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MSU Proxy/Primo Seedhead Timer (GDD 32)
through Thu, May. 16. 2024

 

GDD Total: 1652 (Base 32) through Thu, May. 16, 2024

  

Argonne, IL

        

Forecast »

“Flashback” to 2023

5/10

5/11

5/12

5/13

5/14

5/15

5/16

5/17

5/18

5/19

5/20

5/21

5/22

Done

651

Over

501

Target

220

Close

121

Under

0

 

Generously Supported By:



Tabular Data

Daily GDD accumulation for various base temperature models in 2024 & 2023

2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-15 32° 44° 16 6 0 0 0
02-16 27° 32° 23 6 0 0 0
02-17 12° 27° 23 6 0 0 0
02-18 21° 44° 34 6 0 0 0
02-19 22° 50° 47 10 0 0 0
02-20 27° 56° 67 20 0 0 0
02-21 43° 64° 99 41 11 3 0
02-22 44° 59° 128 61 21 5 0
02-23 27° 52° 146 68 21 5 0
02-24 20° 35° 151 68 21 5 0
02-25 31° 60° 174 81 24 5 0
02-26 38° 72° 207 104 37 10 0
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 53° 72° 248 135 58 23 8
02-28 22° 53° 263 141 58 23 8
02-29 18° 45° 273 141 58 23 8
03-01 27° 47° 288 145 58 23 8
03-02 34° 60° 312 160 63 23 8
03-03 43° 72° 348 186 78 30 10
03-04 52° 71° 388 215 98 42 17
03-05 40° 59° 415 233 106 42 17
03-06 37° 49° 437 245 107 42 17
03-07 35° 48° 456 254 107 42 17
03-08 42° 47° 479 267 110 42 17
03-09 33° 44° 496 273 110 42 17
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-10 30° 47° 512 280 110 42 17
03-11 28° 67° 538 295 115 42 17
03-12 44° 71° 573 321 131 49 19
03-13 47° 72° 610 348 148 59 24
03-14 45° 68° 645 372 162 65 25
03-15 38° 53° 668 385 165 65 25
03-16 39° 57° 694 401 171 65 25
03-17 32° 41° 708 406 171 65 25
03-18 26° 34° 716 406 171 65 25
03-19 28° 57° 737 417 172 65 25
03-20 29° 46° 753 422 172 65 25
03-21 27° 41° 765 424 172 65 25
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-22 32° 42° 780 429 172 65 25
03-23 30° 38° 792 431 172 65 25
03-24 31° 50° 810 440 172 65 25
03-25 46° 62° 842 462 184 69 25
03-26 35° 54° 864 474 186 69 25
03-27 29° 43° 878 478 186 69 25
03-28 30° 50° 896 485 186 69 25
03-29 33° 58° 919 499 189 69 25
03-30 42° 61° 949 519 199 71 25
03-31 38° 56° 974 533 204 71 25
04-01 42° 49° 997 547 207 71 25
04-02 36° 55° 1021 560 211 71 25
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-03 34° 37° 1034 564 211 71 25
04-04 36° 41° 1051 570 211 71 25
04-05 37° 47° 1071 580 211 71 25
04-06 31° 53° 1090 590 211 71 25
04-07 38° 53° 1114 604 215 71 25
04-08 47° 70° 1151 630 231 79 28
04-09 50° 61° 1184 654 245 84 29
04-10 42° 66° 1216 676 257 89 29
04-11 50° 59° 1249 698 269 93 29
04-12 48° 62° 1281 721 282 98 29
04-13 41° 72° 1316 746 297 104 30
04-14 61° 81° 1365 784 325 125 46
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-15 50° 69° 1403 812 343 135 51
04-16 55° 76° 1446 846 367 151 62
04-17 59° 68° 1488 877 388 164 70
04-18 46° 63° 1520 900 401 169 70
04-19 41° 56° 1547 916 408 169 70
04-20 35° 46° 1565 925 408 169 70
04-21 31° 48° 1583 932 408 169 70
04-22 38° 66° 1613 952 417 171 70
04-23 55° 62° 1649 979 434 179 73
04-24 36° 52° 1671 990 436 179 73
04-25 30° 60° 1694 1003 439 179 73
04-26 43° 59° 1723 1022 448 180 73
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-27 60° 76° 1769 1058 474 198 86
04-28 62° 74° 1815 1095 500 216 100
04-29 58° 69° 1857 1126 522 230 108
04-30 48° 74° 1896 1155 540 241 114
05-01 62° 75° 1942 1192 567 259 127
05-02 54° 78° 1986 1225 591 275 138
05-03 54° 68° 2025 1254 610 286 144
05-04 49° 80° 2067 1287 632 301 154
05-05 52° 65° 2104 1314 649 309 158
05-06 48° 74° 2143 1343 668 320 164
05-07 60° 75° 2189 1378 694 338 176
05-08 53° 80° 2234 1413 719 355 188
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-09 52° 66° 2271 1440 735 364 192
05-10 47° 66° 2305 1465 750 370 193
05-11 50° 70° 2343 1492 768 380 198
05-12 49° 82° 2386 1526 791 396 209
05-13 61° 79° 2435 1564 819 416 224
05-14 55° 66° 2473 1593 838 426 229
05-15 53° 69° 2512 1622 857 438 236
05-16 52° 72° 2552 1652 877 449 243
05-17 58° 79° 2599 1688 904 468 256
05-18 55° 83° 2646 1725 931 487 270
05-19 61° 84° 2696 1766 961 510 288
05-20 63° 86° 2749 1808 994 534 307
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-21 67° 83° 2802 1851 1027 559 327
05-22 59° 75° 2847 1886 1052 576 339
05-23 56° 77° 2891 1921 1076 593 351
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-15 35° 51° 21 11 1 0 0
02-16 25° 35° 29 11 1 0 0
02-17 19° 25° 29 11 1 0 0
02-18 24° 47° 42 14 1 0 0
02-19 39° 53° 66 28 5 0 0
02-20 27° 49° 82 34 5 0 0
02-21 25° 40° 93 35 5 0 0
02-22 33° 35° 105 37 5 0 0
02-23 27° 43° 118 40 5 0 0
02-24 18° 30° 120 40 5 0 0
02-25 25° 37° 129 40 5 0 0
02-26 27° 51° 146 47 5 0 0
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 39° 59° 173 64 12 0 0
02-28 38° 51° 195 76 14 0 0
02-29 n/a n/a n/a n/a n/a n/a n/a
03-01 37° 56° 220 91 19 0 0
03-02 33° 41° 235 96 19 0 0
03-03 32° 38° 248 99 19 0 0
03-04 28° 45° 263 104 19 0 0
03-05 31° 51° 281 112 19 0 0
03-06 42° 55° 308 129 25 0 0
03-07 35° 45° 326 137 25 0 0
03-08 34° 47° 345 146 25 0 0
03-09 35° 41° 361 152 25 0 0
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-10 33° 37° 374 155 25 0 0
03-11 33° 40° 388 159 25 0 0
03-12 31° 36° 400 161 25 0 0
03-13 29° 32° 409 161 25 0 0
03-14 22° 38° 417 161 25 0 0
03-15 22° 50° 431 165 25 0 0
03-16 40° 47° 452 176 27 0 0
03-17 27° 50° 468 183 27 0 0
03-18 12° 25° 468 183 27 0 0
03-19 16° 38° 473 183 27 0 0
03-20 27° 51° 490 189 27 0 0
03-21 34° 53° 512 201 29 0 0
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-22 39° 48° 533 213 30 0 0
03-23 37° 47° 554 223 30 0 0
03-24 35° 45° 571 231 30 0 0
03-25 34° 44° 588 238 30 0 0
03-26 32° 49° 607 246 30 0 0
03-27 31° 49° 624 254 30 0 0
03-28 27° 50° 641 260 30 0 0
03-29 30° 42° 655 264 30 0 0
03-30 25° 56° 673 273 30 0 0
03-31 53° 67° 711 301 49 10 5
04-01 35° 54° 734 314 51 10 5
04-02 30° 54° 754 324 51 10 5
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-03 42° 60° 783 343 60 11 5
04-04 45° 68° 818 367 75 18 7
04-05 39° 71° 850 390 88 22 7
04-06 31° 51° 869 399 88 22 7
04-07 33° 53° 890 409 88 22 7
04-08 36° 63° 918 427 96 22 7
04-09 41° 67° 950 449 108 26 7
04-10 45° 71° 986 475 124 34 10
04-11 47° 78° 1026 506 145 47 17
04-12 56° 81° 1073 542 171 65 31
04-13 54° 82° 1119 578 197 83 44
04-14 54° 82° 1165 614 223 102 57
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-15 62° 80° 1214 654 253 123 73
04-16 35° 69° 1245 674 263 125 73
04-17 31° 38° 1257 677 263 125 73
04-18 32° 57° 1280 689 265 125 73
04-19 42° 72° 1315 714 280 132 75
04-20 52° 79° 1358 748 304 148 85
04-21 43° 63° 1389 768 315 150 85
04-22 38° 47° 1410 779 315 150 85
04-23 34° 40° 1425 784 315 150 85
04-24 32° 54° 1445 794 316 150 85
04-25 35° 48° 1465 804 316 150 85
04-26 28° 52° 1483 812 316 150 85
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-27 33° 67° 1511 830 323 150 85
04-28 45° 63° 1543 852 335 154 85
04-29 40° 56° 1569 868 341 154 85
04-30 38° 45° 1589 878 341 154 85
05-01 40° 49° 1611 890 344 154 85
05-02 41° 55° 1637 906 350 154 85
05-03 37° 60° 1664 923 357 154 85
05-04 39° 72° 1697 947 370 160 86
05-05 52° 78° 1740 980 393 175 96
05-06 59° 79° 1787 1017 420 194 110
05-07 63° 86° 1840 1059 453 219 130
05-08 52° 64° 1876 1086 469 227 133
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-09 46° 72° 1913 1112 486 236 137
05-10 48° 80° 1955 1144 508 250 146
05-11 55° 84° 2003 1182 536 269 160
05-12 64° 78° 2052 1221 565 290 176
05-13 58° 71° 2094 1253 587 305 186
05-14 55° 69° 2134 1283 607 316 192
05-15 52° 70° 2173 1312 626 328 199
05-16 51° 79° 2216 1345 649 343 209
05-17 47° 65° 2250 1369 663 349 210
05-18 43° 76° 2287 1397 680 358 214
05-19 59° 72° 2331 1431 704 374 225
05-20 47° 71° 2368 1458 721 383 229
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-21 50° 80° 2411 1490 744 398 239
05-22 54° 80° 2456 1526 769 415 251
05-23 58° 85° 2506 1565 799 437 268
05-24 55° 72° 2548 1597 820 450 276
05-25 49° 63° 2581 1621 834 456 277
05-26 44° 71° 2617 1646 850 463 279
05-27 45° 75° 2655 1674 867 473 284
05-28 55° 79° 2699 1709 892 490 296
05-29 54° 85° 2747 1746 920 510 311
05-30 60° 90° 2800 1789 953 535 331
05-31 70° 87° 2856 1836 989 563 354
06-01 67° 90° 2913 1882 1026 592 378
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-02 67° 92° 2970 1930 1063 621 402
06-03 67° 90° 3027 1976 1100 649 425
06-04 64° 78° 3076 2015 1129 671 442
06-05 54° 85° 3123 2053 1156 690 456
06-06 62° 82° 3173 2093 1186 712 473
06-07 59° 76° 3219 2128 1212 729 485
06-08 51° 75° 3260 2159 1233 743 494
06-09 50° 81° 3304 2193 1257 758 504
06-10 58° 85° 3353 2233 1286 780 521
06-11 52° 73° 3394 2263 1307 792 528
06-12 50° 70° 3431 2291 1324 802 533
06-13 55° 65° 3469 2319 1342 812 538
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-14 58° 76° 3515 2354 1368 830 551
06-15 54° 83° 3561 2391 1394 848 564
06-16 50° 69° 3599 2419 1412 858 569
06-17 50° 82° 3643 2453 1436 874 580
06-18 59° 86° 3694 2493 1467 897 598
06-19 63° 87° 3747 2537 1500 922 618
06-20 61° 86° 3799 2578 1532 946 637
06-21 64° 90° 3854 2623 1567 972 658
06-22 69° 87° 3909 2669 1602 1000 681
06-23 65° 87° 3963 2712 1636 1026 702
06-24 63° 92° 4019 2758 1672 1054 725
06-25 68° 85° 4073 2803 1706 1080 746
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-26 67° 71° 4121 2840 1733 1099 760
06-27 64° 78° 4169 2879 1762 1120 776
06-28 56° 85° 4218 2917 1791 1141 792
06-29 71° 86° 4275 2964 1828 1170 816
06-30 68° 86° 4330 3009 1863 1197 838
07-01 70° 84° 4385 3054 1898 1224 860
07-02 67° 73° 4433 3092 1926 1244 875
07-03 63° 86° 4486 3135 1958 1268 894
07-04 68° 91° 4543 3182 1996 1298 919
07-05 71° 91° 4602 3231 2035 1328 944
07-06 68° 81° 4654 3274 2067 1353 964
07-07 62° 82° 4704 3314 2097 1375 981
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-08 63° 72° 4750 3349 2123 1393 994
07-09 59° 82° 4799 3388 2152 1414 1010
07-10 61° 84° 4850 3429 2183 1436 1027
07-11 67° 89° 4905 3475 2218 1464 1050
07-12 61° 78° 4953 3512 2246 1484 1065
07-13 63° 75° 5000 3549 2273 1502 1078
07-14 67° 88° 5055 3595 2308 1530 1101
07-15 69° 83° 5109 3638 2342 1556 1122
07-16 65° 79° 5159 3678 2372 1578 1139
07-17 64° 79° 5208 3718 2401 1599 1155
07-18 58° 80° 5255 3754 2428 1618 1169
07-19 59° 84° 5304 3794 2457 1639 1185
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-20 69° 84° 5359 3838 2492 1666 1207
07-21 64° 80° 5409 3879 2522 1688 1224
07-22 61° 87° 5461 3921 2554 1712 1243
07-23 63° 82° 5512 3962 2585 1735 1261
07-24 65° 88° 5566 4006 2619 1761 1282
07-25 65° 88° 5621 4050 2654 1788 1304
07-26 74° 89° 5681 4100 2694 1819 1330
07-27 71° 93° 5741 4150 2733 1851 1357
07-28 72° 93° 5801 4200 2774 1884 1385
07-29 69° 83° 5855 4244 2808 1909 1405
07-30 64° 81° 5905 4284 2838 1932 1423
07-31 61° 82° 5954 4324 2867 1953 1439
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-01 66° 83° 6007 4366 2900 1978 1459
08-02 65° 82° 6059 4408 2932 2001 1477
08-03 66° 86° 6113 4452 2966 2028 1499
08-04 66° 86° 6167 4496 3000 2054 1520
08-05 68° 74° 6216 4536 3029 2075 1536
08-06 65° 72° 6263 4572 3056 2093 1549
08-07 67° 77° 6313 4612 3085 2115 1566
08-08 60° 82° 6361 4651 3114 2136 1582
08-09 62° 78° 6409 4689 3142 2156 1597
08-10 63° 83° 6461 4730 3174 2179 1615
08-11 67° 83° 6514 4773 3207 2205 1636
08-12 69° 85° 6569 4818 3242 2231 1657
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-13 63° 80° 6618 4857 3271 2253 1674
08-14 64° 73° 6665 4894 3298 2271 1687
08-15 62° 75° 6711 4931 3324 2290 1701
08-16 55° 79° 6757 4966 3350 2307 1713
08-17 64° 78° 6806 5005 3379 2328 1729
08-18 55° 77° 6850 5039 3402 2344 1740
08-19 58° 81° 6898 5077 3430 2364 1755
08-20 70° 92° 6957 5126 3470 2395 1781
08-21 70° 85° 7012 5171 3505 2423 1804
08-22 66° 89° 7068 5217 3540 2450 1826
08-23 75° 96° 7131 5270 3584 2486 1857
08-24 78° 97° 7197 5326 3630 2524 1890
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-25 71° 83° 7252 5371 3665 2551 1912
08-26 67° 75° 7301 5411 3694 2572 1928
08-27 62° 76° 7348 5448 3721 2591 1942
08-28 55° 80° 7394 5483 3747 2609 1955
08-29 60° 84° 7444 5523 3777 2631 1972
08-30 58° 71° 7486 5555 3799 2645 1981
08-31 49° 78° 7528 5587 3821 2658 1989
09-01 55° 83° 7574 5624 3847 2677 2003
09-02 59° 87° 7625 5664 3878 2700 2021
09-03 66° 91° 7682 5711 3915 2728 2044
09-04 69° 91° 7740 5759 3953 2758 2069
09-05 73° 88° 7798 5807 3991 2789 2095
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-06 68° 76° 7848 5847 4021 2811 2112
09-07 65° 70° 7893 5883 4046 2828 2124
09-08 60° 66° 7935 5914 4068 2841 2132
09-09 53° 72° 7976 5945 4089 2854 2140
09-10 50° 80° 8018 5978 4111 2869 2150
09-11 61° 68° 8061 6010 4134 2884 2160
09-12 54° 69° 8100 6040 4153 2895 2166
09-13 51° 68° 8138 6067 4171 2905 2171
09-14 48° 71° 8176 6095 4189 2914 2175
09-15 49° 76° 8216 6126 4209 2927 2183
09-16 56° 69° 8257 6156 4230 2940 2191
09-17 57° 66° 8297 6186 4250 2951 2197
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-18 51° 70° 8335 6214 4268 2962 2203
09-19 55° 65° 8373 6242 4286 2972 2208
09-20 59° 79° 8420 6279 4313 2991 2222
09-21 64° 75° 8467 6317 4340 3010 2236
09-22 64° 77° 8516 6355 4369 3031 2252
09-23 62° 79° 8564 6394 4397 3051 2267
09-24 55° 78° 8609 6429 4422 3068 2279
09-25 62° 75° 8656 6465 4449 3086 2292
09-26 63° 74° 8702 6501 4475 3105 2306
09-27 62° 70° 8746 6536 4499 3121 2317
09-28 61° 68° 8789 6568 4522 3136 2327
09-29 54° 74° 8831 6600 4544 3150 2336
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-30 58° 82° 8879 6638 4572 3170 2351

 

Latest Updates

March 18th, 2024Timing crabgrass preemergence applications in spring

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


 

February 12th, 2024Welcome to the 2024 GDD Tracking Season

2024 might be the year that if you blinked you missed winter. We've already experienced some very unseasonably warm weather in February with temperatures in the 60's. Temperatures are remaining relatively mild but I wouldn't be surprised if winter resurfaced yet as we move through the rest of February and March. GDDTracker starts counting on February 15. Spring is typically the time of year when GDDTracker receives the most attention for alerting turfgrass managers of optimal application timing windows for suppressing annual bluegrass seedheads and crabgrass preemergence applications. However, there are many models you may find helpful throughout the season including the early season DMI timer and 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 fantastic 2024!
 

 

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