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
69°F
Showers And Thunderstorms
A chance of rain showers before 7am, then showers and thunderstorms. Cloudy, with a high near 69. South wind around 14 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
7-day forecast for Mount Vernon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 69°F | Showers And Thunderstorms | 14 mph S | 90% |
| Tonight | 53°F | Showers And Thunderstorms then Mostly Cloudy | 3 to 12 mph SW | 80% |
| Thursday | 67°F | Mostly Sunny | 3 to 7 mph SW | 0% |
| Thursday Night | 44°F | Partly Cloudy | 0 to 3 mph W | 1% |
| Friday | 64°F | Mostly Sunny | 0 to 8 mph WNW | 1% |
| Friday Night | 39°F | Mostly Cloudy | 3 to 7 mph NNW | 1% |
| Saturday | 54°F | Mostly Sunny | 6 mph NNW | 1% |
| Saturday Night | 33°F | Partly Cloudy | 0 to 3 mph N | 0% |
| Sunday | 57°F | Mostly Sunny | 1 to 6 mph NW | 0% |
| Sunday Night | 32°F | Mostly Clear then Areas Of Frost | 1 to 5 mph WNW | 3% |
| Monday | 60°F | Areas Of Frost then Sunny | 1 to 5 mph SW | 3% |
| Monday Night | 34°F | Clear | 2 mph SW | 2% |
| Tuesday | 64°F | Sunny | 2 to 6 mph WSW | 1% |
| Tuesday Night | 36°F | Mostly Clear | 3 mph WSW | 2% |
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 Nov 4, 2026.