Mountain City, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mountain City, a town in Johnson County, Tennessee.
Today
81°F
Mostly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after noon. Mostly sunny, with a high near 81. Southeast wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Mountain City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 81°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 mph SE | 48% |
| Tonight | 64°F | Chance Showers And Thunderstorms | 0 to 5 mph SE | 44% |
| Wednesday | 81°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph SE | 66% |
| Wednesday Night | 64°F | Showers And Thunderstorms Likely then Partly Cloudy | 0 to 5 mph S | 55% |
| Thursday | 81°F | Showers And Thunderstorms | 0 to 5 mph S | 83% |
| Thursday Night | 64°F | Showers And Thunderstorms then Mostly Cloudy | 0 mph | 83% |
| Friday | 82°F | Chance Showers And Thunderstorms | 0 to 5 mph SW | 64% |
| Friday Night | 64°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 0 mph | 64% |
| Saturday | 82°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph SW | 75% |
| Saturday Night | 64°F | Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 0 mph | 75% |
| Sunday | 82°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 54% |
| Sunday Night | 65°F | Chance Showers And Thunderstorms | 0 mph | 54% |
| Monday | 83°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 5 mph W | 43% |
| Monday Night | 66°F | Chance Showers And Thunderstorms | 0 mph | 43% |
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 Aug 4, 2026.