Historical Climate Data

Growing Season Summary
Station: 472428 EAU CLAIRE FAA AIRPORT, 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 37 211 564 810 981 906 588 260 37 2 4402
GDD
Base 45		 0 0 16 121 413 660 826 751 441 152 14 0 3400
GDD
Base 50		 0 0 6 62 276 511 671 596 302 76 4 0 2509
GDD
Base 55		 0 0 1 29 164 364 516 441 185 31 1 0 1736
GDD
Base 60		 0 0 0 11 85 229 363 291 98 10 0 0 1090
MGDD*
Base 50		 0 1 27 142 347 517 650 590 355 154 22 1 2811

*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 5/06 4/08 4/25 5/21 5/27 9/28 9/03 9/21 10/10 10/16
30 5/02 4/06 4/11 5/15 5/27 10/03 9/20 9/22 10/15 10/21
28 4/28 3/29 4/08 5/09 5/14 10/07 9/20 9/24 10/19 10/22
24 4/13 3/24 4/03 4/26 5/06 10/24 10/02 10/04 11/04 11/11
20 4/08 3/23 3/26 4/16 4/22 11/01 10/02 10/16 11/13 11/15
16 3/31 2/26 3/15 4/09 4/16 11/12 10/19 10/29 11/28 12/05

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

Base
Temp
°F		 Median Shortest 10% 90% Longest
32 146 113 127 161 179
30 158 128 138 176 188
28 163 139 142 178 188
24 192 151 170 210 225
20 207 177 190 219 233
16 227 193 210 250 260