Historical Climate Data

Growing Season Summary
Station: 471280 CASHTON, 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 6 48 233 574 831 953 907 623 309 52 4 4359
GDD
Base 45		 0 1 22 138 426 681 800 753 476 189 21 1 3365
GDD
Base 50		 0 0 10 72 288 531 647 600 335 100 6 0 2475
GDD
Base 55		 0 0 3 33 174 384 495 446 211 43 1 0 1704
GDD
Base 60		 0 0 1 14 90 246 343 295 117 15 0 0 1058
MGDD*
Base 50		 0 2 29 142 344 534 635 594 370 161 23 1 2717

*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 4/30 3/27 4/14 5/17 5/29 10/07 9/12 9/22 10/30 11/03
30 4/24 3/26 4/06 5/12 5/18 10/07 9/22 9/27 10/31 11/03
28 4/17 3/24 3/31 5/03 5/18 10/25 10/01 10/07 11/07 11/30
24 4/09 3/21 3/28 5/03 5/10 11/03 10/18 10/19 11/23 11/30
20 4/04 3/13 3/17 4/11 4/17 11/10 10/24 10/30 11/26 12/07
16 3/23 3/02 3/07 4/08 4/16 11/13 10/24 11/03 12/11 12/20

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

Base
Temp
°F		 Median Shortest 10% 90% Longest
32 162 120 134 187 200
30 172 132 153 198 213
28 192 153 161 214 225
24 212 162 179 228 248
20 218 207 210 253 266
16 231 209 217 276 280