Historical Climate Data

Growing Season Summary
Station: 478589 TREMPEALEAU DAM 6, 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 52 262 608 858 1020 944 652 326 52 3 4745
GDD
Base 45		 0 1 23 156 455 708 865 789 503 202 21 1 3696
GDD
Base 50		 0 0 9 82 310 558 710 634 360 110 6 0 2759
GDD
Base 55		 0 0 3 38 186 410 555 479 231 49 1 0 1934
GDD
Base 60		 0 0 0 15 95 267 401 326 128 16 0 0 1237
MGDD*
Base 50		 0 3 32 157 366 559 691 627 398 183 26 1 3022

*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 3/25 4/07 5/13 5/16 10/04 9/17 9/22 10/15 11/03
30 4/23 3/25 4/06 5/08 5/14 10/07 9/17 9/24 10/26 11/04
28 4/13 3/24 4/03 5/03 5/10 10/16 9/27 10/03 11/02 11/04
24 4/06 3/14 3/22 4/16 4/22 10/31 9/30 10/07 11/11 11/15
20 4/03 3/07 3/19 4/09 4/16 11/05 10/10 10/20 11/23 11/29
16 3/23 2/27 3/07 4/07 4/09 11/13 10/19 11/01 12/04 12/20

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

Base
Temp
°F		 Median Shortest 10% 90% Longest
32 160 131 138 186 192
30 169 139 146 198 205
28 184 151 163 207 213
24 205 175 186 228 242
20 218 188 196 245 262
16 235 210 218 261 279