Historical Climate Data

Growing Season Summary
Station: 473405 HANCOCK EXP FARM, 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 4 47 226 570 810 957 892 618 306 53 3 4439
GDD
Base 45		 0 1 22 134 420 660 802 737 470 189 22 0 3422
GDD
Base 50		 0 0 10 72 282 510 647 582 329 101 7 0 2515
GDD
Base 55		 0 0 3 35 170 363 492 428 206 46 2 0 1728
GDD
Base 60		 0 0 1 14 89 229 339 278 113 17 0 0 1070
MGDD*
Base 50		 0 2 32 156 361 522 635 585 381 181 29 2 2858

*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 4/23 4/28 5/27 6/01 9/28 9/07 9/19 10/10 10/14
30 5/08 4/07 4/23 5/24 5/30 10/03 9/12 9/21 10/14 10/16
28 5/03 4/08 4/16 5/15 5/19 10/06 9/20 9/23 10/20 11/01
24 4/17 3/24 4/04 4/30 5/07 10/19 9/22 10/03 11/08 11/11
20 4/09 3/24 3/29 4/22 5/01 11/03 9/22 10/16 11/13 11/22
16 4/06 3/12 3/18 4/18 4/22 11/10 9/22 10/20 11/24 11/29

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

Base
Temp
°F		 Median Shortest 10% 90% Longest
32 136 110 123 156 170
30 147 120 131 171 185
28 159 126 138 180 188
24 187 150 161 211 217
20 204 167 180 217 234
16 217 181 194 249 262