Sammamish, Washington Weather:
Friday, September 25, 2026
Partly Sunny with Showers
Day 64°
Night 46°
Precipitation 67 %
Wind 9 mph
UV Index (0 - 11+) 3
Weather Forecast History
Last Year's Weather on This Day (September 25, 2025)
Cloudy Weather

Day

64°

Night

50°

Wind

6 mph

UV Index

40

Precipitation

2 %