Historical Climate Data

Growing Season Summary
Station: 470904 BLOOMER CITY HALL, 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 33 210 548 791 950 877 579 253 35 1 4255
GDD
Base 45		 0 0 13 121 399 641 796 723 433 147 13 0 3269
GDD
Base 50		 0 0 4 61 264 491 642 570 295 72 4 0 2392
GDD
Base 55		 0 0 1 28 155 346 489 416 178 29 1 0 1634
GDD
Base 60		 0 0 0 11 77 214 337 269 93 8 0 0 1006
MGDD*
Base 50		 0 1 23 146 344 506 627 571 356 156 21 0 2738

*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 5/12 4/21 4/28 5/27 6/08 9/25 9/12 9/20 10/10 10/22
30 5/06 4/12 4/22 5/19 5/24 10/01 9/20 9/23 10/19 10/22
28 4/29 3/29 4/10 5/11 5/14 10/06 9/22 9/26 10/22 11/01
24 4/17 3/24 4/03 4/30 5/07 10/19 9/25 10/03 11/04 11/05
20 4/08 3/21 3/24 4/17 5/01 11/01 10/02 10/19 11/10 11/16
16 3/30 2/27 3/15 4/09 4/16 11/10 10/20 10/27 11/26 11/29

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

Base
Temp
°F		 Median Shortest 10% 90% Longest
32 140 106 120 154 177
30 152 127 134 165 177
28 162 137 141 186 195
24 187 141 160 209 226
20 206 177 190 217 226
16 220 194 209 251 261