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Climate Data for Marathon 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 8. Last Spring Frost Zones.
- (The last frost occurs on or after May 23 in 10 percent of the years.)
- Median date of first frost in the fall: October 2. First Fall Frost Zones.
- (The first frost occurs on or before September 21 in 10 percent of the years.)
- Median growing season: 150 days. Range: 128 to 171 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°) |
21.3 |
27.0 |
38.4 |
54.0 |
67.4 |
76.0 |
80.8 |
77.6 |
67.9 |
56.1 |
39.9 |
25.5 |
| Ave Daily Low (F°) |
2.8 |
6.8 |
19.4 |
33.3 |
44.4 |
53.5 |
59.1 |
56.8 |
48.0 |
37.7 |
25.1 |
9.8 |
| Growing Degree Days |
0 |
1 |
16 |
111 |
295 |
460 |
610 |
537 |
308 |
129 |
18 |
1 |
| Heating Degree Days |
1643 |
1349 |
1119 |
639 |
313 |
85 |
18 |
44 |
217 |
561 |
975 |
1466 |
| Cooling Degree Days |
0 |
0 |
0 |
0 |
31 |
79 |
173 |
112 |
7 |
0 |
0 |
0 |
| Ave Precipitation (") |
0.94 |
0.87 |
1.96 |
2.75 |
3.62 |
4.01 |
3.89 |
4.38 |
4.33 |
2.64 |
2.00 |
1.43 |
| Ave Snowfall (") |
11.7 |
8.2 |
10.3 |
2.3 |
0.1 |
0.0 |
0.0 |
0.0 |
0.0 |
0.8 |
5.4 |
13.2 |
Data from the weather station at Wausau FAA Airport, latitude 44°55' N, longitude 89°37' W, elevation 1196 ft.
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