About Climate Summary Tables

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

GDD Summary by Month (based on 1991-2020 period)
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 0 22 116 390 663 815 745 476 156 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 0 11 58 256 508 644 587 336 82 7 0 2489

*Modified Growing Degree Days: Base 50 Ceiling 86.

Dates of First & Last Occurrence of Critical Temperature Thresholds Summary (based on 1991-2020 period)
  DATE OF LAST SPRING OCCURRENCE   DATE OF FIRST FALL OCCURRENCE
Base
Temp °F		 Earliest 10% Median 90% Latest . Earliest 10% Median 90% Latest
36 04-29 05-06 05-17 05-31 06-21 . 09-12 09-14 09-23 10-09 10-11
32 04-25 04-25 05-11 05-20 05-21 . 09-15 09-20 10-02 10-14 10-16
28 03-30 04-12 04-27 05-13 05-20 . 10-01 10-02 10-11 10-25 10-29
24 03-24 03-28 04-12 04-29 05-03 . 10-02 10-07 10-22 11-04 11-16
20 03-09 03-22 04-06 04-14 04-19 . 10-16 10-19 11-04 11-20 12-07
16 03-06 03-14 03-28 04-08 04-09 . 10-31 11-01 11-15 11-30 12-08

 

Growing Season Length Summary (based on 1991-2020 period)
Base
Temp °F		 Shortest 10% Median 90% Longest
36 94 111 132 144 156
32 121 128 146 157 163
28 143 155 170 186 200
24 166 174 192 211 225
20 185 193 214 235 250
16 211 214 229 260 262