Mount Vernon, WA Weather & Growing Conditions
Today
82°F
Sunny
Sunny, with a high near 82. Northwest wind 0 to 9 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Sunny | 0 to 9 mph NW | 0% |
| Tonight | 56°F | Mostly Clear | 1 to 6 mph WNW | 0% |
| Wednesday | 85°F | Sunny then Patchy Smoke | 1 to 7 mph N | 0% |
| Wednesday Night | 58°F | Mostly Clear | 1 to 6 mph ENE | 0% |
| Thursday | 86°F | Sunny | 1 to 7 mph SSW | 0% |
| Thursday Night | 59°F | Mostly Clear | 2 to 6 mph SSW | 0% |
| Friday | 82°F | Sunny | 2 to 7 mph SSW | 0% |
| Friday Night | 57°F | Mostly Clear | 2 to 7 mph SSW | 0% |
| Saturday | 78°F | Sunny | 2 to 8 mph SW | 0% |
| Saturday Night | 55°F | Mostly Clear | 2 to 8 mph SSW | 0% |
| Sunday | 75°F | Mostly Sunny | 2 to 7 mph SW | 0% |
| Sunday Night | 54°F | Mostly Clear | 1 to 7 mph SW | 3% |
| Monday | 75°F | Mostly Sunny | 2 to 7 mph WSW | 3% |
| Monday Night | 55°F | Partly Cloudy | 2 to 7 mph SW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Mount Vernon, WA
Last spring frost
Mar 24
First fall frost
Nov 3
Growing season
224 days
Hardiness zone
8b
Explore more for Mount Vernon, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, Mt Vernon 3 Wnw, Wa (2.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.