See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
19°
Mostly Clear
Feels Like: 14°
Min: 12°
Max: 19°
The next few hours will be overcast, with today reaching 19°C and dropping to 11°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
06:52
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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Humidity
Weather in City of Sammamish today, September 15, 2026
Sunshine leads the day in City of Sammamish on September 15, 2026, with a patch of cloud building near 15:00. The broader outlook stays fair despite that temporary thickening.
The day peaks near 19°C and cools toward 12°C. Relative humidity sits between 56% and 83%, reaching its peak around 23:00. Expect gentle winds, highest near 18:00 at 2.7 km/h.
Later hours favour clearer intervals, as cloud stays near 32% around 15:00. The afternoon is the better half for outdoor time. Horizontal visibility holds close to 16.1 km. Daylight runs from 06:52 to 19:12, lasting 12 hours 19 minutes of sunlight today.
Overall, City of Sammamish on September 15, 2026 favours outdoor plans under mostly open skies, with a comfortable high near 19°C.
Frequently asked questions about weather in City of Sammamish
How warm does it get in City of Sammamish?
The warmest month in City of 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 City of Sammamish?
The coldest month in City of 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 City of Sammamish?
The wettest month in City of Sammamish is December, with an average of 246mm of precipitation.
What is the driest time of year in City of Sammamish?
The driest month in City of Sammamish is July, with an average of 25mm of precipitation.
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