Historical Climate Data

Growing Season Summary
Station: 478110 STANLEY, 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 1 31 184 506 740 912 840 544 237 32 1 3994
GDD
Base 45		 0 0 13 103 360 590 757 685 398 135 12 0 3028
GDD
Base 50		 0 0 4 50 230 442 602 531 263 66 3 0 2172
GDD
Base 55		 0 0 1 22 128 300 448 377 153 26 0 0 1443
GDD
Base 60		 0 0 0 8 61 175 297 231 76 8 0 0 847
MGDD*
Base 50		 0 0 22 129 316 468 597 538 333 147 20 0 2551

*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 5/16 4/25 4/29 6/03 6/22 9/25 9/01 9/09 10/13 10/16
30 5/09 4/21 4/25 5/27 6/11 10/01 9/07 9/20 10/13 10/21
28 4/30 4/08 4/14 5/13 5/19 10/06 9/20 9/23 10/20 10/22
24 4/16 3/24 4/02 4/30 5/06 10/19 9/29 10/02 11/02 11/11
20 4/08 3/21 3/25 4/21 4/27 11/01 10/02 10/15 11/13 11/15
16 4/05 3/14 3/19 4/14 4/22 11/12 10/10 10/23 11/28 12/07

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

Base
Temp
°F		 Median Shortest 10% 90% Longest
32 135 97 110 156 171
30 150 110 122 162 177
28 158 136 140 176 195
24 186 149 164 207 217
20 209 174 180 219 235
16 219 189 197 247 261