Historical Climate Data

Growing Season Summary
Station: 476827 PRAIRIE DU CHIEN, 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		 1 8 82 306 645 899 1058 997 715 393 85 7 5169
GDD
Base 45		 0 1 41 192 491 750 903 842 566 260 40 2 4066
GDD
Base 50		 0 0 19 106 344 600 749 687 420 154 15 0 3076
GDD
Base 55		 0 0 8 52 216 451 594 533 284 79 4 0 2207
GDD
Base 60		 0 0 2 24 118 307 439 378 171 32 1 0 1464
MGDD*
Base 50		 0 5 56 195 403 593 712 668 454 240 48 3 3360

*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 5/02 4/04 4/19 5/14 5/16 10/05 9/19 9/23 10/15 10/20
30 4/22 3/26 4/05 5/09 5/16 10/09 9/22 9/25 10/30 11/01
28 4/16 3/24 3/31 5/02 5/10 10/18 9/22 10/02 11/03 11/03
24 4/09 3/19 3/24 4/20 5/06 10/31 10/02 10/13 11/11 11/13
20 4/03 3/06 3/19 4/11 4/18 11/09 10/20 10/25 11/21 11/29
16 3/21 2/22 3/05 4/08 4/11 11/17 10/31 11/07 12/02 12/20

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

Base
Temp
°F		 Median Shortest 10% 90% Longest
32 156 137 142 172 181
30 172 139 151 191 201
28 185 139 154 207 212
24 201 177 183 229 238
20 218 194 207 245 259
16 245 212 218 268 280