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
89°F
Sunny
Sunny, with a high near 89. Heat index values as high as 98. North northeast wind 0 to 5 mph.
7-day forecast for South Carthage
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 89°F | Sunny | 0 to 5 mph NNE | 11% |
| Tonight | 68°F | Patchy Fog | 0 mph | 14% |
| Wednesday | 89°F | Chance Showers And Thunderstorms | 0 mph | 44% |
| Wednesday Night | 69°F | Chance Showers And Thunderstorms then Patchy Fog | 0 mph | 31% |
| Thursday | 91°F | Patchy Fog then Chance Showers And Thunderstorms | 0 to 5 mph SSW | 28% |
| Thursday Night | 70°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 28% |
| Friday | 91°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 5 mph SSW | 38% |
| Friday Night | 69°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 38% |
| Saturday | 90°F | Chance Showers And Thunderstorms | 0 to 5 mph SSW | 57% |
| Saturday Night | 70°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 0 mph | 57% |
| Sunday | 90°F | Chance Showers And Thunderstorms | 0 to 5 mph SSW | 34% |
| Sunday Night | 71°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 34% |
| Monday | 91°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph SSW | 23% |
| Monday Night | 72°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 23% |
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 Aug 4, 2026.