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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| 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
Nearby towns & communities
Alderwood Manor
Arlington
Bothell East
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Darrington
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Edmonds
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Fobes Hill
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Granite Falls
Hat Island
Kayak Point
Lake Bosworth
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Lake Cavanaugh
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Lake Stevens
Lake Stickney
Larch Way
Lochsloy
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.