Mountain City, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mountain City, a town in Johnson County, Tennessee.
Tonight
63°F
Scattered Showers And Thunderstorms then Mostly Cloudy
Scattered showers and thunderstorms before midnight. Mostly cloudy, with a low around 63. Northeast wind around 0 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Mountain City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 63°F | Scattered Showers And Thunderstorms then Mostly Cloudy | 0 mph | 30% |
| Saturday | 82°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph E | 36% |
| Saturday Night | 63°F | Chance Showers And Thunderstorms | 0 to 5 mph SE | 41% |
| Sunday | 81°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph SW | 62% |
| Sunday Night | 62°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 0 mph | 62% |
| Monday | 82°F | Showers And Thunderstorms | 0 mph | 78% |
| Monday Night | 62°F | Showers And Thunderstorms | 0 mph | 78% |
| Tuesday | 76°F | Showers And Thunderstorms | 0 to 5 mph SE | 80% |
| Tuesday Night | 58°F | Showers And Thunderstorms | 5 mph SE | 80% |
| Wednesday | 69°F | Rain Showers Likely | 5 mph SE | 57% |
| Wednesday Night | 55°F | Showers And Thunderstorms Likely | 5 mph SE | 56% |
| Thursday | 69°F | Chance Rain Showers | 0 to 5 mph NE | 36% |
| Thursday Night | 52°F | Chance Rain Showers | 0 to 5 mph N | 36% |
| Friday | 70°F | Partly Sunny then Chance Rain Showers | 0 to 5 mph NW | 25% |
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 Sep 19, 2026.