Marion County Climate
Marion County, Tennessee
Avg Annual Temp
55.9°F
Annual Precip
67.0"
Annual Snowfall
5.4"
Extreme Heat Days
5.8
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
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 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.