Mount Vernon, MO Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mount Vernon, a city in Lawrence County, Missouri.
Tonight
48°F
Slight Chance Drizzle
A slight chance of drizzle before 5am. Cloudy, with a low around 48. Wind chill values as low as 45. West wind 8 to 12 mph, with gusts as high as 21 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Mount Vernon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 48°F | Slight Chance Drizzle | 8 to 12 mph W | 17% |
| Wednesday | 61°F | Mostly Sunny | 7 to 13 mph W | 5% |
| Wednesday Night | 41°F | Clear | 5 mph SW | 0% |
| Thursday | 65°F | Mostly Sunny then Slight Chance Rain Showers | 3 to 8 mph W | 15% |
| Thursday Night | 43°F | Partly Cloudy | 6 mph NW | 13% |
| Friday | 58°F | Partly Sunny | 3 to 8 mph N | 0% |
| Friday Night | 37°F | Partly Cloudy | 0 to 3 mph NE | 0% |
| Saturday | 56°F | Mostly Sunny | 0 to 3 mph NE | 0% |
| Saturday Night | 36°F | Partly Cloudy | 1 mph N | 0% |
| Sunday | 62°F | Sunny | 1 to 5 mph NW | 0% |
| Sunday Night | 38°F | Clear | 2 mph SW | 0% |
| Monday | 67°F | Sunny | 2 to 6 mph SW | 0% |
| Monday Night | 42°F | Clear | 3 mph SW | 1% |
| Tuesday | 70°F | Sunny | 5 mph SW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Mount Vernon (37.105, -93.819). Updated through the day.
Growing snapshot for Mount Vernon
Last spring frost
Apr 14
First fall frost
Oct 21
Growing season
188 days
Hardiness zone
7a
More local growing data for Mount Vernon: nearby ZIP 65712 weather · frost dates · planting calendar · Missouri frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Mt Vernon Univ Mo - Sw Ctr, Mo (4.8 mi from Mount Vernon). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.