South Carthage, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for South Carthage, a town in Smith County, Tennessee.
This Afternoon
97°F
Sunny
Sunny, with a high near 97. Heat index values as high as 104. Northwest wind around 0 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for South Carthage
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 97°F | Sunny | 0 mph | 11% |
| Tonight | 70°F | Mostly Clear then Patchy Fog | 0 mph | 12% |
| Saturday | 97°F | Patchy Fog then Slight Chance Showers And Thunderstorms | 0 mph | 16% |
| Saturday Night | 70°F | Partly Cloudy | 0 mph | 10% |
| Sunday | 97°F | Mostly Sunny | 0 to 5 mph SSW | 6% |
| Sunday Night | 69°F | Partly Cloudy | 0 mph | 6% |
| Monday | 95°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 34% |
| Monday Night | 67°F | Chance Showers And Thunderstorms | 0 to 5 mph ESE | 49% |
| Tuesday | 88°F | Showers And Thunderstorms Likely | 0 to 5 mph W | 61% |
| Tuesday Night | 63°F | Showers And Thunderstorms Likely | 0 to 5 mph N | 61% |
| Wednesday | 83°F | Chance Rain Showers | 0 to 5 mph NNW | 37% |
| Wednesday Night | 60°F | Chance Rain Showers | 0 to 5 mph N | 30% |
| Thursday | 79°F | Slight Chance Rain Showers then Mostly Sunny | 0 to 5 mph N | 15% |
| Thursday Night | 59°F | Partly Cloudy | 0 to 5 mph NNE | 9% |
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 Sep 19, 2026.