Historical Climate Data

Growing Season Summary
Station: 477708 SHAWANO 2 SSW, 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 29 189 509 757 918 848 558 248 39 1 4099
GDD
Base 45		 0 0 11 107 363 608 764 694 412 142 15 0 3120
GDD
Base 50		 0 0 4 56 234 460 610 539 275 69 4 0 2256
GDD
Base 55		 0 0 1 26 134 318 456 385 161 26 0 0 1515
GDD
Base 60		 0 0 0 10 67 191 306 240 81 8 0 0 908
MGDD*
Base 50		 0 0 21 132 323 482 601 550 346 154 24 0 2635

*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 5/20 4/29 5/02 6/03 6/09 9/25 9/03 9/16 10/04 10/16
30 5/10 4/25 4/28 5/24 5/27 9/30 9/19 9/20 10/10 10/17
28 5/07 4/10 4/23 5/17 5/27 10/04 9/20 9/23 10/18 10/22
24 4/20 3/24 4/03 5/05 5/10 10/19 9/20 9/23 11/03 11/15
20 4/09 3/14 3/25 4/21 4/28 11/04 9/23 10/12 11/15 11/20
16 4/02 3/14 3/18 4/11 4/19 11/13 10/17 11/01 11/28 12/21

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

Base
Temp
°F		 Median Shortest 10% 90% Longest
32 133 106 112 146 156
30 140 120 126 158 170
28 153 126 134 172 177
24 181 138 159 208 217
20 210 167 182 226 235
16 228 193 207 252 279