Historical Climate Data

Growing Season Summary
Station: 475286 MELLEN 4 NE, 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 19 123 414 654 822 763 470 192 27 0 3490
GDD
Base 45		 0 0 6 66 285 507 669 610 329 105 10 0 2591
GDD
Base 50		 0 0 1 33 181 365 516 456 206 48 3 0 1813
GDD
Base 55		 0 0 0 13 102 237 365 309 114 19 0 0 1163
GDD
Base 60		 0 0 0 5 51 132 226 179 53 5 0 0 654
MGDD*
Base 50		 0 1 16 93 272 408 525 480 281 117 16 0 2215

*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 5/31 5/10 5/16 6/23 7/02 9/22 8/30 9/07 10/01 10/04
30 5/28 5/05 5/11 6/13 6/24 9/25 9/03 9/13 10/07 10/14
28 5/18 4/28 4/30 6/11 6/22 9/29 9/16 9/21 10/09 10/16
24 5/03 4/11 4/20 5/18 5/20 10/21 10/02 10/05 11/04 11/05
20 4/19 3/24 4/05 5/04 5/18 11/01 10/06 10/10 11/14 11/16
16 4/09 2/27 3/25 4/20 4/26 11/08 10/19 10/25 11/21 11/22

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

Base
Temp
°F		 Median Shortest 10% 90% Longest
32 112 67 90 127 144
30 120 91 100 139 144
28 132 100 111 157 162
24 167 142 148 191 203
20 199 148 167 215 233
16 215 176 198 236 248