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Growing Degree Days
Content_Area1
January 1 to October 12, 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
3470
3466
2939
3774
5482
3332
2966
4696
5588
5413
Lone Rock
3172
3145
3418
5072
2948
2601
4271
5166
5064
Beloit
3206
3305
2944
3478
5135
3031
2677
4358
5231
5094
Sullivan
3068
3112
3319
4934
2867
2528
4171
5033
4957
Madison
3111
3134
2898
3377
5003
2933
2588
4244
5119
5052
Juneau
2984
3015
3223
4824
2769
2440
4055
4918
4858
Racine
3015
3167
3287
4905
2874
2544
4164
5002
4955
Waukesha
2936
3020
3188
4775
2749
2420
4030
4887
4858
Milwaukee
2964
3147
2851
3233
4831
2819
2492
4088
4923
4883
Hartford
2918
2937
2609
3163
4742
2721
2398
3996
4848
4810
Appleton
2821
2950
2712
3073
4628
2658
2337
3900
4737
4718
Green Bay
2843
2934
2612
3099
4659
2686
2366
3935
4760
4712
Big Flats
2856
2894
3070
4652
2605
2283
3870
4734
4719
Hancock
2749
2761
2683
2964
4521
2512
2197
3750
4602
4595
Pt Edwards
2792
2776
3010
4568
2559
2240
3803
4651
4631
La Crosse
3195
3116
3162
3456
5101
3006
2656
4322
5212
5148
Eau Claire
2975
2958
2777
3223
4806
2784
2455
4055
4910
4862
Cumberland
2568
2544
2498
2786
4293
2354
2046
3558
4398
4458
Bayfield
2240
2129
2401
3819
1980
1694
3080
3886
3976
Wausau
2452
2434
2550
2640
4108
2205
1907
3375
4199
4274
Medford
2405
2371
2346
2583
4054
2149
1852
3316
4144
4235
Crivitz
2527
2589
2693
4187
2237
1937
3412
4247
4253
Crandon
2167
2194
2328
3745
1905
1617
3020
3824
3951
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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