Mount Vernon, OH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mount Vernon, a city in Knox County, Ohio.
Tonight
56°F
Partly Cloudy
Partly cloudy, with a low around 56. Northeast wind 3 to 8 mph.
7-day forecast for Mount Vernon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 56°F | Partly Cloudy | 3 to 8 mph NE | 2% |
| Saturday | 80°F | Mostly Sunny then Slight Chance Rain Showers | 5 mph E | 19% |
| Saturday Night | 65°F | Showers And Thunderstorms Likely | 6 mph S | 70% |
| Sunday | 79°F | Showers And Thunderstorms | 5 to 8 mph W | 88% |
| Sunday Night | 58°F | Showers And Thunderstorms | 9 mph NE | 77% |
| Monday | 69°F | Chance Rain Showers | 10 mph NE | 45% |
| Monday Night | 55°F | Chance Rain Showers | 10 mph NE | 46% |
| Tuesday | 69°F | Chance Rain Showers | 12 mph NE | 46% |
| Tuesday Night | 56°F | Rain Showers Likely | 12 mph NE | 60% |
| Wednesday | 68°F | Rain Showers Likely | 12 mph E | 60% |
| Wednesday Night | 54°F | Chance Showers And Thunderstorms | 9 mph E | 54% |
| Thursday | 68°F | Chance Rain Showers | 8 mph NE | 28% |
| Thursday Night | 53°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 8 mph N | 21% |
| Friday | 70°F | Partly Sunny | 6 to 9 mph N | 14% |
Forecast source: National Weather Service (api.weather.gov) for Mount Vernon (40.386, -82.484). Updated through the day.
Growing snapshot for Mount Vernon
Last spring frost
May 1
First fall frost
Oct 10
Growing season
161 days
Hardiness zone
6a
More local growing data for Mount Vernon: nearby ZIP 43050 weather · frost dates · planting calendar · Ohio frost dates
Nearby towns & communities
Apple Valley
Bladensburg
Centerburg
Danville
Fredericktown
Gambier
Howard
Martinsburg
South Mount Vernon
Climate data from the nearest NOAA station, Fredericktown 4 S, Oh (3.6 mi from Mount Vernon). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.