Mount Vernon, OR Weather & Growing Conditions
Overnight
33°F
Mostly Clear
Mostly clear, with a low around 33. East wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 33°F | Mostly Clear | 2 mph E | 0% |
| Wednesday | 55°F | Sunny | 2 mph W | 2% |
| Wednesday Night | 39°F | Mostly Cloudy then Slight Chance Rain Showers | 3 mph NW | 21% |
| Thursday | 51°F | Slight Chance Rain Showers then Mostly Sunny | 0 to 3 mph NW | 21% |
| Thursday Night | 33°F | Mostly Clear | 0 to 10 mph E | 0% |
| Friday | 57°F | Partly Sunny | 0 to 9 mph SE | 0% |
| Friday Night | 38°F | Partly Cloudy | 0 to 12 mph SE | 0% |
| Saturday | 63°F | Mostly Sunny | 8 to 12 mph SE | 0% |
| Saturday Night | 40°F | Mostly Cloudy | 8 to 23 mph SE | 3% |
| Sunday | 56°F | Partly Sunny | 0 to 9 mph SW | 4% |
| Sunday Night | 38°F | Mostly Cloudy | 0 to 7 mph E | 1% |
| Monday | 57°F | Partly Sunny | 0 to 6 mph SE | 4% |
| Monday Night | 38°F | Mostly Cloudy | 0 to 7 mph SE | 14% |
| Tuesday | 57°F | Slight Chance Rain Showers | 2 to 7 mph SE | 16% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Mount Vernon, OR
Last spring frost
May 28
First fall frost
Sep 18
Growing season
113 days
Hardiness zone
6b
Explore more for Mount Vernon, OR: full frost dates · planting calendar · Oregon frost dates
Climate data from the nearest NOAA station, John Day, Or (11.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.