Lucas County Climate
Lucas County, Iowa
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
48.3°F
Annual Precip
37.3"
Annual Snowfall
24.1"
Extreme Heat Days
17
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
5b
Minimum winter temperature range for plant survival
2,887
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Lucas County
Climate Verdict
Lucas County has a cool, averaging 48.3°F annually, moderate rainfall of 37.3 inches per year, rare extreme heat with only 17 days above 90°F annually, moderate snowfall of 24.1 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are very cold — January averages 20.8°F. summers are warm — July averages 73.0°F. Residents experience a substantial 52°F difference between winter and summer.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Lucas County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Lucas County closely matches the Iowa statewide average temperature of 48.0°F.
Climate Profile
About Lucas County Weather
Temperate and typical of the heartland
Lucas County's 48.3°F average temperature places it below the national median for the United States. The climate is categorized as humid continental, characterized by cold winters and warm, moist summers.
Aligning with state averages
At 48.3°F, Lucas County closely mirrors the Iowa state average of 48.0°F. It also receives 37.3 inches of annual precipitation, slightly outpacing the state average of 36.1 inches.
Drier than southeastern neighbors
While Lucas is wetter than the state average, it receives about 1.3 inches less precipitation than Mahaska County to the east. It maintains 17 days of extreme heat, matching the frequency found in Louisa County.
Manageable snow and hot Julys
Lucas County sees 24.1 inches of snow annually, which is lighter than many northern Iowa counties. Summer highs are consistent, with 17 days hitting 90°F or higher.
Plan for variable winter conditions
While snowfall is moderate at 24.1 inches, winter temperatures average 24.0°F, requiring efficient home insulation. Residents should plan for hot spells in July when temperatures average 73.0°F.
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.