Historical Climate Data

Growing Season Summary
Station: 470265 APPLETON, 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 2 37 195 552 804 986 913 628 289 52 2 4464
GDD
Base 45		 0 0 15 107 402 655 831 758 480 171 21 0 3447
GDD
Base 50		 0 0 6 53 266 505 676 603 337 87 7 0 2547
GDD
Base 55		 0 0 1 24 158 359 522 448 211 36 1 0 1765
GDD
Base 60		 0 0 0 10 85 226 368 296 114 11 0 0 1113
MGDD*
Base 50		 0 1 22 115 328 511 663 600 372 147 23 0 2788

*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 5/04 4/10 4/23 5/19 5/27 10/07 9/21 9/22 10/26 11/03
30 4/25 4/08 4/10 5/15 5/27 10/17 9/21 9/24 11/06 11/11
28 4/22 4/04 4/09 5/07 5/16 10/18 9/23 9/29 11/09 11/12
24 4/08 3/19 3/23 4/20 4/28 11/02 10/08 10/15 11/15 1/01
20 4/04 2/28 3/17 4/09 4/13 11/11 10/19 10/31 11/24 1/01
16 3/25 2/27 3/09 4/08 4/09 11/21 10/19 11/06 12/04 1/02

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

Base
Temp
°F		 Median Shortest 10% 90% Longest
32 154 121 137 181 204
30 173 137 140 202 216
28 184 140 153 206 217
24 209 175 187 228 269
20 223 200 209 255 269
16 234 210 217 263 280