Smith County Climate
Smith County, Tennessee
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
58.5°F
Annual Precip
52.5"
Annual Snowfall
1.5"
Extreme Heat Days
44
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
7b
Minimum winter temperature range for plant survival
4,450
Excellent for heat-loving crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Smith County
Climate Verdict
Smith County has a mild, with an average annual temperature of 58.5°F, moderately wet with 52.5 inches of annual precipitation, occasional hot days — 43.7 per year above 90°F, light snow averaging 1.5 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 37.6°F. summers are warm — July averages 78.1°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
Smith County closely matches the Tennessee statewide average temperature of 58.0°F, it is somewhat drier than average for Tennessee.
Climate Profile
About Smith County Weather
Classic Mid-South Climate Patterns
Smith County's 58.5°F average annual temperature is several degrees warmer than the national median. It receives 52.5 inches of precipitation, consistent with the moist subtropical climate of the American South.
Aligning With the Tennessee Average
Smith County's 58.5°F average annual temperature closely tracks the state average of 58.1°F. Its precipitation level of 52.5 inches is slightly below the state norm of 55.9 inches.
A Typical Middle Tennessee Profile
Compared to its neighbors in the Central Basin, Smith County offers a very standard regional climate. It shares the same humid summers and moderate rainfall patterns seen across the Nashville metropolitan area.
Consistent Heat and Trace Snowfall
Summers feature 44 days of extreme heat with a July average of 78.1°F. Winters are moderate at 39.9°F, and snow is rare, averaging only 1.5 inches per year.
Equip for Long Summer Humidity
Residents should focus on HVAC maintenance to handle 44 days of temperatures over 90°F. Since annual snowfall is minimal at 1.5 inches, heavy winter equipment is generally unnecessary.
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.