Seattle, WA Weather & Growing Conditions
Tonight
42°F
Partly Cloudy then Patchy Fog
Patchy fog after midnight. Partly cloudy, with a low around 42. East southeast wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 42°F | Partly Cloudy then Patchy Fog | 2 mph ESE | 1% |
| Wednesday | 58°F | Patchy Fog then Chance Light Rain | 2 to 8 mph SSE | 41% |
| Wednesday Night | 48°F | Light Rain | 8 to 13 mph S | 88% |
| Thursday | 58°F | Partly Sunny | 9 mph S | 6% |
| Thursday Night | 47°F | Mostly Cloudy then Light Rain Likely | 7 to 10 mph SSE | 67% |
| Friday | 56°F | Light Rain Likely | 6 to 12 mph SSE | 69% |
| Friday Night | 49°F | Light Rain Likely | 2 to 6 mph SSE | 71% |
| Saturday | 63°F | Chance Light Rain | 3 mph SSE | 28% |
| Saturday Night | 51°F | Light Rain | 3 to 16 mph S | 82% |
| Sunday | 57°F | Light Rain Likely | 3 to 15 mph SSW | 59% |
| Sunday Night | 44°F | Slight Chance Light Rain | 3 mph SE | 15% |
| Monday | 57°F | Chance Light Rain | 3 mph SE | 40% |
| Monday Night | 47°F | Light Rain Likely | 3 to 10 mph SSE | 57% |
| Tuesday | 59°F | Light Rain Likely | 6 to 12 mph SSE | 57% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Seattle, WA
Last spring frost
Mar 8
First fall frost
Nov 23
Growing season
259 days
Hardiness zone
9a
Explore more for Seattle, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, Seattle Sand Pt Wsfo, Wa (1.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.