Historical Climate Data

Growing Season Summary
Station: 476622 PITTSVILLE 2 S, WI

Growing Degree Day Averages
Derived from 1971-1987 Data

Element JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN
GDD
Base 40		 0 2 37 214 513 733 916 846 565 281 48 2 4074
GDD
Base 45		 0 0 17 125 366 583 762 691 418 167 19 0 3087
GDD
Base 50		 0 0 6 66 234 434 608 536 282 84 5 0 2213
GDD
Base 55		 0 0 1 32 130 289 454 382 169 36 1 0 1472
GDD
Base 60		 0 0 0 14 63 164 304 237 86 11 0 0 870
MGDD*
Base 50		 0 2 27 152 337 473 604 553 357 177 31 1 2663

*Modified Growing Degree Days: Base 50 Ceiling 86.

Growing Season Summary
Derived from 1971-1987 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 5/17 5/01 5/02 5/28 5/31 9/21 9/01 9/08 9/28 10/03
30 5/13 4/21 4/28 5/25 5/27 9/24 9/04 9/13 10/08 10/16
28 5/09 4/08 4/22 5/19 5/27 9/29 9/20 9/22 10/13 10/16
24 4/21 4/08 4/08 5/05 5/06 10/14 9/22 9/26 11/01 11/02
20 4/08 3/25 3/26 4/22 4/24 10/30 9/22 10/10 11/11 11/12
16 4/05 3/16 3/23 4/14 4/22 11/11 10/18 10/20 11/20 11/22

Length of Growing Season (Days)
Derived from 1971-1987 Averages

Base
Temp
°F		 Median Shortest 10% 90% Longest
32 125 109 111 143 146
30 137 114 117 155 171
28 148 126 131 170 171
24 179 139 143 188 201
20 201 151 179 221 223
16 221 194 195 236 237