Charleston, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Charleston, a city in Mcminn County, Tennessee.
This Afternoon
79°F
Mostly Sunny
Mostly sunny. High near 79, with temperatures falling to around 75 in the afternoon. Southeast wind 10 to 15 mph, with gusts as high as 25 mph.
7-day forecast for Charleston
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 79°F | Mostly Sunny | 10 to 15 mph SE | 2% |
| Tonight | 64°F | Mostly Cloudy then Chance Showers And Thunderstorms | 5 to 10 mph SE | 30% |
| Wednesday | 72°F | Showers And Thunderstorms | 10 mph S | 93% |
| Wednesday Night | 61°F | Showers And Thunderstorms then Mostly Cloudy | 0 to 5 mph S | 78% |
| Thursday | 75°F | Partly Sunny | 0 to 5 mph W | 14% |
| Thursday Night | 50°F | Mostly Cloudy | 0 mph | 10% |
| Friday | 73°F | Mostly Sunny | 0 to 5 mph NW | 4% |
| Friday Night | 44°F | Mostly Clear | 0 to 5 mph N | 1% |
| Saturday | 65°F | Mostly Sunny | 0 to 10 mph N | 1% |
| Saturday Night | 37°F | Partly Cloudy | 0 to 5 mph N | 1% |
| Sunday | 65°F | Mostly Sunny | 0 to 5 mph N | 5% |
| Sunday Night | 35°F | Partly Cloudy | 0 mph | 6% |
| Monday | 64°F | Mostly Sunny | 0 to 5 mph N | 6% |
| Monday Night | 35°F | Mostly Clear | 0 mph | 3% |
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 Nov 3, 2026.