8646 6686 4805 3501 2764
08-30 72° 85° 8702 6732 4842 3530 2788
08-31 70° 87° 8759 6779 4879 3558 2811
09-01 71° 86° 8816 6826 4915 3587 2835
09-02 71° 90° 8874 6874 4954 3618 2860
09-03 73° 91° 8934 6924 4994 3650 2888
09-04 75° 92° 8996 6976 5035 3683 2916
09-05 74° 89° 9055 7025 5075 3715 2943
09-06 76° 85° 9114 7074 5113 3745 2968
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-07 73° 85° 9170 7120 5150 3774 2992
09-08 66° 76° 9219 7159 5179 3795 3008
09-09 62° 65° 9260 7190 5200 3808 3016
09-10 59° 66° 9301 7221 5221 3821 3024
09-11 58° 72° 9344 7254 5244 3836 3033
09-12 62° 77° 9392 7292 5271 3855 3048
09-13 64° 86° 9445 7335 5305 3880 3068
09-14 68° 89° 9501 7381 5341 3909 3092
09-15 70° 90° 9559 7429 5379 3939 3117
09-16 72° 83° 9615 7475 5414 3966 3139
09-17 72° 83° 9670 7520 5450 3993 3161
09-18 70° 91° 9728 7568 5488 4024 3187
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-19 71° 91° 9787 7617 5527 4055 3212
09-20 73° 92° 9848 7668 5568 4088 3240
09-21 74° 89° 9908 7718 5607 4119 3267
09-22 61° 75° 9954 7754 5633 4137 3280
09-23 60° 67° 9996 7786 5655 4151 3289
09-24 65° 73° 10000 7823 5682 4170 3303
09-25 71° 81° 10000 7866 5716 4196 3324
09-26 61° 74° 10000 7902 5741 4213 3336
09-27 55° 63° 10000 7929 5759 4222 3340
09-28 52° 71° 10000 7958 5778 4234 3347
09-29 54° 75° 10000 7991 5801 4249 3356
09-30 56° 80° 10000 8027 5827 4267 3369
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55

 

Latest Updates

March 9th, 2018Note Regarding 2018 Alerts

We had an issue with the emailed alerts that should be resolved now, and apologize for any inconvenience. You may receive outdated alerts tomorrow (Saturday, March 10, 2018), so please check the details before taking any action. Thank you.


 

February 17th, 2018Welcome to a New GDD Season!

GDDTracker is ready for 2018 with GDD tracking that began on February 15. New this year will be the Smith-Kerns Dollar Spot Prediction Model which will be launching soon. Check back soon for additional details!
 

March 29th, 2017Timing crabgrass pre-emergence applications

Please note that Dr. Frank has written another helpful article available from the MSU Extension web site.

http://msue.anr.msu.edu/news/timing_crabgrass_pre_emergence_applications


 

March 9th, 2017Controlling Annual Bluegrass Seedheads: Spray Now or Wait?

Dr. Kevin Frank has posted a useful article at the MSU Extension website. Please note it is written specifically for Michigan but may apply to other midwest regions.

"Growing degree-days have accumulated quickly, but it may not yet be time to apply plant growth regulators to control annual bluegrass seedheads on golf courses.

Read more: http://msue.anr.msu.edu/news/controlling_annual_bluegrass_seedheads_spray_now_or_wait


 

February 26th, 2017Early Spring in Michigan: Boom or Bust?

Dr. Kevin Frank has posted a helpful article on the MSU Extension website. Much of the midwest is experiencing the same (very) early warm-up, so non-Michiganders may find it help as well!

http://msue.anr.msu.edu/news/is_an_early_spring_a_boom_or_bust_for_golf_course_turf
 

February 16th, 2017Missing weather data

All air temperature data has been accounted for now.