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Crabgrass/Annual Bluegrass Preemergence Timer (GDD 32)
through Tue, Sep. 25. 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 43° 65° 115 66 32 14 4
02-20 63° 75° 162 104 59 33 18
02-21 37° 66° 192 123 68 34 18
02-22 36° 44° 210 131 68 34 18
02-23 43° 55° 237 148 75 34 18
02-24 41° 53° 262 163 80 34 18
02-25 37° 56° 287 178 85 34 18
02-26 30° 54° 307 188 85 34 18
02-27 33° 61° 332 203 90 34 18
02-28 50° 59° 365 226 103 39 18
03-01 35° 55° 388 239 106 39 18
03-02 32° 47° 405 247 106 39 18
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-03 27° 48° 421 252 106 39 18
03-04 29° 49° 438 259 106 39 18
03-05 31° 44° 453 265 106 39 18
03-06 33° 52° 474 275 106 39 18
03-07 30° 36° 485 276 106 39 18
03-08 23° 29° 489 276 106 39 18
03-09 21° 42° 499 276 106 39 18
03-10 26° 46° 513 280 106 39 18
03-11 29° 41° 526 283 106 39 18
03-12 24° 39° 535 283 106 39 18
03-13 28° 37° 546 284 106 39 18
03-14 23° 41° 556 284 106 39 18
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-15 32° 54° 577 295 107 39 18
03-16 23° 43° 588 296 107 39 18
03-17 32° 40° 602 300 107 39 18
03-18 26° 55° 620 309 107 39 18
03-19 35° 59° 645 324 112 39 18
03-20 29° 42° 659 327 112 39 18
03-21 27° 45° 673 331 112 39 18
03-22 26° 47° 687 336 112 39 18
03-23 27° 48° 703 341 112 39 18
03-24 30° 37° 715 343 112 39 18
03-25 25° 43° 727 345 112 39 18
03-26 32° 53° 747 356 112 39 18
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-27 48° 55° 777 375 122 40 18
03-28 46° 54° 805 393 130 40 18
03-29 44° 53° 832 410 137 40 18
03-30 39° 51° 855 423 140 40 18
03-31 35° 55° 878 436 143 40 18
04-01 31° 49° 896 444 143 40 18
04-02 28° 44° 910 448 143 40 18
04-03 42° 66° 942 470 155 44 18
04-04 31° 43° 957 476 155 44 18
04-05 26° 48° 972 481 155 44 18
04-06 29° 52° 991 489 155 44 18
04-07 27° 40° 1003 491 155 44 18
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-08 24° 41° 1013 491 155 44 18
04-09 31° 40° 1027 495 155 44 18
04-10 29° 43° 1041 499 155 44 18
04-11 32° 64° 1067 515 161 44 18
04-12 54° 78° 1110 549 185 60 29
04-13 64° 79° 1160 588 214 82 46
04-14 56° 70° 1201 619 235 95 54
04-15 40° 57° 1228 636 242 95 54
04-16 30° 39° 1240 639 242 95 54
04-17 31° 44° 1256 644 242 95 54
04-18 33° 67° 1284 662 250 95 54
04-19 34° 55° 1306 675 253 95 54
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-20 30° 60° 1330 688 256 95 54
04-21 38° 60° 1357 705 263 95 54
04-22 46° 67° 1391 729 277 101 55
04-23 49° 56° 1421 750 288 104 55
04-24 51° 56° 1453 771 299 107 55
04-25 48° 64° 1487 795 313 113 56
04-26 37° 66° 1517 815 323 115 56
04-27 40° 65° 1548 836 334 118 56
04-28 41° 59° 1576 854 342 118 56
04-29 31° 61° 1600 868 346 118 56
04-30 35° 74° 1632 890 358 122 56
05-01 48° 82° 1675 923 381 137 66
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-02 63° 86° 1727 966 414 161 86
05-03 66° 77° 1777 1006 444 183 103
05-04 61° 76° 1824 1042 470 202 116
05-05 53° 73° 1864 1073 491 214 124
05-06 53° 82° 1910 1108 516 232 136
05-07 50° 73° 1950 1138 536 244 143
05-08 47° 79° 1990 1169 557 256 151
05-09 53° 83° 2036 1204 582 274 163
05-10 60° 81° 2085 1243 611 295 179
05-11 59° 85° 2135 1283 641 317 196
05-12 70° 81° 2189 1327 675 343 217
05-13 62° 85° 2240 1369 707 366 236
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-14 67° 90° 2297 1415 743 395 259
05-15 69° 83° 2351 1459 777 421 280
05-16 65° 79° 2401 1499 807 443 297
05-17 59° 83° 2450 1538 836 464 313
05-18 63° 72° 2495 1573 861 481 325
05-19 66° 78° 2545 1613 891 503 342
05-20 63° 84° 2597 1655 923 527 361
05-21 64° 81° 2647 1695 953 549 378
05-22 65° 82° 2699 1737 985 573 397
05-23 57° 82° 2746 1775 1013 593 412
05-24 58° 84° 2796 1814 1042 614 428
05-25 58° 88° 2847 1855 1073 637 446
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-26 70° 86° 2902 1901 1109 664 469
05-27 68° 91° 2960 1948 1146 694 493
05-28 68° 94° 3019 1997 1185 725 519
05-29 69° 90° 3077 2045 1223 755 544
05-30 73° 81° 3131 2090 1258 782 566
05-31 73° 85° 3188 2137 1295 810 590
06-01 70° 84° 3243 2181 1329 837 611
06-02 62° 86° 3295 2224 1362 862 631
06-03 71° 81° 3350 2268 1396 888 652
06-04 56° 77° 3394 2303 1421 904 664
06-05 59° 86° 3445 2343 1451 927 681
06-06 54° 79° 3489 2378 1476 943 693
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-07 62° 90° 3543 2422 1510 970 714
06-08 70° 90° 3601 2470 1548 1000 739
06-09 67° 89° 3658 2516 1584 1028 762
06-10 65° 70° 3703 2551 1609 1045 774
06-11 66° 77° 3753 2591 1639 1067 791
06-12 67° 79° 3803 2632 1670 1090 809
06-13 69° 83° 3857 2676 1704 1115 830
06-14 56° 82° 3904 2712 1730 1134 843
06-15 64° 87° 3958 2756 1764 1160 864
06-16 70° 92° 4017 2805 1803 1191 890
06-17 74° 92° 4078 2856 1844 1224 918
06-18 75° 92° 4139 2908 1886 1257 947
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-19 74° 90° 4199 2958 1926 1289 974
06-20 71° 83° 4254 3003 1961 1316 996
06-21 67° 77° 4305 3043 1991 1339 1013
06-22 66° 75° 4353 3081 2019 1359 1028
06-23 65° 74° 4401 3119 2047 1379 1043
06-24 65° 83° 4453 3161 2079 1403 1062
06-25 67° 76° 4502 3201 2109 1424 1079
06-26 67° 74° 4551 3239 2137 1445 1094
06-27 69° 82° 4604 3283 2171 1470 1115
06-28 67° 86° 4658 3327 2205 1496 1136
06-29 68° 89° 4715 3373 2241 1525 1159
06-30 71° 90° 4774 3422 2280 1556 1185
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-01 74° 91° 4835 3473 2321 1589 1213
07-02 74° 87° 4893 3521 2359 1619 1238
07-03 74° 90° 4953 3571 2399 1651 1265
07-04 74° 91° 5013 3622 2440 1683 1293
07-05 73° 90° 5073 3671 2479 1715 1319
07-06 68° 81° 5126 3714 2512 1740 1339
07-07 58° 80° 5173 3751 2539 1759 1353
07-08 58° 86° 5222 3791 2569 1781 1370
07-09 67° 89° 5278 3837 2605 1809 1393
07-10 71° 89° 5337 3885 2643 1839 1418
07-11 69° 86° 5392 3930 2678 1866 1440
07-12 62° 85° 5444 3972 2710 1890 1459
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-13 62° 90° 5498 4016 2744 1916 1480
07-14 67° 91° 5554 4063 2781 1944 1504
07-15 73° 88° 5613 4111 2819 1975 1529
07-16 72° 86° 5670 4158 2856 2004 1553
07-17 68° 86° 5725 4203 2891 2031 1575
07-18 58° 84° 5774 4242 2920 2052 1591
07-19 63° 86° 5826 4285 2953 2077 1611
07-20 69° 87° 5882 4331 2989 2105 1634
07-21 68° 73° 5931 4369 3017 2125 1649
07-22 68° 77° 5982 4410 3048 2148 1667
07-23 61° 75° 6028 4446 3074 2166 1680
07-24 63° 82° 6078 4487 3105 2188 1698
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-25 64° 84° 6130 4529 3137 2213 1717
07-26 62° 84° 6181 4570 3168 2236 1735
07-27 60° 77° 6228 4606 3194 2254 1748
07-28 56° 79° 6274 4642 3220 2272 1761
07-29 61° 76° 6321 4679 3247 2291 1775
07-30 64° 71° 6366 4714 3272 2308 1787
07-31 65° 70° 6412 4750 3298 2326 1800
08-01 63° 76° 6460 4788 3326 2346 1815
08-02 60° 82° 6509 4827 3355 2367 1831
08-03 64° 84° 6561 4869 3387 2391 1850
08-04 69° 88° 6617 4916 3424 2419 1874
08-05 69° 88° 6674 4962 3460 2448 1897
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-06 71° 89° 6731 5010 3498 2477 1922
08-07 68° 83° 6785 5053 3531 2503 1942
08-08 70° 83° 6840 5098 3566 2530 1964
08-09 64° 84° 6892 5140 3598 2554 1983
08-10 69° 85° 6947 5185 3633 2581 2005
08-11 67° 80° 6998 5227 3665 2604 2024
08-12 62° 84° 7049 5268 3696 2627 2042
08-13 63° 83° 7101 5309 3727 2651 2060
08-14 65° 85° 7153 5352 3760 2675 2080
08-15 70° 77° 7205 5393 3791 2699 2098
08-16 68° 79° 7256 5434 3822 2722 2116
08-17 70° 77° 7308 5476 3854 2746 2135
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-18 68° 82° 7361 5519 3887 2771 2155
08-19 66° 84° 7414 5562 3920 2796 2175
08-20 67° 81° 7466 5604 3952 2820 2194
08-21 68° 79° 7517 5645 3983 2843 2212
08-22 60° 74° 7562 5680 4008 2860 2224
08-23 53° 78° 7606 5714 4032 2876 2235
08-24 55° 74° 7648 5747 4055 2890 2245
08-25 68° 79° 7700 5788 4086 2914 2263
08-26 74° 89° 7759 5837 4125 2945 2289
08-27 73° 89° 7818 5886 4164 2976 2315
08-28 72° 89° 7876 5935 4203 3007 2341
08-29 71° 86° 7933 5981 4239 3035 2364
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-30 65° 80° 7984 6022 4270 3058 2382
08-31 61° 86° 8035 6064 4302 3081 2401
09-01 69° 83° 8089 6107 4335 3107 2421
09-02 70° 87° 8146 6154 4372 3136 2445
09-03 71° 91° 8204 6203 4411 3166 2471
09-04 71° 91° 8263 6252 4450 3197 2497
09-05 71° 92° 8322 6301 4489 3228 2523
09-06 70° 86° 8379 6347 4525 3257 2546
09-07 67° 73° 8427 6385 4553 3277 2561
09-08 60° 66° 8468 6416 4574 3290 2569
09-09 57° 60° 8504 6442 4590 3298 2572
09-10 56° 67° 8544 6472 4610 3310 2579
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-11 55° 74° 8586 6505 4633 3325 2589
09-12 56° 73° 8629 6537 4655 3339 2598
09-13 61° 82° 8679 6577 4685 3361 2615
09-14 63° 86° 8731 6619 4717 3385 2634
09-15 63° 86° 8784 6662 4750 3410 2654
09-16 67° 87° 8839 6707 4785 3437 2676
09-17 69° 88° 8896 6754 4822 3466 2700
09-18 66° 91° 8952 6800 4858 3494 2723
09-19 70° 89° 9010 6848 4896 3524 2748
09-20 70° 91° 9068 6896 4934 3554 2773
09-21 67° 83° 9121 6940 4968 3579 2794
09-22 55° 65° 9160 6968 4986 3590 2799
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-23 52° 77° 9202 7000 5008 3604 2808
09-24 60° 70° 9245 7034 5032 3619 2819
09-25 70° 76° 9296 7075 5063 3642 2837
09-26 60° 67° 9338 7106 5084 3656 2845
09-27 50° 68° 9375 7133 5101 3665 2849
09-28 50° 72° 9413 7162 5120 3675 2855
09-29 49° 66° 9449 7187 5135 3683 2857
09-30 49° 70° 9486 7215 5153 3693 2862
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
02-19 46° 63° 147 87 41 14 0
02-20 39° 65° 177 107 51 16 0
02-21 51° 64° 213 133 67 24 3
02-22 53° 65° 250 160 84 33 8
02-23 53° 68° 288 188 102 43 13
02-24 48° 73° 327 217 121 54 19
02-25 27° 46° 341 221 121 54 19
02-26 22° 46° 353 223 121 54 19
02-27 40° 51° 377 237 124 54 19
02-28 45° 62° 408 258 136 58 19
03-01 38° 62° 436 276 144 58 19
03-02 31° 40° 450 280 144 58 19
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-03 26° 35° 458 280 144 58 19
03-04 29° 44° 473 284 144 58 19
03-05 32° 66° 499 301 151 58 19
03-06 50° 59° 532 324 164 63 19
03-07 42° 62° 562 344 173 64 19
03-08 39° 58° 589 361 180 64 19
03-09 35° 62° 615 377 187 64 19
03-10 29° 40° 628 380 187 64 19
03-11 24° 29° 633 380 187 64 19
03-12 19° 35° 638 380 187 64 19
03-13 29° 32° 646 380 187 64 19
03-14 20° 29° 648 380 187 64 19
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-15 20° 32° 652 380 187 64 19
03-16 18° 42° 660 380 187 64 19
03-17 31° 45° 677 386 187 64 19
03-18 37° 46° 696 396 187 64 19
03-19 32° 50° 715 405 187 64 19
03-20 39° 50° 738 417 189 64 19
03-21 41° 58° 766 435 197 64 19
03-22 27° 40° 777 437 197 64 19
03-23 27° 56° 797 446 197 64 19
03-24 52° 75° 838 478 218 78 27
03-25 60° 75° 884 513 244 95 40
03-26 54° 61° 920 539 260 103 43
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-27 48° 63° 953 563 273 109 43
03-28 51° 57° 985 584 285 112 43
03-29 47° 59° 1016 605 296 115 43
03-30 52° 69° 1054 633 314 126 48
03-31 40° 59° 1081 651 321 126 48
04-01 39° 55° 1107 666 327 126 48
04-02 39° 63° 1136 685 336 127 48
04-03 52° 69° 1175 714 355 137 54
04-04 50° 60° 1208 737 368 143 54
04-05 46° 60° 1239 758 379 146 54
04-06 36° 47° 1258 768 379 146 54
04-07 34° 55° 1281 780 381 146 54
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-08 32° 65° 1308 797 388 146 54
04-09 49° 77° 1349 828 409 159 63
04-10 61° 74° 1395 864 435 177 75
04-11 53° 66° 1432 892 453 186 80
04-12 41° 68° 1464 914 465 190 80
04-13 46° 78° 1504 943 484 202 87
04-14 51° 82° 1549 978 509 219 98
04-15 62° 82° 1598 1018 539 240 115
04-16 63° 74° 1645 1055 566 259 129
04-17 53° 69° 1684 1084 585 270 135
04-18 47° 78° 1725 1114 605 283 142
04-19 61° 82° 1774 1154 635 304 159
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-20 65° 81° 1825 1195 666 327 177
04-21 47° 61° 1857 1217 678 331 177
04-22 44° 57° 1886 1235 686 332 177
04-23 40° 71° 1920 1259 700 338 177
04-24 46° 77° 1959 1288 719 349 184
04-25 54° 76° 2002 1321 742 364 194
04-26 61° 85° 2053 1362 773 387 212
04-27 51° 72° 2092 1392 793 398 218
04-28 45° 63° 2124 1414 805 402 218
04-29 57° 75° 2168 1448 829 418 229
04-30 56° 69° 2209 1478 849 431 237
05-01 50° 69° 2246 1505 866 440 241
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-02 46° 61° 2277 1527 878 443 241
05-03 40° 54° 2302 1541 882 443 241
05-04 46° 49° 2328 1557 888 443 241
05-05 44° 55° 2356 1575 896 443 241
05-06 42° 60° 2385 1594 905 444 241
05-07 39° 60° 2412 1612 913 444 241
05-08 34° 64° 2440 1629 920 444 241
05-09 49° 65° 2475 1654 935 451 243
05-10 53° 79° 2519 1688 959 468 254
05-11 57° 70° 2561 1720 981 481 263
05-12 52° 68° 2599 1748 999 491 268
05-13 48° 75° 2638 1777 1018 503 274
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-14 58° 83° 2686 1815 1046 523 289
05-15 58° 84° 2736 1855 1076 544 306
05-16 61° 76° 2782 1892 1103 563 320
05-17 69° 84° 2837 1936 1137 589 341
05-18 73° 87° 2895 1984 1175 619 366
05-19 62° 77° 2942 2022 1203 639 381
05-20 54° 78° 2986 2056 1227 655 392
05-21 60° 74° 3032 2091 1252 672 404
05-22 48° 72° 3070 2119 1270 682 409
05-23 56° 75° 3113 2153 1294 698 420
05-24 59° 65° 3153 2182 1313 710 426
05-25 56° 63° 3191 2210 1331 719 431
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-26 51° 78° 3233 2243 1354 734 441
05-27 68° 80° 3285 2285 1386 758 459
05-28 63° 76° 3333 2322 1413 777 474
05-29 58° 83° 3381 2361 1442 798 489
05-30 57° 77° 3427 2396 1467 815 502
05-31 56° 78° 3472 2431 1492 832 514
06-01 55° 79° 3517 2466 1517 850 526
06-02 55° 84° 3565 2504 1545 869 541
06-03 57° 87° 3615 2544 1575 891 558
06-04 65° 89° 3670 2589 1610 918 580
06-05 70° 88° 3727 2636 1647 947 604
06-06 58° 78° 3773 2672 1673 965 617
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-07 57° 71° 3814 2704 1695 979 626
06-08 51° 77° 3857 2736 1717 993 635
06-09 57° 84° 3906 2775 1746 1014 651
06-10 62° 87° 3958 2817 1778 1038 670
06-11 66° 89° 4013 2863 1814 1066 692
06-12 69° 91° 4071 2911 1852 1096 718
06-13 72° 82° 4127 2956 1887 1123 740
06-14 69° 84° 4181 3000 1921 1150 761
06-15 67° 80° 4233 3042 1953 1173 780
06-16 66° 86° 4287 3087 1988 1200 801
06-17 71° 86° 4344 3133 2024 1228 825
06-18 69° 79° 4396 3175 2056 1253 844
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-19 62° 80° 4445 3214 2085 1274 860
06-20 59° 79° 4492 3252 2113 1293 875
06-21 66° 89° 4548 3297 2148 1320 897
06-22 72° 82° 4602 3342 2183 1347 919
06-23 65° 76° 4651 3380 2211 1367 934
06-24 61° 75° 4697 3417 2238 1386 947
06-25 56° 74° 4741 3450 2261 1401 958
06-26 54° 73° 4782 3481 2282 1414 966
06-27 51° 74° 4822 3511 2302 1427 973
06-28 54° 81° 4868 3547 2328 1444 986
06-29 69° 88° 4924 3594 2365 1473 1010
06-30 69° 81° 4977 3636 2397 1498 1029
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-01 68° 82° 5030 3679 2430 1523 1049
07-02 64° 85° 5083 3722 2463 1547 1069
07-03 66° 88° 5137 3767 2498 1574 1091
07-04 68° 87° 5193 3812 2533 1601 1113
07-05 68° 85° 5247 3856 2567 1628 1134
07-06 71° 81° 5301 3901 2602 1654 1155
07-07 66° 86° 5355 3945 2636 1680 1176
07-08 63° 78° 5404 3983 2664 1700 1192
07-09 58° 82° 5452 4021 2692 1720 1207
07-10 71° 83° 5507 4066 2727 1748 1229
07-11 68° 79° 5559 4108 2759 1771 1248
07-12 72° 88° 5616 4156 2797 1801 1273
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-13 74° 84° 5673 4203 2834 1830 1297
07-14 70° 82° 5727 4247 2868 1856 1317
07-15 60° 80° 5775 4284 2895 1876 1332
07-16 63° 86° 5828 4327 2928 1900 1352
07-17 68° 84° 5882 4371 2962 1926 1373
07-18 70° 87° 5939 4418 2999 1955 1397
07-19 68° 87° 5994 4464 3035 1983 1420
07-20 74° 88° 6053 4513 3074 2014 1446
07-21 72° 87° 6111 4560 3111 2044 1470
07-22 73° 88° 6169 4609 3150 2074 1496
07-23 71° 81° 6224 4653 3184 2100 1517
07-24 67° 80° 6276 4695 3216 2124 1536
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-25 60° 80° 6324 4733 3244 2144 1551
07-26 61° 84° 6375 4774 3275 2167 1569
07-27 73° 79° 6429 4818 3309 2193 1590
07-28 70° 80° 6482 4861 3342 2218 1610
07-29 59° 78° 6528 4897 3368 2237 1623
07-30 57° 83° 6576 4935 3396 2257 1638
07-31 62° 85° 6627 4977 3428 2280 1656
08-01 66° 84° 6680 5019 3460 2305 1676
08-02 65° 83° 6732 5062 3493 2329 1695
08-03 66° 84° 6785 5105 3526 2354 1715
08-04 59° 74° 6830 5139 3550 2371 1727
08-05 54° 76° 6873 5172 3573 2386 1737
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-06 62° 72° 6918 5207 3598 2403 1749
08-07 64° 78° 6967 5246 3627 2424 1765
08-08 56° 80° 7013 5283 3654 2442 1779
08-09 56° 81° 7060 5319 3680 2461 1792
08-10 61° 84° 7110 5360 3711 2483 1810
08-11 68° 82° 7163 5403 3744 2508 1830
08-12 61° 79° 7212 5441 3772 2528 1845
08-13 56° 81° 7258 5478 3799 2547 1859
08-14 62° 84° 7309 5519 3830 2570 1876
08-15 65° 87° 7363 5562 3863 2596 1897
08-16 67° 88° 7419 5608 3899 2623 1920
08-17 74° 85° 7476 5655 3936 2653 1944
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-18 67° 84° 7529 5699 3970 2678 1965
08-19 68° 86° 7584 5744 4005 2705 1987
08-20 65° 89° 7640 5789 4040 2732 2009
08-21 70° 88° 7697 5836 4077 2761 2033
08-22 68° 80° 7749 5878 4109 2785 2052
08-23 59° 77° 7794 5914 4135 2803 2065
08-24 54° 77° 7838 5947 4158 2819 2075
08-25 57° 75° 7882 5981 4182 2835 2086
08-26 53° 78° 7925 6015 4206 2850 2097
08-27 56° 80° 7971 6051 4232 2868 2109
08-28 62° 80° 8021 6090 4261 2889 2126
08-29 62° 78° 8069 6128 4289 2909 2141
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-30 62° 80° 8117 6167 4318 2930 2157
08-31 60° 79° 8165 6204 4345 2949 2171
09-01 58° 65° 8204 6233 4364 2961 2177
09-02 56° 74° 8247 6266 4387 2976 2187
09-03 58° 82° 8295 6304 4415 2996 2202
09-04 58° 88° 8346 6345 4446 3018 2220
09-05 58° 72° 8389 6378 4469 3033 2230
09-06 48° 65° 8423 6403 4484 3040 2232
09-07 47° 66° 8458 6427 4498 3047 2233
09-08 48° 77° 8499 6458 4519 3059 2241
09-09 56° 73° 8541 6491 4542 3074 2250
09-10 47° 73° 8579 6518 4559 3084 2255
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-11 47° 73° 8617 6547 4578 3094 2260
09-12 56° 72° 8659 6578 4599 3108 2269
09-13 61° 66° 8701 6610 4621 3121 2278
09-14 61° 74° 8746 6646 4647 3139 2290
09-15 55° 82° 8792 6682 4673 3157 2304
09-16 62° 84° 8844 6723 4704 3180 2322
09-17 64° 87° 8897 6766 4737 3206 2342
09-18 69° 82° 8950 6810 4771 3231 2363
09-19 68° 80° 9002 6852 4803 3255 2382
09-20 66° 87° 9057 6896 4837 3281 2403
09-21 70° 91° 9115 6944 4875 3311 2428
09-22 68° 90° 9172 6992 4913 3341 2452
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-23 66° 91° 9229 7038 4949 3369 2476
09-24 63° 91° 9283 7083 4984 3396 2497
09-25 59° 90° 9336 7125 5016 3420 2517
09-26 65° 90° 9391 7170 5051 3448 2539
09-27 64° 80° 9441 7210 5081 3469 2556
09-28 52° 73° 9481 7241 5102 3482 2563
09-29 47° 76° 9521 7270 5121 3493 2570
09-30 47° 71° 9558 7297 5138 3502 2574

 

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.