Historical Climate Data

Growing Season Summary
Station: 475091 MARINETTE, 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 26 168 501 771 951 895 606 287 52 3 4204
GDD
Base 45		 0 0 9 86 354 621 797 740 458 169 20 0 3206
GDD
Base 50		 0 0 2 38 225 471 642 585 317 83 6 0 2332
GDD
Base 55		 0 0 0 15 126 327 488 430 193 31 1 0 1584
GDD
Base 60		 0 0 0 5 63 199 335 280 99 8 0 0 970
MGDD*
Base 50		 0 0 17 106 298 485 627 584 361 149 23 1 2614

*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 5/08 4/20 4/26 5/18 5/27 10/03 9/14 9/23 10/17 11/01
30 4/30 4/06 4/17 5/14 5/27 10/10 9/22 9/24 10/31 11/11
28 4/23 3/26 4/07 5/08 5/11 10/18 9/22 10/02 11/06 11/15
24 4/13 3/14 3/30 4/26 5/07 11/04 9/23 10/12 11/16 11/28
20 4/05 3/14 3/20 4/17 4/19 11/12 10/14 10/24 11/26 12/20
16 3/25 2/27 3/16 4/09 4/18 11/20 10/31 11/03 12/07 12/22

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

Base
Temp
°F		 Median Shortest 10% 90% Longest
32 151 124 131 166 177
30 162 135 138 186 201
28 182 138 159 204 213
24 206 139 179 222 258
20 219 193 205 248 271
16 233 208 218 259 278