Mountlake Terrace, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mountlake Terrace, a city in Snohomish County, Washington.
Overnight
52°F
Mostly Cloudy
Mostly cloudy, with a low around 52. North wind around 1 mph.
7-day forecast for Mountlake Terrace
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Mostly Cloudy | 1 mph N | 0% |
| Saturday | 70°F | Partly Sunny | 3 mph WNW | 0% |
| Saturday Night | 51°F | Mostly Clear | 3 mph N | 0% |
| Sunday | 69°F | Partly Sunny | 2 to 6 mph N | 0% |
| Sunday Night | 51°F | Partly Cloudy | 2 to 6 mph N | 0% |
| Monday | 69°F | Mostly Sunny | 5 mph NNW | 0% |
| Monday Night | 52°F | Partly Cloudy | 5 mph N | 1% |
| Tuesday | 66°F | Partly Sunny | 3 mph N | 1% |
| Tuesday Night | 51°F | Mostly Cloudy | 3 mph NE | 10% |
| Wednesday | 66°F | Partly Sunny then Slight Chance Light Rain | 1 to 5 mph SW | 15% |
| Wednesday Night | 52°F | Slight Chance Light Rain then Mostly Cloudy | 5 mph N | 15% |
| Thursday | 63°F | Mostly Cloudy then Slight Chance Light Rain | 2 to 7 mph N | 19% |
| Thursday Night | 51°F | Slight Chance Light Rain | 2 to 7 mph N | 19% |
| Friday | 62°F | Slight Chance Light Rain | 2 to 6 mph N | 15% |
Forecast source: National Weather Service (api.weather.gov) for Mountlake Terrace (47.794, -122.303). Updated through the day.
Growing snapshot for Mountlake Terrace
Last spring frost
Mar 8
First fall frost
Nov 23
Growing season
259 days
Hardiness zone
9a
More local growing data for Mountlake Terrace: nearby ZIP 98043 weather · frost dates · planting calendar · Washington frost dates
Nearby towns & communities
Alderwood Manor
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Arlington Heights
Bothell East
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Cavalero
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Clearview
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
Climate data from the nearest NOAA station, Seattle Sand Pt Wsfo, Wa (7.7 mi from Mountlake Terrace). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.