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Crabgrass/Annual Bluegrass Preemergence Timer (GDD 32)
through Wed, May. 23. 2018

 

GDD Total: 1554 (Base 32) through Wed, May. 23, 2018

  

Lafayette, IN

       

Forecast »

Done

801

Late

500

Optimum

250

Early

171

Under

0

 

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 38° 62° 94 46 19 3 0
02-20 50° 66° 130 73 36 12 3
02-21 33° 46° 147 80 36 12 3
02-22 33° 45° 164 87 36 12 3
02-23 38° 49° 186 99 37 12 3
02-24 36° 52° 208 111 39 12 3
02-25 34° 54° 230 123 41 12 3
02-26 29° 53° 249 132 41 12 3
02-27 34° 62° 275 148 47 12 3
02-28 48° 61° 307 170 59 16 3
03-01 32° 52° 327 180 59 16 3
03-02 32° 46° 344 187 59 16 3
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-03 28° 47° 360 193 59 16 3
03-04 29° 47° 376 199 59 16 3
03-05 31° 43° 391 204 59 16 3
03-06 32° 46° 408 211 59 16 3
03-07 29° 34° 417 211 59 16 3
03-08 25° 31° 423 211 59 16 3
03-09 21° 39° 431 211 59 16 3
03-10 25° 42° 442 212 59 16 3
03-11 29° 41° 455 215 59 16 3
03-12 26° 42° 467 217 59 16 3
03-13 28° 37° 477 217 59 16 3
03-14 22° 44° 488 218 59 16 3
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-15 31° 53° 507 227 59 16 3
03-16 23° 41° 518 228 59 16 3
03-17 32° 37° 530 230 59 16 3
03-18 23° 53° 546 237 59 16 3
03-19 35° 53° 569 249 62 16 3
03-20 27° 45° 583 253 62 16 3
03-21 28° 45° 597 257 62 16 3
03-22 22° 48° 610 260 62 16 3
03-23 27° 48° 626 266 62 16 3
03-24 32° 37° 638 268 62 16 3
03-25 26° 48° 653 273 62 16 3
03-26 27° 54° 671 281 62 16 3
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-27 45° 56° 700 300 70 17 3
03-28 41° 51° 724 314 74 17 3
03-29 40° 50° 747 327 77 17 3
03-30 34° 49° 766 336 77 17 3
03-31 34° 54° 788 348 80 17 3
04-01 28° 40° 800 351 80 17 3
04-02 22° 43° 811 351 80 17 3
04-03 40° 64° 841 371 90 19 3
04-04 30° 39° 854 374 90 19 3
04-05 28° 43° 867 377 90 19 3
04-06 29° 43° 881 382 90 19 3
04-07 25° 38° 891 382 90 19 3
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-08 22° 40° 900 382 90 19 3
04-09 31° 39° 913 385 90 19 3
04-10 30° 42° 927 389 90 19 3
04-11 34° 64° 954 406 97 19 3
04-12 54° 77° 998 440 121 35 14
04-13 58° 73° 1041 473 144 50 25
04-14 43° 66° 1074 495 156 54 25
04-15 36° 47° 1094 505 156 54 25
04-16 29° 35° 1104 505 156 54 25
04-17 29° 42° 1117 509 156 54 25
04-18 32° 47° 1134 516 156 54 25
04-19 33° 55° 1156 528 158 54 25
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-20 26° 60° 1178 539 159 54 25
04-21 37° 59° 1204 555 165 54 25
04-22 44° 67° 1237 579 179 60 25
04-23 44° 65° 1270 601 192 64 25
04-24 51° 59° 1302 624 204 69 25
04-25 43° 62° 1333 645 215 72 25
04-26 31° 65° 1360 661 222 72 25
04-27 41° 65° 1391 682 233 75 25
04-28 36° 54° 1414 696 236 75 25
04-29 29° 61° 1437 709 239 75 25
04-30 33° 75° 1469 731 251 79 25
05-01 48° 83° 1513 764 275 95 36
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-02 63° 84° 1564 806 306 119 55
05-03 65° 74° 1612 844 334 138 69
05-04 61° 73° 1657 878 359 155 81
05-05 50° 79° 1700 911 381 170 91
05-06 50° 79° 1742 944 404 184 100
05-07 47° 74° 1781 972 422 195 106
05-08 49° 80° 1823 1005 445 209 115
05-09 52° 83° 1869 1040 471 227 128
05-10 56° 81° 1915 1077 497 245 141
05-11 59° 80° 1963 1114 524 265 156
05-12 55° 71° 2003 1145 545 278 164
05-13 54° 81° 2049 1180 571 295 176
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-14 62° 91° 2103 1225 605 321 197
05-15 62° 75° 2149 1261 631 340 211
05-16 60° 80° 2198 1299 659 360 226
05-17 56° 82° 2245 1336 687 379 240
05-18 61° 71° 2289 1371 711 395 251
05-19 59° 81° 2337 1408 739 415 266
05-20 60° 72° 2381 1442 763 431 277
05-21 60° 77° 2428 1479 789 450 291
05-22 64° 80° 2477 1519 819 472 308
05-23 53° 80° 2522 1554 844 489 320
05-24 56° 83° 2570 1592 872 508 334
05-25 57° 86° 2620 1631 902 530 351
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-26 66° 87° 2674 1676 936 556 372
05-27 66° 88° 2729 1721 971 583 395
05-28 67° 88° 2785 1767 1007 611 417
05-29 64° 86° 2838 1810 1040 636 437
05-30 65° 86° 2891 1853 1073 662 458
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
02-19 44° 64° 136 78 34 10 0
02-20 39° 67° 167 99 45 13 0
02-21 52° 61° 202 124 60 20 2
02-22 49° 65° 237 149 75 27 4
02-23 46° 61° 268 170 86 30 4
02-24 44° 67° 302 194 100 36 4
02-25 26° 43° 315 197 100 36 4
02-26 20° 47° 326 198 100 36 4
02-27 31° 55° 347 209 101 36 4
02-28 44° 63° 379 231 112 39 4
03-01 36° 62° 406 248 119 39 4
03-02 29° 36° 416 248 119 39 4
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-03 25° 34° 424 248 119 39 4
03-04 29° 45° 439 253 119 39 4
03-05 32° 64° 465 269 125 39 4
03-06 53° 60° 499 294 139 46 5
03-07 39° 63° 528 313 148 46 5
03-08 37° 56° 552 327 153 46 5
03-09 29° 53° 571 336 153 46 5
03-10 25° 37° 580 336 153 46 5
03-11 23° 27° 583 336 153 46 5
03-12 20° 35° 589 336 153 46 5
03-13 27° 32° 596 336 153 46 5
03-14 16° 28° 596 336 153 46 5
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-15 15° 31° 597 336 153 46 5
03-16 17° 42° 605 336 153 46 5
03-17 32° 46° 622 343 153 46 5
03-18 37° 43° 640 351 153 46 5
03-19 31° 51° 659 360 153 46 5
03-20 41° 52° 683 375 157 46 5
03-21 35° 54° 706 387 160 46 5
03-22 25° 39° 716 387 160 46 5
03-23 29° 54° 735 396 160 46 5
03-24 48° 75° 775 426 179 58 12
03-25 56° 72° 817 458 201 72 21
03-26 54° 62° 853 484 217 80 24
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-27 49° 62° 887 508 231 86 25
03-28 41° 52° 911 523 236 86 25
03-29 45° 56° 940 541 245 86 25
03-30 45° 59° 970 561 254 88 25
03-31 39° 54° 994 575 258 88 25
04-01 38° 57° 1019 590 264 88 25
04-02 41° 62° 1049 610 273 90 25
04-03 50° 65° 1085 636 289 98 28
04-04 46° 56° 1114 655 298 99 28
04-05 43° 53° 1140 671 304 99 28
04-06 36° 49° 1160 681 304 99 28
04-07 35° 53° 1181 693 306 99 28
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-08 33° 65° 1209 710 313 99 28
04-09 52° 76° 1251 742 336 113 37
04-10 61° 70° 1295 776 360 129 48
04-11 47° 62° 1328 799 373 134 48
04-12 37° 66° 1358 819 382 135 48
04-13 47° 74° 1396 847 400 146 53
04-14 46° 79° 1436 877 421 158 61
04-15 57° 81° 1483 915 448 177 75
04-16 58° 70° 1525 947 470 191 84
04-17 51° 72° 1565 976 489 202 90
04-18 46° 78° 1605 1006 509 214 97
04-19 60° 78° 1652 1043 536 234 111
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-20 56° 76° 1696 1077 560 250 122
04-21 45° 55° 1724 1095 568 250 122
04-22 42° 61° 1753 1114 578 251 122
04-23 38° 70° 1785 1136 590 255 122
04-24 42° 75° 1822 1163 607 264 126
04-25 51° 78° 1864 1196 629 278 136
04-26 62° 83° 1915 1236 660 301 153
04-27 49° 62° 1948 1260 673 306 153
04-28 45° 58° 1978 1279 682 308 153
04-29 50° 57° 2009 1301 694 311 153
04-30 49° 69° 2046 1328 711 320 157
05-01 48° 67° 2082 1353 726 328 160
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-02 43° 54° 2108 1369 733 328 160
05-03 36° 55° 2132 1383 736 328 160
05-04 44° 49° 2156 1397 741 328 160
05-05 42° 55° 2183 1414 747 328 160
05-06 42° 57° 2210 1431 755 328 160
05-07 37° 62° 2238 1449 762 328 160
05-08 33° 63° 2264 1465 768 328 160
05-09 45° 59° 2294 1485 778 330 160
05-10 51° 76° 2335 1516 800 343 168
05-11 50° 67° 2371 1543 816 351 171
05-12 49° 71° 2409 1571 834 361 176
05-13 46° 78° 2450 1601 854 374 184
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-14 56° 85° 2498 1639 883 394 199
05-15 56° 85° 2547 1678 911 415 215
05-16 64° 76° 2595 1716 939 435 230
05-17 68° 84° 2649 1760 973 461 251
05-18 70° 89° 2706 1808 1011 490 275
05-19 50° 68° 2744 1835 1028 500 280
05-20 51° 75° 2785 1866 1049 513 288
05-21 53° 68° 2823 1895 1068 523 294
05-22 47° 72° 2861 1922 1086 533 298
05-23 57° 71° 2903 1955 1108 547 307
05-24 56° 64° 2941 1982 1126 557 312
05-25 54° 63° 2978 2009 1142 566 316
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-26 52° 77° 3020 2041 1165 580 325
05-27 62° 73° 3065 2076 1190 597 337
05-28 60° 77° 3112 2113 1217 616 351
05-29 58° 80° 3159 2150 1244 635 365
05-30 54° 74° 3201 2182 1266 649 374
05-31 53° 78° 3244 2216 1289 664 384
06-01 52° 81° 3289 2250 1313 681 396
06-02 52° 84° 3335 2286 1340 699 409
06-03 58° 89° 3387 2328 1371 723 428
06-04 71° 88° 3444 2375 1409 752 452
06-05 65° 86° 3498 2419 1442 778 473
06-06 53° 77° 3541 2452 1466 793 483
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-07 55° 75° 3584 2485 1488 808 493
06-08 50° 79° 3626 2517 1511 822 502
06-09 61° 88° 3678 2560 1543 846 522
06-10 65° 85° 3731 2603 1576 871 542
06-11 67° 88° 3787 2648 1612 899 564
06-12 70° 92° 3846 2697 1651 930 590
06-13 71° 90° 3904 2746 1689 960 616
06-14 67° 86° 3959 2791 1724 987 637
06-15 67° 85° 4013 2835 1758 1013 659
06-16 66° 86° 4067 2879 1792 1039 679
06-17 71° 83° 4122 2924 1827 1066 701
06-18 67° 80° 4174 2965 1858 1090 720
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-19 61° 79° 4222 3003 1886 1110 735
06-20 57° 77° 4267 3038 1911 1127 747
06-21 62° 84° 4318 3079 1942 1150 765
06-22 73° 82° 4373 3124 1977 1177 787
06-23 66° 76° 4422 3163 2007 1198 803
06-24 59° 74° 4467 3198 2032 1215 815
06-25 55° 73° 4509 3230 2053 1229 824
06-26 52° 71° 4549 3260 2073 1241 831
06-27 50° 74° 4588 3290 2093 1252 837
06-28 54° 80° 4634 3325 2118 1270 850
06-29 71° 84° 4689 3370 2154 1297 872
06-30 69° 81° 4742 3414 2187 1322 892
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-01 67° 82° 4795 3456 2219 1347 912
07-02 62° 84° 4845 3497 2250 1369 929
07-03 70° 87° 4902 3543 2286 1398 953
07-04 68° 85° 4956 3587 2321 1424 974
07-05 65° 85° 5009 3630 2354 1449 994
07-06 69° 86° 5065 3676 2390 1477 1017
07-07 69° 86° 5121 3722 2425 1505 1040
07-08 62° 77° 5168 3760 2453 1524 1054
07-09 57° 83° 5217 3798 2481 1545 1070
07-10 72° 81° 5271 3842 2516 1571 1091
07-11 69° 78° 5323 3884 2548 1595 1110
07-12 71° 84° 5379 3930 2584 1623 1133
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-13 73° 85° 5436 3977 2621 1652 1157
07-14 67° 79° 5487 4018 2652 1675 1175
07-15 58° 78° 5534 4055 2678 1694 1189
07-16 63° 83° 5585 4096 2709 1717 1207
07-17 61° 83° 5635 4136 2739 1739 1224
07-18 62° 85° 5686 4178 2771 1762 1242
07-19 65° 87° 5741 4222 2805 1789 1264
07-20 70° 87° 5797 4268 2841 1817 1287
07-21 71° 86° 5853 4315 2878 1845 1311
07-22 71° 83° 5909 4360 2913 1873 1333
07-23 72° 85° 5965 4407 2950 1901 1357
07-24 66° 78° 6015 4446 2980 1923 1373
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-25 59° 79° 6062 4483 3007 1942 1387
07-26 61° 83° 6112 4523 3036 1964 1404
07-27 71° 81° 6166 4567 3070 1990 1425
07-28 67° 80° 6217 4608 3102 2013 1443
07-29 55° 77° 6261 4642 3126 2029 1454
07-30 57° 81° 6308 4679 3153 2048 1468
07-31 61° 83° 6357 4719 3182 2069 1485
08-01 65° 85° 6411 4762 3215 2095 1505
08-02 62° 82° 6461 4802 3245 2117 1522
08-03 64° 85° 6513 4844 3278 2141 1541
08-04 56° 71° 6555 4876 3300 2155 1550
08-05 53° 76° 6598 4909 3322 2170 1560
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-06 59° 69° 6640 4941 3344 2184 1569
08-07 64° 75° 6687 4978 3372 2203 1583
08-08 53° 78° 6731 5012 3395 2219 1594
08-09 56° 80° 6777 5048 3421 2237 1607
08-10 57° 84° 6825 5086 3450 2257 1622
08-11 65° 81° 6876 5127 3481 2280 1640
08-12 58° 76° 6921 5162 3505 2297 1652
08-13 52° 78° 6964 5195 3529 2312 1662
08-14 59° 83° 7013 5234 3557 2333 1678
08-15 64° 85° 7066 5277 3590 2358 1698
08-16 65° 87° 7119 5321 3624 2383 1719
08-17 72° 83° 7175 5366 3660 2411 1741
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-18 64° 81° 7226 5407 3690 2434 1759
08-19 63° 82° 7276 5448 3721 2456 1776
08-20 62° 86° 7329 5490 3753 2481 1796
08-21 69° 84° 7383 5534 3788 2507 1817
08-22 65° 78° 7433 5574 3817 2529 1834
08-23 56° 75° 7476 5607 3841 2544 1844
08-24 54° 75° 7518 5640 3863 2558 1853
08-25 51° 72° 7558 5669 3883 2570 1860
08-26 52° 76° 7600 5701 3904 2584 1869
08-27 55° 78° 7645 5736 3929 2601 1881
08-28 61° 79° 7693 5774 3957 2621 1896
08-29 62° 78° 7741 5812 3986 2641 1911
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-30 58° 77° 7787 5848 4011 2659 1924
08-31 58° 75° 7831 5882 4036 2675 1935
09-01 54° 66° 7869 5911 4054 2685 1940
09-02 48° 72° 7907 5939 4072 2695 1946
09-03 55° 80° 7953 5974 4098 2713 1958
09-04 56° 88° 8003 6014 4128 2735 1975
09-05 56° 68° 8043 6044 4148 2747 1982
09-06 47° 64° 8077 6068 4161 2753 1983
09-07 47° 66° 8111 6092 4176 2759 1984
09-08 47° 77° 8151 6122 4196 2771 1991
09-09 54° 72° 8192 6153 4217 2784 1999
09-10 46° 72° 8229 6180 4233 2793 2003
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-11 47° 72° 8266 6208 4251 2802 2008
09-12 53° 79° 8310 6242 4275 2818 2018
09-13 62° 67° 8353 6274 4297 2833 2028
09-14 57° 76° 8398 6309 4322 2850 2040
09-15 55° 84° 8445 6346 4350 2869 2054
09-16 59° 86° 8495 6387 4380 2891 2071
09-17 63° 89° 8549 6431 4414 2917 2092
09-18 65° 80° 8600 6471 4445 2940 2110
09-19 65° 79° 8650 6511 4475 2962 2127
09-20 61° 91° 8704 6555 4509 2988 2148
09-21 68° 91° 8762 6603 4546 3018 2173
09-22 66° 92° 8819 6650 4583 3047 2197
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-23 65° 91° 8875 6696 4620 3075 2220
09-24 63° 91° 8930 6741 4655 3102 2242
09-25 60° 89° 8982 6784 4687 3126 2262
09-26 65° 90° 9038 6829 4723 3154 2284
09-27 60° 75° 9084 6865 4748 3172 2297
09-28 52° 72° 9124 6895 4768 3184 2304
09-29 47° 75° 9163 6924 4787 3195 2310
09-30 47° 70° 9199 6950 4803 3203 2313

 

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.