Weather in Mercer Island, Washington, United States

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7-Day Detailed Weather Forecast for Mercer Island

Today

Temperature: 54°F

Wind Speed: 2 mph

Wind Direction: NE

Forecast: Patchy fog before 10am. Partly sunny. High near 54, with temperatures falling to around 51 in the afternoon. Northeast wind around 2 mph.

Tonight

Temperature: 39°F

Wind Speed: 2 mph

Wind Direction: SE

Forecast: Mostly cloudy, with a low around 39. Southeast wind around 2 mph.

Monday

Temperature: 54°F

Wind Speed: 1 mph

Wind Direction: NE

Forecast: Mostly cloudy. High near 54, with temperatures falling to around 52 in the afternoon. Northeast wind around 1 mph.

Monday Night

Temperature: 45°F

Wind Speed: 2 mph

Wind Direction: NNE

Forecast: Cloudy, with a low around 45. North northeast wind around 2 mph.

Tuesday

Temperature: 58°F

Wind Speed: 3 mph

Wind Direction: N

Forecast: Mostly cloudy, with a high near 58. North wind around 3 mph.

Tuesday Night

Temperature: 43°F

Wind Speed: 2 mph

Wind Direction: ENE

Forecast: Partly cloudy, with a low around 43.

Wednesday

Temperature: 58°F

Wind Speed: 3 mph

Wind Direction: S

Forecast: Rain likely after 4pm. Partly sunny, with a high near 58.

Wednesday Night

Temperature: 48°F

Wind Speed: 2 to 8 mph

Wind Direction: S

Forecast: Rain likely. Mostly cloudy, with a low around 48.

Thursday

Temperature: 58°F

Wind Speed: 2 to 7 mph

Wind Direction: S

Forecast: A chance of rain. Mostly cloudy, with a high near 58.

Thursday Night

Temperature: 47°F

Wind Speed: 2 to 10 mph

Wind Direction: S

Forecast: Rain likely. Mostly cloudy, with a low around 47.

Friday

Temperature: 57°F

Wind Speed: 2 to 10 mph

Wind Direction: S

Forecast: Rain likely. Mostly cloudy, with a high near 57.

Friday Night

Temperature: 45°F

Wind Speed: 3 mph

Wind Direction: SSE

Forecast: A slight chance of rain. Mostly cloudy, with a low around 45.

Saturday

Temperature: 58°F

Wind Speed: 2 mph

Wind Direction: SSE

Forecast: A chance of rain. Mostly cloudy, with a high near 58.

Saturday Night

Temperature: 48°F

Wind Speed: 2 to 6 mph

Wind Direction: SSE

Forecast: Rain likely. Cloudy, with a low around 48.