Lucas County Climate
Lucas County, Iowa
Avg 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
Seasonal Overview
National Comparison
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 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.