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Climate Data for Oconto 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 13. 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 18 in 10 percent of the years.)
- Median growing season: 139 days. Range: 124 to 159 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°) |
24.2 |
28.4 |
38.6 |
53.1 |
66.3 |
75.7 |
81.2 |
78.1 |
69.7 |
58.2 |
42.8 |
28.8 |
| Ave Daily Low (F°) |
4.0 |
6.4 |
18.2 |
31.4 |
42.0 |
51.9 |
57.3 |
54.6 |
46.5 |
36.4 |
25.2 |
11.2 |
| Growing Degree Days |
0 |
0 |
13 |
97 |
278 |
444 |
581 |
527 |
331 |
153 |
26 |
2 |
| Heating Degree Days |
1578 |
1333 |
1135 |
681 |
351 |
105 |
14 |
46 |
213 |
549 |
930 |
1392 |
| Cooling Degree Days |
0 |
0 |
0 |
0 |
16 |
69 |
147 |
89 |
6 |
0 |
0 |
0 |
| Ave Precipitation (") |
1.50 |
1.16 |
2.08 |
2.42 |
3.28 |
3.58 |
3.42 |
3.38 |
3.51 |
2.32 |
2.35 |
1.76 |
| Ave Snowfall (") |
11.7 |
9.4 |
8.4 |
2.0 |
0.0 |
0.0 |
0.0 |
0.0 |
0.0 |
0.2 |
2.9 |
12.6 |
Data from the weather station at Oconto 4 W, latitude 44°54' N, longitude 87°57' W, elevation 660 ft.
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