Marinette County Climate
Marinette County, Wisconsin
Avg Annual Temp
42.8°F
Annual Precip
32.9"
Annual Snowfall
50.3"
Extreme Heat Days
3.95
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Marinette County Weather
Northern Latitude with Bay Influence
Marinette County maintains an annual average of 42.8°F, placing it well into the cooler tier of U.S. counties. The climate is influenced by its northeastern position and proximity to Green Bay.
Cooler than the Southern Counties
At 42.8°F, the county is nearly two degrees cooler than the Wisconsin average of 44.4°F. Precipitation levels are steady at 32.9 inches, slightly below the 34.5-inch state mark.
The Middle Ground of the Northeast
Marinette is warmer than inland Langlade County but cooler than lakeside Manitowoc County. It serves as a middle ground for temperature and snowfall in the northeast region.
Snowy Winters and Moderate Heat
The county receives 50.3 inches of snow annually and sees January temperatures average 15.7°F. Summers are mild with a 65.6°F average and only 4 days reaching the 90°F mark.
Prioritizing Winter Ready Homes
Winter readiness is a priority with a 18.6°F winter average and over 50 inches of snow. High-efficiency heating is more important than cooling, as summer temperatures remain moderate.
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.