Weather in Mercer Island, Washington, United States

7-Day Detailed Weather Forecast for Mercer Island

Overnight

Temperature: 54°F

Wind Speed: 5 mph

Wind Direction: NE

Forecast: Clear, with a low around 54. Northeast wind around 5 mph.

Sunday

Temperature: 79°F

Wind Speed: 3 to 8 mph

Wind Direction: NNE

Forecast: Sunny, with a high near 79. North northeast wind 3 to 8 mph.

Sunday Night

Temperature: 59°F

Wind Speed: 2 to 8 mph

Wind Direction: NNE

Forecast: Mostly clear, with a low around 59. North northeast wind 2 to 8 mph.

Monday

Temperature: 83°F

Wind Speed: 2 to 7 mph

Wind Direction: N

Forecast: Sunny, with a high near 83. North wind 2 to 7 mph.

Monday Night

Temperature: 59°F

Wind Speed: 2 to 7 mph

Wind Direction: N

Forecast: Mostly clear, with a low around 59. North wind 2 to 7 mph.

Tuesday

Temperature: 81°F

Wind Speed: 2 to 7 mph

Wind Direction: N

Forecast: Sunny, with a high near 81.

Tuesday Night

Temperature: 57°F

Wind Speed: 2 to 7 mph

Wind Direction: NNE

Forecast: Mostly clear, with a low around 57.

Wednesday

Temperature: 77°F

Wind Speed: 2 to 6 mph

Wind Direction: WSW

Forecast: Mostly sunny, with a high near 77.

Wednesday Night

Temperature: 56°F

Wind Speed: 2 to 6 mph

Wind Direction: ESE

Forecast: Mostly cloudy, with a low around 56.

Thursday

Temperature: 73°F

Wind Speed: 2 to 6 mph

Wind Direction: WSW

Forecast: Mostly sunny, with a high near 73.

Thursday Night

Temperature: 55°F

Wind Speed: 2 to 6 mph

Wind Direction: NNE

Forecast: Partly cloudy, with a low around 55.

Independence Day

Temperature: 76°F

Wind Speed: 2 to 6 mph

Wind Direction: NNW

Forecast: Mostly sunny, with a high near 76.

Friday Night

Temperature: 55°F

Wind Speed: 2 to 6 mph

Wind Direction: NE

Forecast: Partly cloudy, with a low around 55.

Saturday

Temperature: 75°F

Wind Speed: 2 to 6 mph

Wind Direction: WSW

Forecast: Mostly sunny, with a high near 75.