Sweetwater, TN Weather & Growing Conditions
Today
70°F
Showers And Thunderstorms
Showers and thunderstorms. Cloudy, with a high near 70. South wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 70°F | Showers And Thunderstorms | 10 to 20 mph S | 85% |
| Tonight | 60°F | Showers And Thunderstorms | 0 to 10 mph SW | 93% |
| Thursday | 72°F | Partly Sunny | 0 to 5 mph W | 6% |
| Thursday Night | 49°F | Partly Cloudy | 0 mph | 4% |
| Friday | 70°F | Sunny | 0 to 5 mph N | 4% |
| Friday Night | 42°F | Mostly Clear | 0 to 5 mph N | 1% |
| Saturday | 61°F | Mostly Sunny | 5 to 10 mph N | 1% |
| Saturday Night | 35°F | Partly Cloudy | 0 to 5 mph N | 0% |
| Sunday | 59°F | Mostly Sunny | 0 to 5 mph NE | 0% |
| Sunday Night | 34°F | Mostly Clear | 0 to 5 mph N | 1% |
| Monday | 61°F | Sunny | 0 to 5 mph N | 1% |
| Monday Night | 34°F | Mostly Clear | 0 mph | 1% |
| Tuesday | 65°F | Sunny | 0 mph | 2% |
| Tuesday Night | 37°F | Mostly Clear | 0 mph | 2% |
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 Nov 4, 2026.