Mount Vernon, KY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mount Vernon, a city in Rockcastle County, Kentucky.
Overnight
64°F
Chance Light Rain
A chance of rain after 2am. Mostly cloudy. Low around 64, with temperatures rising to around 66 overnight. South southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Mount Vernon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 64°F | Chance Light Rain | 10 mph SSE | 28% |
| Wednesday | 69°F | Rain | 14 mph S | 90% |
| Wednesday Night | 53°F | Rain then Mostly Cloudy | 3 to 12 mph SW | 80% |
| Thursday | 68°F | Mostly Sunny | 2 to 7 mph SW | 6% |
| Thursday Night | 46°F | Partly Cloudy | 1 mph W | 1% |
| Friday | 66°F | Mostly Sunny | 1 to 7 mph NW | 4% |
| Friday Night | 41°F | Partly Cloudy | 2 to 6 mph NNW | 10% |
| Saturday | 57°F | Mostly Sunny | 6 mph NNW | 4% |
| Saturday Night | 35°F | Partly Cloudy | 3 mph NNW | 1% |
| Sunday | 58°F | Mostly Sunny | 1 to 6 mph WNW | 6% |
| Sunday Night | 33°F | Mostly Clear | 5 mph W | 12% |
| Monday | 60°F | Sunny | 2 to 7 mph WSW | 12% |
| Monday Night | 34°F | Mostly Clear | 5 mph WSW | 10% |
| Tuesday | 64°F | Sunny | 3 to 8 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.