10-Day Weather Forecast - Mercer Island, WA

Partly sunny. Highs near 70. Light wind.

Mostly cloudy. Lows in the lower 50s. Light wind.

Mostly cloudy. Highs in the mid to upper 60s. South wind to 10 mph becoming southwest around 10 mph with gusts to 20 mph in the afternoon.

Partly cloudy. Lows in the lower 50s.

Mostly sunny. Highs in the lower to mid 70s.

Partly cloudy. Lows in the lower 50s.

Partly sunny. Highs in the mid to upper 70s.

Partly cloudy. Lows in the lower 50s.

Mostly sunny. Highs in the mid 70s.

Partly cloudy. Lows in the lower 50s.

Mostly sunny. Highs in the lower to mid 70s.

Mostly clear. Low temperature around 52F. Dew point will be around 48F with an average humidity of 68%. Winds will be 1 mph from the N.

Mostly sunny. High temperature around 70F. Dew point will be around 49F with an average humidity of 60%. Winds will be 1 mph from the N.

Clear. Low temperature around 53F. Dew point will be around 49F with an average humidity of 70%. Winds will be 1 mph from the SE.

Partly cloudy. High temperature around 69F. Dew point will be around 50F with an average humidity of 63%. Winds will be 1 mph from the S.

Mostly clear. Low temperature around 52F. Dew point will be around 49F with an average humidity of 72%. Winds will be 1 mph from the S.

Mostly sunny. High temperature around 66F. Dew point will be around 49F with an average humidity of 65%. Winds will be 2 mph from the S.

Partly cloudy. Low temperature around 51F. Dew point will be around 48F with an average humidity of 75%. Winds will be 2 mph from the S.