Historical Climate Data

Growing Season Summary
Station: 472001 DARLINGTON, 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		 1 6 63 244 577 822 1000 916 631 308 64 6 4627
GDD
Base 45		 0 1 30 143 425 673 845 762 483 190 29 2 3575
GDD
Base 50		 0 0 14 74 286 524 690 607 341 105 11 1 2645
GDD
Base 55		 0 0 5 35 170 377 535 453 217 47 3 0 1838
GDD
Base 60		 0 0 1 15 87 238 381 302 122 18 0 0 1161
MGDD*
Base 50		 0 4 44 159 359 533 672 603 394 193 40 3 2999

*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 4/09 4/22 5/27 5/30 10/02 9/12 9/20 10/13 10/17
30 5/05 4/07 4/21 5/24 5/30 10/05 9/12 9/22 10/14 10/17
28 4/25 4/01 4/11 5/07 5/14 10/12 9/22 9/25 10/31 11/11
24 4/13 3/27 4/01 4/25 5/07 10/22 10/02 10/06 11/04 11/16
20 4/06 3/23 3/25 4/17 4/22 11/02 10/02 10/15 11/13 11/19
16 3/22 3/02 3/11 4/08 4/11 11/12 10/20 10/30 11/27 12/02

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

Base
Temp
°F		 Median Shortest 10% 90% Longest
32 148 110 132 167 171
30 155 110 134 171 180
28 167 140 149 188 209
24 194 150 173 210 219
20 209 177 192 224 226
16 230 194 211 255 260