10-Day Weather Forecast - Mercer Island, WA

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  • 44|39°F
    Cloudy
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    Today

    44°F

    Cloudy. High temperature around 44F. Dew point will be around 38F with an average humidity of 84%. Winds will be 1 mph from the SE.

    Tonight

    39°F

    Cloudy. A chance of rain after midnight. Lows near 40. Light wind becoming north to 10 mph after midnight.

    Hourly details
  • Day

    49°F

    Windy. Rain at times. Rainfall amounts a tenth to a quarter of an inch possible. Highs near 50. North wind 10 to 20 mph with gusts to 45 mph increasing to southeast 20 to 35 mph with gusts to 55 mph in the afternoon.

    Night

    38°F

    Breezy. Partly cloudy. A slight chance of rain in the evening. Lows in the mid 30s to lower 40s. South wind 15 to 25 mph with gusts to 50 mph becoming east around 10 mph after midnight.

    Hourly details
  • Day

    44°F

    Mostly cloudy. A chance of rain in the afternoon. Highs in the mid to upper 40s. Light wind.

    Night

    37°F

    Rain at times. Patchy fog after midnight. Rainfall amounts a tenth to a quarter of an inch possible. Lows near 40. Light wind.

    Hourly details
  • Day

    45°F

    Rain likely. Highs in the mid 40s.

    Night

    36°F

    Mostly cloudy. A chance of rain in the evening then a slight chance of rain after midnight. Lows in the mid to upper 30s.

    Hourly details
  • Weekend Weather

  • Day

    42°F

    Mostly cloudy. Highs in the lower to mid 40s.

    Night

    34°F

    Mostly cloudy. Lows in the mid 30s.

    Hourly details
  • Day

    44°F

    Mostly cloudy. Highs in the mid to upper 40s.

    Night

    36°F

    Mostly cloudy. Lows in the mid to upper 30s.

    Hourly details
  • Day

    46°F

    Mostly cloudy. A slight chance of rain in the afternoon. Highs in the upper 40s.

    Night

    38°F

    Mostly cloudy. A slight chance of rain in the evening then a chance of rain after midnight. Lows in the upper 30s.

  • Day

    47°F

    Mostly cloudy with a chance of rain. Highs near 50.

    Night

    40°F

    Partly cloudy with a slight chance of rain. Chance of precipitation 25%. Low temperature around 40F. Dew point will be around 37F with an average humidity of 86%. Winds will be 2 mph from the S.

  • Day

    44°F

    Cloudy with a chance of rain. Chance of precipitation 35%. High temperature around 44F. Dew point will be around 38F with an average humidity of 82%. Winds will be 2 mph from the S.

    Night

    40°F

    Cloudy with a chance of rain. Chance of precipitation 35%. Low temperature around 40F. Dew point will be around 38F with an average humidity of 90%. Winds will be 2 mph from the S.

  • Day

    42°F

    Cloudy with a chance of rain. Chance of precipitation 50%. High temperature around 42F. Dew point will be around 38F with an average humidity of 89%. Winds will be 3 mph from the SW.

    Night

    38°F

    Cloudy with a chance of rain. Chance of precipitation 60%. Low temperature around 38F. Dew point will be around 37F with an average humidity of 92%. Winds will be 3 mph from the SW.