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
58°F
Partly Cloudy
Partly cloudy, with a low around 58. Southeast wind 7 to 10 mph, with gusts as high as 21 mph.
7-day forecast for Mount Vernon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 58°F | Partly Cloudy | 7 to 10 mph SE | 9% |
| Wednesday | 66°F | Slight Chance T-storms then Light Rain | 10 to 14 mph S | 100% |
| Wednesday Night | 53°F | Light Rain | 7 to 13 mph S | 75% |
| Thursday | 65°F | Mostly Sunny | 6 to 13 mph SW | 3% |
| Thursday Night | 44°F | Partly Cloudy | 2 to 7 mph SW | 1% |
| Friday | 61°F | Partly Sunny then Slight Chance Light Rain | 2 to 8 mph W | 17% |
| Friday Night | 39°F | Slight Chance Light Rain | 7 mph NW | 20% |
| Saturday | 54°F | Slight Chance Light Rain | 9 mph NW | 24% |
| Saturday Night | 33°F | Slight Chance Light Rain then Partly Cloudy | 2 to 6 mph W | 24% |
| Sunday | 55°F | Mostly Sunny then Slight Chance Light Rain | 3 to 9 mph W | 15% |
| Sunday Night | 32°F | Slight Chance Light Rain | 8 mph W | 17% |
| Monday | 57°F | Slight Chance Light Rain | 7 to 10 mph W | 24% |
| Monday Night | 35°F | Slight Chance Light Rain then Partly Cloudy | 9 mph W | 22% |
| Tuesday | 61°F | Mostly Sunny | 12 mph W | 4% |
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 Nov 4, 2026.