Carthage, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Carthage, a town in Smith County, Tennessee.
Today
97°F
Mostly Sunny then Slight Chance Rain Showers
A slight chance of rain showers after 2pm. Mostly sunny. High near 97, with temperatures falling to around 92 in the afternoon. Heat index values as high as 103. West northwest wind around 0 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Carthage
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 97°F | Mostly Sunny then Slight Chance Rain Showers | 0 mph | 23% |
| Tonight | 70°F | Slight Chance Rain Showers then Mostly Clear | 0 mph | 19% |
| Sunday | 96°F | Sunny then Slight Chance Rain Showers | 0 to 5 mph SW | 18% |
| Sunday Night | 70°F | Partly Cloudy | 0 mph | 12% |
| Monday | 95°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph WSW | 26% |
| Monday Night | 66°F | Chance Showers And Thunderstorms | 0 mph | 37% |
| Tuesday | 89°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph NNE | 59% |
| Tuesday Night | 62°F | Showers And Thunderstorms Likely | 0 to 5 mph N | 59% |
| Wednesday | 81°F | Chance Rain Showers | 0 to 5 mph NNW | 52% |
| Wednesday Night | 59°F | Chance Showers And Thunderstorms | 0 to 5 mph N | 47% |
| Thursday | 80°F | Slight Chance Rain Showers | 0 to 5 mph N | 18% |
| Thursday Night | 57°F | Slight Chance Rain Showers then Partly Cloudy | 0 to 5 mph NNE | 18% |
| Friday | 79°F | Mostly Sunny | 0 to 5 mph NNE | 5% |
| Friday Night | 56°F | Partly Cloudy | 0 to 5 mph NNE | 5% |
Forecast source: National Weather Service (api.weather.gov) for Carthage (36.257, -85.943). Updated through the day.
Growing snapshot for Carthage
Last spring frost
Apr 10
First fall frost
Oct 29
Growing season
201 days
Hardiness zone
7b
More local growing data for 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 Carthage). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.