Unicoi County Climate
Unicoi County, Tennessee
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
55.4°F
Annual Precip
47.0"
Annual Snowfall
9.3"
Extreme Heat Days
18
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
7a
Minimum winter temperature range for plant survival
3,607
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Unicoi County
Climate Verdict
Unicoi County has a mild, with an average annual temperature of 55.4°F, moderately wet with 47.0 inches of annual precipitation, rare extreme heat with only 17.5 days above 90°F annually, light snow averaging 9.3 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 35.9°F. summers are warm — July averages 73.8°F. The 38°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
Unicoi County closely matches the Tennessee statewide average temperature of 58.0°F, it is also noticeably drier, receiving 8.6 inches less precipitation than the state average, the county experiences 18.95992831541217 fewer extreme heat days than the state average.
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 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.