Historical Climate Data

Growing Season Summary
Station: 477052 REEDSBURG, 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 3 60 267 584 824 995 910 632 315 72 4 4670
GDD
Base 45		 0 1 27 165 433 675 840 756 484 194 32 1 3610
GDD
Base 50		 0 0 12 91 292 525 685 601 341 104 11 0 2666
GDD
Base 55		 0 0 4 47 175 377 530 446 218 46 2 0 1849
GDD
Base 60		 0 0 1 22 92 236 376 296 120 16 0 0 1162
MGDD*
Base 50		 0 3 42 181 375 537 665 601 395 192 42 2 3038

*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 5/10 4/19 4/28 5/26 5/30 9/27 9/12 9/19 10/09 10/17
30 5/06 4/09 4/20 5/12 5/17 10/05 9/12 9/23 10/16 10/19
28 5/01 4/08 4/09 5/09 5/10 10/07 9/22 9/24 10/20 11/01
24 4/17 3/29 4/05 5/03 5/07 10/21 9/22 10/04 11/06 11/08
20 4/08 3/23 3/26 4/19 4/22 11/01 10/02 10/11 11/10 11/20
16 3/26 3/06 3/15 4/09 4/11 11/11 10/20 10/26 11/24 12/04

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

Base
Temp
°F		 Median Shortest 10% 90% Longest
32 140 110 120 155 160
30 153 134 138 170 185
28 159 137 139 183 185
24 190 151 161 209 214
20 208 176 182 223 227
16 223 194 208 251 259