About Climate Summary Tables

Growing Season Summary for Station USW00014898 - GREEN BAY A S INTL AP, WI

Growing season summary by month
Element JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN
GDD
Base 40		 0 3 41 181 513 792 947 885 629 288 64 6 4349
GDD
Base 45		 0 1 20 94 364 642 792 730 480 172 27 2 3323
GDD
Base 50		 0 0 9 44 234 492 637 575 337 91 9 0 2428
GDD
Base 60		 0 0 2 5 64 214 328 269 112 14 1 0 1010
MGDD*
Base 50		 0 1 24 104 293 498 628 574 377 150 29 2 6182

*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 04/16 06/02 05/01 06/16 . 09/25 09/03 09/13 10/05 10/26
32 05/05 04/08 05/21 04/21 06/06 . 10/03 09/12 09/22 10/16 11/08
28 04/24 03/27 05/08 04/07 05/16 . 10/15 09/19 10/01 11/01 11/11
24 04/10 03/09 04/26 03/28 05/10 . 10/29 09/29 10/11 11/14 12/04
20 04/01 03/01 04/15 03/17 04/30 . 11/10 10/17 10/25 11/25 12/09
16 03/23 02/25 04/05 03/10 04/30 . 11/21 10/21 11/05 12/04 11/19

 

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
36 140 118 124 154 168
32 158 136 145 175 187
28 187 154 165 214 224
24 220 186 192 238 258
20 237 211 216 257 267
16 250 215 228 278 288