Mount Vernon, KY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mount Vernon, a city in Rockcastle County, Kentucky.
Today
85°F
Sunny
Sunny. High near 85, with temperatures falling to around 84 in the afternoon. North northeast wind around 5 mph.
7-day forecast for Mount Vernon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Sunny | 5 mph NNE | 6% |
| Tonight | 68°F | Partly Cloudy | 3 mph NE | 8% |
| Wednesday | 83°F | Slight Chance Showers And Thunderstorms | 1 to 5 mph SSW | 36% |
| Wednesday Night | 68°F | Chance Showers And Thunderstorms then Partly Cloudy | 2 mph S | 32% |
| Thursday | 84°F | Chance Showers And Thunderstorms | 2 to 8 mph SSW | 36% |
| Thursday Night | 68°F | Chance Showers And Thunderstorms | 5 mph S | 36% |
| Friday | 84°F | Chance Showers And Thunderstorms | 7 mph SSW | 58% |
| Friday Night | 68°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 5 mph SSW | 58% |
| Saturday | 84°F | Chance Showers And Thunderstorms | 3 to 7 mph SW | 49% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 3 mph SSW | 49% |
| Sunday | 85°F | Chance Showers And Thunderstorms | 2 to 6 mph SW | 27% |
| Sunday Night | 69°F | Chance Showers And Thunderstorms then Partly Cloudy | 3 mph SSW | 27% |
| Monday | 87°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 3 to 7 mph SW | 19% |
| Monday Night | 70°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 mph SW | 19% |
Forecast source: National Weather Service (api.weather.gov) for Mount Vernon (37.357, -84.333). Updated through the day.
Growing snapshot for Mount Vernon
Last spring frost
Apr 18
First fall frost
Oct 24
Growing season
189 days
Hardiness zone
7a
More local growing data for Mount Vernon: nearby ZIP 40456 weather · frost dates · planting calendar · Kentucky frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Mt Vernon, Ky (1 mi from Mount Vernon). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.