Marion County Climate
Marion County, Tennessee
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
55.9°F
Annual Precip
67.0"
Annual Snowfall
5.4"
Extreme Heat Days
6
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
7b
Minimum winter temperature range for plant survival
3,766
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 55.9°F, very wet conditions receiving 67.0 inches of precipitation annually, rare extreme heat with only 5.8 days above 90°F annually, light snow averaging 5.4 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 35.4°F. summers are warm — July averages 74.0°F. The 39°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 Tennessee statewide average temperature of 58.0°F, it is also noticeably wetter, receiving 11.3 inches more precipitation than the state average, the county experiences 30.65992831541217 fewer extreme heat days than the state average.
Climate Profile
About Marion County Weather
Cooler Highs and Heavy Rainfall
Marion County offers a unique climate profile with a 55.9°F average temperature, nearly matching the national median. It stands out nationally for its high precipitation, receiving a massive 67.0 inches of rain annually.
A Refreshing Exception to State Heat
While the Tennessee average is 58.1°F, Marion County stays significantly cooler at 55.9°F. It also records 67 inches of rain, far exceeding the state average of 55.9 inches.
The Region's Cool, Wet Outlier
Compared to McMinn's 39 extreme heat days, Marion experiences only 6, likely due to its varied elevation. This makes it the wettest and one of the coolest counties in the immediate region.
Milder Summers and Snowy Winters
Summer is remarkably mild with a July average of 74.0°F and very few 90-degree days. Winter brings more snow than its neighbors, averaging 5.4 inches annually alongside a January mean of 35.4°F.
Managing High Rainfall and Winter Snow
The 67 inches of annual rain require residents to invest in heavy-duty drainage and moisture-resistant building materials. Winter weather gear is also necessary to handle the 5.4 inches of snowfall, which is high for the state.
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.