Historical Climate Data

Growing Season Summary
Station: 470516 BARABOO WATER WORKS, 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 3 49 200 524 778 934 855 571 254 50 5 4202
GDD
Base 45		 0 0 24 114 376 629 780 700 424 150 21 1 3203
GDD
Base 50		 0 0 11 61 245 480 625 545 287 77 7 0 2327
GDD
Base 55		 0 0 4 30 143 335 471 391 174 33 2 0 1576
GDD
Base 60		 0 0 1 14 72 205 319 246 91 11 0 0 955
MGDD*
Base 50		 0 3 39 145 336 501 616 557 365 176 35 3 2762

*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 5/19 4/29 5/03 6/03 6/22 9/23 9/06 9/11 10/02 10/14
30 5/10 4/24 4/29 5/28 5/31 9/30 9/12 9/17 10/08 10/17
28 5/07 4/09 4/23 5/23 5/31 10/02 9/19 9/22 10/16 11/01
24 4/18 3/26 4/05 5/04 5/31 10/07 9/22 9/26 11/01 11/06
20 4/10 3/23 3/27 4/23 4/29 10/25 10/02 10/09 11/09 11/12
16 4/05 3/06 3/21 4/13 4/19 11/10 10/20 10/25 11/24 12/07

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

Base
Temp
°F		 Median Shortest 10% 90% Longest
32 128 94 107 146 147
30 145 110 119 155 156
28 152 111 124 171 182
24 174 123 151 197 210
20 200 161 174 217 225
16 218 193 198 246 260