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Climate Data for Fond du Lac 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: April 30. Last Spring Frost Zones.
- (The last frost occurs on or after May 9 in 10 percent of the years.)
- Median date of first frost in the fall: October 13. First Fall Frost Zones.
- (The first frost occurs on or before September 29 in 10 percent of the years.)
- Median growing season: 166 days. Range: 149 to 187 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°) |
24.3 |
28.5 |
40.2 |
54.7 |
68.0 |
77.4 |
82.0 |
79.2 |
70.7 |
59.0 |
43.6 |
29.3 |
| Ave Daily Low (F°) |
7.9 |
11.7 |
23.3 |
35.9 |
46.9 |
56.6 |
61.9 |
59.8 |
51.8 |
41.1 |
29.0 |
14.2 |
| Growing Degree Days |
0 |
1 |
26 |
117 |
315 |
509 |
664 |
597 |
374 |
170 |
31 |
3 |
| Heating Degree Days |
1516 |
1254 |
1029 |
591 |
271 |
54 |
6 |
22 |
129 |
469 |
861 |
1339 |
| Cooling Degree Days |
0 |
0 |
0 |
0 |
39 |
114 |
223 |
161 |
18 |
7 |
0 |
0 |
| Ave Precipitation (") |
0.94 |
0.90 |
1.77 |
2.58 |
3.07 |
3.49 |
3.23 |
3.95 |
3.75 |
2.36 |
1.86 |
1.46 |
| Ave Snowfall (") |
9.3 |
6.9 |
6.5 |
1.0 |
0.1 |
0.0 |
0.0 |
0.0 |
0.0 |
0.1 |
2.3 |
9.8 |
Data from the weather station at Fond du Lac, latitude 43°48' N, longitude 88°27' W, elevation 760 ft.
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