Hamblen County Climate
Hamblen County, Tennessee
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
57.8°F
Annual Precip
47.8"
Annual Snowfall
9.5"
Extreme Heat Days
19
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
7b
Minimum winter temperature range for plant survival
4,224
Excellent for heat-loving crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Hamblen County
Climate Verdict
Hamblen County has a mild, with an average annual temperature of 57.8°F, moderately wet with 47.8 inches of annual precipitation, rare extreme heat with only 19.4 days above 90°F annually, light snow averaging 9.5 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 37.0°F. summers are warm — July averages 76.5°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
Hamblen County closely matches the Tennessee statewide average temperature of 58.0°F, it is also noticeably drier, receiving 7.9 inches less precipitation than the state average, the county experiences 17.059928315412172 fewer extreme heat days than the state average.
Climate Profile
About Hamblen County Weather
Standard Mid-Latitude Climate
Hamblen County averages 57.8°F annually, which is warmer than the national median. It receives 47.8 inches of precipitation, staying below the typical Tennessee rainfall levels.
Mirroring the Tennessee State Average
The county's average temperature sits just below the state average of 58.1°F. It represents the typical transition zone between the mountains and the central basin.
Warmer than Neighboring Greene
Hamblen is more than a degree warmer on average than Greene County. It also sees more winter accumulation, with 9.5 inches of snow compared to Greene's 7.7 inches.
Snowy Winters and Hot July
Hamblen experiences nearly 10 inches of snow annually, making it one of the snowier non-mountain counties. Extreme heat is still a factor, with 19 days per year reaching at least 90°F.
Prepare for Ice and Snow
Ensure your vehicle is equipped for nearly 10 inches of annual snow and potential ice. Since precipitation is lower than the state average, drought-resistant landscaping may be beneficial for the 75.2°F summers.
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.