Sammamish, WA Weather & Growing Conditions
Today
86°F
Areas Of Smoke
Areas of smoke after 10am. Sunny, with a high near 86. North wind 1 to 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Areas Of Smoke | 1 to 6 mph N | 0% |
| Tonight | 57°F | Areas Of Smoke | 0 to 5 mph NNE | 0% |
| Wednesday | 91°F | Areas Of Smoke | 0 to 3 mph NNW | 0% |
| Wednesday Night | 59°F | Clear | 0 to 3 mph NNW | 0% |
| Thursday | 91°F | Sunny | 2 mph NW | 0% |
| Thursday Night | 60°F | Mostly Clear | 2 mph NNE | 0% |
| Friday | 88°F | Sunny | 2 mph SW | 0% |
| Friday Night | 59°F | Mostly Clear | 0 to 3 mph N | 0% |
| Saturday | 84°F | Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 57°F | Mostly Clear | 0 to 7 mph N | 1% |
| Sunday | 79°F | Mostly Sunny | 2 mph WNW | 1% |
| Sunday Night | 56°F | Mostly Clear | 2 mph N | 0% |
| Monday | 78°F | Mostly Sunny | 2 mph NW | 1% |
| Monday Night | 55°F | Partly Cloudy | 2 mph N | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Sammamish, WA
Last spring frost
Mar 8
First fall frost
Nov 23
Growing season
259 days
Hardiness zone
8b
Explore more for Sammamish, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, Seattle Sand Pt Wsfo, Wa (10.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.