Winneshiek County Climate
Winneshiek County, Iowa
Avg Annual Temp
48.5°F
Annual Precip
37.6"
Annual Snowfall
37.5"
Extreme Heat Days
12.2
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Winneshiek County Weather
Winneshiek County's Cool Temperate Climate
Winneshiek County averages 48.5°F annually, sitting below the national median. It experiences the sharp, scenic seasonal changes typical of the Driftless Area.
Near the State Average Temperature
The county's 48.5°F average is nearly identical to the Iowa state average of 48.0°F. It receives slightly more precipitation than the state norm, totaling 37.6 inches.
Warmer Than the Far North
Winneshiek is significantly warmer than Winnebago County's 44.9°F. However, it experiences similar heavy snowfall patterns found across northern Iowa.
Significant Snowfall and Cool Summers
Annual snowfall reaches 37.5 inches, paired with a January average of 19.0°F. Summer is mild, with a July average of 73.5°F and only 12 days of extreme heat.
Equip for a Long Snow Season
Robust snow tires and winter gear are essential for navigating the 37.5 inches of annual snow. Homeowners should also ensure basements are sealed against the 37.6 inches of annual rainfall.
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.