Fond du Lac County Climate
Fond du Lac County, Wisconsin
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
45.5°F
Annual Precip
30.4"
Annual Snowfall
37.8"
Extreme Heat Days
6
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
5a
Minimum winter temperature range for plant survival
2,464
Favors cool-season crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Fond du Lac County
Climate Verdict
Fond du Lac County has a cool, averaging 45.5°F annually, moderate rainfall of 30.4 inches per year, rare extreme heat with only 5.566666666666667 days above 90°F annually, moderate snowfall of 37.8 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 17.7°F. summers are warm — July averages 70.5°F. Residents experience a substantial 53°F difference between winter and summer.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Fond du Lac County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Fond du Lac County closely matches the Wisconsin statewide average temperature of 44.4°F, it is somewhat drier than average for Wisconsin.
Climate Profile
About Fond du Lac County Weather
A Classic Northern Climate
Fond du Lac County records an annual average temperature of 45.5°F, following the cooler-than-average trend of the Great Lakes region. Its precipitation levels of 30.4 inches sit below the national average for humid continental zones.
Warmer Than the State Median
At 45.5°F, the county is slightly warmer than the 44.4°F Wisconsin state average. However, it is drier than many of its peers, receiving about 4 inches less annual precipitation than the state average.
Drier than Green Lake
Fond du Lac receives 30.4 inches of precipitation, notably less than Green Lake’s 36.0 inches. It also sees less snow than its western neighbor, averaging 37.8 inches compared to Green Lake's 45.5 inches.
Stable Summers and Cold Winters
July averages a comfortable 70.5°F, and the county typically sees 6 days of extreme heat above 90°F. Winter temperatures average 20.8°F, which is relatively mild compared to the far northern reaches of the state.
Prepare for Lake-Effect Shifts
Heating systems should be optimized for a January average of 17.7°F. While snowfall is moderate at 37.8 inches, residents should remain prepared for sudden winter storms typical of the Fox Valley area.
Frequently Asked Questions
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Data sources: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020. Forecast and alert data from National Weather Service API. Air quality data from Open-Meteo.
Climate normals are 30-year averages of weather variables. Station data is aggregated to county level. Forecasts and alerts are fetched live and may change frequently. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.