Chester County Climate
Chester County, Tennessee
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
58.1°F
Annual Precip
61.8"
Annual Snowfall
—
Extreme Heat Days
43
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
7b
Minimum winter temperature range for plant survival
4,379
Excellent for heat-loving crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Chester County
Climate Verdict
Chester County has a mild, with an average annual temperature of 58.1°F, very wet conditions receiving 61.8 inches of precipitation annually, occasional hot days — 42.5 per year above 90°F. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 37.3°F. summers are warm — July averages 77.9°F. The 41°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
Chester County closely matches the Tennessee statewide average temperature of 58.0°F, it is also noticeably wetter, receiving 6.2 inches more precipitation than the state average.
Climate Profile
About Chester County Weather
Classic Southern Warmth Above Median
Chester County’s 58.1°F average temperature is significantly warmer than the national median. The region experiences high moisture levels, totaling 61.8 inches of precipitation annually.
Perfectly Aligned with State Temperature
The county’s average temperature matches the Tennessee state average of 58.1°F exactly. However, it is much wetter than the state average, receiving nearly 6 additional inches of rain each year.
Wetter Conditions than West Tennessee Neighbors
Its 61.8 inches of rain makes it one of the wettest counties in the area compared to Carroll’s 55.9 inches. It shares a similar heat profile with 43 extreme heat days annually.
Steamy Summers and Mild Winters
July peaks at 77.9°F, while the summer average holds steady at 76.2°F. Winters remain relatively warm with a January average of 37.3°F and a winter mean of 39.4°F.
Manage High Moisture and Heat
Residents should focus on home drainage and mold prevention due to the 61.8 inches of annual rainfall. With 43 days of extreme heat, reliable air conditioning is essential for summer comfort.
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.