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Crabgrass/Annual Bluegrass Preemergence Timer (GDD 32)
through Mon, Dec. 10. 2018

 
  

Clarksville, IN

       

Generously Supported By:



Tabular Data

Daily GDD accumulation for various base temperature models in 2017 & 2018

2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
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
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
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
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
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
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
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
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
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
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
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
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
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
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
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
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
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
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
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
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
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
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
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
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
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
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
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
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
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
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
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
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
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
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
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
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
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
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
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
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
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
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
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
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
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
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
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
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
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
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
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
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
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
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
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
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
02-19 42° 58° 156 96 39 10 2
02-20 38° 70° 188 118 52 14 2
02-21 54° 69° 227 147 71 26 9
02-22 57° 71° 269 179 93 40 18
02-23 58° 69° 311 211 115 53 26
02-24 56° 78° 356 246 140 70 38
02-25 31° 54° 377 257 141 70 38
02-26 27° 49° 393 263 141 70 38
02-27 43° 56° 421 281 148 70 38
02-28 49° 65° 456 306 163 77 40
03-01 43° 69° 490 330 177 83 41
03-02 34° 48° 508 338 177 83 41
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-03 30° 41° 522 342 177 83 41
03-04 30° 56° 542 352 178 83 41
03-05 33° 67° 570 370 186 83 41
03-06 51° 64° 606 396 202 91 44
03-07 46° 66° 640 420 216 97 45
03-08 44° 62° 671 441 226 100 45
03-09 44° 73° 707 467 243 108 48
03-10 37° 53° 730 480 246 108 48
03-11 31° 35° 741 481 246 108 48
03-12 25° 42° 752 482 246 108 48
03-13 30° 41° 766 486 246 108 48
03-14 27° 35° 775 486 246 108 48
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-15 21° 37° 782 486 246 108 48
03-16 22° 44° 793 487 246 108 48
03-17 36° 51° 815 499 247 108 48
03-18 41° 51° 839 513 251 108 48
03-19 31° 53° 859 523 251 108 48
03-20 40° 69° 891 545 263 112 48
03-21 50° 64° 926 570 278 119 50
03-22 34° 50° 945 579 278 119 50
03-23 32° 62° 970 594 283 119 50
03-24 56° 78° 1016 630 308 136 62
03-25 59° 78° 1062 666 335 155 75
03-26 57° 69° 1104 698 356 168 84
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-27 49° 70° 1141 725 374 178 88
03-28 55° 64° 1179 753 391 187 93
03-29 53° 65° 1216 780 408 196 97
03-30 54° 77° 1259 813 432 212 108
03-31 47° 61° 1291 835 444 216 108
04-01 44° 50° 1316 850 449 216 108
04-02 46° 66° 1351 875 463 222 109
04-03 57° 71° 1393 907 486 236 118
04-04 59° 70° 1436 940 508 251 128
04-05 52° 81° 1480 974 532 267 139
04-06 43° 60° 1509 993 542 268 139
04-07 39° 58° 1536 1010 548 268 139
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-08 35° 67° 1565 1029 557 270 139
04-09 48° 79° 1607 1061 579 283 148
04-10 66° 81° 1658 1102 611 307 166
04-11 58° 73° 1702 1136 634 323 177
04-12 49° 72° 1740 1164 653 333 182
04-13 51° 81° 1785 1199 677 349 194
04-14 54° 85° 1832 1236 705 369 208
04-15 68° 83° 1886 1280 738 394 229
04-16 62° 76° 1933 1317 765 414 243
04-17 62° 74° 1979 1353 791 432 256
04-18 61° 76° 2025 1389 818 450 269
04-19 63° 82° 2076 1430 848 472 287
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-20 67° 82° 2128 1472 880 497 306
04-21 54° 72° 2169 1503 902 510 314
04-22 48° 54° 2198 1522 911 511 314
04-23 45° 63° 2230 1544 922 515 314
04-24 52° 75° 2271 1575 944 528 323
04-25 55° 76° 2314 1608 967 543 333
04-26 60° 85° 2364 1648 997 565 350
04-27 54° 74° 2406 1680 1019 579 358
04-28 50° 77° 2448 1712 1040 592 367
04-29 65° 84° 2500 1754 1073 617 386
04-30 70° 82° 2554 1798 1107 643 407
05-01 52° 70° 2593 1827 1126 654 413
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-02 51° 71° 2632 1856 1144 665 419
05-03 48° 64° 2665 1879 1158 670 420
05-04 52° 62° 2701 1905 1173 677 422
05-05 48° 58° 2732 1926 1184 681 422
05-06 43° 61° 2762 1946 1194 683 422
05-07 41° 66° 2793 1967 1206 686 422
05-08 41° 67° 2826 1990 1218 690 422
05-09 55° 82° 2872 2026 1245 709 435
05-10 65° 84° 2925 2069 1278 734 455
05-11 64° 75° 2972 2106 1305 753 470
05-12 58° 63° 3011 2135 1324 764 475
05-13 50° 75° 3052 2166 1344 776 483
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-14 56° 83° 3099 2203 1372 796 498
05-15 59° 84° 3149 2243 1401 818 514
05-16 63° 76° 3196 2280 1429 837 529
05-17 70° 85° 3252 2326 1465 865 551
05-18 75° 85° 3310 2374 1502 895 576
05-19 70° 84° 3365 2419 1537 921 598
05-20 66° 86° 3419 2463 1571 948 619
05-21 66° 79° 3469 2503 1602 970 636
05-22 53° 70° 3509 2533 1621 982 643
05-23 56° 76° 3552 2566 1645 997 654
05-24 58° 65° 3592 2596 1664 1009 660
05-25 57° 68° 3632 2626 1685 1021 667
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-26 56° 80° 3678 2662 1711 1039 680
05-27 67° 82° 3731 2705 1743 1064 700
05-28 63° 74° 3777 2741 1770 1082 714
05-29 64° 82° 3828 2782 1801 1105 732
05-30 63° 82° 3879 2823 1832 1128 749
05-31 63° 82° 3930 2864 1862 1151 767
06-01 63° 82° 3981 2905 1893 1173 785
06-02 63° 85° 4033 2947 1926 1198 804
06-03 59° 89° 4085 2989 1958 1222 823
06-04 61° 88° 4137 3031 1990 1246 843
06-05 67° 86° 4191 3075 2024 1272 864
06-06 63° 79° 4240 3114 2053 1293 880
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-07 59° 70° 4283 3147 2076 1308 889
06-08 54° 74° 4325 3179 2098 1322 899
06-09 56° 82° 4373 3217 2125 1342 913
06-10 63° 85° 4425 3259 2157 1365 932
06-11 65° 89° 4479 3303 2192 1392 953
06-12 71° 90° 4538 3352 2231 1423 979
06-13 70° 91° 4597 3401 2269 1454 1005
06-14 70° 91° 4656 3450 2308 1485 1031
06-15 68° 82° 4709 3493 2342 1510 1051
06-16 69° 87° 4765 3539 2378 1538 1074
06-17 70° 89° 4823 3587 2415 1567 1099
06-18 73° 85° 4879 3633 2452 1596 1123
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-19 66° 83° 4932 3676 2485 1621 1142
06-20 66° 82° 4985 3719 2517 1645 1162
06-21 68° 92° 5043 3767 2555 1675 1187
06-22 72° 81° 5097 3811 2590 1702 1208
06-23 72° 82° 5153 3857 2625 1729 1231
06-24 66° 79° 5203 3897 2656 1752 1248
06-25 56° 81° 5250 3934 2683 1771 1262
06-26 56° 78° 5295 3969 2708 1788 1274
06-27 58° 78° 5341 4005 2734 1806 1287
06-28 58° 83° 5389 4043 2762 1826 1303
06-29 70° 90° 5448 4092 2800 1857 1328
06-30 72° 86° 5505 4139 2837 1886 1352
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-01 69° 85° 5560 4184 2872 1913 1374
07-02 69° 88° 5616 4230 2909 1941 1397
07-03 65° 88° 5671 4275 2943 1968 1419
07-04 72° 82° 5726 4320 2978 1995 1441
07-05 71° 83° 5781 4365 3013 2022 1463
07-06 71° 78° 5833 4407 3046 2046 1482
07-07 68° 88° 5889 4453 3082 2074 1505
07-08 66° 85° 5942 4496 3115 2099 1526
07-09 63° 86° 5995 4539 3148 2124 1545
07-10 72° 87° 6053 4587 3186 2154 1570
07-11 76° 85° 6112 4636 3224 2184 1596
07-12 72° 90° 6171 4685 3263 2215 1622
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-13 77° 91° 6233 4737 3305 2250 1651
07-14 76° 88° 6293 4787 3346 2282 1678
07-15 66° 85° 6347 4831 3379 2308 1699
07-16 64° 88° 6401 4875 3414 2334 1720
07-17 67° 90° 6458 4922 3451 2363 1744
07-18 73° 90° 6518 4972 3490 2395 1771
07-19 71° 92° 6577 5021 3530 2426 1798
07-20 74° 93° 6639 5073 3572 2460 1826
07-21 78° 95° 6703 5127 3616 2496 1858
07-22 80° 95° 6769 5183 3662 2534 1891
07-23 71° 86° 6826 5230 3698 2563 1914
07-24 73° 89° 6885 5279 3738 2594 1940
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-25 68° 86° 6940 5324 3773 2621 1962
07-26 68° 89° 6996 5370 3809 2649 1986
07-27 78° 87° 7057 5421 3849 2682 2013
07-28 73° 84° 7113 5467 3886 2710 2037
07-29 64° 81° 7164 5508 3917 2733 2054
07-30 61° 85° 7215 5549 3948 2756 2072
07-31 64° 88° 7269 5593 3982 2782 2093
08-01 71° 88° 7327 5641 4019 2812 2118
08-02 69° 83° 7381 5685 4053 2838 2139
08-03 67° 86° 7435 5729 4088 2864 2161
08-04 65° 79° 7485 5769 4118 2886 2178
08-05 57° 79° 7532 5806 4144 2905 2191
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-06 64° 74° 7579 5843 4172 2924 2205
08-07 63° 77° 7627 5881 4200 2944 2220
08-08 63° 82° 7678 5922 4230 2967 2238
08-09 61° 83° 7728 5962 4261 2989 2255
08-10 66° 86° 7782 6006 4295 3015 2277
08-11 66° 84° 7835 6049 4328 3040 2296
08-12 70° 84° 7890 6094 4363 3067 2318
08-13 62° 84° 7941 6135 4394 3090 2336
08-14 69° 83° 7995 6179 4428 3116 2357
08-15 73° 89° 8054 6228 4467 3147 2383
08-16 72° 90° 8113 6277 4505 3178 2409
08-17 75° 89° 8172 6326 4545 3209 2436
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-18 73° 85° 8229 6373 4582 3238 2459
08-19 71° 87° 8286 6420 4619 3267 2483
08-20 69° 90° 8344 6468 4656 3297 2508
08-21 70° 90° 8402 6516 4694 3327 2533
08-22 72° 87° 8459 6563 4732 3356 2557
08-23 64° 80° 8509 6603 4762 3378 2574
08-24 59° 81° 8557 6641 4790 3398 2589
08-25 59° 79° 8604 6678 4817 3417 2603
08-26 58° 81° 8651 6715 4844 3436 2618
08-27 58° 85° 8701 6755 4873 3458 2634
08-28 65° 79° 8751 6795 4903 3480 2651
08-29 67° 79° 8802 6836 4935 3503 2669
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-30 65° 82° 8854 6878 4966 3527 2688
08-31 66° 86° 8908 6922 5000 3553 2709
09-01 55° 76° 8951 6955 5024 3568 2720
09-02 54° 66° 8989 6983 5042 3578 2725
09-03 54° 81° 9035 7019 5068 3596 2737
09-04 67° 86° 9089 7063 5102 3622 2758
09-05 61° 77° 9137 7101 5129 3641 2773
09-06 53° 69° 9176 7130 5148 3653 2779
09-07 50° 69° 9214 7158 5166 3662 2784
09-08 53° 77° 9257 7191 5189 3678 2794
09-09 55° 76° 9300 7224 5213 3693 2804
09-10 52° 76° 9342 7256 5235 3707 2813
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-11 54° 71° 9382 7286 5255 3719 2820
09-12 60° 72° 9426 7320 5279 3735 2831
09-13 62° 65° 9468 7352 5300 3749 2840
09-14 61° 74° 9513 7387 5326 3766 2852
09-15 61° 82° 9562 7426 5355 3787 2868
09-16 63° 85° 9614 7468 5387 3811 2887
09-17 63° 86° 9667 7511 5420 3836 2907
09-18 66° 84° 9720 7554 5452 3861 2927
09-19 69° 75° 9770 7594 5483 3883 2944
09-20 66° 87° 9825 7639 5517 3910 2966
09-21 69° 90° 9882 7686 5555 3939 2990
09-22 70° 89° 9940 7734 5592 3968 3015
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-23 66° 88° 9995 7779 5627 3996 3037
09-24 66° 89° 10000 7825 5663 4024 3060
09-25 65° 88° 10000 7869 5698 4050 3081
09-26 67° 89° 10000 7915 5733 4078 3104
09-27 66° 89° 10000 7960 5769 4105 3127
09-28 59° 75° 10000 7995 5794 4122 3138
09-29 54° 79° 10000 8030 5818 4138 3150
09-30 52° 73° 10000 8060 5839 4151 3157

 

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.