Marion County Climate
Marion County, Kentucky
Avg Annual Temp
55.6°F
Annual Precip
52.4"
Annual Snowfall
14.5"
Extreme Heat Days
34.9
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Marion County Weather
A Typical Mid-Latitude Climate Profile
Marion County's average annual temperature of 55.6°F sits slightly above the national median, characterizing its humid subtropical environment. This temperate climate experiences the full range of four distinct seasons common to the American interior.
Cooler Than the State Average
The county's 55.6°F annual average is roughly half a degree cooler than the Kentucky state average of 56.2°F. It occupies a middle-ground position among the Commonwealth's 120 counties regarding overall warmth.
Wetter Than Its Regional Neighbors
With 52.4 inches of annual precipitation, Marion is wetter than the state average of 50.6 inches. While it shares the central Kentucky heat, it receives significantly more snowfall than western neighbors like McLean County.
Steamy Summers and Snowy Winters
Residents face 35 extreme heat days above 90°F during summers that average 74.5°F. Winters bring a January average of 33.9°F and a substantial 14.5 inches of annual snowfall.
Prepare for Moisture and Extremes
Robust HVAC systems are necessary to manage over a month of extreme heat and winter lows. High annual precipitation requires well-maintained gutters and localized drainage planning for homeowners.
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.