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Climate Data for Douglas 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 12. Last Spring Frost Zones.
- (The last frost occurs on or after June 17 in 10 percent of the years.)
- Median date of first frost in the fall: September 26. First Fall Frost Zones.
- (The first frost occurs on or before September 15 in 10 percent of the years.)
- Median growing season: 137 days. Range: 88 to 157 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°) |
20.0 |
25.3 |
35.5 |
47.6 |
58.8 |
69.0 |
77.5 |
74.6 |
66.0 |
54.8 |
38.8 |
24.4 |
| Ave Daily Low (F°) |
-0.1 |
4.5 |
16.8 |
28.8 |
37.8 |
46.2 |
54.4 |
53.7 |
45.8 |
35.5 |
23.1 |
7.4 |
| Growing Degree Days |
0 |
1 |
7 |
52 |
157 |
304 |
505 |
456 |
271 |
106 |
14 |
1 |
| Heating Degree Days |
1705 |
1403 |
1203 |
804 |
518 |
229 |
78 |
108 |
279 |
614 |
1020 |
1522 |
| Cooling Degree Days |
0 |
0 |
0 |
0 |
0 |
10 |
106 |
84 |
6 |
0 |
0 |
0 |
| Ave Precipitation (") |
0.92 |
0.74 |
1.92 |
2.23 |
3.09 |
3.66 |
3.49 |
3.99 |
3.92 |
2.29 |
1.63 |
1.03 |
| Ave Snowfall (") |
11.7 |
7.9 |
8.8 |
2.7 |
0.1 |
0.0 |
0.0 |
0.0 |
0.0 |
0.1 |
5.3 |
11.7 |
Data from the weather station at Superior, latitude 46°42' N, longitude 92°01' W, elevation 630 ft.
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