Historical Climate Data

Growing Season Summary
Station: 473332 GURNEY, 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 3 22 123 414 644 816 771 498 232 37 1 3540
GDD
Base 45		 0 0 8 65 281 497 663 618 354 131 16 0 2617
GDD
Base 50		 0 0 2 32 175 355 510 464 225 64 5 0 1823
GDD
Base 55		 0 0 0 15 99 227 359 316 126 26 1 0 1164
GDD
Base 60		 0 0 0 6 49 125 220 184 62 9 0 0 654
MGDD*
Base 50		 0 2 16 89 266 400 517 481 291 134 19 0 2203

*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 5/31 5/11 5/19 6/16 6/24 9/24 8/16 9/08 10/06 10/12
30 5/29 5/10 5/12 6/13 6/24 9/27 9/03 9/13 10/08 10/12
28 5/12 4/25 4/29 6/01 6/20 10/05 9/20 9/23 10/19 11/02
24 4/29 4/08 4/12 5/16 5/19 10/29 10/01 10/05 11/12 11/13
20 4/13 3/22 3/25 5/04 5/13 11/03 10/03 10/15 11/16 11/21
16 4/06 3/06 3/22 4/14 4/17 11/12 10/19 10/31 11/22 11/30

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

Base
Temp
°F		 Median Shortest 10% 90% Longest
32 114 82 93 131 135
30 122 91 101 138 145
28 144 101 124 163 177
24 180 149 159 199 209
20 199 166 181 225 232
16 218 192 202 248 253