Kewaunee County Climate
Kewaunee County, Wisconsin
Avg Annual Temp
44.3°F
Annual Precip
31.1"
Annual Snowfall
48.1"
Extreme Heat Days
2.3
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Kewaunee County Weather
Lake-Influenced Northern Climate
Kewaunee County averages 44.3°F, nearly 10 degrees cooler than the national median. Lake Michigan significantly moderates local temperatures throughout the year.
A Perfect State Average
The county's 44.3°F annual temperature is almost exactly the same as the Wisconsin state average of 44.4°F. It provides a balanced look at the state's lake-side climate.
Cooler and Drier than Southern Peers
Kewaunee is much cooler than Kenosha County, which averages 48.3°F. It is also one of the driest in the region with only 31.1 inches of annual precipitation.
Cool Summers and Lake Snow
The lake keeps summer heat in check with only 2 days above 90°F and a July average of 68.2°F. Winters are snowy, totaling 48.1 inches despite a relatively mild 19.3°F January.
Focus on Winter Gear
With only 2 days of extreme heat, AC is less critical than a high-quality winter coat. Residents should prioritize snow tires for the 48.1 inches of lake-effect snowfall.
Frequently Asked Questions
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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.