Green County Climate
Green County, Wisconsin
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
47.3°F
Annual Precip
39.0"
Annual Snowfall
39.4"
Extreme Heat Days
14
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
5a
Minimum winter temperature range for plant survival
2,776
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Green County
Climate Verdict
Green County has a cool, averaging 47.3°F annually, moderate rainfall of 39.0 inches per year, rare extreme heat with only 13.95 days above 90°F annually, moderate snowfall of 39.4 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 18.9°F. summers are warm — July averages 72.3°F. Residents experience a substantial 53°F difference between winter and summer.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Green County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Green County closely matches the Wisconsin statewide average temperature of 44.4°F, it is somewhat wetter than average for Wisconsin.
Climate Profile
About Green County Weather
Approaching the National Median
Green County is one of Wisconsin's warmest spots, with an annual average temperature of 47.3°F. It still sits below the national median but experiences a more moderate climate than the rest of the state.
Warmest in the State
The county’s 47.3°F average significantly exceeds the Wisconsin state average of 44.4°F. It also receives nearly 5 inches more precipitation than the state average, totaling 39.0 inches annually.
Higher Precipitation Levels
Green County receives 39.0 inches of precipitation, which is higher than neighboring Grant County's 37.5 inches. Its snowfall of 39.4 inches is almost identical to Grant, indicating similar winter moisture.
Hot Summers and Brisk Winters
Residents face 14 days of extreme heat above 90°F, the highest in this regional set. Summers average 70.5°F, while winters stay relatively mild for Wisconsin at 22.1°F.
Prioritize Summer Cooling
Because of the 14 days of extreme heat, efficient HVAC systems are a primary concern for residents. While the 18.9°F January average is warmer than northern counties, winter gear remains necessary for the 39 inches of snow.
Frequently Asked Questions
What is the average temperature in Green County?
How much rain does Green County get?
Does it snow in Green County?
How hot does Green County get in summer?
How cold are winters in Green County?
Track your own weather in Green County
Ambient Weather personal weather stations give you hyperlocal climate data.
Sponsored
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.