McMinn County Climate
McMinn County, Tennessee
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
58.8°F
Annual Precip
60.4"
Annual Snowfall
3.6"
Extreme Heat Days
39
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
7b
Minimum winter temperature range for plant survival
4,495
Excellent for heat-loving crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: McMinn County
Climate Verdict
McMinn County has a mild, with an average annual temperature of 58.8°F, very wet conditions receiving 60.4 inches of precipitation annually, occasional hot days — 38.7 per year above 90°F, light snow averaging 3.6 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 38.4°F. summers are warm — July averages 77.9°F. The 40°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
McMinn County closely matches the Tennessee statewide average temperature of 58.0°F, it is somewhat wetter than average for Tennessee.
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 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.