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Crabgrass/Annual Bluegrass Preemergence Timer (GDD 32)
through Fri, Jun. 23. 2017

 

GDD Total: 0 (Base 32) through Fri, Jun. 23, 2017

  

Ann Arbor, MI

       

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 2016 & 2017

2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
02-19 39° 64° 101 50 18 2 0
02-20 34° 53° 122 62 20 2 0
02-21 36° 58° 147 77 25 2 0
02-22 41° 61° 176 96 34 3 0
02-23 43° 65° 208 117 46 7 0
02-24 39° 66° 238 138 56 9 0
02-25 24° 51° 254 143 56 9 0
02-26 25° 40° 264 144 56 9 0
02-27 31° 50° 282 152 56 9 0
02-28 36° 57° 307 167 61 9 0
02-29 n/a n/a n/a n/a n/a n/a n/a
03-01 27° 57° 327 177 61 9 0
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-02 25° 31° 333 177 61 9 0
03-03 19° 27° 334 177 61 9 0
03-04 16° 31° 336 177 61 9 0
03-05 23° 38° 344 177 61 9 0
03-06 36° 56° 368 191 65 9 0
03-07 38° 57° 394 207 71 9 0
03-08 38° 52° 417 220 73 9 0
03-09 31° 41° 431 224 73 9 0
03-10 18° 34° 435 224 73 9 0
03-11 15° 24° 435 224 73 9 0
03-12 15° 30° 436 224 73 9 0
03-13 19° 24° 436 224 73 9 0
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-14 13° 22° 436 224 73 9 0
03-15 14° 29° 436 224 73 9 0
03-16 17° 39° 442 224 73 9 0
03-17 24° 36° 450 224 73 9 0
03-18 32° 38° 463 227 73 9 0
03-19 34° 41° 479 233 73 9 0
03-20 34° 45° 496 240 73 9 0
03-21 30° 55° 516 251 74 9 0
03-22 19° 35° 522 251 74 9 0
03-23 21° 42° 531 251 74 9 0
03-24 35° 74° 564 273 86 14 0
03-25 40° 52° 588 287 91 14 0
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-26 39° 50° 610 300 93 14 0
03-27 49° 59° 642 321 105 18 0
03-28 40° 52° 666 336 109 18 0
03-29 31° 55° 688 347 110 18 0
03-30 37° 42° 705 354 110 18 0
03-31 36° 42° 722 361 110 18 0
04-01 36° 55° 745 374 114 18 0
04-02 32° 59° 769 388 117 18 0
04-03 45° 51° 795 404 123 18 0
04-04 46° 56° 824 423 132 18 0
04-05 38° 47° 844 433 132 18 0
04-06 34° 43° 861 440 132 18 0
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-07 34° 51° 881 450 133 18 0
04-08 31° 60° 905 464 136 18 0
04-09 45° 75° 943 492 154 28 5
04-10 59° 75° 987 527 179 45 17
04-11 45° 60° 1018 547 190 48 17
04-12 43° 59° 1047 566 199 49 17
04-13 43° 53° 1073 582 205 49 17
04-14 44° 63° 1104 604 216 52 17
04-15 48° 82° 1147 637 239 67 27
04-16 58° 72° 1191 670 262 83 37
04-17 44° 68° 1225 694 277 89 39
04-18 37° 66° 1255 714 287 91 39
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-19 50° 74° 1295 744 307 103 46
04-20 48° 62° 1327 767 319 107 46
04-21 45° 55° 1355 784 327 107 46
04-22 37° 61° 1382 801 334 107 46
04-23 34° 68° 1411 820 343 108 46
04-24 40° 69° 1444 843 356 113 46
04-25 49° 69° 1481 870 373 122 50
04-26 55° 83° 1528 907 400 141 64
04-27 50° 70° 1566 935 418 151 69
04-28 43° 63° 1597 956 429 154 69
04-29 46° 54° 1625 974 437 154 69
04-30 40° 56° 1651 990 443 154 69
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-01 49° 65° 1686 1015 458 162 71
05-02 43° 49° 1710 1029 462 162 71
05-03 38° 60° 1737 1046 469 162 71
05-04 43° 48° 1761 1060 473 162 71
05-05 42° 48° 1784 1073 476 162 71
05-06 40° 58° 1811 1090 483 162 71
05-07 36° 54° 1834 1104 486 162 71
05-08 32° 57° 1857 1116 489 162 71
05-09 33° 62° 1882 1132 494 162 71
05-10 43° 65° 1914 1153 506 166 71
05-11 46° 65° 1947 1177 519 171 71
05-12 42° 67° 1980 1199 532 175 71
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-13 44° 71° 2015 1225 547 183 74
05-14 51° 67° 2053 1252 565 192 78
05-15 41° 70° 2086 1275 578 197 78
05-16 53° 74° 2127 1307 599 211 87
05-17 67° 85° 2181 1350 633 236 108
05-18 68° 86° 2236 1395 668 263 129
05-19 47° 63° 2269 1418 681 268 129
05-20 47° 64° 2302 1442 694 274 130
05-21 52° 74° 2344 1473 716 287 138
05-22 50° 68° 2381 1500 733 296 143
05-23 56° 72° 2423 1532 755 310 151
05-24 56° 64° 2461 1560 773 320 156
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-25 58° 61° 2498 1587 790 329 161
05-26 55° 69° 2538 1617 810 341 168
05-27 57° 73° 2581 1650 833 356 178
05-28 58° 76° 2626 1685 858 373 189
05-29 55° 78° 2670 1719 882 389 201
05-30 52° 70° 2709 1748 901 400 207
05-31 52° 72° 2749 1778 921 412 213
06-01 52° 73° 2789 1808 941 425 221
06-02 52° 79° 2833 1842 965 440 231
06-03 52° 77° 2875 1874 987 455 241
06-04 64° 86° 2928 1918 1020 480 261
06-05 60° 69° 2971 1950 1043 494 271
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-06 52° 67° 3009 1978 1061 504 275
06-07 52° 74° 3049 2009 1081 517 283
06-08 48° 76° 3090 2039 1102 529 290
06-09 54° 80° 3134 2074 1126 546 302
06-10 59° 86° 3185 2114 1157 568 320
06-11 68° 89° 3241 2160 1193 597 343
06-12 67° 91° 3298 2207 1230 625 367
06-13 71° 89° 3357 2256 1268 656 392
06-14 67° 81° 3409 2298 1301 680 412
06-15 68° 85° 3463 2342 1335 706 433
06-16 63° 85° 3515 2385 1367 731 452
06-17 65° 87° 3569 2429 1401 757 473
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-18 68° 84° 3623 2472 1435 783 494
06-19 59° 75° 3668 2507 1460 800 506
06-20 56° 73° 3711 2540 1483 814 515
06-21 54° 76° 3754 2573 1506 829 525
06-22 61° 85° 3805 2614 1537 852 543
06-23 65° 78° 0 0 0 0 0
06-24 58° 73° 3901 2690 1593 893 574
06-25 52° 72° 3941 2721 1613 905 581
06-26 53° 70° 3981 2750 1633 916 588
06-27 51° 74° 4021 2781 1653 929 595
06-28 54° 78° 4066 2815 1677 945 606
06-29 60° 80° 4114 2853 1705 965 621
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
2016Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
02-19 31° 61° 30 14 4 0 0
02-20 38° 61° 57 31 11 0 0
02-21 31° 44° 73 37 11 0 0
02-22 27° 39° 84 38 11 0 0
02-23 22° 43° 95 39 11 0 0
02-24 31° 33° 105 39 11 0 0
02-25 23° 33° 111 39 11 0 0
02-26 22° 31° 116 39 11 0 0
02-27 25° 42° 127 40 11 0 0
02-28 39° 65° 157 60 21 2 0
02-29 29° 50° 175 68 21 2 0
03-01 23° 30° 179 68 21 2 0
2016Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-02 16° 28° 179 68 21 2 0
03-03 10° 30° 179 68 21 2 0
03-04 23° 34° 186 68 21 2 0
03-05 27° 34° 194 68 21 2 0
03-06 25° 35° 202 68 21 2 0
03-07 35° 63° 229 85 29 2 0
03-08 50° 72° 268 114 48 13 6
03-09 57° 72° 310 146 70 27 15
03-10 46° 58° 340 166 80 29 15
03-11 35° 56° 364 180 83 29 15
03-12 28° 61° 386 192 86 29 15
03-13 44° 49° 411 207 90 29 15
2016Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-14 43° 61° 441 227 101 31 15
03-15 46° 54° 470 245 109 32 15
03-16 45° 60° 500 266 119 34 15
03-17 40° 55° 526 281 125 34 15
03-18 29° 51° 544 290 125 34 15
03-19 27° 40° 555 291 125 34 15
03-20 23° 46° 568 293 125 34 15
03-21 25° 46° 582 297 125 34 15
03-22 28° 62° 605 310 128 34 15
03-23 39° 53° 629 324 132 34 15
03-24 36° 59° 654 340 137 34 15
03-25 29° 43° 668 344 137 34 15
2016Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-26 27° 48° 683 349 137 34 15
03-27 26° 69° 709 365 143 34 15
03-28 39° 49° 731 377 145 34 15
03-29 31° 54° 751 387 145 34 15
03-30 32° 62° 776 402 150 34 15
03-31 54° 63° 813 428 166 43 19
04-01 41° 53° 837 443 171 43 19
04-02 28° 43° 851 447 171 43 19
04-03 21° 49° 864 449 171 43 19
04-04 28° 44° 878 454 171 43 19
04-05 18° 41° 886 454 171 43 19
04-06 31° 53° 906 464 171 43 19
2016Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-07 32° 46° 923 471 171 43 19
04-08 28° 42° 936 474 171 43 19
04-09 23° 33° 941 474 171 43 19
04-10 23° 35° 948 474 171 43 19
04-11 38° 60° 975 491 178 43 19
04-12 29° 49° 992 498 178 43 19
04-13 29° 51° 1011 506 178 43 19
04-14 31° 58° 1033 519 181 43 19
04-15 35° 70° 1063 539 191 45 19
04-16 44° 76° 1101 567 209 55 24
04-17 41° 79° 1139 594 227 64 28
04-18 41° 83° 1179 625 247 77 36
2016Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-19 50° 63° 1214 650 262 84 38
04-20 44° 68° 1248 673 276 90 39
04-21 50° 61° 1282 697 290 96 40
04-22 48° 59° 1314 719 302 100 40
04-23 37° 60° 1340 736 308 100 40
04-24 35° 67° 1369 755 317 101 40
04-25 45° 76° 1408 783 336 111 45
04-26 44° 56° 1436 801 344 111 45
04-27 41° 61° 1465 820 353 112 45
04-28 41° 49° 1488 834 356 112 45
04-29 45° 53° 1515 851 363 112 45
04-30 43° 58° 1544 869 371 112 45
2016Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-01 48° 54° 1573 888 380 113 45
05-02 46° 53° 1600 905 387 113 45
05-03 42° 64° 1631 926 399 116 45
05-04 47° 59° 1662 947 410 119 45
05-05 44° 66° 1695 971 423 125 45
05-06 44° 73° 1732 997 440 133 49
05-07 49° 76° 1773 1028 460 146 57
05-08 41° 69° 1806 1051 474 151 57
05-09 40° 65° 1836 1072 484 154 57
05-10 49° 53° 1865 1091 493 155 57
05-11 50° 67° 1902 1117 510 163 61
05-12 53° 74° 1944 1149 531 177 69
2016Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-13 52° 67° 1981 1177 549 187 74
05-14 41° 56° 2008 1193 556 187 74
05-15 37° 48° 2028 1204 556 187 74
05-16 37° 69° 2059 1225 567 190 74
05-17 53° 63° 2095 1250 583 197 77
05-18 42° 67° 2127 1273 595 202 77
05-19 41° 72° 2162 1297 610 208 78
05-20 42° 73° 2197 1322 625 216 81
05-21 56° 74° 2240 1355 648 230 90
05-22 51° 74° 2281 1386 669 243 98
05-23 38° 79° 2317 1412 685 251 101
05-24 45° 86° 2361 1446 709 267 112
2016Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-25 60° 86° 2412 1487 740 291 131
05-26 67° 88° 2468 1533 775 318 153
05-27 64° 87° 2521 1577 809 344 174
05-28 63° 88° 2575 1620 843 369 194
05-29 69° 88° 2631 1666 879 398 218
05-30 60° 87° 2683 1708 910 421 236
05-31 57° 85° 2732 1747 940 442 252
06-01 56° 85° 2780 1786 968 463 268
06-02 64° 84° 2832 1828 1000 487 287
06-03 54° 82° 2879 1864 1026 505 300
06-04 60° 82° 2928 1903 1056 526 316
06-05 61° 73° 2973 1938 1081 543 328
2016Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-06 58° 82° 3021 1976 1109 563 343
06-07 54° 66° 3059 2005 1127 574 349
06-08 48° 71° 3097 2032 1144 583 353
06-09 48° 74° 3136 2061 1163 594 359
06-10 60° 86° 3186 2102 1194 617 377
06-11 69° 95° 3247 2152 1234 649 404
06-12 62° 80° 3296 2191 1263 670 420
06-13 49° 75° 3336 2221 1284 683 428
06-14 62° 77° 3383 2259 1311 702 442
06-15 62° 83° 3434 2299 1342 725 460
06-16 65° 77° 3483 2338 1371 746 476
06-17 61° 88° 3535 2381 1403 770 495
2016Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-18 55° 90° 3586 2421 1433 792 512
06-19 59° 92° 3639 2465 1467 818 533
06-20 72° 93° 3700 2515 1508 850 560
06-21 59° 86° 3750 2556 1538 873 578
06-22 62° 86° 3802 2597 1570 897 597
06-23 66° 79° 3852 2638 1600 919 614
06-24 58° 85° 3902 2677 1630 940 630
06-25 55° 88° 3952 2717 1659 962 647
06-26 64° 90° 4007 2762 1694 989 669
06-27 68° 95° 4066 2811 1734 1020 695
06-28 60° 70° 4109 2845 1757 1036 706
06-29 50° 80° 4152 2878 1780 1051 716
2016Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-30 55° 84° 4200 2915 1808 1071 731
07-01 61° 77° 4247 2952 1834 1089 744
07-02 51° 78° 4289 2985 1857 1104 754
07-03 52° 81° 4334 3020 1882 1121 766
07-04 53° 80° 4379 3054 1906 1137 777
07-05 67° 88° 4434 3099 1942 1164 799
07-06 65° 89° 4489 3144 1977 1191 821
07-07 69° 94° 4548 3194 2016 1223 848
07-08 69° 90° 4606 3242 2054 1253 873
07-09 64° 78° 4655 3281 2083 1274 889
07-10 62° 84° 4706 3321 2114 1296 906
07-11 63° 89° 4760 3366 2148 1323 928
2016Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-12 68° 95° 4819 3415 2187 1354 954
07-13 69° 93° 4879 3464 2227 1385 980
07-14 70° 89° 4936 3511 2264 1414 1004
07-15 66° 79° 4986 3552 2294 1437 1022
07-16 64° 74° 5033 3589 2321 1456 1036
07-17 60° 87° 5085 3630 2353 1479 1054
07-18 70° 89° 5143 3678 2391 1509 1079
07-19 59° 89° 5195 3720 2422 1533 1098
07-20 59° 89° 5247 3762 2454 1557 1117
07-21 66° 92° 5304 3809 2492 1586 1141
07-22 73° 94° 5365 3861 2533 1620 1170
07-23 75° 96° 5429 3914 2577 1656 1201
2016Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-24 73° 85° 5486 3962 2614 1685 1225
07-25 76° 92° 5548 4014 2656 1719 1254
07-26 65° 89° 5603 4059 2691 1746 1276
07-27 65° 92° 5660 4105 2728 1774 1299
07-28 67° 86° 5715 4150 2763 1801 1321
07-29 67° 84° 5768 4194 2796 1827 1342
07-30 67° 80° 5819 4235 2827 1850 1360
07-31 67° 82° 5872 4277 2860 1874 1379
08-01 65° 87° 5926 4321 2894 1901 1401
08-02 68° 86° 5981 4366 2929 1927 1422
08-03 65° 91° 6037 4413 2965 1956 1446
08-04 64° 91° 6093 4458 3001 1983 1468
2016Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-05 70° 88° 6150 4506 3038 2013 1493
08-06 63° 85° 6203 4548 3071 2037 1512
08-07 65° 85° 6256 4591 3103 2062 1532
08-08 58° 86° 6306 4631 3133 2084 1549
08-09 63° 89° 6359 4675 3167 2110 1570
08-10 69° 95° 6419 4725 3207 2142 1597
08-11 75° 92° 6481 4776 3249 2176 1626
08-12 75° 93° 6543 4828 3291 2210 1655
08-13 75° 85° 6601 4876 3329 2240 1680
08-14 68° 83° 6654 4920 3362 2265 1700
08-15 66° 79° 6705 4960 3393 2287 1717
08-16 71° 82° 6759 5005 3427 2314 1739
2016Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-17 65° 85° 6812 5048 3460 2339 1759
08-18 64° 85° 6865 5090 3493 2363 1778
08-19 69° 90° 6922 5138 3530 2393 1803
08-20 67° 86° 6977 5182 3564 2419 1824
08-21 62° 77° 7024 5219 3592 2438 1838
08-22 56° 78° 7069 5254 3617 2455 1850
08-23 53° 61° 7104 5279 3632 2462 1852
08-24 73° 81° 7159 5324 3667 2489 1874
08-25 71° 85° 7215 5370 3703 2517 1897
08-26 62° 84° 7266 5411 3734 2541 1916
08-27 66° 77° 7316 5451 3764 2562 1932
08-28 71° 86° 7372 5498 3800 2591 1956
2016Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-29 65° 84° 7425 5540 3833 2615 1975
08-30 65° 82° 7476 5582 3864 2639 1994
08-31 64° 78° 7525 5620 3893 2659 2009
09-01 59° 72° 7569 5654 3916 2675 2020
09-02 55° 75° 7612 5687 3940 2690 2030
09-03 53° 77° 7654 5720 3962 2705 2040
09-04 52° 80° 7698 5754 3986 2721 2051
09-05 56° 84° 7746 5792 4014 2741 2066
09-06 68° 90° 7803 5839 4051 2770 2090
09-07 74° 87° 7862 5887 4090 2800 2115
09-08 73° 79° 7916 5931 4124 2827 2137
09-09 66° 81° 7967 5973 4155 2850 2155
2016Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-10 62° 73° 8013 6008 4181 2867 2167
09-11 55° 71° 8054 6039 4202 2880 2175
09-12 51° 75° 8095 6070 4223 2893 2183
09-13 55° 81° 8141 6106 4249 2911 2196
09-14 62° 74° 8187 6143 4275 2930 2210
09-15 52° 73° 8227 6173 4295 2942 2217
09-16 51° 78° 8270 6205 4317 2956 2226
09-17 67° 73° 8318 6243 4346 2976 2241
09-18 63° 79° 8367 6282 4374 2997 2257
09-19 58° 84° 8415 6321 4403 3018 2273
09-20 61° 82° 8465 6360 4433 3039 2289
09-21 55° 82° 8511 6397 4459 3058 2303
2016Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-22 62° 76° 8558 6434 4486 3077 2317
09-23 63° 79° 8607 6473 4515 3098 2333
09-24 56° 71° 8649 6504 4536 3111 2341
09-25 50° 73° 8688 6533 4556 3122 2347
09-26 61° 68° 8730 6566 4578 3137 2357
09-27 49° 68° 8767 6592 4595 3146 2361
09-28 50° 58° 8799 6615 4607 3150 2361
09-29 57° 62° 8837 6642 4625 3159 2365
09-30 59° 61° 8875 6671 4643 3170 2370

 

Latest Updates

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.