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 46 205 539 813 970 900 624 263 50 3 4415
GDD
Base 45		 0 1 22 116 390 663 815 745 477 156 21 1 3406
GDD
Base 50		 0 0 11 57 255 513 660 590 337 82 7 0 2513
GDD
Base 60		 0 0 2 9 72 232 352 286 117 13 1 0 1081
MGDD*
Base 50		 0 2 32 138 329 518 643 587 383 154 32 2 6612

*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