Green Lake County Climate
Green Lake County, Wisconsin
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
45.9°F
Annual Precip
36.0"
Annual Snowfall
45.5"
Extreme Heat Days
10
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
5a
Minimum winter temperature range for plant survival
2,541
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Green Lake County
Climate Verdict
Green Lake County has a cool, averaging 45.9°F annually, moderate rainfall of 36.0 inches per year, rare extreme heat with only 9.65 days above 90°F annually, moderate snowfall of 45.5 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 17.8°F. summers are warm — July averages 71.1°F. Residents experience a substantial 53°F difference between winter and summer.
Outdoor & Gardening Guidance
Winter sports enthusiasts benefit from reliable snow cover for 3-4 months annually.
Regional Context
Green Lake County closely matches the Wisconsin statewide average temperature of 44.4°F.
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 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.