Sweetwater, TN Weather & Growing Conditions
Today
93°F
Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 5pm. Sunny, with a high near 93. Heat index values as high as 100. Northeast wind 0 to 5 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 93°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph NE | 20% |
| Tonight | 69°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SW | 21% |
| Sunday | 92°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph SW | 17% |
| Sunday Night | 67°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 30% |
| Monday | 91°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 36% |
| Monday Night | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 0 to 5 mph NE | 67% |
| Tuesday | 86°F | Showers And Thunderstorms | 0 to 5 mph SW | 85% |
| Tuesday Night | 64°F | Showers And Thunderstorms | 0 mph | 85% |
| Wednesday | 80°F | Showers And Thunderstorms | 0 to 5 mph W | 76% |
| Wednesday Night | 61°F | Showers And Thunderstorms | 0 mph | 76% |
| Thursday | 78°F | Slight Chance Rain Showers | 0 to 5 mph NW | 22% |
| Thursday Night | 59°F | Slight Chance Rain Showers then Partly Cloudy | 0 to 5 mph N | 22% |
| Friday | 78°F | Mostly Sunny then Slight Chance Rain Showers | 0 to 5 mph N | 17% |
| Friday Night | 57°F | Slight Chance Rain Showers then Partly Cloudy | 5 mph NE | 17% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Sweetwater, TN
Last spring frost
Apr 10
First fall frost
Oct 27
Growing season
199 days
Hardiness zone
7b
Explore more for Sweetwater, TN: full frost dates · planting calendar · Tennessee frost dates
Climate data from the nearest NOAA station, Decatur 7Ne, Tn (12 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.