Sweetwater, TN Weather & Growing Conditions
Today
87°F
Mostly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 87. Northeast wind around 0 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 87°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 mph | 38% |
| Tonight | 68°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 31% |
| Wednesday | 86°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph S | 54% |
| Wednesday Night | 68°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 49% |
| Thursday | 87°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 50% |
| Thursday Night | 69°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph S | 50% |
| Friday | 88°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 40% |
| Friday Night | 69°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 40% |
| Saturday | 88°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 45% |
| Saturday Night | 69°F | Chance Showers And Thunderstorms | 0 mph | 45% |
| Sunday | 88°F | Chance Showers And Thunderstorms | 0 mph | 40% |
| Sunday Night | 70°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 40% |
| Monday | 88°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 41% |
| Monday Night | 71°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SW | 41% |
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 Aug 4, 2026.