Historical Climate Data

Growing Season Summary
Station: 475164 MATHER 3 NW, 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 37 186 500 753 912 840 547 245 44 2 4010
GDD
Base 45		 0 0 17 105 354 603 757 685 401 142 18 0 3044
GDD
Base 50		 0 0 7 53 226 454 602 530 267 71 6 0 2192
GDD
Base 55		 0 0 2 25 126 311 447 376 157 29 1 0 1464
GDD
Base 60		 0 0 0 11 60 185 296 231 80 9 0 0 870
MGDD*
Base 50		 0 2 27 130 313 477 594 539 339 156 28 1 2572

*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 5/12 3/29 4/27 5/29 6/11 9/25 8/14 9/12 10/12 10/14
30 5/07 3/27 4/17 5/20 5/29 10/02 8/15 9/20 10/14 11/01
28 4/27 3/27 4/08 5/10 5/13 10/06 9/22 9/25 10/22 11/03
24 4/13 3/25 4/03 4/29 5/07 10/22 10/02 10/05 11/08 11/11
20 4/08 3/22 3/26 4/17 4/22 11/03 10/08 10/19 11/14 11/15
16 3/30 2/27 3/16 4/09 4/16 11/12 10/19 10/31 11/28 12/20

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

Base
Temp
°F		 Median Shortest 10% 90% Longest
32 139 102 112 162 175
30 150 102 130 171 187
28 161 139 143 191 201
24 192 155 164 213 217
20 212 175 191 221 236
16 225 200 208 258 278