Historical Climate Data

Growing Season Summary
Station: 471970 DALTON, 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 5 59 235 572 819 981 903 637 327 65 6 4607
GDD
Base 45		 0 1 30 138 421 671 826 751 490 206 29 2 3562
GDD
Base 50		 0 0 15 73 282 522 671 599 348 114 10 0 2633
GDD
Base 55		 0 0 6 33 168 376 516 447 222 52 2 0 1824
GDD
Base 60		 0 0 1 14 86 240 362 298 123 19 0 0 1146
MGDD*
Base 50		 0 3 39 155 360 531 656 598 396 193 34 3 2968

*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 5/12 4/23 4/28 5/28 5/31 9/27 9/07 9/21 10/08 10/17
30 5/05 4/10 4/25 5/21 5/31 10/05 9/19 9/23 10/14 10/17
28 4/28 3/26 4/09 5/11 5/26 10/06 9/22 9/25 10/26 11/03
24 4/13 3/24 4/03 4/30 5/09 10/23 9/22 10/04 11/08 11/11
20 4/08 3/22 3/24 4/16 4/22 11/03 10/10 10/20 11/13 11/16
16 4/01 3/06 3/15 4/12 4/18 11/13 10/20 11/01 11/28 12/21

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

Base
Temp
°F		 Median Shortest 10% 90% Longest
32 139 110 120 156 157
30 152 126 136 168 179
28 166 133 142 183 204
24 191 150 162 213 217
20 212 190 194 224 236
16 227 194 206 259 280