Butler County Climate
Butler County, Iowa
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
46.7°F
Annual Precip
36.0"
Annual Snowfall
31.6"
Extreme Heat Days
12
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
5a
Minimum winter temperature range for plant survival
2,854
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Butler County
Climate Verdict
Butler County has a cool, averaging 46.7°F annually, moderate rainfall of 36.0 inches per year, rare extreme heat with only 11.7 days above 90°F annually, moderate snowfall of 31.6 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 16.2°F. summers are warm — July averages 72.7°F. Residents experience a substantial 57°F difference between winter and summer.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Butler County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Butler County closely matches the Iowa statewide average temperature of 48.0°F.
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 sources: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020. Forecast and alert data from National Weather Service API. Air quality data from Open-Meteo.
Climate normals are 30-year averages of weather variables. Station data is aggregated to county level. Forecasts and alerts are fetched live and may change frequently. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.