Fincastle, TN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fincastle, a community in Campbell County, Tennessee.
Today
86°F
Mostly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 2pm. Mostly sunny. High near 86, with temperatures falling to around 83 in the afternoon. North wind around 0 mph. Chance of precipitation is 30%.
7-day forecast for Fincastle
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 mph | 33% |
| Tonight | 68°F | Chance Showers And Thunderstorms then Mostly Cloudy | 0 mph | 35% |
| Wednesday | 84°F | Showers And Thunderstorms Likely | 0 to 5 mph S | 65% |
| Wednesday Night | 68°F | Showers And Thunderstorms Likely then Partly Cloudy | 0 mph | 60% |
| Thursday | 84°F | Chance Showers And Thunderstorms | 0 to 5 mph S | 57% |
| Thursday Night | 69°F | Showers And Thunderstorms Likely then Partly Cloudy | 0 mph | 57% |
| Friday | 85°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph S | 58% |
| Friday Night | 68°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 0 mph | 58% |
| Saturday | 85°F | Showers And Thunderstorms Likely | 0 to 5 mph S | 68% |
| Saturday Night | 69°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 0 mph | 68% |
| Sunday | 85°F | Chance Showers And Thunderstorms | 0 mph | 51% |
| Sunday Night | 69°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 51% |
| Monday | 86°F | Chance Showers And Thunderstorms | 0 mph | 42% |
| Monday Night | 70°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 mph | 42% |
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 Aug 4, 2026.