Historical Climate Data

Growing Season Summary
Station: 473800 HURLEY, WI

Growing Degree Day Averages
Derived from 1987-2000 Data

Element JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN
GDD
Base 40		 0 2 19 100 418 685 813 777 482 179 23 0 3404
GDD
Base 45		 0 0 6 50 288 538 659 622 340 98 9 0 2536
GDD
Base 50		 0 0 1 22 180 397 504 468 214 48 3 0 1784
GDD
Base 55		 0 0 0 9 98 269 353 318 121 19 1 0 1152
GDD
Base 60		 0 0 0 4 44 161 215 183 55 6 0 0 645
MGDD*
Base 50		 0 1 14 71 257 427 511 484 277 110 13 0 2106

*Modified Growing Degree Days: Base 50 Ceiling 86.

Growing Season Summary
Derived from 1987-2000 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 6/02 5/06 5/07 6/19 6/22 9/26 9/08 9/11 10/04 10/04
30 5/18 4/22 4/29 6/14 6/22 9/29 9/13 9/19 10/04 10/04
28 5/14 4/21 4/23 6/09 6/10 10/03 9/21 9/22 10/10 10/11
24 5/05 4/10 4/12 6/04 6/10 10/20 10/03 10/04 11/07 11/16
20 4/11 3/24 3/25 5/08 5/13 10/26 10/04 10/10 11/13 11/16
16 4/07 3/23 3/24 4/14 4/15 11/04 10/20 10/28 11/24 11/30

Length of Growing Season (Days)
Derived from 1987-2000 Averages

Base
Temp
°F		 Median Shortest 10% 90% Longest
32 116 88 92 134 135
30 136 94 95 148 158
28 144 117 122 161 165
24 168 117 139 197 203
20 197 154 162 223 233
16 216 189 197 244 249