Historical Climate Data

Growing Season Summary
Station: 476838 PRAIRIE DU SAC 2 N, 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 3 50 233 587 825 1004 901 645 309 56 3 4582
GDD
Base 45		 0 0 22 136 437 680 850 751 497 189 23 0 3559
GDD
Base 50		 0 0 9 71 295 534 696 601 354 102 7 0 2652
GDD
Base 55		 0 0 3 34 177 390 542 451 226 46 1 0 1859
GDD
Base 60		 0 0 1 15 93 253 388 304 125 16 0 0 1189
MGDD*
Base 50		 0 2 33 137 348 532 676 596 389 171 28 2 2895

*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 4/27 4/06 4/19 5/10 5/16 10/06 9/12 9/22 10/14 10/30
30 4/22 4/01 4/08 5/06 5/16 10/07 9/22 9/23 10/21 11/03
28 4/17 4/02 4/04 4/30 5/07 10/17 9/22 10/02 11/05 11/09
24 4/07 3/21 3/25 4/14 4/18 11/02 10/02 10/15 11/11 11/12
20 4/03 3/06 3/16 4/12 4/14 11/08 10/20 10/23 11/19 11/24
16 3/23 2/27 3/07 4/08 4/10 11/14 10/20 11/01 12/04 12/21

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

Base
Temp
°F		 Median Shortest 10% 90% Longest
32 158 136 142 179 182
30 168 139 144 189 200
28 184 150 161 211 216
24 205 177 191 222 226
20 222 194 201 239 258
16 235 194 218 261 279