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

 
  

Indianapolis, 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 44° 65° 116 67 32 14 4
02-20 64° 75° 163 104 59 33 19
02-21 37° 65° 193 123 68 34 19
02-22 36° 44° 211 131 68 34 19
02-23 44° 54° 237 148 75 34 19
02-24 41° 54° 263 163 80 34 19
02-25 37° 57° 287 178 85 34 19
02-26 30° 54° 308 188 85 34 19
02-27 33° 61° 333 203 90 34 19
02-28 50° 59° 365 226 103 39 19
03-01 35° 55° 388 239 106 39 19
03-02 32° 47° 406 246 106 39 19
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-03 27° 48° 421 252 106 39 19
03-04 30° 49° 439 260 106 39 19
03-05 31° 44° 455 266 106 39 19
03-06 33° 51° 475 276 106 39 19
03-07 30° 36° 486 277 106 39 19
03-08 23° 29° 490 277 106 39 19
03-09 24° 42° 501 278 106 39 19
03-10 26° 47° 516 282 106 39 19
03-11 29° 41° 529 286 106 39 19
03-12 25° 39° 539 286 106 39 19
03-13 25° 38° 549 286 106 39 19
03-14 20° 42° 558 286 106 39 19
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-15 32° 53° 579 296 107 39 19
03-16 23° 44° 590 298 107 39 19
03-17 33° 40° 605 302 107 39 19
03-18 25° 55° 623 310 107 39 19
03-19 36° 59° 648 326 112 39 19
03-20 28° 41° 661 328 112 39 19
03-21 27° 45° 675 332 112 39 19
03-22 25° 47° 689 337 112 39 19
03-23 27° 49° 705 343 112 39 19
03-24 30° 39° 718 345 112 39 19
03-25 25° 43° 730 347 112 39 19
03-26 31° 54° 750 358 112 39 19
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-27 49° 56° 780 378 123 41 19
03-28 46° 55° 809 396 131 41 19
03-29 44° 54° 836 413 138 41 19
03-30 37° 50° 857 425 140 41 19
03-31 35° 56° 881 438 143 41 19
04-01 31° 48° 898 446 143 41 19
04-02 28° 45° 913 451 143 41 19
04-03 42° 65° 945 473 155 45 19
04-04 31° 43° 960 477 155 45 19
04-05 26° 48° 975 483 155 45 19
04-06 29° 51° 993 491 155 45 19
04-07 27° 40° 1005 492 155 45 19
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-08 24° 41° 1015 493 155 45 19
04-09 32° 41° 1030 497 155 45 19
04-10 30° 42° 1044 501 155 45 19
04-11 32° 63° 1069 517 160 45 19
04-12 53° 78° 1113 550 184 60 29
04-13 64° 78° 1162 589 213 81 45
04-14 56° 70° 1202 620 234 94 53
04-15 40° 56° 1228 635 239 94 53
04-16 30° 38° 1240 637 239 94 53
04-17 32° 44° 1256 643 239 94 53
04-18 33° 67° 1284 661 247 94 53
04-19 35° 54° 1306 674 250 94 53
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-20 31° 60° 1330 687 253 94 53
04-21 39° 61° 1358 705 261 94 53
04-22 46° 67° 1393 730 276 101 55
04-23 49° 56° 1423 751 287 103 55
04-24 51° 56° 1455 772 298 107 55
04-25 48° 64° 1489 796 312 113 56
04-26 37° 66° 1518 816 322 114 56
04-27 42° 65° 1550 837 333 118 56
04-28 41° 60° 1578 856 342 118 56
04-29 32° 61° 1603 870 346 118 56
04-30 37° 74° 1636 894 360 124 56
05-01 46° 82° 1678 926 382 138 65
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-02 62° 86° 1730 968 414 162 84
05-03 65° 77° 1780 1007 443 183 101
05-04 60° 77° 1826 1044 470 202 114
05-05 53° 74° 1867 1075 491 215 122
05-06 53° 82° 1913 1110 516 232 135
05-07 50° 73° 1953 1140 536 244 142
05-08 47° 79° 1993 1171 557 257 149
05-09 52° 82° 2038 1206 582 274 161
05-10 59° 81° 2087 1244 610 294 177
05-11 60° 85° 2137 1285 641 317 194
05-12 71° 83° 2192 1330 676 344 216
05-13 63° 85° 2244 1372 708 368 235
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-14 67° 89° 2300 1418 744 396 258
05-15 68° 81° 2353 1460 776 420 278
05-16 65° 79° 2403 1500 806 442 295
05-17 59° 83° 2452 1539 835 463 311
05-18 64° 73° 2498 1576 862 482 324
05-19 66° 78° 2549 1616 892 504 342
05-20 63° 84° 2600 1658 924 528 360
05-21 64° 80° 2651 1698 954 550 378
05-22 65° 82° 2702 1740 986 574 396
05-23 58° 83° 2750 1778 1014 594 411
05-24 60° 84° 2800 1818 1044 616 428
05-25 59° 88° 2852 1859 1075 639 447
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-26 70° 85° 2907 1905 1111 667 469
05-27 68° 92° 2965 1952 1148 696 494
05-28 68° 94° 3024 2001 1187 727 520
05-29 70° 90° 3082 2049 1225 757 545
05-30 73° 80° 3136 2094 1260 784 566
05-31 73° 85° 3193 2140 1296 812 590
06-01 70° 84° 3248 2185 1331 839 612
06-02 62° 87° 3300 2228 1364 864 631
06-03 71° 81° 3354 2272 1398 890 652
06-04 56° 77° 3399 2307 1423 907 664
06-05 59° 86° 3450 2347 1453 929 682
06-06 56° 80° 3496 2383 1479 947 695
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-07 63° 91° 3551 2429 1515 975 717
06-08 70° 91° 3610 2477 1553 1005 743
06-09 68° 88° 3666 2523 1589 1033 766
06-10 65° 70° 3711 2559 1615 1051 778
06-11 65° 77° 3760 2598 1644 1072 794
06-12 67° 79° 3811 2639 1675 1095 812
06-13 69° 84° 3866 2683 1709 1121 834
06-14 57° 82° 3913 2721 1737 1141 848
06-15 65° 88° 3967 2765 1771 1167 869
06-16 71° 92° 4027 2815 1811 1199 896
06-17 74° 92° 4088 2866 1852 1232 924
06-18 75° 92° 4150 2917 1893 1265 953
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-19 73° 90° 4209 2967 1933 1297 979
06-20 71° 83° 4264 3012 1968 1324 1001
06-21 67° 77° 4314 3052 1998 1346 1018
06-22 66° 76° 4363 3091 2027 1367 1034
06-23 65° 74° 4410 3128 2054 1386 1048
06-24 65° 83° 4462 3170 2086 1410 1067
06-25 67° 77° 4512 3209 2115 1431 1084
06-26 67° 75° 4561 3249 2145 1453 1100
06-27 69° 82° 4615 3292 2178 1478 1121
06-28 67° 85° 4669 3336 2212 1504 1142
06-29 69° 91° 4726 3384 2250 1534 1166
06-30 72° 90° 4785 3433 2289 1565 1192
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-01 74° 92° 4847 3484 2330 1598 1221
07-02 74° 87° 4905 3533 2369 1629 1246
07-03 74° 90° 4965 3583 2409 1661 1273
07-04 74° 92° 5026 3634 2450 1694 1301
07-05 73° 89° 5086 3683 2489 1725 1328
07-06 69° 81° 5139 3726 2522 1750 1348
07-07 59° 80° 5186 3764 2550 1770 1362
07-08 58° 86° 5236 3804 2580 1792 1379
07-09 68° 89° 5293 3850 2616 1820 1403
07-10 72° 90° 5351 3899 2655 1851 1428
07-11 68° 86° 5407 3944 2690 1878 1451
07-12 63° 85° 5458 3986 2722 1902 1469
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-13 63° 90° 5512 4030 2756 1928 1490
07-14 67° 90° 5569 4077 2793 1957 1514
07-15 74° 88° 5628 4126 2832 1988 1540
07-16 72° 86° 5685 4172 2868 2016 1564
07-17 69° 86° 5740 4218 2904 2044 1586
07-18 58° 84° 5789 4257 2933 2065 1602
07-19 63° 86° 5842 4300 2966 2090 1622
07-20 69° 89° 5899 4347 3003 2119 1646
07-21 68° 74° 5948 4386 3032 2140 1662
07-22 68° 78° 5999 4427 3063 2163 1680
07-23 62° 76° 6046 4463 3089 2181 1694
07-24 63° 84° 6098 4505 3121 2205 1713
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-25 66° 85° 6151 4549 3155 2231 1733
07-26 62° 84° 6202 4590 3186 2254 1751
07-27 59° 78° 6249 4627 3213 2273 1765
07-28 57° 80° 6296 4663 3239 2291 1779
07-29 61° 76° 6342 4700 3266 2310 1792
07-30 64° 71° 6388 4735 3291 2327 1805
07-31 65° 70° 6433 4771 3317 2345 1817
08-01 63° 77° 6481 4809 3345 2365 1832
08-02 59° 83° 6530 4847 3373 2385 1848
08-03 64° 84° 6582 4889 3405 2409 1867
08-04 69° 89° 6639 4936 3442 2438 1891
08-05 68° 88° 6695 4982 3478 2466 1914
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-06 71° 89° 6753 5030 3516 2496 1939
08-07 68° 82° 6806 5074 3550 2522 1959
08-08 71° 83° 6861 5119 3585 2549 1981
08-09 64° 85° 6914 5161 3617 2573 2001
08-10 69° 86° 6969 5207 3653 2601 2023
08-11 66° 80° 7020 5248 3684 2624 2041
08-12 62° 84° 7072 5289 3715 2647 2060
08-13 63° 84° 7123 5331 3747 2671 2078
08-14 65° 85° 7176 5374 3780 2696 2098
08-15 70° 76° 7227 5415 3811 2719 2116
08-16 68° 79° 7279 5456 3842 2742 2135
08-17 69° 78° 7330 5498 3874 2766 2153
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-18 68° 81° 7383 5541 3907 2791 2173
08-19 65° 84° 7436 5583 3939 2815 2193
08-20 67° 82° 7488 5626 3972 2840 2212
08-21 67° 79° 7539 5667 4003 2863 2230
08-22 60° 75° 7585 5702 4028 2880 2243
08-23 54° 79° 7629 5736 4052 2896 2254
08-24 55° 74° 7671 5769 4075 2911 2263
08-25 67° 80° 7723 5810 4106 2934 2282
08-26 74° 89° 7782 5860 4146 2966 2308
08-27 73° 89° 7841 5909 4185 2997 2334
08-28 72° 90° 7900 5958 4224 3028 2360
08-29 71° 86° 7957 6004 4260 3056 2384
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-30 65° 80° 8007 6045 4291 3079 2401
08-31 61° 85° 8058 6085 4321 3101 2419
09-01 68° 83° 8112 6129 4355 3127 2440
09-02 70° 88° 8168 6176 4392 3156 2463
09-03 71° 91° 8227 6225 4431 3187 2489
09-04 71° 91° 8287 6274 4470 3218 2516
09-05 71° 92° 8346 6323 4509 3249 2542
09-06 70° 87° 8402 6370 4546 3278 2565
09-07 66° 74° 8450 6408 4574 3298 2580
09-08 61° 66° 8492 6439 4595 3311 2589
09-09 57° 60° 8528 6466 4612 3320 2592
09-10 56° 69° 8569 6496 4632 3332 2600
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-11 52° 74° 8610 6528 4654 3346 2608
09-12 55° 73° 8652 6560 4676 3360 2617
09-13 60° 82° 8701 6599 4705 3381 2633
09-14 63° 86° 8754 6641 4737 3405 2653
09-15 64° 86° 8807 6684 4770 3430 2673
09-16 68° 88° 8863 6730 4806 3458 2696
09-17 69° 89° 8919 6777 4843 3487 2719
09-18 67° 91° 8976 6824 4880 3516 2743
09-19 70° 90° 9034 6872 4918 3546 2768
09-20 70° 91° 9092 6920 4956 3576 2793
09-21 66° 82° 9144 6962 4988 3600 2812
09-22 55° 64° 9182 6990 5006 3610 2817
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-23 52° 78° 9225 7023 5029 3625 2827
09-24 60° 70° 9269 7056 5052 3640 2838
09-25 70° 77° 9320 7098 5084 3664 2856
09-26 55° 71° 9361 7129 5105 3677 2864
09-27 51° 62° 9396 7153 5119 3683 2866
09-28 45° 73° 9433 7180 5136 3692 2870
09-29 47° 66° 9467 7205 5151 3699 2871
09-30 53° 79° 9512 7239 5175 3715 2883
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
02-19 47° 64° 147 87 40 14 1
02-20 38° 66° 177 107 50 16 1
02-21 52° 64° 213 133 66 24 4
02-22 51° 66° 249 159 83 32 7
02-23 53° 68° 288 188 101 43 12
02-24 47° 72° 326 216 119 52 17
02-25 27° 44° 339 219 119 52 17
02-26 22° 46° 351 221 119 52 17
02-27 40° 52° 374 234 123 52 17
02-28 45° 63° 406 256 134 56 17
03-01 38° 62° 434 274 142 56 17
03-02 31° 40° 447 277 142 56 17
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-03 27° 35° 456 277 142 56 17
03-04 29° 46° 472 283 142 56 17
03-05 31° 66° 499 300 149 56 17
03-06 51° 60° 532 323 162 62 18
03-07 42° 62° 562 343 172 63 18
03-08 39° 58° 589 360 179 63 18
03-09 35° 62° 615 376 185 63 18
03-10 29° 41° 628 379 185 63 18
03-11 25° 28° 633 379 185 63 18
03-12 20° 36° 638 379 185 63 18
03-13 27° 32° 646 379 185 63 18
03-14 20° 30° 649 379 185 63 18
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-15 20° 32° 653 379 185 63 18
03-16 18° 43° 661 379 185 63 18
03-17 30° 46° 677 385 185 63 18
03-18 37° 46° 697 395 185 63 18
03-19 32° 52° 717 405 185 63 18
03-20 40° 50° 740 418 188 63 18
03-21 41° 58° 768 435 196 63 18
03-22 27° 41° 780 437 196 63 18
03-23 27° 57° 800 447 196 63 18
03-24 52° 74° 841 478 217 76 26
03-25 60° 76° 886 514 243 94 38
03-26 54° 61° 922 540 258 102 41
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-27 48° 64° 956 564 272 108 42
03-28 50° 57° 987 585 284 111 42
03-29 47° 59° 1019 606 295 115 42
03-30 52° 71° 1059 636 315 126 49
03-31 40° 59° 1086 654 322 126 49
04-01 39° 56° 1112 670 328 126 49
04-02 40° 64° 1142 690 338 128 49
04-03 52° 69° 1180 718 357 139 55
04-04 51° 59° 1214 741 370 144 55
04-05 46° 58° 1244 762 380 146 55
04-06 37° 48° 1264 772 381 146 55
04-07 35° 54° 1287 784 383 146 55
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-08 32° 65° 1313 801 390 146 55
04-09 49° 77° 1354 832 411 159 63
04-10 61° 73° 1399 867 435 176 74
04-11 53° 66° 1436 894 453 186 79
04-12 41° 67° 1468 916 465 189 79
04-13 46° 78° 1508 946 484 201 86
04-14 52° 82° 1553 981 509 218 97
04-15 62° 81° 1602 1020 539 240 114
04-16 63° 73° 1648 1056 565 257 127
04-17 53° 69° 1687 1085 584 268 133
04-18 48° 78° 1728 1116 605 281 141
04-19 62° 81° 1778 1155 634 303 157
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-20 64° 78° 1827 1195 663 324 173
04-21 46° 60° 1858 1216 674 327 173
04-22 44° 57° 1887 1234 683 328 173
04-23 40° 70° 1920 1258 697 333 174
04-24 46° 77° 1960 1287 716 345 180
04-25 52° 77° 2002 1319 738 359 189
04-26 61° 84° 2052 1360 769 381 207
04-27 51° 69° 2090 1388 787 391 212
04-28 45° 62° 2122 1409 798 395 212
04-29 56° 74° 2165 1442 821 410 222
04-30 56° 68° 2205 1473 841 422 229
05-01 50° 69° 2242 1500 858 431 233
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-02 45° 60° 2273 1520 869 434 233
05-03 40° 54° 2297 1535 874 434 233
05-04 46° 49° 2323 1551 879 434 233
05-05 44° 56° 2351 1569 888 434 233
05-06 42° 60° 2380 1588 897 435 233
05-07 39° 60° 2408 1605 904 435 233
05-08 35° 65° 2435 1623 912 435 233
05-09 49° 68° 2472 1650 928 444 237
05-10 54° 80° 2517 1685 954 461 249
05-11 57° 68° 2558 1716 974 474 257
05-12 53° 69° 2597 1744 993 484 262
05-13 47° 75° 2636 1773 1012 495 268
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-14 58° 82° 2684 1812 1040 516 284
05-15 59° 84° 2734 1851 1070 537 300
05-16 61° 76° 2780 1888 1096 556 314
05-17 68° 83° 2834 1931 1130 581 334
05-18 72° 86° 2891 1979 1167 611 359
05-19 63° 76° 2939 2016 1195 631 374
05-20 54° 78° 2983 2050 1219 647 385
05-21 59° 73° 3027 2085 1244 663 396
05-22 48° 72° 3065 2113 1262 673 401
05-23 56° 74° 3109 2146 1285 688 411
05-24 59° 64° 3148 2176 1305 700 418
05-25 55° 64° 3186 2203 1322 710 423
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-26 51° 79° 3229 2237 1345 725 433
05-27 68° 78° 3280 2278 1376 748 451
05-28 63° 76° 3327 2315 1404 767 465
05-29 58° 83° 3376 2354 1432 788 481
05-30 57° 77° 3421 2388 1457 804 492
05-31 55° 78° 3465 2423 1482 821 504
06-01 54° 79° 3510 2457 1506 837 515
06-02 54° 84° 3557 2494 1533 856 529
06-03 59° 87° 3608 2535 1564 879 547
06-04 66° 89° 3663 2580 1599 907 570
06-05 70° 89° 3720 2628 1637 936 594
06-06 58° 78° 3766 2664 1663 954 607
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-07 57° 72° 3809 2697 1686 969 617
06-08 52° 77° 3852 2730 1708 984 627
06-09 59° 84° 3901 2769 1738 1005 643
06-10 62° 87° 3954 2812 1770 1030 663
06-11 66° 87° 4009 2856 1805 1056 684
06-12 69° 91° 4066 2904 1843 1086 709
06-13 73° 83° 4122 2950 1879 1114 732
06-14 69° 87° 4178 2996 1915 1142 755
06-15 67° 81° 4231 3038 1947 1166 774
06-16 67° 87° 4285 3083 1982 1193 796
06-17 71° 85° 4341 3129 2018 1221 819
06-18 70° 79° 4394 3171 2050 1246 839
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-19 62° 80° 4443 3210 2079 1267 855
06-20 59° 79° 4490 3247 2106 1285 868
06-21 66° 88° 4545 3292 2141 1312 890
06-22 71° 83° 4600 3337 2176 1339 912
06-23 65° 76° 4648 3376 2205 1360 928
06-24 61° 75° 4694 3412 2230 1378 941
06-25 56° 74° 4737 3445 2254 1393 951
06-26 54° 71° 4778 3476 2274 1406 959
06-27 51° 74° 4818 3506 2295 1418 966
06-28 55° 81° 4864 3542 2321 1436 979
06-29 69° 88° 4921 3589 2358 1465 1003
06-30 69° 81° 4974 3632 2391 1490 1023
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-01 68° 82° 5027 3675 2424 1515 1043
07-02 64° 84° 5080 3717 2456 1539 1062
07-03 66° 87° 5134 3762 2491 1566 1084
07-04 68° 87° 5190 3807 2526 1594 1107
07-05 68° 85° 5244 3852 2561 1620 1128
07-06 72° 82° 5299 3897 2596 1647 1150
07-07 66° 86° 5353 3941 2629 1673 1171
07-08 63° 78° 5402 3980 2658 1694 1187
07-09 58° 82° 5450 4018 2687 1714 1202
07-10 72° 84° 5506 4064 2722 1742 1225
07-11 69° 79° 5558 4106 2754 1766 1244
07-12 71° 88° 5616 4153 2792 1796 1269
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-13 74° 84° 5673 4201 2829 1825 1293
07-14 70° 81° 5727 4244 2863 1850 1313
07-15 60° 80° 5774 4282 2891 1870 1328
07-16 63° 85° 5826 4324 2923 1894 1347
07-17 69° 84° 5881 4368 2957 1920 1368
07-18 70° 87° 5937 4415 2994 1949 1392
07-19 68° 87° 5993 4461 3029 1977 1415
07-20 73° 88° 6051 4509 3068 2007 1440
07-21 72° 88° 6110 4557 3106 2037 1465
07-22 74° 88° 6168 4606 3145 2068 1491
07-23 71° 81° 6222 4650 3179 2094 1512
07-24 67° 80° 6274 4692 3211 2118 1531
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-25 61° 80° 6323 4730 3239 2138 1546
07-26 62° 84° 6374 4771 3270 2161 1564
07-27 74° 78° 6428 4815 3304 2187 1585
07-28 70° 81° 6481 4859 3337 2213 1606
07-29 59° 78° 6527 4895 3364 2231 1619
07-30 58° 82° 6575 4933 3392 2251 1634
07-31 63° 84° 6627 4974 3423 2274 1652
08-01 66° 82° 6679 5016 3455 2299 1672
08-02 65° 83° 6731 5059 3487 2323 1691
08-03 67° 84° 6784 5102 3521 2348 1711
08-04 58° 75° 6829 5137 3545 2365 1723
08-05 54° 76° 6872 5170 3568 2380 1733
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-06 63° 72° 6917 5205 3594 2397 1745
08-07 65° 78° 6967 5244 3623 2418 1761
08-08 57° 80° 7013 5281 3649 2437 1775
08-09 56° 82° 7060 5317 3676 2455 1788
08-10 60° 84° 7110 5357 3706 2477 1805
08-11 69° 81° 7162 5400 3739 2502 1825
08-12 61° 79° 7211 5438 3767 2522 1840
08-13 56° 81° 7257 5475 3794 2541 1854
08-14 63° 84° 7309 5516 3825 2564 1872
08-15 65° 87° 7363 5560 3859 2590 1893
08-16 68° 88° 7419 5606 3895 2618 1916
08-17 74° 84° 7476 5654 3932 2648 1941
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-18 66° 84° 7529 5697 3966 2673 1961
08-19 67° 87° 7584 5742 4001 2700 1983
08-20 65° 90° 7640 5788 4036 2728 2006
08-21 70° 88° 7697 5834 4073 2757 2030
08-22 67° 80° 7748 5876 4105 2780 2048
08-23 59° 77° 7794 5912 4131 2798 2061
08-24 55° 77° 7838 5946 4155 2814 2072
08-25 56° 76° 7882 5980 4179 2830 2083
08-26 53° 79° 7926 6014 4203 2846 2094
08-27 56° 81° 7973 6051 4229 2865 2108
08-28 63° 80° 8022 6090 4259 2886 2124
08-29 62° 79° 8071 6128 4287 2907 2140
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-30 61° 80° 8119 6167 4316 2927 2155
08-31 60° 79° 8167 6205 4343 2947 2170
09-01 58° 66° 8207 6234 4363 2958 2176
09-02 54° 76° 8250 6267 4386 2973 2186
09-03 58° 82° 8298 6305 4414 2993 2201
09-04 56° 88° 8348 6345 4444 3015 2218
09-05 58° 72° 8390 6378 4467 3030 2228
09-06 48° 65° 8425 6402 4481 3036 2229
09-07 47° 67° 8459 6427 4496 3043 2231
09-08 48° 77° 8500 6458 4517 3056 2239
09-09 57° 74° 8543 6491 4540 3071 2249
09-10 47° 74° 8582 6519 4558 3081 2254
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-11 48° 74° 8620 6548 4577 3092 2260
09-12 56° 74° 8663 6581 4600 3107 2270
09-13 62° 66° 8705 6613 4622 3121 2279
09-14 62° 75° 8752 6649 4648 3139 2292
09-15 55° 83° 8799 6686 4675 3158 2306
09-16 62° 85° 8850 6728 4706 3182 2325
09-17 65° 88° 8904 6772 4741 3208 2346
09-18 69° 82° 8958 6816 4774 3234 2367
09-19 68° 80° 9010 6858 4806 3258 2386
09-20 65° 89° 9065 6903 4841 3285 2408
09-21 69° 90° 9123 6950 4879 3315 2433
09-22 69° 91° 9181 6998 4917 3345 2458
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-23 66° 90° 9237 7045 4953 3373 2481
09-24 64° 90° 9292 7090 4989 3400 2503
09-25 60° 89° 9345 7133 5021 3425 2523
09-26 66° 90° 9401 7178 5057 3452 2545
09-27 63° 78° 9449 7217 5086 3473 2561
09-28 53° 73° 9490 7248 5106 3486 2569
09-29 47° 76° 9530 7278 5126 3498 2576
09-30 48° 71° 9567 7305 5143 3507 2580

 

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.