Historical Climate Data

Growing Season Summary
Station: 474937 LYNXVILLE DAM 9, 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 5 64 293 649 897 1063 992 706 373 71 5 4999
GDD
Base 45		 0 1 30 179 495 747 908 837 556 240 31 2 3931
GDD
Base 50		 0 0 13 95 347 597 753 682 409 136 11 0 2969
GDD
Base 55		 0 0 5 44 214 447 598 527 271 63 2 0 2119
GDD
Base 60		 0 0 1 18 113 302 443 373 158 21 0 0 1396
MGDD*
Base 50		 0 3 39 168 390 592 729 670 431 200 35 2 3184

*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 4/22 3/24 4/03 5/03 5/07 10/14 9/22 9/29 11/02 11/05
30 4/21 3/24 4/03 4/30 5/07 10/21 9/27 10/04 11/04 11/05
28 4/13 3/24 3/29 4/25 5/07 10/28 10/02 10/10 11/08 11/11
24 4/06 3/14 3/21 4/14 4/24 11/07 10/20 10/24 11/20 11/29
20 3/23 2/26 3/07 4/09 4/16 11/12 10/20 10/30 11/29 12/06
16 3/18 2/20 3/03 4/07 4/09 11/23 11/01 11/10 12/13 12/21

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

Base
Temp
°F		 Median Shortest 10% 90% Longest
32 181 143 153 201 212
30 188 150 162 209 225
28 197 150 178 217 228
24 216 190 196 241 261
20 230 194 214 258 263
16 253 218 223 279 282