Oconto County Climate
Oconto County, Wisconsin
Avg Annual Temp
42.9°F
Annual Precip
32.4"
Annual Snowfall
54.9"
Extreme Heat Days
4.333333333333333
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Oconto County Weather
Deeply Cool Northern Weather
Oconto County's annual average of 42.9°F sits well below the national median of roughly 54°F. This location defines the crisp, cool nature of the upper Great Lakes region.
Cooler Than the State Average
The county is colder than the Wisconsin average of 44.4°F by about 1.5 degrees. It ranks among the chillier northern counties where winter lasts longer than in the southern parts of the state.
Chillier Than Coastal Neighbors
With an average temp of 42.9°F, Oconto is significantly cooler than lakeside Ozaukee at 46.7°F. It also receives less precipitation than the state average, recording 32.4 inches annually.
Consistent Cold and Moderate Snow
Winters feature a freezing December-February average of 18.2°F and 54.9 inches of snow. Summers are pleasant and mild, averaging 66.1°F with only 4 days reaching 90°F.
Gear Up for Long Winters
The mild summers mean less air conditioning is required, but robust home insulation is essential for the 15.1°F January lows. Residents should plan for steady snow management from late autumn through spring.
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.