Growing Degree Days

​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​January 1 to November 2, 2025​​​​​​​​​

​Location​​
​Mod 50°F
Corn development, 
Codling moth, 
European corn borer​​
​2024 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
3583
3636
3029
3896
5739
3417
3033
4873
5853
5703
Lone Rock3272
3307
3519
5300
3010
2650
4411
5392
5322
​​Beloit
3311
3475
3043
3587
5375
3101
2732
4515
5476
5365
Sullivan
3152
3267
3409
5147
2924
2572
4307
5251
5201
Madison
3200
3288
2987
3472
5220
2996
2636
4386
5342
5302
Juneau
3066
3166
3309
5031
2824
2482
4181
5127
5096
Racine3111
3341
3394
5152
2945
2597
4333
5257
5236
Waukesha3012
3176
3274
4988
2805
2462
4168
5108
5105
Milwaukee3052
3322
2946
3333
5065
2885
2541
4246
5167
5151
Hartford
2994
3084
2688
3246
4947
2774
2438
4125
5058
5045
Appleton2902
3093
2784
3158
4839
2708
2374
4026
4950
4960
Green Bay2926
3079
2680
3184
4872
2734
2401
4062
4975
4957
Big Flats​2926
3051

3141
4838
2646
2315
3970
4916
4935
Ha​ncock​2817
2910
2754
3033
4704
2553
2229
3846
4779
4806
P​t Edwards2859
2919
3077
4751
2596
2269
3899
4829
4842
La Crosse3278
3278
3256
3544
5311
3057
2695
4456
5430
5392
Eau Claire3040
3116
2847
3292
4995
2819
2482
4167
5103
5083
Cumberland
2615
2668
2550
2834
4446
2374
2058
3638
4552
4641
Bayfield2288
2248
2443
3952
1995
1705
3134
4011
4133
Wausau2506
2554
2606
2693
4272
2233
1927
3449
4354
4464
Medford2454
2492
2396
2633
4209
2176
1871
3392
4294
4418
​Crivitz
2604
2725
2764
4380
2274
1968
3495
4424
4471
Crandon2214
2309
2374
3887
1931
1638
3074
3952
4118
​Key​ to GDD calculation methods: Modified B50°F; 2024 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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