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.

   
       


through Fri, Apr. 18. 2014

 
  

West Chicago, IL

       

Generously Supported By:





Tabular Data

Daily GDD accumulation for various base temperature models in 2013 & 2014

2014Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
02-19 25° 40° 18 1 0 0 0
02-20 32° 44° 34 7 0 0 0
02-21 25° 35° 42 7 0 0 0
02-22 19° 32° 46 7 0 0 0
02-23 12° 25° 46 7 0 0 0
02-24 22° 46 7 0 0 0
02-25 20° 46 7 0 0 0
02-26 -4° 15° 46 7 0 0 0
02-27 -13° 17° 46 7 0 0 0
02-28 -17° 27° 46 7 0 0 0
03-01 10° 27° 46 7 0 0 0
03-02 -1° 11° 46 7 0 0 0
2014Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-03 -12° 16° 46 7 0 0 0
03-04 24° 46 7 0 0 0
03-05 15° 22° 46 7 0 0 0
03-06 11° 29° 46 7 0 0 0
03-07 42° 48 7 0 0 0
03-08 35° 48 7 0 0 0
03-09 38° 48 7 0 0 0
03-10 38° 48° 70 18 1 0 0
03-11 31° 44° 85 23 1 0 0
03-12 34° 85 23 1 0 0
03-13 -2° 33° 85 23 1 0 0
03-14 35° 49° 105 34 1 0 0
2014Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-15 24° 37° 114 34 1 0 0
03-16 10° 27° 114 34 1 0 0
03-17 -1° 34° 114 34 1 0 0
03-18 29° 51° 132 41 1 0 0
03-19 34° 45° 149 49 1 0 0
03-20 31° 45° 165 55 1 0 0
03-21 31° 55° 186 65 2 0 0
03-22 31° 41° 200 69 2 0 0
03-23 18° 30° 202 69 2 0 0
03-24 17° 35° 206 69 2 0 0
03-25 20° 29° 209 69 2 0 0
03-26 37° 209 69 2 0 0
2014Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-27 34° 49° 228 78 2 0 0
03-28 34° 50° 248 89 2 0 0
03-29 30° 42° 262 93 2 0 0
03-30 21° 56° 279 99 2 0 0
03-31 41° 67° 311 121 14 4 0
04-01 31° 57° 333 133 16 4 0
04-02 32° 49° 351 142 16 4 0
04-03 35° 42° 368 148 16 4 0
04-04 35° 44° 385 156 16 4 0
04-05 31° 52° 405 165 16 4 0
04-06 27° 58° 425 176 17 4 0
04-07 31° 59° 449 189 20 4 0
2014Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-08 44° 61° 479 210 31 6 0
04-09 31° 63° 504 225 36 6 0
04-10 42° 65° 536 246 48 10 0
04-11 32° 70° 565 266 57 12 0
04-12 41° 80° 604 294 75 22 6
04-13 45° 68° 638 319 90 28 7
04-14 30° 63° 663 333 94 28 7
04-15 20° 37° 669 333 94 28 7
04-16 16° 53° 682 336 94 28 7
04-17 41° 61° 711 355 103 29 7
04-18 36° 59° 737 371 109 29 7
04-19 46° 65° 770 394 122 35 7
2014Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-20 39° 75° 805 419 137 41 9
04-21 38° 69° 836 440 149 45 9
04-22 44° 77° 875 469 167 55 15
04-23 45° 72° 912 496 184 64 18
04-24 34° 57° 935 509 187 64 18
04-25 31° 58° 958 522 190 64 18
2013Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
02-19 10° 32° 0 0 0 0 0
02-20 23° 0 0 0 0 0
02-21 13° 28° 0 0 0 0 0
02-22 23° 33° 6 0 0 0 0
02-23 19° 27° 7 0 0 0 0
02-24 12° 37° 10 0 0 0 0
02-25 19° 43° 19 0 0 0 0
02-26 31° 38° 31 3 0 0 0
02-27 32° 33° 42 3 0 0 0
02-28 27° 34° 50 3 0 0 0
03-01 23° 28° 54 3 0 0 0
03-02 12° 27° 54 3 0 0 0
2013Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-03 30° 54 3 0 0 0
03-04 13° 31° 54 3 0 0 0
03-05 28° 32° 62 3 0 0 0
03-06 27° 33° 69 3 0 0 0
03-07 25° 35° 77 3 0 0 0
03-08 16° 39° 83 3 0 0 0
03-09 29° 42° 96 6 0 0 0
03-10 39° 48° 118 18 2 0 0
03-11 32° 46° 135 25 2 0 0
03-12 28° 35° 144 25 2 0 0
03-13 22° 32° 149 25 2 0 0
03-14 22° 34° 156 25 2 0 0
2013Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-15 29° 40° 168 28 2 0 0
03-16 30° 34° 178 28 2 0 0
03-17 25° 35° 186 28 2 0 0
03-18 24° 35° 194 28 2 0 0
03-19 17° 31° 196 28 2 0 0
03-20 13° 25° 196 28 2 0 0
03-21 12° 32° 196 28 2 0 0
03-22 15° 37° 200 28 2 0 0
03-23 22° 42° 210 28 2 0 0
03-24 31° 36° 221 30 2 0 0
03-25 29° 36° 232 30 2 0 0
03-26 30° 42° 246 34 2 0 0
2013Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
03-27 31° 42° 261 39 2 0 0
03-28 25° 49° 276 44 2 0 0
03-29 31° 54° 296 54 2 0 0
03-30 30° 58° 318 66 4 0 0
03-31 35° 55° 341 80 7 0 0
04-01 29° 38° 353 81 7 0 0
04-02 25° 42° 364 83 7 0 0
04-03 24° 45° 377 86 7 0 0
04-04 27° 57° 397 96 7 0 0
04-05 33° 47° 415 103 7 0 0
04-06 35° 68° 445 123 17 2 0
04-07 39° 58° 471 139 23 2 0
2013Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-08 38° 64° 500 158 32 2 0
04-09 40° 54° 525 174 38 2 0
04-10 36° 42° 542 181 38 2 0
04-11 37° 46° 562 190 38 2 0
04-12 36° 44° 579 198 38 2 0
04-13 34° 43° 596 204 38 2 0
04-14 37° 67° 626 224 48 5 0
04-15 46° 65° 659 248 61 10 1
04-16 38° 55° 684 262 66 10 1
04-17 41° 46° 706 274 67 10 1
04-18 43° 62° 737 295 78 13 1
04-19 34° 42° 753 301 78 13 1
2013Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
04-20 29° 44° 767 306 78 13 1
04-21 30° 53° 787 315 78 13 1
04-22 38° 65° 817 335 88 15 1
04-23 38° 56° 842 350 93 15 1
04-24 36° 50° 863 361 94 15 1
04-25 40° 50° 885 374 97 15 1
04-26 35° 65° 914 392 105 15 1
04-27 43° 67° 946 415 118 20 1
04-28 52° 66° 984 442 135 29 5
04-29 50° 72° 1022 471 154 40 11
04-30 59° 84° 1072 510 183 61 27
05-01 60° 84° 1122 551 213 84 44
2013Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-02 44° 68° 1156 575 228 90 45
05-03 40° 52° 1180 589 231 90 45
05-04 48° 70° 1217 616 248 99 49
05-05 49° 71° 1255 643 266 108 54
05-06 52° 72° 1295 673 286 120 61
05-07 47° 77° 1335 703 306 132 68
05-08 48° 79° 1377 735 328 146 77
05-09 51° 76° 1418 766 349 159 85
05-10 44° 49° 1442 781 354 159 85
05-11 43° 58° 1471 799 362 160 85
05-12 36° 55° 1494 812 365 160 85
05-13 33° 63° 1520 829 371 160 85
2013Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-14 52° 89° 1569 867 400 180 100
05-15 67° 82° 1621 910 433 205 120
05-16 53° 83° 1668 946 459 223 133
05-17 56° 74° 1710 979 482 238 143
05-18 54° 81° 1756 1015 507 256 156
05-19 59° 88° 1808 1056 539 279 175
05-20 71° 89° 1866 1104 577 309 200
05-21 63° 80° 1915 1144 606 331 216
05-22 63° 71° 1960 1179 631 348 228
05-23 42° 60° 1990 1198 641 349 228
05-24 37° 59° 2016 1214 647 349 228
05-25 43° 59° 2045 1233 656 350 228
2013Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
05-26 42° 67° 2078 1256 669 355 228
05-27 53° 63° 2114 1282 685 363 231
05-28 56° 74° 2157 1315 708 378 241
05-29 63° 82° 2208 1356 739 401 259
05-30 64° 83° 2259 1398 771 425 278
05-31 63° 76° 2307 1435 798 444 293
06-01 63° 74° 2354 1472 825 463 306
06-02 49° 63° 2388 1496 839 469 307
06-03 41° 68° 2420 1519 852 474 307
06-04 49° 70° 2458 1547 870 484 312
06-05 54° 71° 2499 1577 890 496 320
06-06 53° 64° 2536 1604 907 505 323
2013Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-07 51° 69° 2573 1632 925 515 328
06-08 47° 74° 2612 1661 943 526 334
06-09 54° 81° 2657 1696 969 543 346
06-10 63° 77° 2705 1734 997 563 361
06-11 60° 82° 2754 1772 1025 583 377
06-12 66° 87° 2808 1817 1060 610 398
06-13 60° 75° 2854 1853 1085 628 411
06-14 53° 76° 2897 1885 1108 642 421
06-15 58° 80° 2944 1923 1135 662 435
06-16 68° 85° 2998 1967 1170 688 456
06-17 60° 87° 3050 2009 1201 712 475
06-18 55° 71° 3091 2040 1223 725 483
2013Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
06-19 51° 77° 3133 2072 1245 739 492
06-20 57° 87° 3183 2112 1274 761 509
06-21 66° 82° 3236 2154 1307 785 529
06-22 67° 80° 3287 2196 1338 809 547
06-23 65° 86° 3341 2239 1372 834 568
06-24 67° 84° 3394 2283 1405 860 588
06-25 68° 85° 3448 2327 1440 886 609
06-26 69° 80° 3501 2369 1472 910 629
06-27 65° 88° 3555 2414 1507 937 650
06-28 65° 81° 3607 2455 1538 960 669
06-29 64° 70° 3652 2490 1563 977 681
06-30 60° 78° 3699 2527 1590 996 695
2013Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-01 56° 76° 3743 2562 1614 1013 706
07-02 56° 72° 3785 2594 1636 1027 715
07-03 60° 70° 3828 2626 1659 1041 725
07-04 56° 84° 3876 2664 1687 1061 740
07-05 61° 86° 3927 2705 1718 1084 758
07-06 62° 85° 3979 2747 1750 1108 777
07-07 68° 88° 4035 2793 1786 1136 800
07-08 71° 86° 4091 2840 1822 1165 823
07-09 72° 84° 4147 2885 1858 1192 846
07-10 67° 83° 4200 2929 1891 1218 866
07-11 60° 80° 4248 2967 1919 1238 881
07-12 56° 83° 4296 3005 1947 1258 896
2013Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-13 60° 84° 4346 3045 1977 1280 913
07-14 67° 88° 4402 3090 2013 1307 936
07-15 69° 90° 4460 3138 2051 1337 961
07-16 73° 91° 4520 3188 2091 1369 988
07-17 73° 93° 4581 3239 2132 1402 1016
07-18 74° 93° 4642 3291 2174 1436 1044
07-19 77° 94° 4706 3344 2217 1471 1075
07-20 67° 87° 4761 3389 2252 1498 1097
07-21 64° 87° 4815 3433 2286 1524 1118
07-22 67° 86° 4869 3478 2320 1551 1139
07-23 63° 78° 4918 3516 2349 1571 1154
07-24 54° 73° 4959 3547 2370 1584 1163
2013Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
07-25 53° 80° 5004 3582 2395 1601 1174
07-26 63° 72° 5049 3618 2420 1619 1187
07-27 56° 65° 5088 3646 2439 1629 1193
07-28 53° 68° 5126 3675 2457 1640 1198
07-29 53° 75° 5168 3707 2479 1654 1207
07-30 55° 74° 5211 3739 2502 1668 1217
07-31 64° 75° 5258 3776 2529 1687 1231
08-01 59° 79° 5305 3813 2556 1706 1245
08-02 62° 85° 5357 3855 2588 1730 1264
08-03 62° 79° 5405 3894 2616 1751 1279
08-04 57° 76° 5450 3928 2641 1767 1291
08-05 56° 72° 5492 3960 2663 1781 1300
2013Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-06 66° 81° 5543 4002 2695 1805 1318
08-07 69° 89° 5600 4048 2731 1833 1342
08-08 62° 78° 5648 4086 2759 1853 1357
08-09 57° 81° 5695 4123 2786 1872 1371
08-10 60° 81° 5743 4162 2814 1893 1386
08-11 57° 81° 5791 4199 2842 1912 1400
08-12 67° 82° 5843 4242 2874 1937 1420
08-13 57° 70° 5885 4274 2896 1951 1429
08-14 50° 72° 5925 4303 2916 1962 1435
08-15 52° 75° 5966 4334 2937 1975 1444
08-16 56° 82° 6013 4371 2964 1994 1458
08-17 54° 82° 6059 4407 2990 2012 1470
2013Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-18 54° 83° 6105 4443 3016 2030 1484
08-19 56° 84° 6153 4482 3044 2051 1499
08-20 62° 87° 6206 4524 3077 2075 1518
08-21 64° 90° 6261 4569 3112 2102 1541
08-22 66° 77° 6310 4608 3141 2123 1557
08-23 58° 81° 6357 4646 3169 2143 1571
08-24 56° 84° 6405 4684 3197 2163 1586
08-25 62° 88° 6459 4727 3230 2188 1606
08-26 66° 91° 6515 4773 3266 2216 1630
08-27 73° 94° 6577 4825 3308 2250 1659
08-28 70° 84° 6632 4870 3343 2277 1681
08-29 69° 89° 6689 4917 3380 2306 1705
2013Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
08-30 66° 96° 6748 4966 3419 2337 1731
08-31 68° 75° 6798 5006 3449 2359 1748
09-01 61° 83° 6848 5046 3479 2381 1765
09-02 62° 77° 6896 5084 3507 2401 1779
09-03 53° 75° 6937 5116 3529 2415 1788
09-04 54° 81° 6983 5151 3554 2432 1801
09-05 59° 75° 7027 5186 3579 2449 1812
09-06 54° 85° 7075 5223 3606 2468 1827
09-07 63° 87° 7128 5266 3639 2493 1847
09-08 70° 76° 7179 5307 3670 2516 1865
09-09 66° 92° 7236 5354 3707 2545 1889
09-10 74° 94° 7298 5406 3749 2579 1918
2013Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-11 71° 87° 7355 5453 3786 2608 1942
09-12 62° 80° 7404 5492 3815 2629 1957
09-13 48° 68° 7440 5518 3831 2637 1961
09-14 43° 71° 7475 5543 3846 2644 1963
09-15 53° 59° 7509 5567 3860 2650 1964
09-16 47° 65° 7543 5591 3874 2656 1965
09-17 46° 71° 7579 5617 3890 2664 1968
09-18 57° 80° 7626 5654 3917 2683 1982
09-19 67° 85° 7680 5698 3951 2709 2003
09-20 58° 75° 7724 5733 3976 2726 2014
09-21 49° 65° 7760 5758 3991 2733 2017
09-22 43° 67° 7793 5781 4004 2738 2017
2013Lo
(F)
Hi
(F)
GDD
22
GDD
32
GDD
42
GDD
50
GDD
55
09-23 45° 68° 7828 5806 4019 2745 2018
09-24 47° 71° 7864 5833 4036 2754 2022
09-25 47° 71° 7901 5860 4052 2763 2026
09-26 45° 77° 7940 5889 4072 2774 2032
09-27 50° 81° 7984 5922 4095 2789 2043
09-28 53° 83° 8030 5959 4121 2808 2056
09-29 51° 68° 8068 5986 4139 2817 2061
09-30 44° 74° 8105 6013 4156 2826 2065

 

Latest Updates

March 2nd, 2014Ready, Set... Reset, Go!

The GDD totals were mistakenly reset on Jan 3rd instead of Feb 15th. This has been corrected. Some alerts may be resent due to the change. Thank you!
 

April 9th, 2013GDDTracker Expands Coverage

With initial funding provided by the Michigan State University and the Michigan Turfgrass Foundation, GDDTracker has been helping turf managers schedule Poa annua seedhead suppression applications throughout the Great Lakes states since 2004. Over the last couple years we've been considering several strategies for expanding the geographical reach of GDDTracker beyond our base region. After much consideration we have decided to expand coverage from Colorado to the atlantic coast. Historically the models we've used to schedule PGR applications to suppress Poa seedheads in our region have been successful but as we move outside of our immediate comfort zone users should keep in mind that the ultimate combination of personal observations, experience, and GDD models should all be considered when scheduling applications. Although GDDTracker started as a guide for scheduling PGR applications for Poa seedhead suppression, over the years we have added models for crabgrass preemergence, spring broadleaf, and others. As GDDTracker grows we will continue to move forward with additional models. We hope you find GDDTracker useful for your operation and as always your feedback is always encouraged.