10-Day Weather Forecast - Mercer Island, WA

Mostly sunny. Highs in the lower to mid 50s. Light wind.

Mostly cloudy. A chance of rain after midnight. Lows in the lower to mid 40s. Light wind.

Rain. Rainfall amounts a half inch to one inch possible. Highs in the lower to mid 50s. Light wind becoming south around 10 mph with gusts to 25 mph in the afternoon.

Rain at times in the evening then rain likely after midnight. Lows in the lower 40s.

Rain at times. Highs in the lower 50s.

Mostly cloudy with rain likely in the evening then mostly cloudy with a chance of rain after midnight. Lows in the mid to upper 30s.

Mostly cloudy with a chance of rain. Highs in the lower to mid 50s.

Mostly clear. Lows in the mid 30s.

Mostly sunny. Highs in the mid to upper 50s.

Partly cloudy in the evening then becoming mostly cloudy. Lows in the mid to upper 30s.

Mostly sunny. A slight chance of rain in the afternoon. Highs near 60.

Mostly cloudy with a slight chance of rain. Chance of precipitation 25%. Low temperature around 45F. Dew point will be around 42F with an average humidity of 69%. Winds will be 1 mph from the SE.

Cloudy with a chance of rain. Chance of precipitation 45%. High temperature around 53F. Dew point will be around 42F with an average humidity of 77%. Winds will be 2 mph from the SW.

Cloudy with a chance of rain. Chance of precipitation 45%. Low temperature around 41F. Dew point will be around 39F with an average humidity of 80%. Winds will be 2 mph from the SW.

Cloudy with a chance of rain. Chance of precipitation 45%. High temperature around 51F. Dew point will be around 40F with an average humidity of 75%. Winds will be 2 mph from the SW.

Cloudy with a chance of rain. Chance of precipitation 45%. Low temperature around 41F. Dew point will be around 39F with an average humidity of 79%. Winds will be 2 mph from the SW.

Cloudy with a chance of rain. Chance of precipitation 45%. High temperature around 53F. Dew point will be around 41F with an average humidity of 76%. Winds will be 1 mph from the SE.

Cloudy with a chance of rain. Chance of precipitation 55%. Low temperature around 42F. Dew point will be around 40F with an average humidity of 79%. Winds will be 1 mph from the E.