Mount Vernon, MO Weather & Growing Conditions
This Afternoon
70°F
Areas Of Drizzle
Areas of drizzle. Mostly cloudy. High near 70, with temperatures falling to around 62 in the afternoon. Southwest wind around 14 mph, with gusts as high as 23 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 70°F | Areas Of Drizzle | 14 mph SW | 25% |
| Tonight | 48°F | Areas Of Drizzle | 9 to 13 mph W | 40% |
| Wednesday | 60°F | Areas Of Drizzle then Mostly Sunny | 7 to 13 mph W | 39% |
| Wednesday Night | 41°F | Clear | 5 mph SW | 0% |
| Thursday | 64°F | Mostly Sunny then Chance Rain Showers | 2 to 6 mph W | 40% |
| Thursday Night | 41°F | Slight Chance Rain Showers then Mostly Cloudy | 5 mph NW | 16% |
| Friday | 58°F | Partly Sunny | 3 to 7 mph N | 2% |
| Friday Night | 39°F | Partly Cloudy | 0 to 3 mph N | 0% |
| Saturday | 58°F | Partly Sunny | 0 to 3 mph N | 1% |
| Saturday Night | 37°F | Mostly Clear | 1 mph W | 5% |
| Sunday | 63°F | Sunny | 1 to 6 mph W | 6% |
| Sunday Night | 38°F | Clear | 3 mph W | 1% |
| Monday | 67°F | Sunny | 3 to 8 mph SW | 0% |
| Monday Night | 43°F | Mostly Clear | 5 mph SW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Mount Vernon, MO
Last spring frost
Apr 14
First fall frost
Oct 21
Growing season
188 days
Hardiness zone
7a
Explore more for Mount Vernon, MO: full frost dates · planting calendar · Missouri frost dates
Climate data from the nearest NOAA station, Mt Vernon Univ Mo - Sw Ctr, Mo (4.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.