Historical Climate Data

Growing Season Summary
Station: 471416 CHARMANY FARM, 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 4 56 222 552 804 951 881 619 301 61 5 4390
GDD
Base 45		 0 1 28 128 403 655 799 729 473 186 27 2 3380
GDD
Base 50		 0 0 12 65 266 507 647 577 332 101 10 0 2484
GDD
Base 55		 0 0 5 30 154 362 494 425 208 45 2 0 1707
GDD
Base 60		 0 0 1 12 76 227 343 277 112 15 0 0 1058
MGDD*
Base 50		 0 2 36 136 328 513 634 576 372 176 34 2 2772

*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 3/27 4/14 5/23 5/29 10/06 9/17 9/22 10/25 11/01
30 4/22 3/27 4/09 5/10 5/29 10/12 9/17 9/22 11/04 11/04
28 4/18 3/24 4/07 5/07 5/10 10/13 9/22 9/29 11/04 11/13
24 4/09 3/23 3/29 4/22 4/28 11/01 9/26 10/16 11/17 11/29
20 4/04 3/07 3/16 4/13 4/22 11/07 10/08 10/20 11/24 12/21
16 3/25 2/18 3/03 4/09 4/11 11/16 11/02 11/05 12/06 12/21

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

Base
Temp
°F		 Median Shortest 10% 90% Longest
32 156 111 129 186 201
30 171 111 137 207 213
28 178 139 153 210 225
24 203 172 179 226 248
20 217 187 193 255 279
16 234 206 214 279 282