Unicoi County Climate
Unicoi County, Tennessee
Avg Annual Temp
55.4°F
Annual Precip
47.0"
Annual Snowfall
9.3"
Extreme Heat Days
17.5
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Unicoi County Weather
A Mild High-Elevation Climate
Unicoi County averages 55.4°F annually, placing it closer to the national median than most of its Tennessee neighbors. Its location in the Blue Ridge Mountains creates a cooler, temperate environment.
One of Tennessee’s Cooler Corners
At 55.4°F, Unicoi is significantly cooler than the Tennessee state average of 58.1°F. This temperature gap reflects the county's higher elevation and rugged terrain.
Cooler and Snowier than the Plateau
Unicoi stays much cooler than Williamson County, which is 3.6 degrees warmer on average. It also experiences more frequent winter weather than the flatter counties to the west.
Snowy Winters and Mild Summers
The county receives a notable 9.3 inches of annual snowfall, far more than the state's flatter regions. Summers are pleasant with only 18 days reaching 90°F, keeping July averages at a comfortable 73.8°F.
Gear Up for Mountain Winters
Residents need reliable snow removal tools and winter tires to navigate the 9.3 inches of annual snow. The low number of extreme heat days makes outdoor summer activities much more accessible than in the rest of 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.