Charleston, TN Weather & Growing Conditions
Tonight
70°F
Isolated Showers And Thunderstorms then Partly Cloudy
Isolated showers and thunderstorms before 7pm. Partly cloudy, with a low around 70. Heat index values as high as 101. North wind 0 to 5 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 70°F | Isolated Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph N | 16% |
| Saturday | 97°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph N | 15% |
| Saturday Night | 69°F | Chance Showers And Thunderstorms | 0 to 5 mph N | 25% |
| Sunday | 95°F | Sunny then Slight Chance Showers And Thunderstorms | 0 mph | 24% |
| Sunday Night | 68°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 24% |
| Monday | 95°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 mph | 49% |
| Monday Night | 68°F | Chance Showers And Thunderstorms | 0 mph | 51% |
| Tuesday | 91°F | Showers And Thunderstorms Likely | 0 mph | 71% |
| Tuesday Night | 65°F | Showers And Thunderstorms Likely | 0 mph | 71% |
| Wednesday | 85°F | Showers And Thunderstorms Likely | 0 mph | 58% |
| Wednesday Night | 62°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 | 60°F | Slight Chance Rain Showers then Partly Cloudy | 0 to 5 mph N | 16% |
| Friday | 81°F | Mostly Sunny | 0 to 5 mph N | 13% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Charleston, TN
Last spring frost
Apr 6
First fall frost
Oct 30
Growing season
206 days
Hardiness zone
7b
Explore more for Charleston, TN: full frost dates · planting calendar · Tennessee frost dates
Climate data from the nearest NOAA station, Cleveland Fltr Plt, Tn (5.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.