Sweetwater, TN Weather & Growing Conditions
This Afternoon
94°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly sunny, with a high near 94. Heat index values as high as 96. North wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 94°F | Chance Showers And Thunderstorms | 5 mph N | 29% |
| Tonight | 69°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph N | 26% |
| Sunday | 93°F | Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph SW | 15% |
| Sunday Night | 68°F | Partly Cloudy | 0 mph | 13% |
| Monday | 92°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 mph | 42% |
| Monday Night | 67°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 0 mph | 60% |
| Tuesday | 87°F | Showers And Thunderstorms | 0 mph | 77% |
| Tuesday Night | 64°F | Showers And Thunderstorms | 0 mph | 77% |
| Wednesday | 82°F | Showers And Thunderstorms | 0 mph | 80% |
| Wednesday Night | 62°F | Showers And Thunderstorms | 0 mph | 80% |
| Thursday | 78°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 0 to 5 mph NW | 41% |
| Thursday Night | 59°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 24% |
| Friday | 79°F | Mostly Sunny | 0 to 5 mph NW | 14% |
| Friday Night | 57°F | Partly Cloudy | 0 to 5 mph N | 14% |
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 (10.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.