10-Day Weather Forecast - Mercer Island, WA

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  • |49°F
    Chance of Rain
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    Tonight

    49°F

    Cloudy in the evening then a chance of rain in the late evening and early morning. Cloudy with rain at times late in the night. Rainfall amounts a tenth to a quarter of an inch possible. Lows near 50. South wind around 10 mph with gusts to 20 mph.

    Hourly details
  • Day

    55°F

    Rain at times. Rainfall amounts a tenth to a quarter of an inch possible. Highs in the mid to upper 50s. South wind around 10 mph with gusts to 20 mph.

    Night

    50°F

    Rain. Rainfall amounts a half inch to one inch possible. Lows in the lower 50s. South wind to 10 mph. Gusts to 20 mph in the evening.

    Hourly details
  • Day

    55°F

    Rain at times. Rainfall amounts a quarter to a half inch possible. Highs in the mid to upper 50s. South wind around 10 mph with gusts to 20 mph.

    Night

    51°F

    Rain at times. Rainfall amounts a tenth to a quarter of an inch possible. Lows in the lower to mid 50s. South wind around 10 mph.

    Hourly details
  • Day

    57°F

    Rain at times. Highs near 60.

    Night

    51°F

    Rain at times. Lows in the lower 50s.

    Hourly details
  • Day

    57°F

    Rain at times in the morning then rain likely in the afternoon. Highs in the upper 50s.

    Night

    43°F

    Mostly cloudy with rain likely in the evening then mostly cloudy with a chance of rain after midnight. Lows in the lower 40s.

    Hourly details
  • Weekend Weather

  • Day

    48°F

    Mostly cloudy with a chance of rain. Highs in the lower to mid 50s.

    Night

    36°F

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

    Hourly details
  • Day

    50°F

    Partly sunny. A chance of rain and snow in the morning then a chance of rain in the afternoon. Highs in the lower to mid 50s.

    Night

    37°F

    Mostly cloudy with a chance of rain. Lows in the mid to upper 30s.

    Hourly details
  • Day

    50°F

    Mostly cloudy with a chance of rain. Highs in the lower 50s.

    Night

    38°F

    Cloudy with a chance of rain. Chance of precipitation 55%. Low temperature around 38F. Dew point will be around 35F with an average humidity of 81%. Winds will be 3 mph from the S.

  • Day

    44°F

    Cloudy with probable rain. Chance of precipitation 65%. High temperature around 44F. Dew point will be around 36F with an average humidity of 79%. Winds will be 6 mph from the SW.

    Night

    34°F

    Cloudy with a chance of rain. Chance of precipitation 60%. Low temperature around 34F. Dew point will be around 33F with an average humidity of 86%. Winds will be 5 mph from the SW.

  • Day

    44°F

    Cloudy with a chance of rain. Chance of precipitation 40%. High temperature around 44F. Dew point will be around 34F with an average humidity of 76%. Winds will be 6 mph from the SW.

    Night

    33°F

    Cloudy with a chance of rain. Chance of precipitation 40%. Low temperature around 33F. Dew point will be around 32F with an average humidity of 84%. Winds will be 4 mph from the S.