Welcome!

It appears to be your first time visiting GDDTracker
Please enter your zip code for a customized experience. Also, be sure and watch our video introduction video.

   
       

MSU Proxy/Primo Seedhead Timer (GDD 32)
through Wed, May. 23. 2018

 

GDD Total: 1730 (Base 32) through Wed, May. 23, 2018

  

Bellbrook, OH

       

Forecast »

Done

651

Over

501

Target

220

Close

121

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° 71° 120 70 34 15 5
02-20 61° 76° 167 107 60 33 19
02-21 39° 66° 197 127 71 36 19
02-22 36° 46° 216 136 71 36 19
02-23 44° 61° 246 156 81 38 19
02-24 45° 51° 272 172 87 38 19
02-25 41° 58° 300 190 95 38 19
02-26 32° 53° 320 200 95 38 19
02-27 33° 60° 345 215 100 38 19
02-28 48° 58° 376 236 110 41 19
03-01 37° 56° 400 250 115 41 19
03-02 31° 44° 416 256 115 41 19
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-03 26° 44° 429 259 115 41 19
03-04 25° 45° 442 262 115 41 19
03-05 26° 43° 454 264 115 41 19
03-06 36° 56° 478 278 119 41 19
03-07 30° 37° 490 280 119 41 19
03-08 25° 31° 495 280 119 41 19
03-09 19° 39° 503 280 119 41 19
03-10 25° 45° 515 282 119 41 19
03-11 25° 41° 526 284 119 41 19
03-12 25° 38° 536 284 119 41 19
03-13 24° 36° 544 284 119 41 19
03-14 24° 37° 553 284 119 41 19
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-15 32° 50° 572 293 119 41 19
03-16 21° 41° 581 293 119 41 19
03-17 30° 43° 596 297 119 41 19
03-18 23° 55° 613 304 119 41 19
03-19 32° 60° 636 318 123 41 19
03-20 31° 41° 650 322 123 41 19
03-21 29° 36° 661 322 123 41 19
03-22 23° 42° 671 323 123 41 19
03-23 25° 45° 684 326 123 41 19
03-24 28° 38° 696 327 123 41 19
03-25 26° 45° 709 331 123 41 19
03-26 33° 53° 730 342 124 41 19
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-27 46° 55° 759 360 132 42 19
03-28 50° 55° 789 381 143 44 19
03-29 43° 60° 819 400 152 46 19
03-30 37° 49° 839 411 153 46 19
03-31 32° 57° 862 424 156 46 19
04-01 33° 48° 880 432 156 46 19
04-02 30° 42° 894 436 156 46 19
04-03 41° 68° 927 459 168 50 19
04-04 32° 61° 952 473 173 50 19
04-05 28° 47° 967 479 173 50 19
04-06 31° 57° 989 491 175 50 19
04-07 27° 39° 1000 492 175 50 19
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-08 25° 40° 1010 492 175 50 19
04-09 31° 39° 1023 495 175 50 19
04-10 26° 43° 1036 498 175 50 19
04-11 29° 62° 1059 511 178 50 19
04-12 53° 77° 1102 544 201 66 29
04-13 62° 79° 1151 583 230 86 45
04-14 54° 68° 1190 612 249 97 51
04-15 46° 60° 1221 633 260 100 51
04-16 32° 45° 1237 639 260 100 51
04-17 31° 40° 1251 643 260 100 51
04-18 30° 62° 1276 657 264 100 51
04-19 35° 53° 1298 669 266 100 51
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-20 31° 58° 1320 682 269 100 51
04-21 34° 58° 1344 696 273 100 51
04-22 43° 66° 1377 719 286 105 51
04-23 50° 64° 1412 744 301 112 53
04-24 51° 54° 1443 765 312 115 53
04-25 51° 62° 1478 789 327 122 55
04-26 40° 68° 1510 811 338 125 55
04-27 41° 69° 1543 834 352 131 55
04-28 42° 50° 1567 848 356 131 55
04-29 31° 58° 1589 861 358 131 55
04-30 34° 69° 1619 880 368 132 55
05-01 45° 78° 1658 910 387 144 61
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-02 58° 81° 1706 948 415 163 76
05-03 68° 77° 1757 988 445 186 94
05-04 60° 79° 1804 1025 473 205 108
05-05 51° 66° 1841 1052 489 214 112
05-06 52° 76° 1883 1084 512 228 121
05-07 50° 69° 1920 1112 529 238 126
05-08 44° 76° 1959 1140 548 248 131
05-09 53° 81° 2004 1175 573 265 143
05-10 62° 78° 2052 1214 601 286 158
05-11 56° 83° 2100 1251 629 305 173
05-12 67° 85° 2153 1295 662 331 194
05-13 57° 89° 2204 1336 693 354 211
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-14 65° 85° 2257 1379 726 379 232
05-15 68° 82° 2310 1422 759 404 251
05-16 63° 73° 2356 1458 785 422 264
05-17 61° 77° 2403 1495 812 440 278
05-18 64° 73° 2449 1531 838 459 291
05-19 66° 75° 2498 1569 866 479 307
05-20 65° 81° 2549 1610 898 502 325
05-21 62° 85° 2600 1652 929 525 343
05-22 66° 81° 2651 1693 960 549 362
05-23 61° 78° 2699 1730 987 568 376
05-24 55° 83° 2746 1767 1014 587 390
05-25 60° 86° 2797 1808 1045 610 408
2018Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-26 66° 87° 2851 1853 1080 637 429
05-27 68° 87° 2907 1898 1115 664 452
05-28 68° 86° 2962 1943 1150 691 474
05-29 67° 85° 3016 1987 1184 717 495
05-30 67° 86° 3070 2031 1219 743 516
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
02-19 40° 56° 122 65 25 2 0
02-20 36° 65° 151 83 33 3 0
02-21 47° 66° 185 108 48 9 2
02-22 53° 61° 220 133 63 16 4
02-23 55° 69° 260 163 83 28 10
02-24 58° 76° 305 197 107 45 22
02-25 29° 53° 324 207 107 45 22
02-26 25° 44° 337 210 107 45 22
02-27 37° 46° 356 219 107 45 22
02-28 41° 60° 385 238 116 45 22
03-01 38° 61° 412 255 123 45 22
03-02 32° 39° 426 259 123 45 22
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-03 27° 34° 435 259 123 45 22
03-04 24° 36° 443 259 123 45 22
03-05 24° 61° 463 269 124 45 22
03-06 49° 55° 493 290 134 47 22
03-07 42° 57° 521 307 141 47 22
03-08 39° 57° 547 323 147 47 22
03-09 35° 65° 575 341 155 47 22
03-10 28° 39° 586 342 155 47 22
03-11 24° 27° 589 342 155 47 22
03-12 20° 34° 594 342 155 47 22
03-13 26° 39° 605 343 155 47 22
03-14 16° 27° 605 343 155 47 22
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-15 15° 30° 606 343 155 47 22
03-16 16° 40° 612 343 155 47 22
03-17 25° 36° 620 343 155 47 22
03-18 37° 43° 638 351 155 47 22
03-19 34° 44° 655 358 155 47 22
03-20 33° 54° 677 370 157 47 22
03-21 41° 55° 703 386 163 47 22
03-22 26° 38° 713 386 163 47 22
03-23 25° 55° 731 394 163 47 22
03-24 50° 73° 770 423 183 59 29
03-25 59° 74° 815 457 207 75 40
03-26 55° 64° 852 485 225 85 44
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-27 48° 65° 887 510 239 91 46
03-28 50° 58° 919 532 252 96 46
03-29 40° 59° 947 549 259 96 46
03-30 47° 78° 987 580 280 108 54
03-31 44° 57° 1016 598 288 108 54
04-01 39° 46° 1036 609 288 108 54
04-02 33° 61° 1061 624 293 108 54
04-03 51° 66° 1097 650 310 117 57
04-04 50° 61° 1131 674 323 122 57
04-05 41° 75° 1167 700 339 130 61
04-06 38° 53° 1191 713 343 130 61
04-07 35° 53° 1212 725 345 130 61
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-08 30° 61° 1236 739 348 130 61
04-09 44° 75° 1273 766 365 140 65
04-10 61° 77° 1320 803 392 159 79
04-11 54° 67° 1358 831 411 169 84
04-12 42° 66° 1391 853 423 173 84
04-13 46° 71° 1427 879 439 181 87
04-14 51° 79° 1469 912 462 196 97
04-15 60° 81° 1518 951 490 216 112
04-16 63° 78° 1566 989 519 237 128
04-17 54° 69° 1606 1019 538 248 134
04-18 46° 76° 1645 1048 557 259 140
04-19 63° 79° 1694 1086 586 280 156
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-20 61° 80° 1742 1125 615 301 172
04-21 50° 65° 1778 1151 630 309 175
04-22 44° 54° 1805 1168 638 309 175
04-23 39° 66° 1836 1189 648 311 175
04-24 44° 73° 1872 1215 664 319 178
04-25 51° 76° 1913 1246 686 333 186
04-26 55° 81° 1960 1282 712 351 199
04-27 52° 70° 1999 1311 731 362 205
04-28 43° 70° 2033 1336 746 368 207
04-29 58° 77° 2078 1371 771 386 219
04-30 57° 80° 2125 1408 797 404 233
05-01 51° 72° 2164 1437 817 416 239
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-02 46° 63° 2197 1460 829 420 239
05-03 41° 56° 2223 1476 836 420 239
05-04 49° 59° 2255 1498 847 424 239
05-05 44° 55° 2283 1515 855 424 239
05-06 40° 59° 2311 1533 863 424 239
05-07 38° 59° 2337 1550 869 424 239
05-08 33° 61° 2362 1565 875 424 239
05-09 49° 57° 2393 1586 886 427 239
05-10 53° 75° 2436 1619 908 441 249
05-11 54° 68° 2475 1648 927 453 255
05-12 50° 65° 2510 1673 943 460 257
05-13 43° 72° 2546 1699 958 468 260
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-14 54° 80° 2591 1734 984 485 272
05-15 52° 78° 2634 1767 1007 500 282
05-16 60° 74° 2679 1802 1031 517 294
05-17 65° 83° 2731 1844 1063 541 313
05-18 68° 81° 2784 1887 1096 565 333
05-19 62° 82° 2834 1927 1126 587 350
05-20 55° 77° 2878 1961 1150 604 361
05-21 65° 76° 2926 1999 1178 624 376
05-22 50° 69° 2964 2026 1196 633 380
05-23 49° 74° 3003 2056 1216 645 387
05-24 61° 72° 3048 2090 1240 661 398
05-25 58° 67° 3088 2121 1260 674 406
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-26 55° 78° 3132 2155 1285 690 417
05-27 64° 81° 3183 2196 1315 713 435
05-28 64° 76° 3231 2234 1343 732 450
05-29 60° 79° 3278 2271 1370 752 464
05-30 57° 78° 3323 2306 1396 769 476
05-31 56° 78° 3368 2341 1421 786 488
06-01 55° 77° 3412 2375 1445 802 499
06-02 55° 81° 3458 2411 1470 820 512
06-03 54° 85° 3505 2448 1498 839 526
06-04 61° 86° 3557 2490 1529 863 545
06-05 65° 83° 3609 2532 1561 887 564
06-06 53° 74° 3651 2563 1583 900 572
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-07 54° 62° 3687 2589 1599 908 575
06-08 50° 74° 3727 2619 1619 920 582
06-09 52° 81° 3771 2654 1643 937 594
06-10 63° 83° 3822 2695 1674 960 612
06-11 63° 86° 3875 2737 1707 984 631
06-12 66° 89° 3930 2783 1743 1012 654
06-13 70° 81° 3984 2827 1776 1038 675
06-14 67° 76° 4034 2866 1806 1059 691
06-15 67° 82° 4086 2909 1839 1084 711
06-16 68° 87° 4142 2955 1874 1112 734
06-17 67° 86° 4196 2999 1909 1138 755
06-18 69° 83° 4250 3043 1942 1164 776
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-19 65° 78° 4300 3083 1972 1185 793
06-20 59° 76° 4345 3118 1998 1203 805
06-21 62° 87° 4398 3161 2030 1228 825
06-22 71° 81° 4452 3205 2065 1254 846
06-23 67° 74° 4501 3243 2093 1274 861
06-24 61° 78° 4548 3281 2121 1294 876
06-25 54° 75° 4591 3313 2143 1308 885
06-26 56° 72° 4632 3345 2165 1322 894
06-27 51° 72° 4672 3375 2184 1334 901
06-28 51° 78° 4715 3408 2207 1349 911
06-29 64° 87° 4768 3451 2240 1374 931
06-30 71° 83° 4823 3496 2275 1401 953
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-01 68° 79° 4875 3537 2307 1424 971
07-02 64° 84° 4927 3579 2339 1448 990
07-03 62° 86° 4979 3622 2371 1473 1010
07-04 65° 85° 5032 3665 2405 1498 1030
07-05 65° 84° 5085 3707 2437 1522 1049
07-06 70° 77° 5136 3748 2468 1545 1067
07-07 65° 84° 5188 3791 2500 1570 1087
07-08 64° 79° 5238 3831 2530 1591 1104
07-09 56° 80° 5284 3866 2556 1609 1116
07-10 65° 84° 5336 3909 2588 1634 1136
07-11 70° 78° 5388 3951 2621 1658 1155
07-12 70° 88° 5445 3998 2658 1687 1179
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-13 73° 83° 5501 4044 2693 1714 1202
07-14 72° 86° 5558 4090 2730 1743 1225
07-15 60° 80° 5606 4129 2758 1764 1241
07-16 62° 83° 5656 4169 2789 1786 1258
07-17 65° 84° 5709 4211 2821 1810 1277
07-18 68° 89° 5765 4258 2857 1839 1301
07-19 69° 88° 5821 4304 2894 1867 1324
07-20 69° 85° 5877 4349 2929 1894 1346
07-21 71° 84° 5932 4395 2964 1921 1369
07-22 72° 90° 5991 4443 3003 1952 1394
07-23 72° 81° 6045 4488 3038 1979 1416
07-24 66° 81° 6096 4529 3069 2002 1434
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-25 57° 77° 6141 4564 3094 2019 1446
07-26 56° 82° 6189 4601 3121 2038 1460
07-27 68° 78° 6240 4642 3152 2061 1478
07-28 67° 81° 6292 4685 3184 2086 1498
07-29 58° 78° 6338 4721 3211 2104 1511
07-30 57° 83° 6386 4759 3238 2124 1526
07-31 60° 83° 6436 4799 3268 2145 1543
08-01 61° 82° 6485 4838 3298 2167 1559
08-02 64° 82° 6536 4879 3329 2190 1577
08-03 64° 85° 6589 4922 3361 2214 1597
08-04 62° 77° 6636 4959 3389 2234 1611
08-05 53° 76° 6679 4992 3412 2249 1621
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-06 60° 71° 6723 5026 3435 2264 1632
08-07 63° 73° 6769 5062 3461 2283 1645
08-08 58° 78° 6815 5097 3487 2300 1657
08-09 53° 80° 6859 5132 3511 2317 1669
08-10 58° 84° 6908 5171 3540 2337 1685
08-11 62° 83° 6958 5211 3570 2360 1702
08-12 65° 78° 7007 5250 3600 2381 1718
08-13 57° 81° 7054 5287 3626 2400 1732
08-14 62° 82° 7104 5327 3656 2422 1749
08-15 65° 87° 7158 5370 3690 2447 1769
08-16 66° 89° 7213 5416 3725 2475 1792
08-17 73° 86° 7270 5463 3763 2504 1816
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-18 70° 83° 7325 5507 3797 2530 1837
08-19 66° 85° 7378 5551 3831 2556 1858
08-20 65° 88° 7433 5596 3865 2582 1880
08-21 69° 88° 7490 5642 3902 2611 1903
08-22 71° 81° 7543 5686 3936 2637 1924
08-23 57° 77° 7588 5721 3960 2654 1936
08-24 53° 75° 7630 5753 3982 2667 1945
08-25 54° 73° 7672 5784 4004 2681 1953
08-26 52° 74° 7712 5815 4025 2694 1961
08-27 52° 78° 7755 5848 4048 2709 1971
08-28 61° 74° 7801 5884 4073 2727 1984
08-29 62° 75° 7848 5920 4100 2745 1997
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-30 58° 80° 7895 5957 4127 2764 2011
08-31 61° 80° 7943 5995 4155 2784 2026
09-01 55° 61° 7979 6021 4171 2792 2029
09-02 53° 60° 8013 6046 4185 2799 2031
09-03 57° 78° 8059 6082 4211 2817 2044
09-04 57° 85° 8108 6121 4240 2837 2060
09-05 56° 72° 8150 6153 4262 2852 2069
09-06 47° 65° 8184 6177 4277 2858 2070
09-07 47° 66° 8219 6202 4291 2865 2072
09-08 48° 69° 8256 6229 4308 2874 2076
09-09 54° 70° 8296 6259 4328 2885 2083
09-10 47° 70° 8332 6285 4345 2894 2086
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-11 49° 71° 8370 6313 4363 2904 2091
09-12 56° 68° 8411 6343 4383 2916 2098
09-13 59° 67° 8452 6374 4404 2929 2106
09-14 59° 68° 8493 6406 4426 2943 2115
09-15 59° 76° 8539 6442 4451 2961 2128
09-16 57° 80° 8586 6478 4478 2979 2141
09-17 56° 83° 8633 6515 4505 2998 2155
09-18 64° 81° 8683 6556 4536 3021 2173
09-19 66° 76° 8732 6595 4565 3042 2189
09-20 62° 85° 8784 6637 4597 3066 2208
09-21 64° 87° 8838 6680 4630 3091 2228
09-22 66° 88° 8892 6725 4665 3118 2250
2017Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-23 62° 89° 8946 6768 4698 3143 2270
09-24 60° 89° 8998 6811 4731 3168 2290
09-25 61° 87° 9051 6853 4763 3192 2309
09-26 61° 88° 9103 6896 4796 3217 2329
09-27 61° 87° 9156 6938 4828 3241 2348
09-28 53° 72° 9196 6969 4848 3254 2356
09-29 46° 74° 9234 6997 4867 3264 2361
09-30 45° 67° 9268 7021 4881 3270 2362

 

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.