Historical Climate Data

Growing Season Summary
Station: 477464 ST CROIX FALLS, 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 2 35 213 571 809 983 915 599 272 35 1 4439
GDD
Base 45		 0 0 14 123 421 659 828 760 451 161 13 0 3435
GDD
Base 50		 0 0 5 64 282 510 673 605 311 81 3 0 2539
GDD
Base 55		 0 0 1 29 167 363 518 450 190 36 0 0 1758
GDD
Base 60		 0 0 0 11 87 228 364 299 102 12 0 0 1104
MGDD*
Base 50		 0 1 27 149 362 519 651 598 366 167 24 1 2869

*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 5/07 4/17 4/26 5/21 6/02 9/30 9/15 9/21 10/13 10/17
30 5/03 4/03 4/22 5/19 6/02 10/04 9/20 9/23 10/19 10/24
28 4/29 4/03 4/13 5/13 5/20 10/09 9/22 9/26 10/31 11/03
24 4/14 3/24 3/30 4/27 5/06 10/22 10/02 10/10 11/06 11/10
20 4/08 3/21 3/24 4/21 4/29 11/02 10/02 10/15 11/12 11/22
16 4/02 3/16 3/23 4/09 4/28 11/08 10/19 10/29 11/23 11/27

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

Base
Temp
°F		 Median Shortest 10% 90% Longest
32 144 117 125 160 172
30 154 117 131 173 186
28 167 128 143 189 200
24 191 166 171 215 224
20 207 169 188 225 229
16 220 187 203 241 250