Mount Vernon, WA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Mount Vernon, a city in Skagit County, Washington.

This Afternoon

55°F

Mostly Cloudy

Mostly cloudy. High near 55, with temperatures falling to around 51 in the afternoon. North northwest wind around 1 mph.

7-day forecast for Mount Vernon

When	Temp	Forecast	Wind	Precip
This Afternoon	55°F	Mostly Cloudy	1 mph NNW	4%
Tonight	39°F	Partly Cloudy	2 mph ESE	4%
Wednesday	58°F	Mostly Sunny then Slight Chance Light Rain	2 to 9 mph SE	15%
Wednesday Night	47°F	Light Rain	6 to 14 mph SSE	97%
Thursday	55°F	Chance Light Rain then Partly Sunny	5 to 8 mph SSE	40%
Thursday Night	47°F	Light Rain	7 to 15 mph SE	89%
Friday	55°F	Light Rain	8 to 16 mph SE	89%
Friday Night	47°F	Chance Light Rain	3 to 9 mph ESE	39%
Saturday	60°F	Chance Light Rain	3 to 12 mph SE	37%
Saturday Night	49°F	Light Rain	12 to 20 mph SSE	82%
Sunday	55°F	Light Rain	2 to 15 mph S	82%
Sunday Night	43°F	Chance Light Rain	2 to 7 mph SE	33%
Monday	55°F	Chance Light Rain	5 to 9 mph ESE	54%
Monday Night	47°F	Light Rain Likely	9 to 17 mph SE	73%

Forecast source: National Weather Service (api.weather.gov) for Mount Vernon (48.417, -122.312). Updated through the day.

Growing snapshot for Mount Vernon

Last spring frost

Mar 24

First fall frost

Nov 3

Growing season

224 days

Hardiness zone

More local growing data for Mount Vernon: nearby ZIP 98273 weather · frost dates · planting calendar · Washington frost dates

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Climate data from the nearest NOAA station, Mt Vernon 3 Wnw, Wa (2.6 mi from Mount Vernon). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.