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Crabgrass/Annual Bluegrass Preemergence Timer (GDD 32)
through Wed, Apr. 24. 2024

 

GDD Total: 1099 (Base 32) through Wed, Apr. 24, 2024

  

Noblesville, IN

        

Forecast »

“Flashback” to 2023

4/18

4/19

4/20

4/21

4/22

4/23

4/24

4/25

4/26

4/27

4/28

4/29

4/30

Done

801

Late

500

Optimum

250

Early

171

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 33° 46° 17 7 0 0 0
02-16 22° 31° 22 7 0 0 0
02-17 14° 20° 22 7 0 0 0
02-18 14° 33° 23 7 0 0 0
02-19 16° 43° 31 7 0 0 0
02-20 25° 55° 49 15 0 0 0
02-21 35° 63° 76 32 7 0 0
02-22 41° 53° 101 47 12 0 0
02-23 34° 51° 121 58 12 0 0
02-24 24° 42° 132 59 12 0 0
02-25 27° 58° 153 70 13 0 0
02-26 35° 70° 184 91 24 3 0
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 57° 67° 225 121 45 15 7
02-28 26° 65° 248 135 48 15 7
02-29 19° 42° 256 135 48 15 7
03-01 27° 44° 270 138 48 15 7
03-02 39° 54° 295 153 53 15 7
03-03 39° 67° 326 174 64 18 7
03-04 53° 74° 367 205 85 31 16
03-05 50° 64° 402 230 100 38 17
03-06 44° 49° 426 245 104 38 17
03-07 43° 47° 450 258 108 38 17
03-08 45° 56° 478 276 116 39 17
03-09 38° 55° 503 291 121 39 17
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-10 31° 45° 519 297 121 39 17
03-11 25° 59° 539 307 121 39 17
03-12 41° 68° 571 329 134 44 17
03-13 47° 74° 610 358 152 54 23
03-14 54° 72° 651 389 173 67 31
03-15 43° 59° 679 407 182 68 31
03-16 36° 61° 706 424 188 68 31
03-17 33° 45° 723 431 188 68 31
03-18 29° 34° 733 431 188 68 31
03-19 27° 55° 752 440 188 68 31
03-20 30° 48° 768 447 188 68 31
03-21 26° 41° 779 448 188 68 31
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-22 31° 46° 796 455 188 68 31
03-23 30° 42° 810 459 188 68 31
03-24 29° 50° 828 467 188 68 31
03-25 41° 67° 860 488 200 72 31
03-26 40° 62° 889 508 209 73 31
03-27 34° 44° 906 515 209 73 31
03-28 28° 56° 926 524 209 73 31
03-29 37° 66° 956 544 219 75 31
03-30 52° 73° 996 575 240 87 38
03-31 42° 66° 1028 597 252 91 38
04-01 45° 58° 1057 616 261 93 38
04-02 43° 67° 1090 639 274 98 38
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-03 36° 42° 1107 646 274 98 38
04-04 35° 40° 1122 651 274 98 38
04-05 37° 45° 1141 660 274 98 38
04-06 30° 56° 1162 670 275 98 38
04-07 37° 61° 1189 688 282 98 38
04-08 46° 74° 1227 716 300 108 43
04-09 53° 71° 1267 746 320 120 51
04-10 52° 61° 1302 770 334 126 52
04-11 49° 58° 1333 791 346 129 52
04-12 47° 57° 1363 811 356 131 52
04-13 42° 66° 1395 833 367 135 52
04-14 56° 81° 1441 869 394 153 65
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-15 59° 72° 1484 903 417 169 75
04-16 56° 78° 1529 938 442 186 87
04-17 64° 71° 1575 974 468 204 100
04-18 48° 72° 1613 1002 486 214 105
04-19 48° 65° 1647 1026 500 220 107
04-20 40° 51° 1670 1039 503 220 107
04-21 35° 43° 1688 1046 503 220 107
04-22 35° 63° 1714 1063 510 220 107
04-23 48° 61° 1747 1085 523 224 107
04-24 41° 52° 1771 1099 527 224 107
04-25 34° 59° 1795 1114 531 224 107
04-26 41° 68° 1828 1136 543 229 107
2024Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-27 60° 77° 1874 1173 570 247 120
04-28 64° 82° 1925 1214 601 270 138
04-29 64° 74° 1972 1251 628 289 152
04-30 55° 71° 2013 1282 649 302 160
05-01 52° 77° 2056 1314 671 317 169
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-15 41° 63° 30 20 10 2 0
02-16 36° 56° 53 33 13 2 0
02-17 22° 33° 59 33 13 2 0
02-18 21° 47° 71 35 13 2 0
02-19 38° 56° 96 50 19 2 0
02-20 33° 55° 118 63 21 2 0
02-21 37° 45° 138 72 21 2 0
02-22 37° 56° 162 87 26 2 0
02-23 30° 63° 187 101 30 2 0
02-24 25° 37° 195 101 30 2 0
02-25 29° 43° 210 106 30 2 0
02-26 28° 55° 229 115 30 2 0
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
02-27 44° 63° 261 137 41 5 0
02-28 39° 49° 283 149 44 5 0
02-29 n/a n/a n/a n/a n/a n/a n/a
03-01 39° 70° 315 171 56 10 0
03-02 34° 49° 335 181 56 10 0
03-03 33° 41° 350 186 56 10 0
03-04 31° 52° 370 196 56 10 0
03-05 33° 55° 392 208 58 10 0
03-06 43° 72° 428 234 74 17 3
03-07 36° 49° 448 244 74 17 3
03-08 32° 49° 467 253 74 17 3
03-09 31° 50° 485 261 74 17 3
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-10 35° 40° 501 267 74 17 3
03-11 33° 44° 517 273 74 17 3
03-12 32° 36° 529 275 74 17 3
03-13 29° 35° 539 275 74 17 3
03-14 27° 36° 549 275 74 17 3
03-15 19° 49° 561 277 74 17 3
03-16 35° 56° 584 290 78 17 3
03-17 31° 52° 603 300 78 17 3
03-18 17° 29° 604 300 78 17 3
03-19 14° 36° 607 300 78 17 3
03-20 23° 50° 622 304 78 17 3
03-21 31° 52° 641 313 78 17 3
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
03-22 40° 53° 666 328 82 17 3
03-23 43° 61° 696 348 92 19 3
03-24 38° 43° 715 357 92 19 3
03-25 37° 49° 736 368 93 19 3
03-26 32° 64° 762 384 99 19 3
03-27 37° 51° 784 396 102 19 3
03-28 29° 49° 801 403 102 19 3
03-29 32° 52° 821 413 102 19 3
03-30 29° 60° 844 426 104 19 3
03-31 48° 64° 878 450 118 26 4
04-01 36° 59° 904 466 124 26 4
04-02 33° 54° 925 478 126 26 4
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-03 44° 70° 960 503 141 33 6
04-04 53° 75° 1003 535 163 47 15
04-05 46° 72° 1040 562 180 56 19
04-06 39° 50° 1062 574 183 56 19
04-07 34° 56° 1085 587 186 56 19
04-08 38° 60° 1112 604 192 56 19
04-09 37° 64° 1141 623 201 57 19
04-10 39° 68° 1172 644 213 60 19
04-11 40° 74° 1208 670 228 68 22
04-12 52° 78° 1250 703 251 83 32
04-13 47° 79° 1292 734 272 96 40
04-14 52° 78° 1335 767 295 111 50
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-15 59° 79° 1382 804 323 130 64
04-16 40° 69° 1415 827 335 135 64
04-17 35° 42° 1432 834 335 135 64
04-18 31° 60° 1455 847 339 135 64
04-19 41° 80° 1493 876 357 145 70
04-20 59° 83° 1542 915 386 166 86
04-21 46° 67° 1577 939 401 173 87
04-22 40° 49° 1600 952 404 173 87
04-23 35° 44° 1618 960 404 173 87
04-24 29° 51° 1636 968 404 173 87
04-25 38° 58° 1662 984 410 173 87
04-26 33° 58° 1686 998 413 173 87
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
04-27 35° 63° 1713 1015 420 173 87
04-28 44° 54° 1740 1032 427 173 87
04-29 41° 70° 1774 1056 441 179 88
04-30 40° 50° 1797 1069 444 179 88
05-01 39° 43° 1816 1078 444 179 88
05-02 41° 54° 1842 1094 450 179 88
05-03 40° 58° 1868 1110 456 179 88
05-04 36° 66° 1897 1129 465 180 88
05-05 44° 74° 1934 1156 482 189 92
05-06 54° 75° 1977 1189 505 204 102
05-07 61° 79° 2025 1227 533 224 117
05-08 60° 77° 2071 1264 559 242 130
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-09 52° 73° 2112 1294 580 255 138
05-10 48° 76° 2152 1324 600 267 145
05-11 52° 80° 2196 1358 624 282 156
05-12 64° 80° 2245 1397 653 304 172
05-13 65° 78° 2295 1437 683 326 189
05-14 61° 74° 2341 1473 709 344 202
05-15 52° 73° 2382 1504 730 356 210
05-16 57° 70° 2423 1535 751 370 218
05-17 52° 70° 2462 1564 770 380 224
05-18 42° 73° 2498 1590 786 388 227
05-19 50° 80° 2541 1623 809 403 237
05-20 52° 63° 2576 1648 824 411 239
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
05-21 44° 78° 2615 1677 843 422 245
05-22 51° 78° 2657 1709 865 436 254
05-23 54° 82° 2703 1745 891 454 267
05-24 56° 83° 2750 1783 918 473 281
05-25 47° 69° 2786 1808 934 481 284
05-26 46° 75° 2825 1837 953 492 290
05-27 49° 76° 2866 1868 974 504 298
05-28 58° 79° 2913 1905 1001 523 312
05-29 54° 86° 2960 1943 1029 543 327
05-30 61° 86° 3012 1984 1060 567 345
05-31 64° 87° 3066 2028 1094 592 366
06-01 63° 88° 3119 2071 1127 618 386
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-02 58° 90° 3172 2114 1160 642 406
06-03 64° 90° 3227 2159 1195 670 428
06-04 61° 83° 3277 2199 1225 692 445
06-05 51° 80° 3321 2233 1249 708 456
06-06 56° 84° 3368 2271 1277 727 471
06-07 60° 76° 3414 2307 1303 745 484
06-08 51° 77° 3456 2339 1325 759 493
06-09 49° 79° 3499 2371 1347 773 502
06-10 53° 83° 3545 2407 1373 791 515
06-11 60° 67° 3586 2439 1395 805 524
06-12 54° 64° 3624 2466 1412 814 528
06-13 53° 66° 3661 2493 1429 824 532
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-14 59° 74° 3705 2527 1453 840 543
06-15 56° 83° 3753 2565 1481 860 558
06-16 52° 70° 3792 2594 1500 871 564
06-17 52° 78° 3835 2627 1523 886 574
06-18 56° 81° 3882 2664 1550 904 588
06-19 65° 79° 3931 2703 1579 926 604
06-20 66° 84° 3985 2747 1613 951 625
06-21 65° 86° 4038 2790 1646 977 645
06-22 63° 76° 4086 2828 1674 996 660
06-23 67° 79° 4137 2869 1705 1019 678
06-24 63° 86° 4189 2911 1737 1044 697
06-25 68° 88° 4245 2957 1773 1072 720
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
06-26 65° 77° 4294 2996 1802 1092 736
06-27 61° 72° 4338 3030 1826 1109 747
06-28 52° 81° 4382 3064 1850 1125 758
06-29 64° 87° 4435 3108 1883 1150 778
06-30 63° 85° 4487 3150 1915 1174 797
07-01 69° 84° 4542 3194 1950 1201 819
07-02 69° 84° 4597 3239 1985 1227 841
07-03 68° 82° 4649 3282 2017 1252 860
07-04 63° 88° 4703 3325 2051 1278 881
07-05 68° 88° 4759 3371 2087 1306 904
07-06 70° 83° 4813 3415 2121 1332 925
07-07 62° 83° 4864 3456 2152 1355 943
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-08 63° 76° 4912 3494 2180 1374 958
07-09 59° 79° 4959 3531 2207 1394 972
07-10 59° 82° 5008 3570 2236 1414 988
07-11 63° 85° 5059 3612 2268 1438 1007
07-12 68° 86° 5114 3657 2302 1465 1028
07-13 67° 78° 5165 3697 2333 1488 1046
07-14 61° 87° 5217 3739 2365 1512 1065
07-15 68° 81° 5269 3782 2397 1536 1084
07-16 65° 83° 5321 3823 2429 1560 1103
07-17 64° 80° 5371 3863 2459 1582 1120
07-18 62° 79° 5419 3901 2487 1602 1135
07-19 58° 83° 5468 3940 2516 1623 1151
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
07-20 70° 85° 5524 3986 2552 1651 1174
07-21 63° 78° 5572 4025 2581 1671 1190
07-22 59° 82° 5621 4063 2609 1691 1205
07-23 59° 82° 5669 4101 2637 1712 1220
07-24 63° 84° 5721 4143 2669 1736 1239
07-25 61° 86° 5773 4185 2701 1759 1258
07-26 70° 87° 5829 4231 2737 1787 1281
07-27 74° 90° 5889 4281 2777 1820 1308
07-28 72° 90° 5948 4330 2816 1851 1334
07-29 69° 82° 6002 4374 2850 1876 1355
07-30 63° 83° 6053 4415 2881 1900 1373
07-31 58° 79° 6099 4452 2908 1918 1387
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-01 55° 81° 6146 4488 2934 1936 1400
08-02 60° 81° 6194 4526 2962 1957 1415
08-03 60° 84° 6245 4567 2993 1979 1433
08-04 60° 88° 6296 4609 3024 2003 1451
08-05 67° 84° 6350 4652 3058 2028 1472
08-06 67° 74° 6398 4690 3086 2049 1487
08-07 66° 73° 6446 4728 3114 2069 1502
08-08 61° 79° 6494 4766 3142 2089 1517
08-09 63° 80° 6544 4806 3172 2110 1534
08-10 66° 79° 6594 4846 3202 2133 1551
08-11 65° 82° 6646 4888 3234 2157 1570
08-12 68° 85° 6701 4933 3269 2183 1592
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-13 63° 83° 6752 4974 3300 2206 1610
08-14 66° 73° 6799 5011 3327 2226 1624
08-15 62° 70° 6843 5046 3352 2242 1636
08-16 55° 77° 6888 5080 3376 2258 1647
08-17 60° 75° 6933 5115 3401 2276 1659
08-18 54° 74° 6975 5147 3423 2290 1668
08-19 54° 78° 7019 5181 3447 2306 1679
08-20 63° 85° 7071 5223 3479 2330 1698
08-21 73° 89° 7130 5272 3518 2360 1724
08-22 69° 83° 7184 5316 3552 2387 1745
08-23 69° 89° 7241 5363 3589 2416 1769
08-24 77° 91° 7304 5416 3632 2450 1799
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
08-25 77° 89° 7364 5467 3673 2483 1827
08-26 69° 83° 7419 5511 3707 2509 1848
08-27 64° 75° 7466 5548 3734 2529 1862
08-28 54° 76° 7509 5581 3757 2544 1872
08-29 51° 79° 7552 5614 3780 2559 1882
08-30 56° 72° 7594 5646 3802 2572 1891
08-31 50° 73° 7634 5676 3822 2584 1898
09-01 51° 81° 7677 5710 3846 2600 1909
09-02 57° 87° 7727 5750 3876 2622 1926
09-03 69° 87° 7783 5795 3911 2650 1948
09-04 65° 88° 7838 5840 3946 2676 1970
09-05 70° 87° 7894 5886 3982 2705 1993
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-06 69° 83° 7948 5930 4016 2731 2014
09-07 65° 76° 7997 5969 4045 2751 2030
09-08 59° 71° 8040 6002 4068 2767 2040
09-09 61° 73° 8085 6037 4093 2784 2052
09-10 52° 76° 8127 6069 4115 2798 2061
09-11 54° 80° 8172 6104 4140 2815 2073
09-12 58° 72° 8215 6138 4164 2830 2084
09-13 46° 72° 8252 6165 4181 2839 2088
09-14 46° 74° 8290 6192 4198 2849 2092
09-15 47° 75° 8329 6221 4217 2860 2098
09-16 48° 72° 8367 6249 4235 2870 2103
09-17 50° 71° 8406 6278 4254 2880 2109
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-18 50° 70° 8443 6306 4272 2890 2114
09-19 47° 76° 8483 6335 4291 2902 2120
09-20 53° 81° 8528 6371 4316 2919 2132
09-21 61° 80° 8577 6409 4345 2940 2148
09-22 55° 81° 8623 6446 4371 2958 2161
09-23 52° 77° 8666 6478 4394 2973 2171
09-24 48° 81° 8708 6511 4417 2987 2181
09-25 53° 79° 8753 6545 4441 3003 2192
09-26 58° 74° 8797 6579 4465 3019 2203
09-27 61° 71° 8841 6613 4489 3036 2214
09-28 61° 71° 8885 6647 4513 3052 2225
09-29 58° 73° 8929 6681 4537 3067 2236
2023Lo
(F)		Hi
(F)		GDD
22		GDD
32		GDD
42		GDD
50		GDD
55
09-30 52° 80° 8973 6715 4561 3083 2247

 

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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