Marion County Climate
Marion County, Kentucky
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
55.6°F
Annual Precip
52.4"
Annual Snowfall
14.5"
Extreme Heat Days
35
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
7a
Minimum winter temperature range for plant survival
3,906
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Marion County
Climate Verdict
Marion County has a mild, with an average annual temperature of 55.6°F, moderately wet with 52.4 inches of annual precipitation, occasional hot days — 34.9 per year above 90°F, light snow averaging 14.5 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 33.9°F. summers are warm — July averages 76.2°F. The 42°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
The moderate temperatures support hiking, cycling, and camping comfortably in spring, summer, and fall.
Regional Context
Marion County closely matches the Kentucky statewide average temperature of 56.0°F, it is somewhat wetter than average for Kentucky.
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 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.