Green Lake County Climate
Green Lake County, Wisconsin
Avg Annual Temp
45.9°F
Annual Precip
36.0"
Annual Snowfall
45.5"
Extreme Heat Days
9.65
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Green Lake County Weather
Moderate Northern Temperatures
Green Lake County maintains an annual average temperature of 45.9°F. This keeps the county cooler than the national median but places it firmly in the productive agricultural climate of the upper Midwest.
Warmer and Wetter Than Average
The county is slightly warmer than the state average of 44.4°F and receives 36.0 inches of precipitation. This puts it 1.5 inches above the state average for annual rainfall and snow-melt.
Snowier than Fond du Lac
Green Lake receives 45.5 inches of snow annually, which is significantly more than neighboring Fond du Lac’s 37.8 inches. Despite this, the two counties share very similar average annual temperatures.
A Ten-Day Heat Peak
July brings an average temperature of 71.1°F, with about 10 days of heat reaching or exceeding 90°F. Winter averages 20.7°F, supported by a January low that typically hovers around 17.8°F.
Prepare for Seasonal Moisture
With 45.5 inches of snowfall, reliable snow removal and roof maintenance are key for local homeowners. Cooling capacity should be planned to handle the 10 days of extreme summer heat.
Frequently Asked Questions
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Track your own weather in Green Lake County
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Data source: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020.
Climate normals are 30-year averages of weather variables computed from 1991 to 2020. Station data is aggregated to county level using spatial averaging. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.