Historical Climate Data

Growing Season Summary
Station: 474195 KEWAUNEE, 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 0 19 117 390 651 866 833 578 260 47 4 3639
GDD
Base 45		 0 0 6 48 248 505 713 680 433 142 16 1 2704
GDD
Base 50		 0 0 1 16 134 360 559 528 294 60 4 0 1902
GDD
Base 55		 0 0 0 4 63 225 407 376 170 18 0 0 1233
GDD
Base 60		 0 0 0 1 24 117 257 228 77 4 0 0 694
MGDD*
Base 50		 0 0 9 55 203 380 555 530 327 115 16 1 2124

*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 5/03 4/08 4/17 5/20 6/04 10/08 9/22 9/23 10/27 11/01
30 4/26 4/08 4/12 5/11 5/20 10/16 9/23 9/23 11/02 11/16
28 4/21 3/27 4/06 5/10 5/13 10/28 9/23 10/11 11/13 11/16
24 4/09 3/22 3/24 4/17 4/22 11/07 10/08 10/18 11/22 12/07
20 3/30 3/12 3/17 4/09 4/12 11/16 10/20 11/01 12/06 12/21
16 3/21 2/26 3/05 4/07 4/09 11/30 11/02 11/09 12/18 12/24

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

Base
Temp
°F		 Median Shortest 10% 90% Longest
32 159 126 135 182 191
30 173 126 146 189 202
28 188 157 174 208 220
24 212 183 190 234 238
20 234 194 216 261 279
16 248 219 229 279 281