Historical Climate Data

Growing Season Summary
Station: 479144 WEYERHAUSER, 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 29 184 507 717 874 809 529 223 27 0 3907
GDD
Base 45		 0 0 10 97 361 570 720 656 385 125 9 0 2938
GDD
Base 50		 0 0 3 46 229 424 566 502 251 57 2 0 2086
GDD
Base 55		 0 0 0 19 126 284 412 350 143 22 0 0 1361
GDD
Base 60		 0 0 0 7 58 161 263 210 68 6 0 0 774
MGDD*
Base 50		 0 1 27 145 335 461 569 522 332 152 20 0 2569

*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 5/27 4/24 5/06 6/14 6/22 9/22 8/26 9/12 10/04 10/10
30 5/16 4/13 4/26 6/12 6/22 9/24 8/27 9/12 10/09 10/15
28 5/09 3/30 4/22 6/03 6/16 10/02 8/27 9/18 10/14 10/21
24 4/21 3/23 4/07 5/08 6/01 10/08 9/15 9/25 11/03 11/16
20 4/10 3/23 3/26 5/05 5/10 10/19 10/01 10/02 11/10 11/16
16 4/06 3/15 3/20 4/13 4/21 11/01 10/11 10/14 11/20 11/30

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

Base
Temp
°F		 Median Shortest 10% 90% Longest
32 118 71 90 145 150
30 136 72 96 160 164
28 149 72 120 167 195
24 168 106 142 211 226
20 189 151 162 220 226
16 209 179 190 242 253