Historical Climate Data

Growing Season Summary
Station: 473038 GENOA DAM 8, WI

Growing Degree Day Averages
Derived from 1971-2000 Data

 

Element JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN
GDD
Base 40		 0 5 61 275 624 874 1032 967 681 358 66 4 4913
GDD
Base 45		 0 1 28 166 470 724 877 812 532 228 29 1 3841
GDD
Base 50		 0 0 12 87 323 574 722 657 387 127 10 0 2878
GDD
Base 55		 0 0 4 41 196 424 567 502 253 58 3 0 2033
GDD
Base 60		 0 0 1 17 103 280 412 348 144 19 0 0 1315
MGDD*
Base 50		 0 3 36 157 374 573 705 648 415 192 32 2 3116

*Modified Growing Degree Days: Base 50 Ceiling 86.

Growing Season Summary
Derived from 1971-2000 Averages

  Date of Last Spring Occurrence Date of First Fall Occurrence
Base
Temp
°F		 Median Early 90% 10% Late Median Early 90% 10% Late
32 4/26 3/26 4/07 5/08 5/16 10/07 9/22 9/24 10/26 11/03
30 4/19 3/24 4/03 5/06 5/13 10/17 9/25 10/02 11/03 11/05
28 4/12 3/23 3/29 4/25 5/06 10/27 9/30 10/04 11/05 11/11
24 4/06 3/16 3/24 4/13 4/16 11/03 10/10 10/20 11/15 11/16
20 3/23 2/27 3/14 4/08 4/09 11/12 10/20 10/30 11/29 12/06
16 3/18 2/20 3/04 4/07 4/09 11/21 10/31 11/08 12/13 12/21

Length of Growing Season (Days)
Derived from 1971-2000 Averages

Base
Temp
°F		 Median Shortest 10% 90% Longest
32 166 139 145 189 208
30 183 143 155 208 212
28 197 151 172 213 226
24 214 190 194 232 243
20 231 194 214 258 265
16 252 218 220 278 282