Weather in Mercer Island, Washington, United States

7-Day Detailed Weather Forecast for Mercer Island

This Afternoon

Temperature: 52°F

Wind Speed: 18 mph

Wind Direction: SSW

Forecast: Mostly sunny. High near 52, with temperatures falling to around 47 in the afternoon. South southwest wind around 18 mph, with gusts as high as 25 mph.

Tonight

Temperature: 38°F

Wind Speed: 3 to 9 mph

Wind Direction: E

Forecast: Partly cloudy, with a low around 38. East wind 3 to 9 mph.

Christmas Day

Temperature: 46°F

Wind Speed: 2 to 6 mph

Wind Direction: NNE

Forecast: Rain likely after 10am. Mostly cloudy. High near 46, with temperatures falling to around 44 in the afternoon. North northeast wind 2 to 6 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.

Thursday Night

Temperature: 39°F

Wind Speed: 5 mph

Wind Direction: ESE

Forecast: Rain likely. Mostly cloudy, with a low around 39. East southeast wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.

Friday

Temperature: 45°F

Wind Speed: 5 to 9 mph

Wind Direction: S

Forecast: Rain. Mostly cloudy, with a high near 45. South wind 5 to 9 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.

Friday Night

Temperature: 35°F

Wind Speed: 2 to 8 mph

Wind Direction: SSW

Forecast: Rain likely before 10pm, then a chance of rain and snow between 10pm and 1am, then a chance of rain and snow between 1am and 4am. Mostly cloudy, with a low around 35. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.

Saturday

Temperature: 43°F

Wind Speed: 2 mph

Wind Direction: S

Forecast: Partly sunny, with a high near 43.

Saturday Night

Temperature: 35°F

Wind Speed: 2 mph

Wind Direction: ESE

Forecast: Mostly cloudy, with a low around 35.

Sunday

Temperature: 44°F

Wind Speed: 2 mph

Wind Direction: ENE

Forecast: Mostly cloudy, with a high near 44.

Sunday Night

Temperature: 34°F

Wind Speed: 2 mph

Wind Direction: NE

Forecast: Mostly cloudy, with a low around 34.

Monday

Temperature: 46°F

Wind Speed: 2 mph

Wind Direction: NNE

Forecast: Mostly cloudy, with a high near 46.

Monday Night

Temperature: 36°F

Wind Speed: 2 mph

Wind Direction: NE

Forecast: Mostly cloudy, with a low around 36.

Tuesday

Temperature: 48°F

Wind Speed: 2 mph

Wind Direction: ENE

Forecast: Mostly cloudy, with a high near 48.

Tuesday Night

Temperature: 38°F

Wind Speed: 3 mph

Wind Direction: E

Forecast: A slight chance of rain after 4am. Mostly cloudy, with a low around 38.