South Carthage, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for South Carthage, a town in Smith County, Tennessee.
Today
71°F
Showers And Thunderstorms
Showers and thunderstorms before 4pm. Cloudy. High near 71, with temperatures falling to around 67 in the afternoon. South southwest wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
7-day forecast for South Carthage
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 71°F | Showers And Thunderstorms | 5 to 15 mph SSW | 96% |
| Tonight | 45°F | Areas Of Fog | 0 to 5 mph WSW | 4% |
| Thursday | 72°F | Areas Of Fog then Mostly Sunny | 0 to 5 mph WSW | 0% |
| Thursday Night | 39°F | Areas Of Fog | 0 mph | 0% |
| Friday | 69°F | Areas Of Fog then Mostly Sunny | 0 to 5 mph NNW | 0% |
| Friday Night | 35°F | Partly Cloudy | 0 to 5 mph NNW | 0% |
| Saturday | 60°F | Mostly Sunny | 5 mph N | 0% |
| Saturday Night | 28°F | Partly Cloudy | 0 mph | 0% |
| Sunday | 60°F | Mostly Sunny | 0 to 5 mph N | 1% |
| Sunday Night | 27°F | Mostly Clear | 0 mph | 1% |
| Monday | 62°F | Sunny | 0 mph | 0% |
| Monday Night | 28°F | Mostly Clear | 0 mph | 1% |
| Tuesday | 67°F | Sunny | 0 to 5 mph W | 2% |
| Tuesday Night | 31°F | Mostly Clear | 0 mph | 0% |
Forecast source: National Weather Service (api.weather.gov) for South Carthage (36.240, -85.957). Updated through the day.
Growing snapshot for South Carthage
Last spring frost
Apr 10
First fall frost
Oct 29
Growing season
201 days
Hardiness zone
7b
More local growing data for South Carthage: nearby ZIP 37030 weather · frost dates · planting calendar · Tennessee frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Carthage, Tn (1.8 mi from South Carthage). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.