Arlington Heights, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Arlington Heights, a community in Snohomish County, Washington.
This Afternoon
75°F
Mostly Sunny
Mostly sunny. High near 75, with temperatures falling to around 73 in the afternoon. West wind around 3 mph.
7-day forecast for Arlington Heights
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 75°F | Mostly Sunny | 3 mph W | 0% |
| Tonight | 51°F | Mostly Clear | 0 to 3 mph S | 0% |
| Sunday | 76°F | Mostly Sunny | 3 mph SSW | 0% |
| Sunday Night | 51°F | Partly Cloudy | 2 mph NNW | 0% |
| Monday | 73°F | Partly Sunny | 0 to 3 mph WNW | 0% |
| Monday Night | 49°F | Partly Cloudy | 0 to 3 mph N | 0% |
| Tuesday | 70°F | Partly Sunny | 3 mph NNW | 1% |
| Tuesday Night | 49°F | Mostly Cloudy | 0 to 3 mph NE | 11% |
| Wednesday | 68°F | Slight Chance Light Rain | 2 mph SSW | 15% |
| Wednesday Night | 47°F | Mostly Cloudy | 2 mph NNW | 11% |
| Thursday | 66°F | Mostly Cloudy then Slight Chance Light Rain | 0 to 5 mph N | 18% |
| Thursday Night | 48°F | Slight Chance Light Rain | 1 to 5 mph N | 19% |
| Friday | 66°F | Slight Chance Light Rain | 1 to 5 mph NW | 21% |
| Friday Night | 45°F | Slight Chance Light Rain | 5 mph NE | 23% |
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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Chain Lake
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Darrington
Eastmont
Edmonds
Esperance
Everett
Fobes Hill
Gold Bar
Granite Falls
Hat Island
Kayak Point
Lake Bosworth
Lake Cassidy
Lake Cavanaugh
Lake Goodwin
Lake Roesiger
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.