McMinn County Climate
McMinn County, Tennessee
Avg Annual Temp
58.8°F
Annual Precip
60.4"
Annual Snowfall
3.6"
Extreme Heat Days
38.7
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About McMinn County Weather
A Pleasant and Wet Valley Climate
McMinn County averages 58.8°F annually, reflecting a warmer-than-average national profile. This region is notably wet, receiving 60.4 inches of annual precipitation, which is well above the national median.
Beating the State Average in Rainfall
While McMinn's temperature of 58.8°F is close to the state average of 58.1°F, it is much wetter than most of Tennessee. The county receives 60.4 inches of rain annually, compared to the state average of 55.9 inches.
Lower Heat Than West Tennessee Peers
McMinn is cooler in the summer than Madison County, recording 39 extreme heat days compared to Madison’s 60. It maintains a similar winter profile to Loudon County with roughly 3.6 to 4 inches of snow.
Humid Summers and Chilly Januarys
July averages 77.9°F, supported by 39 days of extreme heat that drive local humidity. Winter sees a January average of 38.4°F and 3.6 inches of snow, providing a true four-season experience.
Managing High Moisture and Occasional Snow
Residents must focus on moisture control and mold prevention given the 60.4 inches of annual rain. It is also wise to keep a snow shovel and salt on hand for the 3.6 inches of expected winter accumulation.
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.