Anderson County Climate
Anderson County, Tennessee
Avg Annual Temp
58.0°F
Annual Precip
57.6"
Annual Snowfall
3.8"
Extreme Heat Days
33.5
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Anderson County Weather
Warmer and Wetter Than the National Median
Anderson County's 58.0°F average annual temperature sits 3 degrees above the national median. This humid subtropical climate receives 57.6 inches of rain, far exceeding the typical U.S. county.
A Mirror of the Tennessee State Average
The county's 58.0°F average temperature almost perfectly matches the Tennessee state average of 58.1°F. However, it is slightly wetter than its peers, receiving nearly 2 inches more rain than the state average.
Cooler Highlands Compared to Southern Neighbors
Anderson remains cooler than nearby Bradley County by 1.6 degrees. It serves as a middle ground between the warmer Tennessee Valley and the cooler ridge lines of Campbell County to the north.
Steamy Summers and Mild Mountain Winters
July averages 76.9°F with 34 days of extreme heat reaching 90°F or higher. Winters are relatively gentle, averaging 39.6°F with a light 3.8 inches of annual snowfall.
Manage Humidity and Occasional Heat Waves
Residents should prioritize dehumidification and HVAC maintenance to handle over a month of 90-degree days. The 57.6 inches of rain also necessitates robust gutter systems and drainage planning.
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.