Historical Climate Data

Growing Season Summary
Station: 478267 STURGEON BAY EXP FARM, 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 0 23 136 442 709 899 859 597 276 52 3 4001
GDD
Base 45		 0 0 8 61 296 559 744 705 449 156 19 1 3000
GDD
Base 50		 0 0 1 22 172 410 589 550 306 70 6 0 2130
GDD
Base 55		 0 0 0 6 85 268 434 396 181 24 1 0 1398
GDD
Base 60		 0 0 0 1 35 148 282 247 87 5 0 0 807
MGDD*
Base 50		 0 0 12 76 251 431 586 554 345 129 17 1 2406

*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 5/10 4/21 4/27 5/25 6/04 10/08 9/23 9/24 11/02 11/13
30 5/03 4/17 4/23 5/17 5/22 10/14 9/23 9/25 11/12 11/16
28 4/24 4/06 4/09 5/09 5/13 10/24 9/24 9/30 11/12 11/19
24 4/12 3/23 3/27 4/21 4/26 11/09 10/09 10/17 11/17 11/23
20 4/02 3/12 3/18 4/10 4/13 11/20 10/24 11/03 12/03 12/22
16 3/27 3/06 3/15 4/09 4/11 11/25 11/03 11/12 12/19 12/22

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

Base
Temp
°F		 Median Shortest 10% 90% Longest
32 150 128 136 163 199
30 166 135 138 199 205
28 178 135 158 210 221
24 211 176 190 228 238
20 230 207 215 259 274
16 245 218 221 267 285