Fincastle, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fincastle, a community in Campbell County, Tennessee.
Overnight
68°F
Partly Cloudy
Partly cloudy, with a low around 68. Wind around 0 mph.
7-day forecast for Fincastle
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 68°F | Partly Cloudy | 0 mph | 2% |
| Saturday | 90°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 mph | 32% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 28% |
| Sunday | 89°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph S | 35% |
| Sunday Night | 67°F | Chance Showers And Thunderstorms | 0 mph | 35% |
| Monday | 88°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 mph | 53% |
| Monday Night | 67°F | Chance Showers And Thunderstorms | 0 mph | 53% |
| Tuesday | 83°F | Showers And Thunderstorms | 0 mph | 77% |
| Tuesday Night | 64°F | Showers And Thunderstorms | 0 mph | 77% |
| Wednesday | 78°F | Rain Showers Likely | 0 mph | 66% |
| Wednesday Night | 60°F | Showers And Thunderstorms Likely | 0 mph | 66% |
| Thursday | 76°F | Chance Rain Showers | 0 to 5 mph N | 27% |
| Thursday Night | 58°F | Chance Rain Showers then Partly Cloudy | 0 to 5 mph N | 26% |
| Friday | 76°F | Mostly Sunny | 0 to 5 mph N | 12% |
Forecast source: National Weather Service (api.weather.gov) for Fincastle (36.404, -84.048). Updated through the day.
Growing snapshot for Fincastle
Last spring frost
Apr 18
First fall frost
Oct 24
Growing season
187 days
Hardiness zone
7a
More local growing data for Fincastle: nearby ZIP 37766 weather · frost dates · planting calendar · Tennessee frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Newcomb, Tn (12 mi from Fincastle). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.