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Climate Data for Vernon County, Wisconsin
Climate Normals and Growing Season Summary
Chart courtesy of the Midwestern Regional Climate Center.
Growing Season Summary:
- Median date of last frost in the spring: May 14. Last Spring Frost Zones.
- (The last frost occurs on or after May 27 in 10 percent of the years.)
- Median date of first frost in the fall: September 28. First Fall Frost Zones.
- (The first frost occurs on or before September 14 in 10 percent of the years.)
- Median growing season: 138 days. Range: 109 to 155 days.
- For perennials, landscape plantings and fruit trees, see our Map of USDA Plant Hardiness Zones for Wisconsin.
| Climate Normals |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sept |
Oct |
Nov |
Dec |
| Ave Daily High (F°) |
23.3 |
29.3 |
41.4 |
57.5 |
69.6 |
77.9 |
82.6 |
79.8 |
71.1 |
59.8 |
43.1 |
27.8 |
| Ave Daily Low (F°) |
4.1 |
8.7 |
21.5 |
34.0 |
44.9 |
54.2 |
58.7 |
56.1 |
48.1 |
37.6 |
25.5 |
10.8 |
| Growing Degree Days |
0 |
1 |
30 |
149 |
333 |
501 |
622 |
557 |
356 |
177 |
30 |
2 |
| Heating Degree Days |
1590 |
1285 |
1039 |
576 |
273 |
57 |
9 |
31 |
171 |
512 |
921 |
1417 |
| Cooling Degree Days |
0 |
0 |
0 |
0 |
32 |
90 |
186 |
124 |
9 |
6 |
0 |
0 |
| Ave Precipitation (") |
0.79 |
0.85 |
1.63 |
3.12 |
3.35 |
3.73 |
4.17 |
4.16 |
4.15 |
2.28 |
1.66 |
1.18 |
| Ave Snowfall (") |
8.7 |
7.0 |
6.8 |
1.7 |
0.0 |
0.0 |
0.0 |
0.0 |
0.0 |
0.2 |
3.3 |
10.2 |
Data from the weather station at Viroqua 2 NW, latitude 43°34' N, longitude 90°54' W, elevation 1200 ft.
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