Lewis County Climate
Lewis County, Tennessee
Avg Annual Temp
58.4°F
Annual Precip
57.1"
Annual Snowfall
—
Extreme Heat Days
26
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Lewis County Weather
A mild subtropical interior climate
Lewis County maintains an annual average temperature of 58.4°F, which is notably warmer than the national median. This climate is typical for the interior South, featuring long growing seasons and mild winters.
Typical Tennessee temperature profile
Lewis County stays just above the state average of 58.1°F with its 58.4°F annual mean. However, it receives 57.1 inches of rain, making it wetter than the average Tennessee locale.
Moderate heat compared to neighbors
While neighboring counties may see more extreme spikes, Lewis County averages 26 days of 90°F heat per year. This is significantly lower than some West Tennessee counties that see nearly double that amount.
Warm summers and wet winters
The summer average of 75.9°F is moderated by the region's 57.1 inches of annual precipitation. Winters are soft, with January temperatures averaging 37.8°F and very little recorded snowfall.
Rain gear and cooling systems
With precipitation levels exceeding the state average, residents should prioritize roof and gutter maintenance. The 26 days of extreme heat also require reliable air conditioning through the peak of July.
Frequently Asked Questions
What is the average temperature in Lewis County?
How much rain does Lewis County get?
How hot does Lewis County get in summer?
How cold are winters in Lewis County?
Track your own weather in Lewis County
Ambient Weather personal weather stations give you hyperlocal climate data.
Sponsored
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.