Sammamish, WA Weather Forecast
Local 7-day forecast
Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Sammamish, WA in one place.
Rain before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then a chance of rain. Mostly cloudy, with a high near 70. South wind around 2 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
Local Weather Overview
This forecast page for Sammamish, WA is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Aug 27, 2026 7:08 PM PDT.
The active forecast window currently covers Aug 29 to Sep 2, 2026 for Sammamish, WA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 29 to Sep 2, 2026
- Latest sync
- Aug 27, 2026 7:08 PM PDT
- Forecast office
- SEW
- Source
- NOAA / NWS
Daily Outlook
This Week in Sammamish
Monday looks like the warmest upcoming period in Sammamish at 73 degrees F.
Saturday Night is the coolest period ahead with temperatures near 53 degrees F.
The strongest winds are forecast for Tuesday Night at about 5 mph S.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 27, 2026 7:08 PM PDT
- Coverage
- 6 days
- Time zone
- America/Los_Angeles
- Forecast office
- SEW
- Radar station
- KATX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of rain before 11pm. Mostly cloudy, with a low around 53. Chance of precipitation is 30%.
Partly sunny, with a high near 71.
Mostly cloudy, with a low around 53.
Partly sunny, with a high near 73.
A slight chance of rain after 5am. Mostly cloudy, with a low around 55.
A chance of rain. Mostly cloudy, with a high near 72.
A chance of rain. Mostly cloudy, with a low around 54.
Rain likely. Mostly cloudy, with a high near 68.
Rain likely. Mostly cloudy, with a low around 53.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Aug 29
|
Chance Showers And Thunderstorms
|
70°F |
2 mph
S
|
|
Saturday Night
Aug 29
|
Chance Light Rain then Mostly Cloudy
|
53°F |
1 mph
S
|
|
Sunday
Aug 30
|
Partly Sunny
|
71°F |
2 mph
SSW
|
|
Sunday Night
Aug 30
|
Mostly Cloudy
|
53°F |
0 mph
|
|
Monday
Aug 31
|
Partly Sunny
|
73°F |
2 mph
WNW
|
|
Monday Night
Aug 31
|
Mostly Cloudy then Slight Chance Light Rain
|
55°F |
2 mph
NW
|
|
Tuesday
Sep 1
|
Chance Light Rain
|
72°F |
0 to 3 mph
S
|
|
Tuesday Night
Sep 1
|
Chance Light Rain
|
54°F |
5 mph
S
|
|
Wednesday
Sep 2
|
Light Rain Likely
|
68°F |
5 mph
S
|
|
Wednesday Night
Sep 2
|
Light Rain Likely
|
53°F |
5 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Sammamish.
