Growing Degree Days

​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​January 1 to December 15, 2024​​​​​​​​​

​Location​​
​Mod 50°F
Corn development, 
Codling moth, 
European corn borer​​
​2023 GDDs
Mod base 50F
​30-yr avg.

1991-2020


​Sine B48
Alfalfa weevil
​Mod B40
Onion maggot
​Simple B50
Flea beetles, Imported cabbageworm,​ Squash vine borer
​Simple B52
Colorado potato beetle, Corn rootworm adults
​​Simple B43
Cabbage maggot
​Sine B39
Seedcorn maggot
​​Mod B38
​Western bean cutworm
Dubuque IA
3696
3525
3070
4009
6017
3462
3054
5053
6139
6081
Lone Rock3361
3254
3601
5556
3037
2648
4542
5651
5674
​​Beloit
3535
3281
3091
3834
5814
3302
2901
4841
5924
5868
Sullivan
3320
3099
3593
5512
3069
2678
4561
5634
5639
Madison
3337
3224
3028
3631
5554
3111
2718
4627
5690
5705
Juneau
3212
3016
3469
5362
2941
2554
4418
5480
5519
Racine3405
3076
3718
5665
3205
2800
4764
5813
5831
Waukesha3225
3011

3505
5409
2987
2592
4491
5551
5589
Milwaukee3377
3168
2992
3683
5616
3174
2771
4717
5755
5753
Hartford
3127
2937
2725
3396
5269
2884
2498
4352
5399
5444
Appleton3131
2969
2814
3407
5277
2897
2514
4369
5419
5471
Green Bay3117
2924
2709
3386
5254
2867
2489
4337
5386
5419
Big Flats​
3085
2953
3294
5192
2739
2370
4172
5267
5354
Ha​ncock​2942
2844
2785
3150
5009
2609
2241
4020
5091
5195
P​t Edwards2943
2823
3150
5019
2605
2245
4024
5100
5205
La Crosse3311
3273
3297
3585
5522
3055
2670
4553
5645
5702
Eau Claire3134
3110
2878
3384
5257
2861
2492
4315
5370
5430
Cumberland
2677
2611
2883
4648
2374
2029
3747
4758
4909
Bayfield2257
2149
2570
2403
4048
1911
1604
3158
4132
4321
Wausau2567
2474
2628
2754
4524
2236
1893
3589
4612
4789
Medford2503
2396
2413
2670
4418
2149
1810
3489
4506
4702
Crivitz2748
2571
2890
4703
2327
1987
3679
4746
4842
Crandon2316
2225
2471
4160
1962
1642
3239
4230
4445
​Key​ to GDD calculation methods: Modified B50°F; 2023 Modified B50°F; 30-Year Average 1991-2020; Sine B48°F; Modified​ B40°F; Simple B50​​°F; Simple B52°F; Simple B43°F, Sine B39°F; Modified B38°F.   ​ ​ ​ ​ ​ ​ ​ ​ ​ 

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