Cannon County Climate
Cannon County, Tennessee
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
58.4°F
Annual Precip
57.6"
Annual Snowfall
—
Extreme Heat Days
55
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
7b
Minimum winter temperature range for plant survival
4,417
Excellent for heat-loving crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Cannon County
Climate Verdict
Cannon County has a mild, with an average annual temperature of 58.4°F, very wet conditions receiving 57.6 inches of precipitation annually, occasional hot days — 55.2 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 38.1°F. summers are warm — July averages 77.6°F. The 39°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
Cannon County closely matches the Tennessee statewide average temperature of 58.0°F, the county experiences 18.740071684587832 more extreme heat days than the state average.
Climate Profile
About Cannon County Weather
Warmer and Rainier Than the U.S. Median
Cannon County’s 58.4°F average temperature is over 3 degrees warmer than the national median. It is a high-precipitation county, receiving 57.6 inches of rain annually.
Slightly Above the Tennessee Temperature Average
Cannon is just 0.3 degrees warmer than the Tennessee state average. It receives nearly 2 inches more precipitation than the state norm of 55.9 inches.
The Regional Leader in Extreme Heat
Cannon faces 55 days of extreme heat, more than any other county in this group. While its annual average is similar to Anderson, its summer peaks are much more frequent.
Nearly Two Months of Extreme Heat
July averages 77.6°F, but the real story is the 55 days reaching 90°F or higher. Winters are mild at 40.3°F, though historical snowfall data for the county is limited.
Prepare for Prolonged Summer Heat Waves
Residents must maintain high-performance air conditioning to navigate the 55 days of extreme heat. Given the 57.6 inches of rain, keeping a waterproof emergency kit and clear drainage is also vital.
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.