Charleston, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Charleston, a city in Mcminn County, Tennessee.
Tonight
71°F
Partly Cloudy
Partly cloudy, with a low around 71. North wind around 0 mph.
7-day forecast for Charleston
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 71°F | Partly Cloudy | 0 mph | 12% |
| Saturday | 96°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph N | 16% |
| Saturday Night | 70°F | Chance Showers And Thunderstorms | 0 to 5 mph NW | 26% |
| Sunday | 94°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph SW | 23% |
| Sunday Night | 69°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 23% |
| Monday | 94°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 mph | 48% |
| Monday Night | 68°F | Chance Showers And Thunderstorms | 0 mph | 50% |
| Tuesday | 90°F | Showers And Thunderstorms Likely | 0 mph | 71% |
| Tuesday Night | 66°F | Showers And Thunderstorms Likely | 0 mph | 71% |
| Wednesday | 85°F | Showers And Thunderstorms Likely | 0 mph | 58% |
| Wednesday Night | 63°F | Showers And Thunderstorms Likely | 0 mph | 58% |
| Thursday | 82°F | Partly Sunny then Slight Chance Rain Showers | 0 to 5 mph N | 16% |
| Thursday Night | 61°F | Slight Chance Rain Showers then Partly Cloudy | 0 to 5 mph N | 16% |
| Friday | 80°F | Mostly Sunny | 0 to 10 mph N | 12% |
Forecast source: National Weather Service (api.weather.gov) for Charleston (35.286, -84.761). Updated through the day.
Growing snapshot for Charleston
Last spring frost
Apr 6
First fall frost
Oct 30
Growing season
206 days
Hardiness zone
7b
More local growing data for Charleston: nearby ZIP 37309 weather · frost dates · planting calendar · Tennessee frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Cleveland Fltr Plt, Tn (6.4 mi from Charleston). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.