Climate in Issaquah: Temperature, Rainfall, Humidity & Sunshine

Global Climate Score

The local climate features pleasantly warm, dry summers that encourage endless outdoor recreation amidst the surrounding mountain landscapes. Winters tend to be cool and damp with occasional mountain snowfall, while spring and autumn bring refreshing transitional weather patterns. Precipitation occurs frequently between late autumn and early spring, maintaining the vibrant green forests characteristic of the Pacific Northwest. Sunshine hours peak significantly during the summer months, offering long daylight periods ideal for evening trail hikes. Overall, the weather patterns provide a comfortable four-season experience without extreme temperature fluctuations.