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Portage County Climate

Portage County, Wisconsin

JanFebMarAprMayJunJulAugSepOctNovDec44.2°AVG °F

Avg Annual Temp

44.2°F

Annual Precip

34.0"

Annual Snowfall

48.7"

Extreme Heat Days

4.1

days >= 90°F/yr

Monthly Temperature

54.4°F avgJFMAMJJASOND

Precipitation Calendar

Dry
Wet❄= snowfall
❄1.2"
❄1.1"
❄1.8"
❄3.3"
4.0"
4.7"
3.8"
3.9"
3.7"
❄2.9"
❄2.0"
❄1.6"
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Seasonal Overview

Comfort ZoneSpring30°56°9.1"Summer66°70°12.4"Fall34°60°8.6"Winter15°22°3.9"20°40°60°80°100°

National Comparison

Warmer than 10% of US counties
Wetter than 32% of US counties
More seasonal variation than 86% of US counties

Climate Profile

About Portage County Weather

A Classic Northern Humid Continental Climate

Portage County's 44.2°F average temperature sits roughly 10 degrees below the national median. This humid continental climate experiences sharp seasonal shifts throughout the year.

Matching the Wisconsin State Average

The county closely mirrors the Wisconsin state average temperature of 44.4°F. It sits in the middle of the pack for temperature across the state's 72 counties.

Consistent Central Wisconsin Weather Patterns

Portage sees 34.0 inches of annual precipitation, nearly identical to the state average. This aligns closely with neighboring Wood County's central Wisconsin climate profile.

Cold Winters and Mild Summers

Winters are cold with an average temperature of 18.6°F and 48.7 inches of snowfall. Residents enjoy mild summers with only 4 days hitting 90°F or higher.

Prepare for Snow and Deep Freezes

Homeowners should prioritize high-quality insulation to handle the nearly 50 inches of snow. Modern HVAC systems help manage the occasional heat spikes during July's 69.7°F average.

Frequently Asked Questions

What is the average temperature in Portage County?
The average annual temperature in Portage County, WI is 44.2°F, based on NOAA 30-year climate normals (1991-2020).
How much rain does Portage County get?
Portage County receives an average of 34.0 inches of precipitation per year, including both rain and meltwater from snow. This is based on NOAA 30-year climate normals.
Does it snow in Portage County?
Yes, Portage County receives an average of 48.7 inches of snowfall per year according to NOAA climate normals.
How hot does Portage County get in summer?
The average summer temperature (June-August) in Portage County is 67.8°F. The county experiences an average of 4.1 days per year above 90°F.
How cold are winters in Portage County?
The average winter temperature (December-February) in Portage County is 18.6°F. January, typically the coldest month, averages 15.3°F.

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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.

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