Historical Climate Data

Growing Season Summary
Station: 474582 LAONA 6 SW, 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 17 134 423 630 775 711 450 195 24 1 3364
GDD
Base 45		 0 0 6 71 286 481 621 558 309 104 8 0 2446
GDD
Base 50		 0 0 1 35 172 336 467 404 188 46 2 0 1657
GDD
Base 55		 0 0 0 16 91 206 315 258 98 16 0 0 1003
GDD
Base 60		 0 0 0 6 40 102 178 133 41 4 0 0 507
MGDD*
Base 50		 0 0 13 101 275 384 483 430 249 108 12 0 2060

*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 5/31 5/07 5/15 6/20 7/05 9/20 8/17 9/04 10/02 10/04
30 5/26 5/02 5/12 6/11 7/05 9/26 9/03 9/06 10/09 10/16
28 5/14 4/24 4/30 6/07 6/13 9/30 9/07 9/21 10/19 10/30
24 4/28 4/05 4/10 5/10 5/16 10/14 9/23 10/03 11/04 11/16
20 4/17 3/25 4/03 5/04 5/09 11/02 10/06 10/14 11/14 11/16
16 4/10 3/14 3/21 4/19 4/26 11/08 10/06 10/20 11/18 11/29

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

Base
Temp
°F		 Median Shortest 10% 90% Longest
32 109 61 92 129 134
30 126 61 100 142 147
28 142 99 116 162 176
24 169 135 151 203 217
20 191 164 174 220 236
16 215 172 189 233 260