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Climate Data for Ashland 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 31. Last Spring Frost Zones.
- (The last frost occurs on or after June 21 in 10 percent of the years.)
- Median date of first frost in the fall: September 18. First Fall Frost Zones.
- (The first frost occurs on or before September 5 in 10 percent of the years.)
- Median growing season: 105 days. Range: 87 to 127 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°) |
19.9 |
27.1 |
36.8 |
50.2 |
64.8 |
73.9 |
79.3 |
77.1 |
67.8 |
56.2 |
38.2 |
24.8 |
| Ave Daily Low (F°) |
-0.4 |
4.8 |
17.0 |
28.6 |
39.3 |
49.0 |
55.1 |
53.7 |
45.1 |
34.2 |
22.2 |
7.3 |
| Growing Degree Days |
0 |
1 |
13 |
91 |
263 |
403 |
543 |
506 |
311 |
133 |
18 |
0 |
| Heating Degree Days |
1715 |
1374 |
1182 |
768 |
412 |
138 |
48 |
71 |
267 |
614 |
1044 |
1517 |
| Cooling Degree Days |
0 |
0 |
0 |
0 |
10 |
31 |
116 |
83 |
10 |
0 |
0 |
0 |
| Ave Precipitation (") |
1.26 |
0.81 |
1.86 |
2.07 |
2.74 |
3.65 |
4.03 |
3.93 |
3.70 |
2.51 |
2.36 |
1.10 |
| Ave Snowfall (") |
14.9 |
8.9 |
9.9 |
4.1 |
0.0 |
0.0 |
0.0 |
0.0 |
0.0 |
0.2 |
7.6 |
12.4 |
Data from the weather station at Ashland Exp Farm, latitude 46°34' N, longitude 90°58' W, elevation 650 ft.
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