Mountain City, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mountain City, a town in Johnson County, Tennessee.
This Afternoon
71°F
Sunny
Sunny. High near 71, with temperatures falling to around 66 in the afternoon. Southeast wind around 10 mph.
7-day forecast for Mountain City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 71°F | Sunny | 10 mph SE | 1% |
| Tonight | 54°F | Partly Cloudy | 5 to 10 mph SE | 2% |
| Wednesday | 67°F | Showers And Thunderstorms Likely | 10 to 15 mph SE | 56% |
| Wednesday Night | 59°F | Showers And Thunderstorms | 5 to 10 mph SE | 95% |
| Thursday | 71°F | Chance Rain Showers | 0 to 5 mph SW | 32% |
| Thursday Night | 53°F | Chance Rain Showers | 0 mph | 35% |
| Friday | 68°F | Chance Rain Showers | 0 to 5 mph W | 35% |
| Friday Night | 43°F | Partly Cloudy | 0 to 5 mph NW | 10% |
| Saturday | 60°F | Mostly Sunny | 0 to 5 mph NW | 10% |
| Saturday Night | 35°F | Partly Cloudy | 0 to 5 mph NW | 8% |
| Sunday | 59°F | Mostly Sunny | 0 to 5 mph NW | 7% |
| Sunday Night | 34°F | Mostly Clear | 0 to 5 mph W | 14% |
| Monday | 58°F | Slight Chance Rain Showers | 5 to 15 mph W | 19% |
| Monday Night | 34°F | Slight Chance Rain Showers | 0 to 10 mph W | 20% |
Forecast source: National Weather Service (api.weather.gov) for Mountain City (36.470, -81.805). Updated through the day.
Growing snapshot for Mountain City
Last spring frost
Apr 27
First fall frost
Oct 14
Growing season
170 days
Hardiness zone
7a
More local growing data for Mountain City: nearby ZIP 37683 weather · frost dates · planting calendar · Tennessee frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Mtn City 2, Tn (1.8 mi from Mountain City). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.