Seattle, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Seattle, a city in King County, Washington.
Tonight
54°F
Partly Cloudy
Partly cloudy, with a low around 54. South southeast wind around 2 mph.
7-day forecast for Seattle
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Partly Cloudy | 2 mph SSE | 0% |
| Saturday | 71°F | Partly Sunny | 3 mph WSW | 1% |
| Saturday Night | 54°F | Partly Cloudy | 3 mph N | 0% |
| Sunday | 71°F | Mostly Sunny | 2 to 6 mph N | 0% |
| Sunday Night | 54°F | Mostly Clear | 1 to 6 mph NNE | 1% |
| Monday | 70°F | Mostly Sunny | 1 to 5 mph N | 1% |
| Monday Night | 55°F | Partly Cloudy | 1 to 5 mph NNE | 2% |
| Tuesday | 66°F | Partly Sunny | 3 mph N | 2% |
| Tuesday Night | 54°F | Partly Cloudy | 3 mph ENE | 4% |
| Wednesday | 65°F | Partly Sunny | 1 to 5 mph SE | 4% |
| Wednesday Night | 54°F | Mostly Cloudy | 5 mph N | 7% |
| Thursday | 66°F | Partly Sunny | 2 to 7 mph N | 14% |
| Thursday Night | 54°F | Chance Light Rain | 7 mph SSE | 27% |
| Friday | 64°F | Chance Light Rain | 5 to 8 mph SW | 27% |
Forecast source: National Weather Service (api.weather.gov) for Seattle (47.619, -122.352). Updated through the day.
Growing snapshot for Seattle
Last spring frost
Mar 13
First fall frost
Nov 17
Growing season
247 days
Hardiness zone
9a
More local growing data for Seattle: nearby ZIP 98121 weather · frost dates · planting calendar · Washington frost dates
Nearby towns & communities
Algona
Ames Lake
Auburn
Baring
Beaux Arts Village
Bellevue
Black Diamond
Bothell
Boulevard Park
Bryn Mawr-Skyway
Burien
Carnation
Clyde Hill
Cottage Lake
Covington
Des Moines
Duvall
East Renton Highlands
Fairwood
Fall City
Federal Way
Greenwater
High Bridge
Hobart
Hunts Point
Index
Issaquah
Kenmore
Kent
Kirkland
Climate data from the nearest NOAA station, Seattle Boeing Fld, Wa (6.3 mi from Seattle). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.