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
40°F
Patchy Fog
Patchy fog before 3am. Partly cloudy, with a low around 40. South southeast wind around 3 mph.
7-day forecast for Mountlake Terrace
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 40°F | Patchy Fog | 3 mph SSE | 1% |
| Wednesday | 56°F | Partly Sunny then Chance Light Rain | 3 to 9 mph SSE | 41% |
| Wednesday Night | 47°F | Light Rain | 7 to 12 mph S | 85% |
| Thursday | 55°F | Partly Sunny | 8 mph S | 6% |
| Thursday Night | 46°F | Light Rain Likely | 7 to 10 mph SSE | 73% |
| Friday | 54°F | Light Rain Likely | 7 to 14 mph SSE | 73% |
| Friday Night | 48°F | Light Rain Likely | 3 to 7 mph SSE | 72% |
| Saturday | 60°F | Chance Light Rain | 5 mph SSE | 28% |
| Saturday Night | 50°F | Light Rain | 5 to 16 mph S | 81% |
| Sunday | 55°F | Light Rain Likely | 3 to 14 mph S | 60% |
| Sunday Night | 43°F | Slight Chance Light Rain | 3 mph SE | 16% |
| Monday | 54°F | Chance Light Rain | 5 mph SE | 42% |
| Monday Night | 46°F | Light Rain Likely | 5 to 10 mph SSE | 59% |
| Tuesday | 56°F | Light Rain Likely | 7 to 13 mph SSE | 59% |
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
Arlington
Arlington Heights
Bothell East
Bothell West
Brier
Bunk Foss
Canyon Creek
Cathcart
Cavalero
Chain Lake
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 Nov 4, 2026.