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Japanese Beetle Adults Emerge, Breed and Feed (GDD 50)
through Tue, Mar. 31. 2026

 

GDD Total: 29 (Base 50) through Tue, Mar. 31, 2026

  

Emmett, MI

        

Forecast »

“Flashback” to 2025

3/28

3/29

3/30

3/31

4/1

4/2

4/3

4/4

4/5

4/6

4/7

4/8

4/9

Done

2701

Over

2151

Adult Emergence

950

Close

751

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 30° 46° 16 6 0 0 0
02-16 23° 52° 32 12 0 0 0
02-17 30° 44° 46 16 0 0 0
02-18 33° 40° 61 21 0 0 0
02-19 34° 40° 76 26 0 0 0
02-20 33° 43° 92 32 0 0 0
02-21 31° 36° 104 34 0 0 0
02-22 28° 31° 111 34 0 0 0
02-23 13° 29° 111 34 0 0 0
02-24 9° 29° 111 34 0 0 0
02-25 16° 33° 114 34 0 0 0
02-26 12° 31° 114 34 0 0 0
2026Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 26° 55° 132 42 0 0 0
02-28 22° 48° 146 46 0 0 0
03-01 10° 22° 146 46 0 0 0
03-02 9° 32° 146 46 0 0 0
03-03 19° 40° 153 46 0 0 0
03-04 25° 49° 168 51 0 0 0
03-05 33° 41° 184 56 0 0 0
03-06 35° 52° 205 67 1 0 0
03-07 45° 67° 239 91 15 6 1
03-08 40° 60° 267 109 23 6 1
03-09 46° 72° 304 136 40 15 5
03-10 38° 57° 329 152 46 15 5
2026Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-11 32° 44° 345 157 46 15 5
03-12 28° 38° 356 159 46 15 5
03-13 27° 42° 369 161 46 15 5
03-14 27° 37° 379 161 46 15 5
03-15 28° 62° 402 175 49 15 5
03-16 19° 62° 421 183 49 15 5
03-17 17° 24° 421 183 49 15 5
03-18 17° 32° 423 183 49 15 5
03-19 31° 48° 440 190 49 15 5
03-20 30° 60° 463 203 52 15 5
03-21 33° 40° 478 208 52 15 5
03-22 33° 45° 495 214 52 15 5
2026Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-23 26° 34° 503 214 52 15 5
03-24 19° 45° 513 215 52 15 5
03-25 29° 55° 533 225 52 15 5
03-26 34° 60° 558 240 57 15 5
03-27 23° 34° 565 240 57 15 5
03-28 20° 40° 573 240 57 15 5
03-29 35° 55° 596 253 60 15 5
03-30 40° 72° 630 277 74 21 6
03-31 41° 76° 666 303 91 29 9
04-01 30° 38° 678 305 91 29 9
04-02 32° 54° 699 316 92 29 9
04-03 43° 64° 731 338 104 33 9
2026Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-04 36° 65° 760 357 112 34 9
04-05 36° 42° 777 364 112 34 9
04-06 29° 45° 792 369 112 34 9
04-07 23° 38° 800 369 112 34 9
04-08 23° 53° 816 375 112 34 9
04-09 44° 64° 848 397 124 38 9
04-10 41° 58° 876 414 132 38 9
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-15 19° 28° 2 0 0 0 0
02-16 19° 29° 4 0 0 0 0
02-17 -1° 18° 4 0 0 0 0
02-18 -3° 15° 4 0 0 0 0
02-19 1° 17° 4 0 0 0 0
02-20 13° 21° 4 0 0 0 0
02-21 18° 28° 5 0 0 0 0
02-22 16° 29° 5 0 0 0 0
02-23 18° 34° 10 0 0 0 0
02-24 25° 43° 22 2 0 0 0
02-25 35° 49° 42 12 0 0 0
02-26 31° 41° 56 16 0 0 0
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 34° 40° 71 22 0 0 0
02-28 30° 47° 88 28 0 0 0
03-01 17° 36° 92 28 0 0 0
03-02 17° 27° 92 28 0 0 0
03-03 19° 39° 99 28 0 0 0
03-04 33° 48° 118 37 0 0 0
03-05 40° 55° 143 52 6 0 0
03-06 23° 36° 151 52 6 0 0
03-07 27° 40° 162 54 6 0 0
03-08 20° 37° 169 54 6 0 0
03-09 31° 55° 190 65 7 0 0
03-10 33° 64° 216 81 13 0 0
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-11 29° 55° 236 91 13 0 0
03-12 29° 43° 250 95 13 0 0
03-13 26° 57° 270 105 13 0 0
03-14 34° 70° 300 125 23 2 0
03-15 50° 72° 339 154 42 13 6
03-16 30° 60° 362 167 45 13 6
03-17 27° 45° 376 171 45 13 6
03-18 35° 63° 403 188 52 13 6
03-19 52° 71° 443 218 72 25 13
03-20 31° 59° 466 231 75 25 13
03-21 24° 53° 482 237 75 25 13
03-22 26° 48° 497 242 75 25 13
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-23 19° 38° 503 242 75 25 13
03-24 34° 40° 518 247 75 25 13
03-25 31° 39° 531 250 75 25 13
03-26 25° 41° 543 251 75 25 13
03-27 23° 57° 561 259 75 25 13
03-28 34° 52° 582 271 76 25 13
03-29 42° 55° 609 287 83 25 13
03-30 43° 63° 640 309 94 28 13
03-31 33° 55° 662 320 96 28 13
04-01 27° 37° 672 320 96 28 13
04-02 31° 46° 688 327 96 28 13
04-03 43° 60° 718 347 105 29 13
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-04 33° 47° 736 355 105 29 13
04-05 37° 49° 757 366 106 29 13
04-06 31° 41° 771 370 106 29 13
04-07 28° 43° 785 374 106 29 13
04-08 24° 36° 793 374 106 29 13
04-09 22° 43° 803 374 106 29 13
04-10 32° 36° 815 376 106 29 13
04-11 31° 47° 833 384 106 29 13
04-12 29° 54° 853 393 106 29 13
04-13 36° 59° 878 409 112 29 13
04-14 44° 72° 915 435 128 38 16
04-15 38° 52° 937 448 131 38 16
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-16 34° 52° 958 459 132 38 16
04-17 27° 60° 980 471 134 38 16
04-18 48° 73° 1019 499 152 48 22
04-19 45° 66° 1052 523 166 54 23
04-20 33° 51° 1072 533 166 54 23
04-21 43° 73° 1108 559 182 62 26
04-22 42° 62° 1139 579 193 65 26
04-23 47° 68° 1174 605 208 72 28
04-24 48° 74° 1213 634 227 83 34
04-25 48° 76° 1253 664 247 95 41
04-26 40° 50° 1276 677 250 95 41
04-27 36° 60° 1302 693 256 95 41
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-28 45° 71° 1338 719 272 103 44
04-29 48° 83° 1381 752 295 118 54
04-30 37° 54° 1405 766 299 118 54
05-01 41° 64° 1436 787 310 121 54
05-02 46° 62° 1468 808 322 125 54
05-03 41° 48° 1490 821 324 125 54
05-04 36° 54° 1513 834 327 125 54
05-05 46° 63° 1546 857 340 129 54
05-06 51° 61° 1580 881 354 135 55
05-07 45° 69° 1615 906 369 142 57
05-08 36° 47° 1635 916 369 142 57
05-09 32° 61° 1659 930 373 142 57
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-10 43° 70° 1694 955 388 149 59
05-11 40° 64° 1725 976 399 152 59
05-12 43° 78° 1763 1004 417 162 65
05-13 60° 70° 1806 1037 440 177 75
05-14 62° 75° 1852 1073 466 195 88
05-15 58° 78° 1899 1109 493 214 101
05-16 61° 80° 1947 1148 521 234 117
05-17 56° 66° 1986 1177 540 245 123
05-18 48° 57° 2016 1197 551 248 123
05-19 40° 54° 2041 1212 556 248 123
05-20 36° 54° 2064 1225 558 248 123
05-21 47° 50° 2091 1242 565 248 123
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-22 47° 51° 2118 1259 572 248 123
05-23 41° 54° 2143 1274 577 248 123
05-24 43° 58° 2172 1293 586 248 123
05-25 39° 62° 2200 1311 594 249 123
05-26 40° 67° 2232 1333 606 252 123
05-27 47° 72° 2269 1360 624 262 127
05-28 50° 59° 2302 1383 636 266 127
05-29 54° 64° 2338 1409 652 275 131
05-30 53° 74° 2380 1441 674 288 140
05-31 46° 63° 2412 1463 686 293 140
06-01 40° 67° 2443 1484 697 296 140
06-02 41° 78° 2481 1512 715 305 144
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-03 55° 84° 2528 1549 742 325 158
06-04 61° 82° 2578 1589 772 346 175
06-05 56° 70° 2618 1619 792 359 183
06-06 53° 72° 2659 1650 813 371 190
06-07 52° 73° 2699 1680 833 384 198
06-08 55° 76° 2743 1714 857 399 208
06-09 59° 76° 2788 1749 882 417 220
06-10 52° 71° 2827 1778 902 428 227
06-11 51° 86° 2874 1815 928 446 240
06-12 58° 67° 2914 1845 948 459 248
06-13 53° 69° 2953 1874 967 470 254
06-14 53° 74° 2995 1906 989 483 262
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-15 53° 74° 3036 1937 1010 497 271
06-16 54° 81° 3081 1972 1036 514 283
06-17 61° 87° 3133 2014 1067 538 302
06-18 65° 74° 3181 2052 1095 557 316
06-19 59° 72° 3224 2085 1118 572 326
06-20 58° 76° 3269 2120 1143 589 338
06-21 65° 86° 3322 2163 1176 615 359
06-22 78° 92° 3385 2216 1219 650 389
06-23 75° 91° 3447 2268 1261 683 417
06-24 73° 88° 3505 2316 1299 714 443
06-25 64° 76° 3553 2354 1327 734 457
06-26 64° 84° 3605 2396 1359 758 476
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-27 67° 88° 3661 2442 1395 785 499
06-28 65° 74° 3708 2479 1423 805 514
06-29 58° 84° 3758 2519 1452 826 530
06-30 68° 82° 3811 2561 1485 851 550
07-01 69° 81° 3864 2604 1518 876 570
07-02 62° 85° 3915 2646 1549 899 588
07-03 62° 79° 3963 2684 1577 920 603
07-04 58° 85° 4013 2723 1607 941 620
07-05 69° 90° 4070 2771 1644 971 644
07-06 72° 92° 4130 2821 1684 1002 671
07-07 61° 75° 4176 2857 1710 1021 684
07-08 56° 80° 4222 2893 1736 1038 697
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-09 67° 80° 4273 2934 1767 1062 715
07-10 63° 80° 4323 2974 1797 1083 732
07-11 64° 81° 4373 3014 1827 1106 750
07-12 70° 86° 4429 3060 1864 1134 773
07-13 70° 85° 4485 3105 1899 1161 795
07-14 64° 83° 4536 3147 1930 1184 813
07-15 64° 85° 4588 3189 1962 1209 833
07-16 67° 83° 4642 3232 1996 1234 853
07-17 59° 74° 4686 3267 2020 1251 864
07-18 52° 73° 4726 3297 2040 1263 872
07-19 58° 79° 4772 3333 2066 1281 885
07-20 62° 77° 4820 3371 2094 1300 899
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-21 56° 72° 4862 3403 2116 1314 908
07-22 51° 77° 4904 3435 2138 1328 917
07-23 57° 83° 4952 3473 2166 1348 932
07-24 70° 93° 5011 3522 2205 1380 958
07-25 68° 79° 5063 3564 2237 1403 977
07-26 65° 81° 5114 3605 2268 1427 995
07-27 72° 87° 5172 3653 2306 1456 1020
07-28 69° 88° 5228 3699 2342 1485 1044
07-29 66° 86° 5283 3743 2377 1511 1065
07-30 64° 80° 5333 3784 2407 1533 1082
07-31 62° 73° 5378 3819 2432 1551 1094
08-01 55° 73° 5420 3851 2454 1565 1103
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-02 51° 75° 5461 3882 2475 1578 1112
08-03 56° 79° 5507 3917 2501 1595 1124
08-04 56° 79° 5552 3953 2526 1613 1137
08-05 60° 80° 5600 3991 2554 1633 1152
08-06 62° 83° 5651 4032 2585 1656 1170
08-07 65° 85° 5704 4075 2618 1681 1189
08-08 65° 87° 5758 4119 2653 1707 1211
08-09 70° 88° 5816 4167 2690 1736 1235
08-10 70° 91° 5874 4215 2728 1767 1260
08-11 70° 90° 5932 4263 2766 1796 1285
08-12 68° 86° 5987 4308 2801 1823 1307
08-13 67° 80° 6038 4349 2832 1847 1325
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-14 61° 81° 6087 4388 2861 1868 1341
08-15 61° 84° 6138 4429 2892 1890 1359
08-16 65° 87° 6192 4473 2926 1916 1380
08-17 59° 74° 6237 4508 2951 1933 1392
08-18 55° 76° 6280 4541 2974 1949 1402
08-19 60° 71° 6324 4575 2998 1964 1413
08-20 63° 69° 6368 4609 3022 1980 1424
08-21 61° 74° 6413 4644 3047 1998 1437
08-22 54° 79° 6458 4679 3072 2015 1448
08-23 64° 79° 6507 4718 3101 2036 1465
08-24 55° 75° 6550 4751 3125 2051 1475
08-25 53° 67° 6588 4779 3143 2061 1480
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-26 49° 67° 6624 4805 3158 2069 1483
08-27 46° 72° 6662 4832 3176 2078 1487
08-28 55° 67° 6700 4861 3194 2089 1492
08-29 46° 64° 6733 4884 3207 2094 1492
08-30 44° 69° 6768 4908 3222 2100 1494
08-31 46° 72° 6805 4936 3239 2109 1498
09-01 49° 74° 6844 4965 3258 2120 1504
09-02 52° 76° 6886 4997 3280 2135 1514
09-03 55° 79° 6931 5032 3305 2151 1525
09-04 52° 64° 6967 5058 3321 2159 1528
09-05 46° 70° 7003 5084 3337 2167 1531
09-06 50° 62° 7037 5108 3351 2174 1532
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-07 43° 66° 7069 5130 3363 2178 1532
09-08 41° 66° 7101 5152 3375 2181 1532
09-09 46° 74° 7139 5180 3393 2192 1538
09-10 49° 76° 7180 5210 3414 2204 1545
09-11 49° 76° 7220 5241 3434 2216 1552
09-12 53° 77° 7263 5274 3457 2231 1562
09-13 57° 76° 7307 5308 3481 2248 1573
09-14 51° 79° 7350 5341 3504 2263 1584
09-15 55° 79° 7396 5376 3530 2280 1596
09-16 51° 78° 7438 5409 3552 2295 1606
09-17 48° 80° 7480 5441 3574 2309 1615
09-18 53° 83° 7526 5477 3601 2327 1628
2025Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-19 57° 72° 7569 5510 3623 2341 1637
09-20 53° 75° 7611 5542 3645 2356 1646
09-21 54° 70° 7651 5572 3665 2367 1653
09-22 62° 75° 7697 5608 3691 2386 1667
09-23 59° 75° 7743 5644 3717 2403 1679
09-24 62° 71° 7787 5678 3741 2420 1690
09-25 59° 72° 7830 5711 3765 2435 1701
09-26 52° 78° 7873 5744 3788 2450 1711
09-27 58° 83° 7922 5783 3816 2471 1727
09-28 53° 74° 7964 5815 3838 2484 1735
09-29 46° 78° 8004 5845 3858 2496 1742
09-30 48° 75° 8043 5874 3877 2508 1749
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.


 

 

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