Historical Climate Data

Growing Season Summary
Station: 475863 NEWALD 4 N, WI

Growing Degree Day Averages
Derived from 1971-1997 Data

Element JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANN
GDD
Base 40		 0 1 12 123 419 630 766 715 447 176 18 0 3197
GDD
Base 45		 0 0 3 67 283 481 614 562 308 92 5 0 2324
GDD
Base 50		 0 0 0 33 173 336 461 410 190 41 1 0 1579
GDD
Base 55		 0 0 0 15 93 206 311 265 100 14 0 0 958
GDD
Base 60		 0 0 0 5 41 105 175 142 44 3 0 0 490
MGDD*
Base 50		 0 1 16 112 303 413 496 463 280 119 12 0 2144

*Modified Growing Degree Days: Base 50 Ceiling 86.

Growing Season Summary
Derived from 1971-1997 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 6/08 5/15 5/24 6/30 7/02 9/05 7/22 8/13 9/18 9/18
30 6/04 5/15 5/18 6/25 7/02 9/15 8/17 8/18 9/25 10/02
28 5/26 5/02 5/15 6/12 6/25 9/19 8/24 9/01 10/03 10/09
24 5/10 4/16 4/25 5/29 6/11 10/08 9/20 9/22 10/16 10/17
20 4/29 4/09 4/12 5/12 5/18 10/14 9/23 10/01 11/02 11/07
16 4/14 4/04 4/07 4/28 5/07 11/01 10/06 10/10 11/13 11/16

Length of Growing Season (Days)
Derived from 1971-1997 Averages

Base
Temp
°F		 Median Shortest 10% 90% Longest
32 94 24 49 111 121
30 99 56 67 125 133
28 116 73 85 134 138
24 145 110 128 163 178
20 166 138 141 198 205
16 194 170 173 216 217