Weather in Mercer Island, Washington, United States

7-Day Detailed Weather Forecast for Mercer Island

This Afternoon

Temperature: 55°F

Wind Speed: 16 mph

Wind Direction: SSW

Forecast: Rain. Cloudy, with a high near 55. South southwest wind around 16 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

Tonight

Temperature: 43°F

Wind Speed: 17 mph

Wind Direction: SW

Forecast: Rain. Mostly cloudy, with a low around 43. Southwest wind around 17 mph, with gusts as high as 38 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

Wednesday

Temperature: 48°F

Wind Speed: 10 to 15 mph

Wind Direction: SW

Forecast: Rain likely. Mostly cloudy. High near 48, with temperatures falling to around 46 in the afternoon. Southwest wind 10 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.

Wednesday Night

Temperature: 42°F

Wind Speed: 10 mph

Wind Direction: S

Forecast: Rain. Cloudy, with a low around 42. South wind around 10 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch possible.

Thursday

Temperature: 52°F

Wind Speed: 7 to 13 mph

Wind Direction: S

Forecast: Rain. Cloudy, with a high near 52. South wind 7 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

Thursday Night

Temperature: 40°F

Wind Speed: 7 to 13 mph

Wind Direction: SSW

Forecast: Rain. Mostly cloudy, with a low around 40. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.

Friday

Temperature: 46°F

Wind Speed: 9 mph

Wind Direction: SSW

Forecast: Rain. Mostly cloudy, with a high near 46.

Friday Night

Temperature: 40°F

Wind Speed: 10 mph

Wind Direction: SSW

Forecast: Rain. Cloudy, with a low around 40.

Saturday

Temperature: 45°F

Wind Speed: 9 mph

Wind Direction: SSW

Forecast: Rain. Mostly cloudy, with a high near 45.

Saturday Night

Temperature: 39°F

Wind Speed: 5 to 8 mph

Wind Direction: S

Forecast: Rain likely. Mostly cloudy, with a low around 39.

Sunday

Temperature: 47°F

Wind Speed: 6 mph

Wind Direction: SSE

Forecast: Rain. Mostly cloudy, with a high near 47.

Sunday Night

Temperature: 41°F

Wind Speed: 8 mph

Wind Direction: S

Forecast: Rain. Mostly cloudy, with a low around 41.

Monday

Temperature: 48°F

Wind Speed: 8 mph

Wind Direction: S

Forecast: Rain likely. Mostly cloudy, with a high near 48.

Monday Night

Temperature: 39°F

Wind Speed: 7 mph

Wind Direction: S

Forecast: Rain likely before 4am, then a chance of rain and snow. Mostly cloudy, with a low around 39.