Weather in Mercer Island, Washington, United States

7-Day Detailed Weather Forecast for Mercer Island

New Year's Day

Temperature: 46°F

Wind Speed: 3 mph

Wind Direction: E

Forecast: A chance of rain. Cloudy. High near 46, with temperatures falling to around 44 in the afternoon. East wind around 3 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.

Tonight

Temperature: 42°F

Wind Speed: 5 mph

Wind Direction: E

Forecast: Rain. Cloudy, with a low around 42. East wind around 5 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Friday

Temperature: 51°F

Wind Speed: 5 to 8 mph

Wind Direction: SSE

Forecast: Rain. Cloudy, with a high near 51. South southeast wind 5 to 8 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.

Friday Night

Temperature: 45°F

Wind Speed: 7 mph

Wind Direction: ESE

Forecast: Rain. Mostly cloudy, with a low around 45. East southeast wind around 7 mph. Chance of precipitation is 90%. New rainfall amounts less than a tenth of an inch possible.

Saturday

Temperature: 53°F

Wind Speed: 9 mph

Wind Direction: SE

Forecast: Rain. Mostly cloudy, with a high near 53. Southeast wind around 9 mph. Chance of precipitation is 90%. New rainfall amounts less than a tenth of an inch possible.

Saturday Night

Temperature: 45°F

Wind Speed: 7 to 14 mph

Wind Direction: SE

Forecast: Rain. Mostly cloudy, with a low around 45. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.

Sunday

Temperature: 52°F

Wind Speed: 7 to 14 mph

Wind Direction: S

Forecast: Rain likely. Mostly cloudy, with a high near 52.

Sunday Night

Temperature: 43°F

Wind Speed: 7 mph

Wind Direction: SSE

Forecast: Rain likely. Mostly cloudy, with a low around 43.

Monday

Temperature: 49°F

Wind Speed: 5 mph

Wind Direction: S

Forecast: A chance of rain. Mostly cloudy, with a high near 49.

Monday Night

Temperature: 41°F

Wind Speed: 5 mph

Wind Direction: S

Forecast: A chance of rain. Mostly cloudy, with a low around 41.

Tuesday

Temperature: 47°F

Wind Speed: 5 to 8 mph

Wind Direction: S

Forecast: A chance of rain. Mostly cloudy, with a high near 47.

Tuesday Night

Temperature: 40°F

Wind Speed: 8 mph

Wind Direction: S

Forecast: Rain likely. Mostly cloudy, with a low around 40.

Wednesday

Temperature: 47°F

Wind Speed: 7 mph

Wind Direction: S

Forecast: Rain likely before 5pm. Mostly cloudy, with a high near 47.

Wednesday Night

Temperature: 39°F

Wind Speed: 7 mph

Wind Direction: S

Forecast: Mostly cloudy, with a low around 39.