Butler County Climate
Butler County, Iowa
Avg Annual Temp
46.7°F
Annual Precip
36.0"
Annual Snowfall
31.6"
Extreme Heat Days
11.7
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Butler County Weather
Continental Extremes in Butler
Butler County's 46.7°F annual average is several degrees cooler than the national median of 53°F. This creates a environment where residents experience high seasonal variability and distinct weather changes.
Fitting the Northern Iowa Profile
The county averages 1.3 degrees less than the Iowa state mean of 48.0°F. Its annual precipitation of 36.0 inches almost perfectly matches the state average of 36.1 inches.
Middle of the Pack Regionally
Butler is slightly warmer than nearby Buchanan County but nearly identical to Buena Vista. With 31.6 inches of snow annually, it receives slightly less frozen precipitation than its western neighbors.
Moderate Summers and Brisk Winters
The summer average sits at 70.9°F with about 12 days of extreme heat reaching 90°F or higher. Winter temperatures dip to a 19.8°F average, with January often seeing lows around 16.2°F.
Balanced Seasonal Home Planning
A steady 31.6 inches of snow means snow removal tools are a necessity for every household. Since the county receives average Iowa rainfall, standard landscaping and drainage are typically sufficient for most properties.
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.