Oneida County Climate
Oneida County, Wisconsin
Avg Annual Temp
40.3°F
Annual Precip
32.9"
Annual Snowfall
73.5"
Extreme Heat Days
2.5333333333333328
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Oneida County Weather
One of America’s Coldest Spots
Oneida County's annual average temperature is a bracing 40.3°F. This is more than 13 degrees colder than the national median, placing it in a truly arctic-influenced climate zone.
Well Below Wisconsin Norms
While the state average is 44.4°F, Oneida sits much lower at 40.3°F. It is one of the coldest counties in Wisconsin, characterized by long, punishing winters.
Coldest in the Northwoods
Oneida is significantly colder than neighboring Oconto (42.9°F) and Monroe (45.4°F). It also experiences higher snowfall, totaling 73.5 inches annually compared to the state's more moderate levels.
Epic Snow and Frigid Air
January temperatures average just 11.5°F, and the county is buried under six feet of snow annually. Summer is fleeting, with only 3 days per year topping 90°F and a July average of 66.1°F.
Winter Resilience is Key
High-capacity heating systems and professional-grade snow tires are mandatory here. With only 3 extreme heat days, focus home investments on winterization rather than cooling.
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.