Historical Climate Data

Growing Season Summary
Station: 472839 FOND DU LAC, 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 4 48 210 562 821 992 923 647 321 63 6 4573
GDD
Base 45		 0 1 23 119 411 671 837 768 499 198 28 2 3537
GDD
Base 50		 0 0 10 62 273 521 682 613 354 107 10 0 2619
GDD
Base 55		 0 0 4 30 162 373 527 458 224 49 2 0 1822
GDD
Base 60		 0 0 1 13 86 238 372 306 123 18 0 0 1154
MGDD*
Base 50		 0 2 29 117 327 522 668 607 381 166 31 2 2837

*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 4/27 4/02 4/11 5/08 5/16 10/11 9/22 9/26 10/26 11/01
30 4/22 4/02 4/06 5/07 5/09 10/19 9/22 10/04 11/02 11/09
28 4/13 3/27 4/03 4/25 5/07 10/23 10/02 10/09 11/10 11/12
24 4/07 3/19 3/24 4/13 4/18 11/05 10/19 10/22 11/18 1/02
20 3/28 2/27 3/16 4/09 4/10 11/12 10/20 10/31 11/30 1/02
16 3/20 2/18 3/04 4/07 4/09 11/22 11/02 11/09 12/14 1/02

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

Base
Temp
°F		 Median Shortest 10% 90% Longest
32 166 138 150 188 190
30 179 138 158 208 216
28 196 148 173 214 217
24 213 190 200 232 289
20 229 194 212 260 290
16 249 217 220 274 318