Growing Degree Days

​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​January 1 to July 14, 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
1719
1595
1424
1859
2873
1578
1382
2351
2916
2953
Lone Rock1561
1456
1661
2642
1375
1189
2100
2671
2744
​​Beloit
​1669
1475
1396
1802
2784
1540
1349
2277
2827
2851
Sullivan
1501
1390
1616
2555
1359
1174
2060
2597
2654
Madison
​1517
1444
1390
1640
2582
1381
1195
2098
2632
2693
Juneau
1449
1356
1557
2483
1299
1115
1993
2524
2596
Racine1498
1262
1630
2569
1384
1195
2106
2620
2674
Waukesha1442
1314
1558
2482
1307
1118
2011
2535
2600
Milwaukee
1474
1330
1245
1600
2531
1352
1162
2072
2581
2632
Hartford
1379
1310
1227
1492
2399
1243
1060
1932
2450
2522
Appleton1379
1337
1249
1492
2399
1240
1058
1931
2452
2526
Green Bay1358
1311
1214
1465
2367
1208
1028
1897
2415
2483
Big Flats​
1379
1318

1452
2397
1164
991
1842
2407
2523
Ha​ncock​1300
1284
1276
1377
2296
1103
930
1769
2314
2428
P​t Edwards1293
1276
1364
2293
1083
914
1756
2308
2428
La Crosse1483
1482
1526
1596
2564
1324
1141
2042
2606
2695
Eau Claire1370
1436
1332
1459
2387
1185
1016
1876
2419
2517
Cumberland
1143
1187
1173
1217
2073
961
805
1602
2105
2233
Bayfield898
1000
939
1716
698
571
1247
1724
1872
Wausau1121
1147
1209
1188
2055
927
768
1567
2080
2208
Medford
1087
1098
1101
1146
2000
884
728
1513
2024
2163
Crivitz1189
1189
1238
2116
957
802
1592
2119
2234
Crandon974
1054
1023
1843
769
626
1351
1849
2003
​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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