Historical Climate Data

Growing Season Summary
Station: 476859 PRENTICE NO. 2, 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 1 21 137 428 642 795 738 450 187 24 0 3397
GDD
Base 45		 0 0 7 73 293 494 642 586 313 101 9 0 2497
GDD
Base 50		 0 0 2 36 180 351 489 434 196 46 2 0 1722
GDD
Base 55		 0 0 0 16 96 221 339 288 107 18 0 0 1076
GDD
Base 60		 0 0 0 6 43 117 200 159 51 5 0 0 576
MGDD*
Base 50		 0 0 15 101 278 405 510 466 276 117 15 0 2168

*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 6/03 5/08 5/20 6/19 7/05 9/17 8/14 8/18 9/25 10/20
30 5/27 5/01 5/11 6/09 7/05 9/22 8/16 9/04 10/05 10/20
28 5/18 4/24 4/29 6/04 7/05 9/25 8/16 9/15 10/10 10/21
24 5/04 4/09 4/22 5/14 6/11 10/07 9/03 9/25 10/27 11/02
20 4/21 3/24 4/01 5/05 5/07 10/18 9/25 10/03 11/03 11/07
16 4/10 3/21 3/26 4/22 5/01 11/01 9/25 10/12 11/13 11/16

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

Base
Temp
°F		 Median Shortest 10% 90% Longest
32 105 53 76 124 147
30 120 70 88 138 158
28 134 80 103 154 175
24 159 112 130 180 187
20 187 141 163 209 212
16 206 165 178 221 234