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Crabgrass/Annual Bluegrass Preemergence Timer (GDD 32)
forecast for Sat, Dec. 14. 2019

 
  

Chicago, IL

       

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Tabular Data

Daily GDD accumulation for various base temperature models in 2018 & 2019

2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
02-15 11° 35° 1 0 0 0 0
02-16 18° 30° 3 0 0 0 0
02-17 25° 28° 8 0 0 0 0
02-18 17° 29° 8 0 0 0 0
02-19 13° 32° 9 0 0 0 0
02-20 29° 36° 19 0 0 0 0
02-21 26° 35° 28 0 0 0 0
02-22 24° 37° 36 0 0 0 0
02-23 33° 41° 51 5 0 0 0
02-24 16° 49° 62 6 0 0 0
02-25 21° 62 6 0 0 0
02-26 16° 24° 62 6 0 0 0
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
02-27 18° 30° 63 6 0 0 0
02-28 14° 27° 63 6 0 0 0
03-01 23° 31° 69 6 0 0 0
03-02 27° 31° 76 6 0 0 0
03-03 10° 27° 76 6 0 0 0
03-04 -2° 13° 76 6 0 0 0
03-05 20° 76 6 0 0 0
03-06 10° 30° 76 6 0 0 0
03-07 17° 28° 76 6 0 0 0
03-08 20° 38° 83 6 0 0 0
03-09 28° 43° 97 9 0 0 0
03-10 32° 43° 112 15 0 0 0
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-11 27° 41° 124 16 0 0 0
03-12 26° 48° 139 21 0 0 0
03-13 40° 55° 164 37 6 0 0
03-14 41° 62° 194 56 15 1 0
03-15 35° 40° 209 62 15 1 0
03-16 29° 40° 222 65 15 1 0
03-17 29° 42° 235 68 15 1 0
03-18 29° 42° 249 72 15 1 0
03-19 30° 49° 267 80 15 1 0
03-20 39° 44° 287 89 15 1 0
03-21 37° 44° 305 97 15 1 0
03-22 32° 43° 320 103 15 1 0
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-23 26° 51° 337 110 15 1 0
03-24 36° 51° 358 121 16 1 0
03-25 32° 39° 372 125 16 1 0
03-26 27° 45° 386 129 16 1 0
03-27 29° 58° 407 140 17 1 0
03-28 44° 64° 439 162 29 5 0
03-29 39° 52° 463 176 33 5 0
03-30 32° 42° 478 181 33 5 0
03-31 24° 37° 486 181 33 5 0
04-01 28° 48° 503 187 33 5 0
04-02 38° 54° 527 201 37 5 0
04-03 35° 57° 551 215 42 5 0
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-04 39° 49° 573 227 44 5 0
04-05 39° 52° 597 241 47 5 0
04-06 40° 60° 625 259 55 5 0
04-07 49° 63° 659 283 69 11 1
04-08 52° 69° 697 311 88 22 7
04-09 44° 65° 730 334 100 26 7
04-10 35° 42° 746 340 100 26 7
04-11 38° 55° 770 355 104 26 7
04-12 42° 50° 795 369 109 26 7
04-13 34° 51° 815 380 109 26 7
04-14 32° 41° 830 384 109 26 7
04-15 31° 51° 849 394 109 26 7
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-16 47° 71° 886 421 126 35 11
04-17 45° 75° 924 448 144 45 16
04-18 44° 69° 959 473 159 52 17
04-19 40° 47° 981 485 161 52 17
04-20 40° 61° 1009 503 169 52 17
04-21 42° 74° 1046 530 186 61 21
04-22 56° 79° 1091 565 211 78 33
04-23 48° 66° 1126 590 226 85 35
04-24 41° 61° 1155 609 235 86 35
04-25 46° 63° 1188 632 248 91 35
04-26 49° 63° 1222 656 262 97 36
04-27 32° 51° 1241 666 262 97 36
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-28 34° 50° 1261 675 262 97 36
04-29 42° 51° 1286 690 266 97 36
04-30 39° 49° 1308 702 268 97 36
05-01 43° 57° 1336 720 276 97 36
05-02 41° 46° 1358 732 278 97 36
05-03 42° 52° 1383 747 283 97 36
05-04 40° 60° 1411 765 291 97 36
05-05 43° 72° 1446 791 307 105 39
05-06 46° 66° 1480 814 321 110 39
05-07 43° 48° 1503 828 324 110 39
05-08 44° 65° 1536 850 336 115 39
05-09 50° 68° 1573 877 353 124 43
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-10 44° 52° 1599 893 359 124 43
05-11 42° 51° 1624 908 364 124 43
05-12 43° 50° 1648 922 368 124 43
05-13 42° 58° 1676 940 377 124 43
05-14 40° 67° 1708 962 388 128 43
05-15 48° 73° 1747 991 407 138 49
05-16 58° 73° 1790 1024 431 154 60
05-17 45° 66° 1824 1048 444 159 60
05-18 44° 75° 1861 1075 462 169 65
05-19 50° 72° 1900 1104 481 180 71
05-20 47° 58° 1931 1125 491 183 71
05-21 45° 54° 1958 1142 499 183 71
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-22 50° 82° 2002 1176 522 198 82
05-23 64° 74° 2049 1213 549 217 96
05-24 53° 66° 2087 1241 567 227 100
05-25 65° 81° 2138 1282 598 250 118
05-26 55° 71° 2179 1313 619 263 126
05-27 51° 70° 2217 1341 638 273 132
05-28 49° 68° 2254 1368 654 282 136
05-29 50° 68° 2291 1396 672 292 140
05-30 57° 75° 2336 1430 696 308 151
05-31 59° 82° 2384 1468 724 328 166
06-01 53° 72° 2425 1499 745 341 174
06-02 50° 66° 2461 1525 761 349 177
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-03 49° 63° 2495 1549 775 355 179
06-04 55° 81° 2541 1585 801 373 191
06-05 59° 81° 2589 1623 829 393 206
06-06 55° 69° 2629 1653 849 405 214
06-07 54° 76° 2672 1686 873 420 224
06-08 58° 73° 2716 1720 896 436 234
06-09 62° 69° 2760 1754 920 452 245
06-10 61° 73° 2805 1789 945 469 257
06-11 54° 80° 2850 1824 970 486 269
06-12 58° 74° 2894 1858 994 502 280
06-13 52° 67° 2931 1885 1011 511 285
06-14 51° 79° 2974 1918 1034 526 294
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-15 55° 68° 3013 1947 1053 537 301
06-16 54° 57° 3047 1971 1067 543 301
06-17 54° 62° 3083 1997 1083 551 304
06-18 54° 76° 3125 2030 1106 566 314
06-19 55° 69° 3165 2060 1126 578 321
06-20 55° 65° 3203 2088 1144 588 326
06-21 51° 70° 3242 2116 1162 598 331
06-22 58° 77° 3288 2152 1188 616 344
06-23 63° 79° 3337 2191 1217 637 361
06-24 67° 75° 3386 2230 1246 658 377
06-25 62° 84° 3437 2271 1278 681 395
06-26 68° 85° 3492 2316 1312 708 416
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-27 67° 88° 3547 2361 1348 736 439
06-28 69° 88° 3604 2408 1384 764 462
06-29 68° 83° 3657 2452 1418 790 483
06-30 70° 86° 3713 2498 1454 818 506
07-01 69° 88° 3770 2544 1490 846 529
07-02 76° 92° 3831 2596 1532 880 558
07-03 71° 81° 3885 2640 1566 906 579
07-04 69° 90° 3943 2687 1603 935 603
07-05 74° 90° 4002 2737 1643 967 630
07-06 68° 80° 4055 2779 1675 991 649
07-07 66° 74° 4103 2817 1703 1011 665
07-08 62° 80° 4152 2856 1732 1032 680
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-09 62° 87° 4204 2898 1764 1056 700
07-10 75° 94° 4267 2951 1807 1091 729
07-11 67° 80° 4318 2993 1839 1115 748
07-12 60° 86° 4370 3034 1870 1138 766
07-13 71° 92° 4429 3083 1910 1170 793
07-14 68° 88° 4485 3130 1946 1198 816
07-15 72° 91° 4545 3179 1986 1230 843
07-16 71° 80° 4599 3223 2020 1255 864
07-17 72° 88° 4657 3271 2058 1285 889
07-18 71° 86° 4713 3318 2094 1314 912
07-19 80° 90° 4777 3371 2137 1349 942
07-20 74° 94° 4839 3423 2179 1383 971
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-21 70° 76° 4890 3464 2210 1406 989
07-22 64° 73° 4936 3500 2237 1424 1003
07-23 60° 79° 4983 3537 2264 1444 1017
07-24 60° 78° 5031 3575 2291 1463 1031
07-25 62° 83° 5081 3615 2321 1485 1048
07-26 65° 85° 5134 3658 2354 1510 1069
07-27 71° 87° 5191 3705 2391 1539 1093
07-28 73° 89° 5250 3754 2431 1571 1119
07-29 73° 81° 5306 3800 2466 1598 1141
07-30 67° 75° 5355 3839 2495 1619 1157
07-31 61° 74° 5400 3874 2521 1637 1170
08-01 59° 78° 5447 3911 2547 1655 1183
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-02 61° 80° 5495 3949 2576 1676 1199
08-03 62° 86° 5547 3991 2607 1699 1218
08-04 69° 85° 5602 4036 2643 1727 1240
08-05 69° 90° 5659 4084 2680 1756 1264
08-06 69° 82° 5713 4127 2713 1781 1285
08-07 66° 87° 5767 4171 2748 1808 1306
08-08 70° 86° 5823 4217 2783 1835 1329
08-09 62° 81° 5872 4257 2813 1857 1345
08-10 64° 83° 5924 4298 2844 1880 1364
08-11 67° 83° 5977 4341 2877 1905 1384
08-12 71° 81° 6031 4385 2911 1931 1405
08-13 71° 82° 6085 4429 2946 1958 1426
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-14 66° 78° 6135 4469 2975 1979 1443
08-15 65° 76° 6183 4508 3004 2000 1458
08-16 63° 83° 6234 4549 3035 2023 1476
08-17 67° 76° 6284 4588 3064 2044 1492
08-18 69° 81° 6337 4631 3097 2069 1512
08-19 68° 82° 6390 4674 3130 2094 1533
08-20 70° 77° 6441 4716 3162 2118 1551
08-21 64° 83° 6493 4757 3194 2141 1570
08-22 67° 74° 6542 4796 3222 2162 1585
08-23 62° 72° 6587 4831 3247 2179 1597
08-24 60° 72° 6631 4865 3271 2195 1609
08-25 61° 75° 6677 4901 3297 2213 1622
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-26 65° 75° 6725 4940 3326 2234 1637
08-27 65° 78° 6775 4980 3356 2256 1654
08-28 59° 75° 6820 5015 3381 2273 1666
08-29 57° 85° 6869 5054 3410 2294 1682
08-30 60° 73° 6914 5088 3435 2310 1694
08-31 59° 73° 6958 5122 3459 2326 1705
09-01 62° 71° 7002 5157 3483 2343 1716
09-02 59° 82° 7051 5195 3512 2363 1732
09-03 66° 80° 7103 5237 3543 2387 1750
09-04 60° 73° 7147 5271 3568 2403 1762
09-05 57° 71° 7189 5304 3590 2418 1771
09-06 63° 71° 7234 5339 3615 2435 1783
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-07 56° 78° 7280 5374 3640 2452 1795
09-08 63° 66° 7322 5406 3662 2466 1805
09-09 61° 74° 7367 5442 3688 2484 1817
09-10 70° 90° 7425 5490 3726 2514 1842
09-11 73° 90° 7485 5539 3765 2545 1868
09-12 64° 77° 7533 5578 3794 2566 1884
09-13 63° 76° 7581 5615 3821 2585 1899
09-14 56° 80° 7627 5651 3847 2603 1912
09-15 64° 77° 7676 5690 3876 2624 1927
09-16 64° 71° 7722 5726 3902 2642 1940
09-17 64° 75° 7770 5764 3930 2662 1955
09-18 62° 81° 7819 5803 3960 2683 1972
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-19 62° 82° 7869 5843 3989 2705 1989
09-20 67° 84° 7922 5887 4023 2731 2009
09-21 71° 80° 7976 5930 4056 2756 2029
09-22 68° 76° 8026 5970 4086 2778 2047
09-23 60° 72° 8070 6005 4111 2795 2058
09-24 57° 79° 8116 6040 4137 2812 2071
09-25 65° 79° 8166 6080 4167 2834 2088
09-26 55° 72° 8208 6112 4188 2848 2097
09-27 58° 69° 8249 6144 4210 2862 2105
09-28 58° 67° 8290 6174 4230 2874 2112
09-29 60° 66° 8331 6205 4251 2887 2120
09-30 63° 84° 8383 6247 4283 2911 2139
2019Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
02-15 37° 44° 18 8 0 0 0
02-16 22° 39° 27 8 0 0 0
02-17 18° 34° 31 8 0 0 0
02-18 19° 38° 38 8 0 0 0
02-19 37° 59° 63 24 6 0 0
02-20 35° 64° 91 42 14 0 0
02-21 27° 34° 100 42 14 0 0
02-22 29° 39° 112 44 14 0 0
02-23 35° 43° 129 51 14 0 0
02-24 33° 44° 146 57 14 0 0
02-25 34° 47° 164 66 14 0 0
02-26 29° 54° 184 75 14 0 0
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
02-27 41° 62° 213 95 23 1 0
02-28 36° 59° 238 110 28 1 0
03-01 34° 41° 254 116 28 1 0
03-02 31° 43° 269 121 28 1 0
03-03 32° 40° 283 125 28 1 0
03-04 33° 44° 299 131 28 1 0
03-05 33° 38° 313 135 28 1 0
03-06 33° 38° 327 138 28 1 0
03-07 26° 33° 334 138 28 1 0
03-08 24° 34° 341 138 28 1 0
03-09 23° 37° 349 138 28 1 0
03-10 23° 38° 358 138 28 1 0
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-11 28° 38° 369 139 28 1 0
03-12 28° 43° 383 143 28 1 0
03-13 26° 33° 390 143 28 1 0
03-14 23° 47° 403 146 28 1 0
03-15 31° 45° 419 152 28 1 0
03-16 29° 34° 429 152 28 1 0
03-17 31° 43° 444 158 28 1 0
03-18 27° 56° 464 167 28 1 0
03-19 34° 43° 480 173 28 1 0
03-20 27° 36° 490 173 28 1 0
03-21 30° 37° 501 175 28 1 0
03-22 27° 45° 515 179 28 1 0
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-23 28° 40° 527 181 28 1 0
03-24 34° 40° 542 186 28 1 0
03-25 28° 39° 554 187 28 1 0
03-26 32° 52° 574 197 28 1 0
03-27 44° 51° 599 213 34 1 0
03-28 39° 49° 621 225 36 1 0
03-29 37° 48° 642 235 36 1 0
03-30 34° 44° 659 242 36 1 0
03-31 36° 56° 683 256 40 1 0
04-01 26° 35° 691 256 40 1 0
04-02 24° 43° 702 258 40 1 0
04-03 35° 40° 718 263 40 1 0
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-04 26° 35° 726 263 40 1 0
04-05 27° 43° 739 266 40 1 0
04-06 29° 37° 750 267 40 1 0
04-07 21° 37° 757 267 40 1 0
04-08 25° 38° 767 267 40 1 0
04-09 31° 36° 778 268 40 1 0
04-10 28° 44° 792 272 40 1 0
04-11 39° 64° 821 291 49 3 0
04-12 43° 73° 857 317 65 10 3
04-13 39° 46° 878 328 66 10 3
04-14 36° 41° 894 334 66 10 3
04-15 32° 36° 906 336 66 10 3
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-16 26° 33° 914 336 66 10 3
04-17 30° 41° 927 340 66 10 3
04-18 32° 36° 939 341 66 10 3
04-19 33° 52° 960 352 67 10 3
04-20 34° 59° 984 367 71 10 3
04-21 37° 53° 1007 380 74 10 3
04-22 42° 58° 1036 398 82 11 3
04-23 43° 59° 1065 417 92 12 3
04-24 47° 61° 1097 439 104 16 3
04-25 40° 49° 1119 451 106 16 3
04-26 34° 63° 1146 468 113 16 3
04-27 40° 54° 1171 483 118 16 3
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-28 37° 47° 1191 493 118 16 3
04-29 32° 54° 1212 504 119 16 3
04-30 38° 78° 1248 530 135 24 6
05-01 59° 85° 1298 570 165 46 23
05-02 65° 87° 1352 614 199 72 44
05-03 51° 66° 1388 641 215 80 47
05-04 59° 74° 1433 675 240 97 59
05-05 54° 82° 1479 711 266 115 72
05-06 50° 64° 1514 736 281 122 74
05-07 46° 72° 1551 763 298 131 78
05-08 55° 80° 1596 799 323 148 90
05-09 59° 78° 1643 835 350 167 104
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-10 57° 68° 1683 866 370 179 111
05-11 46° 55° 1712 884 379 180 111
05-12 44° 48° 1736 898 383 180 111
05-13 46° 62° 1768 920 395 184 111
05-14 53° 81° 1813 955 420 201 123
05-15 52° 64° 1849 981 436 209 126
05-16 47° 77° 1889 1011 456 221 133
05-17 51° 64° 1924 1037 471 229 136
05-18 52° 61° 1959 1061 486 235 137
05-19 54° 65° 1996 1089 503 245 142
05-20 44° 57° 2025 1107 512 245 142
05-21 47° 60° 2056 1129 523 248 142
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-22 51° 61° 2091 1153 538 255 143
05-23 50° 75° 2131 1183 558 267 151
05-24 55° 85° 2179 1222 586 287 166
05-25 65° 89° 2234 1267 621 314 188
05-26 69° 88° 2291 1313 658 343 212
05-27 67° 94° 2350 1362 697 374 238
05-28 70° 94° 2410 1412 737 406 265
05-29 64° 84° 2462 1455 769 430 284
05-30 66° 81° 2513 1496 800 454 302
05-31 71° 87° 2571 1543 838 483 327
06-01 53° 75° 2613 1576 860 498 336
06-02 51° 67° 2650 1603 877 507 340
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-03 62° 77° 2698 1640 905 526 355
06-04 55° 80° 2743 1676 930 543 367
06-05 52° 71° 2783 1705 950 555 374
06-06 49° 74° 2822 1735 969 566 380
06-07 59° 77° 2868 1771 995 585 393
06-08 58° 68° 2909 1802 1016 598 401
06-09 58° 74° 2953 1836 1040 613 412
06-10 58° 66° 2993 1866 1060 626 419
06-11 60° 67° 3035 1898 1082 639 428
06-12 62° 78° 3083 1935 1110 659 443
06-13 66° 80° 3134 1976 1141 682 461
06-14 60° 80° 3182 2015 1169 702 476
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-15 62° 87° 3234 2057 1201 727 495
06-16 70° 88° 3292 2104 1239 756 520
06-17 77° 91° 3354 2156 1281 790 549
06-18 71° 95° 3415 2207 1322 823 577
06-19 62° 76° 3462 2245 1349 842 591
06-20 63° 72° 3508 2280 1375 860 604
06-21 63° 65° 3550 2313 1397 874 613
06-22 59° 64° 3590 2342 1417 886 620
06-23 61° 77° 3637 2379 1444 905 634
06-24 63° 76° 3685 2417 1472 925 648
06-25 60° 76° 3731 2453 1498 943 662
06-26 65° 80° 3781 2494 1528 965 679
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-27 68° 76° 3831 2533 1558 987 696
06-28 64° 82° 3882 2574 1589 1010 714
06-29 70° 95° 3943 2625 1630 1043 741
06-30 79° 94° 4007 2680 1674 1079 773
07-01 76° 89° 4068 2730 1715 1112 801
07-02 68° 82° 4121 2773 1748 1137 820
07-03 60° 89° 4173 2816 1780 1162 840
07-04 73° 90° 4233 2866 1820 1193 867
07-05 73° 90° 4293 2915 1860 1225 894
07-06 65° 77° 4341 2954 1888 1246 909
07-07 57° 80° 4388 2990 1915 1264 923
07-08 60° 87° 4439 3032 1946 1288 941
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-09 64° 92° 4495 3077 1982 1315 964
07-10 71° 85° 4551 3123 2018 1343 987
07-11 65° 85° 4604 3166 2051 1368 1007
07-12 67° 84° 4657 3210 2084 1393 1027
07-13 70° 91° 4716 3258 2123 1424 1053
07-14 71° 79° 4769 3301 2156 1449 1073
07-15 70° 87° 4825 3347 2192 1477 1096
07-16 75° 86° 4884 3396 2231 1508 1122
07-17 66° 78° 4934 3436 2261 1530 1139
07-18 62° 76° 4980 3473 2287 1549 1152
07-19 61° 85° 5032 3514 2319 1572 1171
07-20 70° 79° 5084 3557 2351 1596 1190
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-21 68° 75° 5133 3596 2380 1618 1206
07-22 67° 73° 5182 3634 2409 1638 1222
07-23 65° 78° 5231 3674 2438 1660 1238
07-24 65° 82° 5283 3715 2470 1683 1257
07-25 65° 85° 5336 3759 2503 1709 1277
07-26 71° 80° 5390 3802 2537 1734 1298
07-27 61° 76° 5436 3839 2563 1752 1311
07-28 58° 78° 5482 3875 2589 1771 1324
07-29 60° 79° 5530 3912 2617 1790 1339
07-30 60° 79° 5577 3950 2644 1810 1353
07-31 65° 77° 5626 3989 2673 1831 1369
08-01 62° 84° 5677 4030 2704 1853 1387
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-02 68° 84° 5731 4073 2738 1879 1408
08-03 68° 84° 5785 4117 2772 1905 1429
08-04 69° 95° 5845 4167 2812 1937 1455
08-05 77° 93° 5907 4220 2854 1972 1485
08-06 71° 80° 5960 4263 2887 1997 1505
08-07 69° 82° 6014 4306 2921 2022 1526
08-08 68° 78° 6065 4348 2952 2046 1544
08-09 66° 87° 6120 4392 2987 2072 1566
08-10 69° 79° 6172 4435 3019 2097 1585
08-11 66° 86° 6226 4479 3053 2123 1606
08-12 66° 85° 6280 4522 3087 2148 1627
08-13 64° 86° 6333 4565 3120 2173 1647
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-14 68° 87° 6388 4611 3155 2201 1669
08-15 71° 84° 6444 4656 3191 2228 1692
08-16 71° 83° 6499 4702 3226 2255 1714
08-17 69° 80° 6551 4744 3258 2280 1733
08-18 70° 78° 6603 4786 3290 2303 1752
08-19 65° 83° 6655 4828 3322 2327 1771
08-20 70° 76° 6706 4869 3353 2351 1789
08-21 68° 75° 6756 4908 3383 2372 1806
08-22 59° 77° 6802 4944 3409 2390 1819
08-23 57° 79° 6848 4980 3435 2408 1832
08-24 62° 72° 6893 5015 3460 2425 1844
08-25 64° 84° 6945 5057 3492 2449 1863
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-26 71° 92° 7004 5107 3531 2481 1889
08-27 77° 93° 7067 5160 3574 2516 1919
08-28 70° 87° 7124 5207 3611 2544 1943
08-29 65° 72° 7171 5243 3638 2563 1957
08-30 61° 70° 7214 5277 3661 2579 1967
08-31 58° 83° 7263 5315 3690 2599 1983
09-01 71° 83° 7318 5360 3725 2626 2005
09-02 70° 87° 7374 5407 3761 2655 2028
09-03 70° 80° 7427 5450 3794 2680 2048
09-04 70° 88° 7484 5497 3831 2708 2072
09-05 70° 89° 7541 5544 3868 2738 2096
09-06 65° 70° 7587 5579 3894 2755 2109
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-07 65° 68° 7631 5614 3918 2771 2120
09-08 63° 67° 7674 5646 3941 2786 2130
09-09 59° 66° 7714 5677 3961 2799 2137
09-10 58° 71° 7757 5709 3984 2813 2147
09-11 55° 77° 7800 5743 4007 2829 2157
09-12 59° 78° 7847 5780 4034 2847 2171
09-13 57° 75° 7891 5814 4058 2863 2182
09-14 61° 83° 7941 5854 4088 2885 2199
09-15 61° 79° 7989 5892 4116 2905 2214
09-16 65° 85° 8042 5935 4149 2931 2234
09-17 66° 88° 8098 5980 4185 2958 2256
09-18 67° 74° 8146 6018 4213 2978 2272
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-19 65° 73° 8193 6055 4240 2997 2286
09-20 67° 87° 8248 6100 4275 3024 2307
09-21 58° 81° 8295 6138 4302 3044 2322
09-22 54° 61° 8331 6164 4318 3051 2325
09-23 48° 67° 8367 6189 4334 3059 2328
09-24 57° 69° 8408 6220 4355 3072 2336
09-25 66° 82° 8460 6262 4387 3096 2355
09-26 50° 67° 8496 6289 4403 3104 2358
09-27 50° 69° 8534 6316 4421 3114 2363
09-28 48° 61° 8566 6338 4433 3118 2363
09-29 41° 59° 8594 6357 4441 3118 2363
09-30 54° 62° 8630 6383 4457 3126 2366
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55

 

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.