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 Sat, May. 9. 2026

 

GDD Total: 1418 (Base 32) through Sat, May. 9, 2026

  

Crown Point, IN

        

Forecast »

“Flashback” to 2025

5/3

5/4

5/5

5/6

5/7

5/8

5/9

5/10

5/11

5/12

5/13

5/14

5/15

Done

651

Over

501

Target

220

Close

121

Under

0

 

Generously Supported By:



Tabular Data

Daily GDD accumulation for various base temperature models in 2025 & 2026

2026Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-15 31° 60° 23 13 3 0 0
02-16 33° 64° 50 30 10 0 0
02-17 40° 58° 77 47 17 0 0
02-18 45° 65° 110 70 30 5 0
02-19 38° 57° 136 86 36 5 0
02-20 27° 49° 152 92 36 5 0
02-21 24° 30° 157 92 36 5 0
02-22 18° 25° 157 92 36 5 0
02-23 17° 24° 157 92 36 5 0
02-24 16° 37° 161 92 36 5 0
02-25 25° 39° 171 92 36 5 0
02-26 23° 43° 182 92 36 5 0
2026Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 26° 64° 205 105 39 5 0
02-28 28° 50° 222 112 39 5 0
03-01 25° 35° 230 112 39 5 0
03-02 24° 47° 244 116 39 5 0
03-03 33° 42° 259 121 39 5 0
03-04 35° 43° 276 128 39 5 0
03-05 42° 51° 301 143 43 5 0
03-06 47° 78° 341 173 64 18 8
03-07 39° 63° 371 193 73 19 8
03-08 34° 62° 397 209 79 19 8
03-09 47° 73° 435 237 97 29 13
03-10 47° 65° 469 261 111 35 13
2026Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-11 35° 63° 495 277 117 35 13
03-12 29° 45° 511 283 117 35 13
03-13 38° 48° 531 293 118 35 13
03-14 30° 37° 543 295 118 35 13
03-15 35° 64° 571 313 126 35 13
03-16 20° 35° 576 313 126 35 13
03-17 15° 24° 576 313 126 35 13
03-18 23° 48° 590 316 126 35 13
03-19 32° 64° 616 332 132 35 13
03-20 46° 75° 654 361 151 45 19
03-21 41° 67° 685 382 161 48 19
03-22 33° 67° 713 400 169 48 19
2026Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-23 29° 38° 725 401 169 48 19
03-24 25° 52° 741 408 169 48 19
03-25 40° 71° 775 431 183 53 19
03-26 37° 78° 810 457 198 61 21
03-27 32° 38° 823 460 198 61 21
03-28 28° 46° 839 465 198 61 21
03-29 39° 63° 868 484 207 62 21
03-30 52° 80° 911 518 231 77 32
03-31 40° 71° 945 541 244 83 32
04-01 39° 44° 964 550 244 83 32
04-02 39° 72° 997 574 257 88 33
04-03 44° 67° 1031 597 271 93 33
2026Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-04 42° 64° 1062 618 282 97 33
04-05 37° 51° 1084 631 284 97 33
04-06 38° 50° 1106 643 286 97 33
04-07 29° 42° 1120 647 286 97 33
04-08 34° 69° 1150 666 296 98 33
04-09 59° 67° 1191 697 317 111 41
04-10 42° 60° 1220 716 326 112 41
04-11 33° 59° 1244 730 330 112 41
04-12 55° 80° 1290 766 356 130 54
04-13 64° 81° 1340 806 386 152 71
04-14 59° 82° 1388 845 415 173 87
04-15 66° 74° 1436 883 443 193 102
2026Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-16 56° 71° 1478 915 465 207 110
04-17 48° 81° 1521 948 487 221 120
04-18 43° 67° 1554 971 500 226 120
04-19 35° 50° 1574 981 501 226 120
04-20 31° 55° 1595 992 502 226 120
04-21 46° 79° 1636 1022 522 239 128
04-22 53° 72° 1676 1053 543 251 135
04-23 51° 81° 1720 1087 567 267 146
04-24 60° 70° 1763 1120 590 282 156
04-25 42° 60° 1792 1139 599 284 156
04-26 39° 64° 1822 1159 609 285 156
04-27 52° 66° 1859 1186 626 294 160
2026Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-28 52° 62° 1894 1211 641 301 163
04-29 41° 56° 1921 1227 647 301 163
04-30 35° 56° 1944 1241 651 301 163
05-01 38° 48° 1965 1252 652 301 163
05-02 31° 54° 1986 1263 652 301 163
05-03 41° 63° 2016 1283 662 303 163
05-04 48° 79° 2057 1314 684 317 171
05-05 44° 59° 2087 1334 694 319 171
05-06 42° 56° 2114 1351 701 319 171
05-07 35° 58° 2139 1365 705 319 171
05-08 45° 65° 2172 1388 718 324 171
05-09 50° 74° 2211 1418 738 335 178
2026Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-10 43° 63° 2242 1439 749 338 178
05-11 43° 59° 2271 1458 758 339 178
05-12 39° 70° 2304 1481 771 344 178
05-13 50° 61° 2337 1504 784 349 178
05-14 42° 65° 2369 1526 796 353 178
05-15 48° 74° 2408 1555 815 364 184
05-16 55° 83° 2455 1592 842 383 198
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-15 25° 35° 8 0 0 0 0
02-16 15° 30° 9 0 0 0 0
02-17 0° 12° 9 0 0 0 0
02-18 -4° 14° 9 0 0 0 0
02-19 5° 19° 9 0 0 0 0
02-20 -1° 24° 9 0 0 0 0
02-21 9° 31° 9 0 0 0 0
02-22 12° 37° 11 0 0 0 0
02-23 21° 46° 23 2 0 0 0
02-24 35° 55° 45 15 3 0 0
02-25 34° 56° 69 28 6 0 0
02-26 32° 50° 87 36 6 0 0
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 33° 51° 107 46 6 0 0
02-28 29° 59° 129 59 8 0 0
03-01 19° 39° 136 59 8 0 0
03-02 14° 36° 140 59 8 0 0
03-03 27° 43° 152 61 8 0 0
03-04 41° 47° 175 74 10 0 0
03-05 28° 51° 193 82 10 0 0
03-06 26° 39° 203 82 10 0 0
03-07 30° 37° 215 84 10 0 0
03-08 31° 48° 232 91 10 0 0
03-09 31° 57° 254 103 12 0 0
03-10 36° 67° 283 122 21 1 0
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-11 35° 54° 306 135 24 1 0
03-12 33° 58° 329 148 28 1 0
03-13 30° 67° 356 165 34 1 0
03-14 45° 78° 395 194 54 13 6
03-15 49° 69° 432 221 71 22 11
03-16 30° 45° 448 227 71 22 11
03-17 24° 52° 464 233 71 22 11
03-18 44° 73° 500 259 88 30 14
03-19 37° 67° 530 279 98 32 14
03-20 31° 41° 544 283 98 32 14
03-21 29° 58° 566 295 99 32 14
03-22 33° 50° 585 304 99 32 14
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-23 32° 47° 603 312 99 32 14
03-24 34° 49° 622 321 99 32 14
03-25 28° 49° 638 327 99 32 14
03-26 28° 51° 656 335 99 32 14
03-27 39° 55° 681 350 104 32 14
03-28 47° 80° 723 382 126 46 23
03-29 58° 67° 763 412 146 58 30
03-30 49° 77° 804 443 167 72 38
03-31 33° 46° 822 451 167 72 38
04-01 29° 48° 839 458 167 72 38
04-02 39° 66° 869 478 178 74 38
04-03 44° 64° 901 500 190 78 38
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-04 39° 52° 924 513 193 78 38
04-05 41° 48° 947 526 195 78 38
04-06 36° 46° 966 535 195 78 38
04-07 30° 43° 980 539 195 78 38
04-08 25° 42° 992 541 195 78 38
04-09 31° 42° 1006 545 195 78 38
04-10 38° 47° 1027 556 196 78 38
04-11 33° 49° 1046 565 196 78 38
04-12 29° 60° 1069 578 198 78 38
04-13 50° 62° 1103 602 212 84 39
04-14 53° 63° 1139 628 228 92 42
04-15 40° 54° 1163 642 233 92 42
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-16 32° 51° 1183 652 233 92 42
04-17 36° 65° 1211 670 241 92 42
04-18 56° 80° 1258 707 267 110 55
04-19 44° 69° 1292 731 282 117 57
04-20 47° 66° 1327 756 297 124 59
04-21 50° 62° 1361 780 311 130 60
04-22 39° 73° 1395 804 325 136 61
04-23 51° 77° 1437 836 347 150 70
04-24 51° 79° 1480 869 370 165 80
04-25 44° 66° 1513 892 383 170 80
04-26 41° 51° 1537 906 387 170 80
04-27 32° 69° 1566 925 396 171 80
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-28 51° 82° 1610 959 420 187 91
04-29 52° 77° 1653 992 443 202 101
04-30 44° 65° 1685 1014 455 206 101
05-01 53° 71° 1725 1044 475 218 108
05-02 46° 61° 1757 1066 486 222 108
05-03 44° 54° 1784 1083 493 222 108
05-04 44° 50° 1808 1097 498 222 108
05-05 47° 63° 1842 1121 512 227 108
05-06 45° 75° 1880 1149 530 237 113
05-07 47° 75° 1919 1178 549 248 119
05-08 45° 61° 1950 1199 560 251 119
05-09 37° 62° 1978 1217 568 251 119
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-10 40° 74° 2013 1242 583 258 122
05-11 42° 76° 2050 1269 600 267 126
05-12 50° 81° 2093 1302 623 283 136
05-13 60° 78° 2141 1340 651 302 151
05-14 60° 79° 2188 1377 678 322 165
05-15 64° 92° 2244 1423 714 350 188
05-16 62° 87° 2296 1465 746 374 207
05-17 55° 71° 2337 1496 767 387 215
05-18 49° 62° 2371 1520 781 393 216
05-19 46° 59° 2402 1541 792 395 216
05-20 48° 58° 2433 1562 803 399 216
05-21 50° 55° 2463 1582 813 401 216
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-22 46° 55° 2492 1601 822 401 216
05-23 38° 61° 2519 1618 829 401 216
05-24 40° 66° 2550 1639 840 405 216
05-25 52° 65° 2587 1666 857 413 219
05-26 43° 70° 2621 1690 871 419 221
05-27 54° 71° 2662 1721 892 432 229
05-28 54° 60° 2697 1746 907 439 231
05-29 50° 69° 2735 1774 924 449 235
05-30 52° 74° 2776 1805 946 462 243
05-31 48° 65° 2810 1829 960 468 244
06-01 40° 67° 2841 1850 971 472 244
06-02 43° 83° 2882 1881 992 485 252
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-03 64° 88° 2937 1926 1027 511 274
06-04 57° 79° 2983 1962 1053 529 287
06-05 57° 66° 3022 1991 1072 540 293
06-06 61° 75° 3068 2027 1098 558 306
06-07 56° 78° 3113 2062 1123 575 318
06-08 62° 82° 3163 2102 1153 597 335
06-09 54° 76° 3206 2135 1176 613 345
06-10 52° 78° 3250 2169 1200 628 356
06-11 60° 89° 3302 2211 1232 652 375
06-12 64° 84° 3354 2253 1264 676 394
06-13 66° 74° 3402 2291 1292 696 409
06-14 64° 75° 3449 2328 1319 716 423
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-15 60° 82° 3499 2368 1348 737 440
06-16 62° 86° 3551 2410 1381 761 459
06-17 69° 91° 3609 2458 1419 791 484
06-18 68° 85° 3664 2503 1454 818 506
06-19 65° 81° 3715 2544 1485 841 524
06-20 66° 84° 3768 2587 1518 866 544
06-21 75° 93° 3830 2639 1560 900 573
06-22 78° 93° 3894 2693 1604 936 604
06-23 77° 94° 3957 2746 1647 971 634
06-24 76° 95° 4021 2800 1691 1007 665
06-25 71° 90° 4079 2848 1729 1038 690
06-26 74° 94° 4142 2901 1771 1072 720
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-27 74° 89° 4201 2950 1811 1104 746
06-28 68° 87° 4257 2996 1847 1131 769
06-29 71° 91° 4316 3045 1886 1162 795
06-30 73° 89° 4375 3094 1925 1193 821
07-01 70° 86° 4431 3140 1961 1221 844
07-02 65° 89° 4486 3185 1996 1248 866
07-03 68° 90° 4543 3232 2033 1277 890
07-04 70° 90° 4601 3280 2071 1307 915
07-05 72° 92° 4661 3330 2111 1339 942
07-06 70° 88° 4718 3377 2148 1369 966
07-07 66° 81° 4770 3419 2180 1392 985
07-08 62° 89° 4823 3462 2213 1418 1005
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-09 68° 82° 4876 3505 2246 1442 1025
07-10 64° 87° 4930 3549 2280 1468 1046
07-11 71° 90° 4989 3598 2319 1499 1072
07-12 72° 84° 5045 3644 2355 1527 1095
07-13 67° 83° 5098 3687 2388 1552 1115
07-14 60° 86° 5149 3728 2419 1575 1133
07-15 65° 92° 5205 3774 2455 1603 1156
07-16 72° 91° 5265 3824 2495 1635 1183
07-17 65° 75° 5313 3862 2523 1655 1198
07-18 59° 83° 5363 3902 2552 1677 1215
07-19 69° 82° 5416 3945 2586 1702 1235
07-20 69° 76° 5466 3985 2616 1724 1252
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-21 64° 83° 5518 4027 2648 1748 1271
07-22 64° 84° 5570 4069 2680 1772 1290
07-23 66° 91° 5626 4115 2716 1801 1313
07-24 74° 96° 5689 4168 2759 1836 1343
07-25 72° 82° 5745 4214 2795 1863 1366
07-26 71° 80° 5798 4257 2828 1888 1386
07-27 73° 87° 5856 4305 2866 1918 1411
07-28 76° 90° 5917 4356 2907 1951 1439
07-29 68° 92° 5975 4404 2945 1981 1464
07-30 70° 84° 6030 4449 2980 2009 1486
07-31 62° 75° 6077 4486 3007 2027 1500
08-01 57° 76° 6121 4520 3031 2044 1511
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-02 55° 77° 6165 4554 3055 2059 1522
08-03 55° 78° 6210 4589 3080 2076 1534
08-04 59° 82° 6258 4627 3108 2096 1549
08-05 58° 83° 6307 4666 3137 2117 1565
08-06 60° 86° 6358 4707 3167 2140 1583
08-07 68° 88° 6414 4753 3204 2168 1606
08-08 71° 89° 6472 4801 3242 2198 1631
08-09 70° 90° 6531 4850 3280 2229 1657
08-10 72° 90° 6590 4899 3320 2260 1683
08-11 72° 86° 6647 4946 3357 2289 1707
08-12 71° 90° 6706 4995 3396 2320 1733
08-13 68° 84° 6759 5038 3429 2346 1753
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-14 61° 84° 6810 5079 3460 2368 1771
08-15 64° 90° 6865 5124 3495 2395 1793
08-16 74° 93° 6927 5176 3537 2429 1822
08-17 70° 84° 6982 5221 3572 2456 1844
08-18 69° 84° 7036 5265 3606 2482 1865
08-19 70° 79° 7089 5308 3639 2507 1885
08-20 68° 74° 7138 5347 3667 2528 1901
08-21 59° 75° 7183 5382 3693 2545 1913
08-22 58° 79° 7229 5418 3719 2563 1926
08-23 64° 84° 7281 5460 3751 2587 1945
08-24 56° 73° 7324 5493 3773 2602 1955
08-25 53° 68° 7362 5521 3792 2612 1960
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-26 50° 71° 7401 5550 3811 2623 1966
08-27 48° 75° 7440 5579 3830 2634 1972
08-28 59° 75° 7485 5614 3855 2651 1984
08-29 49° 70° 7523 5642 3873 2661 1989
08-30 57° 73° 7566 5675 3895 2676 1999
08-31 50° 75° 7606 5705 3916 2688 2006
09-01 52° 77° 7649 5738 3939 2703 2016
09-02 53° 80° 7693 5772 3963 2719 2027
09-03 55° 76° 7737 5806 3986 2735 2038
09-04 50° 65° 7772 5831 4002 2742 2040
09-05 54° 68° 7811 5860 4021 2753 2046
09-06 44° 66° 7844 5883 4034 2758 2046
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-07 42° 67° 7877 5906 4046 2763 2046
09-08 41° 71° 7910 5929 4060 2768 2047
09-09 43° 76° 7948 5957 4078 2778 2051
09-10 56° 82° 7995 5994 4105 2797 2065
09-11 60° 82° 8043 6032 4133 2818 2081
09-12 53° 84° 8090 6069 4160 2836 2095
09-13 62° 75° 8137 6106 4186 2855 2108
09-14 61° 85° 8187 6146 4217 2877 2126
09-15 60° 84° 8237 6186 4247 2900 2143
09-16 57° 81° 8285 6224 4274 2919 2157
09-17 56° 84° 8332 6261 4302 2938 2172
09-18 56° 87° 8381 6300 4331 2960 2188
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-19 59° 89° 8434 6343 4363 2984 2207
09-20 65° 79° 8483 6382 4393 3005 2224
09-21 65° 84° 8535 6424 4425 3030 2243
09-22 64° 79° 8585 6464 4455 3051 2260
09-23 63° 75° 8632 6501 4482 3070 2274
09-24 63° 71° 8677 6536 4507 3087 2286
09-25 59° 72° 8721 6570 4531 3103 2296
09-26 51° 81° 8765 6604 4554 3119 2307
09-27 57° 85° 8814 6643 4584 3140 2323
09-28 57° 83° 8862 6681 4612 3160 2339
09-29 56° 88° 8912 6721 4642 3182 2356
09-30 57° 83° 8960 6759 4670 3202 2371
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55

 

Latest Updates

February 16th, 2026Welcome to the 2026 GDD Tracking Season

Although Punxsutawney Phil saw his shadow predicting six more weeks of winter, GDDTracker will start counting on February 15. Spring is when GDDTracker receives the most attention for alerting turfgrass managers of optimal application timing windows for suppressing annual bluegrass seedheads and crabgrass preemergence applications. As spring turns to summer, there are several models that may be helpful throughout the season including the early season dollar spot DMI timer and the Smith-Kerns dollar spot prediction model. To learn about all the available models, click on the "About" tab at the top of the screen. Thanks for your continued support and use of GDDTracker and best wishes for a successful 2026!


 

March 18th, 2024Timing crabgrass preemergence applications in spring

Don't miss this update from from Kevin Frank regarding timing of crabgrass preemergence herbicides.


 

 

© Copyright 2004-2026, Department of Crop and Soil Sciences, Michigan State University.
Weather data and programming assistance provided by Enviro-Weather and NWS
All Rights Reserved. Custom web development by Dynamite Inc.