See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
19°
Mostly Clear
Feels Like: 16°
Min: 13°
Max: 19°
The next few hours will be overcast, with today reaching 19°C and dropping to 14°C. The coming days will be drizzle
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
06:53
Sunrise
19:12
Sunset
Moon
Waxing Crescent
12:18
Moonrise
20:25
Moonset
Daily Forecast
Today
Wednesday
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Wednesday
Thursday
Air Quality Data Available
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UV Index
Humidity
Weather in West Lake Sammamish today, September 15, 2026
West Lake Sammamish sees a largely clear day on September 15, 2026, interrupted by cloudier skies around 16:00. Plan for bright conditions either side of that cloudier interval.
The day peaks near 19°C and cools toward 13°C. Moisture in the air spans 61%-81%, with the highest values around 23:00. Winds stay light, near 3.1 km/h by 19:00, so the day feels still more than breezy.
Through the afternoon skies look more workable, with cloud near 31% around 16:00. Later outdoor plans have a clearer window than the morning may have suggested. Horizontal visibility holds close to 16.1 km. The sun rises at 06:53 and sets at 19:12, for a total of 12 hours 19 minutes of sunlight today.
Taken together, settled sunshine in West Lake Sammamish on September 15, 2026 makes outdoor timing easier, with highs near 19°C.
Frequently asked questions about weather in West Lake Sammamish
How warm does it get in West Lake Sammamish?
The warmest month in West Lake Sammamish is August, with average high temperatures of 25°C. The average temperature during this period is around 18°C.
How cold does it get in West Lake Sammamish?
The coldest month in West Lake Sammamish is February, with average low temperatures of 2°C. The average temperature during this period is around 4°C.
What is the wettest time of year in West Lake Sammamish?
The wettest month in West Lake Sammamish is December, with an average of 246mm of precipitation.
What is the driest time of year in West Lake Sammamish?
The driest month in West Lake Sammamish is July, with an average of 25mm of precipitation.
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