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Arlington Heights, WA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Arlington Heights, a community in Snohomish County, Washington.

Overnight
51°F
Mostly Cloudy
Mostly cloudy, with a low around 51. East northeast wind around 2 mph.

7-day forecast for Arlington Heights

WhenTempForecastWindPrecip
Overnight 51°F Mostly Cloudy 2 mph ENE 0%
Saturday 75°F Partly Sunny 0 to 3 mph W 0%
Saturday Night 51°F Mostly Clear 2 mph S 0%
Sunday 75°F Mostly Sunny 3 mph NNW 0%
Sunday Night 51°F Partly Cloudy 0 to 3 mph NNW 0%
Monday 73°F Mostly Sunny 0 to 3 mph WNW 0%
Monday Night 51°F Partly Cloudy 0 to 3 mph NNE 1%
Tuesday 70°F Partly Sunny 3 mph NNW 1%
Tuesday Night 49°F Mostly Cloudy 0 to 3 mph NE 11%
Wednesday 69°F Partly Sunny then Slight Chance Light Rain 3 mph SW 17%
Wednesday Night 49°F Slight Chance Light Rain then Mostly Cloudy 3 mph N 17%
Thursday 68°F Mostly Cloudy then Slight Chance Light Rain 1 to 5 mph NNW 18%
Thursday Night 48°F Slight Chance Light Rain 1 to 5 mph N 24%
Friday 66°F Slight Chance Light Rain 3 mph NW 24%

Forecast source: National Weather Service (api.weather.gov) for Arlington Heights (48.212, -122.063). Updated through the day.

Growing snapshot for Arlington Heights

Last spring frost
Apr 22
First fall frost
Oct 19
Growing season
181 days
Hardiness zone
8b

More local growing data for Arlington Heights: nearby ZIP 98223 weather · frost dates · planting calendar · Washington frost dates

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Climate data from the nearest NOAA station, Arlington, Wa (8.1 mi from Arlington Heights). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.