About Climate Summary Tables

Growing Season Summary for Station USW00014991 - CHIPPEWA VALLEY REGIONAL AIRPORT, WI

Growing season summary by month
Element JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN
GDD
Base 40		 0 2 49 211 551 825 982 913 636 269 51 3 4491
GDD
Base 45		 0 1 24 121 401 675 827 758 488 160 22 1 3476
GDD
Base 50		 0 0 11 60 265 525 672 603 346 85 8 0 2575
GDD
Base 60		 0 0 2 9 77 241 363 297 123 14 1 0 1126
MGDD*
Base 50		 0 1 32 137 328 521 646 592 383 152 31 2 2825

*Modified Growing Degree Days: Base 50 Ceiling 86.

Growing Season Summary - Derived from 1991-2020 Averages
  DATE OF LAST SPRING OCCURRENCE   DATE OF FIRST FALL OCCURRENCE
Base
Temp °F		 Median Early 90% 10% Late . Median Early 90% 10% Late
36 05/18 04/29 06/02 05/03 06/21 . 09/24 09/01 09/13 10/05 10/12
32 05/06 04/08 05/21 04/23 05/29 . 10/02 09/03 09/21 10/14 10/16
28 04/26 03/30 05/11 04/11 05/26 . 10/12 09/12 10/01 10/27 10/29
24 04/15 03/24 04/30 04/02 05/10 . 10/24 09/29 10/09 11/07 11/16
20 04/05 03/09 04/19 03/23 05/09 . 11/03 10/02 10/19 11/17 12/07
16 03/30 02/26 04/11 03/14 04/30 . 11/12 10/17 10/31 11/26 11/21

 

Length of Growing Season (Days) - Derived from 1991-2020 Normals
*Annual/seasonal totals may differ from the sum of the monthly totals due to rounding
Base
Temp °F		 Median Shortest 10% 90% Longest
36 134 117 119 145 155
32 148 120 128 160 177
28 174 147 162 191 203
24 199 171 185 216 230
20 220 189 204 237 249
16 238 210 214 259 267