Granite Falls, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Granite Falls, a city in Snohomish County, Washington.
Overnight
52°F
Clear
Clear, with a low around 52. East southeast wind around 2 mph.
7-day forecast for Granite Falls
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Clear | 2 mph ESE | 0% |
| Tuesday | 86°F | Smoke | 1 to 6 mph WSW | 0% |
| Tuesday Night | 57°F | Patchy Smoke | 1 to 5 mph SSE | 0% |
| Wednesday | 90°F | Areas Of Smoke | 1 to 5 mph NW | 0% |
| Wednesday Night | 60°F | Clear | 1 to 5 mph N | 0% |
| Thursday | 90°F | Sunny | 0 to 3 mph WSW | 0% |
| Thursday Night | 59°F | Mostly Clear | 0 to 3 mph W | 0% |
| Friday | 86°F | Sunny | 0 to 5 mph SW | 0% |
| Friday Night | 57°F | Mostly Clear | 1 to 5 mph NNW | 0% |
| Saturday | 81°F | Sunny | 0 to 7 mph NNW | 0% |
| Saturday Night | 55°F | Mostly Clear | 1 to 7 mph N | 0% |
| Sunday | 78°F | Mostly Sunny | 0 to 5 mph NW | 0% |
| Sunday Night | 53°F | Mostly Clear | 0 to 5 mph NNW | 2% |
| Monday | 78°F | Mostly Sunny | 0 to 5 mph WNW | 2% |
Forecast source: National Weather Service (api.weather.gov) for Granite Falls (48.090, -121.969). Updated through the day.
Growing snapshot for Granite Falls
Last spring frost
Mar 24
First fall frost
Nov 2
Growing season
223 days
Hardiness zone
8b
More local growing data for Granite Falls: nearby ZIP 98258 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
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, Everett, Wa (6.6 mi from Granite Falls). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.