Mercer Island, Washington | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast day icon
    Thursday
    Rain
    55°
    Forecast night icon
    Night
    Chance of Rain
    49°
    Thursday 4/25
    Day
    55°
    Rain
    Forecast day icon
    Night
    49°
    Chance of Rain
    Forecast night icon
    Hourly
    Day Details
    Rain. Rainfall amounts a quarter to a half inch possible. Highs in the lower to mid 50s. South wind 10 to 15 mph.
    Night Details
    Rain in the evening then cloudy with a chance of rain after midnight. Rainfall amounts a quarter to a half inch possible. Lows near 50. South wind 10 to 15 mph with gusts to 25 mph.
  • Forecast day icon
    Friday
    Rain
    58°
    Forecast night icon
    Night
    Chance of Rain
    49°
    Friday 4/26
    Day
    58°
    Rain
    Forecast day icon
    Night
    49°
    Chance of Rain
    Forecast night icon
    Hourly
    Day Details
    Rain at times. Rainfall amounts a tenth to a quarter of an inch possible. Highs in the mid 50s to lower 60s. South wind 10 to 15 mph.
    Night Details
    Mostly cloudy with rain likely in the evening then mostly cloudy with a chance of rain after midnight. Rainfall amounts less than a tenth of an inch likely. Lows in the mid 40s to lower 50s. Southwest wind 10 to 15 mph becoming south after midnight.
  • Forecast day icon
    Saturday
    Chance of Rain
    54°
    Forecast night icon
    Night
    Rain
    48°
    Saturday 4/27
    Day
    54°
    Chance of Rain
    Forecast day icon
    Night
    48°
    Rain
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy with a chance of rain in the morning then mostly cloudy with rain likely in the afternoon. Rainfall amounts less than a tenth of an inch likely. Highs in the 50s. South wind 10 to 20 mph becoming southwest 10 to 15 mph in the afternoon. Gusts to 30 mph.
    Night Details
    Rain likely. Lows in the upper 40s.
  • Forecast day icon
    Sunday
    Chance of Rain
    56°
    Forecast night icon
    Night
    Chance of Rain
    44°
    Sunday 4/28
    Day
    56°
    Chance of Rain
    Forecast day icon
    Night
    44°
    Chance of Rain
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy with a chance of rain in the morning then rain at times in the afternoon. Highs in the mid to upper 50s.
    Night Details
    Mostly cloudy with rain at times in the evening then mostly cloudy with a chance of rain after midnight. Lows in the lower to mid 40s.
  • Forecast day icon
    Monday
    Chance of Rain
    53°
    Forecast night icon
    Night
    Chance of Rain
    43°
    Monday 4/29
    Day
    53°
    Chance of Rain
    Forecast day icon
    Night
    43°
    Chance of Rain
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy with a chance of rain in the morning then mostly cloudy with rain likely in the afternoon. Highs in the mid 50s.
    Night Details
    Mostly cloudy with rain likely in the evening then mostly cloudy with a chance of rain after midnight. Lows in the lower 40s.
  • Forecast day icon
    Tuesday
    Chance of Rain
    58°
    Forecast night icon
    Night
    Chance of Rain
    48°
    Tuesday 4/30
    Day
    58°
    Chance of Rain
    Forecast day icon
    Night
    48°
    Chance of Rain
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy with a chance of rain. Highs in the mid to upper 50s.
    Night Details
    Mostly cloudy. A chance of rain in the evening then a slight chance of rain after midnight. Lows in the lower to mid 40s.
  • Forecast day icon
    Wednesday
    Chance of Rain
    61°
    Forecast night icon
    Night
    60% Chance of Rain
    45°
    Wednesday 5/1
    Day
    61°
    Chance of Rain
    Forecast day icon
    Night
    45°
    60% Chance of Rain
    Forecast night icon
    Day Details
    Mostly cloudy with a chance of rain. Highs near 60.
    Night Details
    Cloudy with a chance of rain. Chance of precipitation 55%. Low temperature around 45F. Dew point will be around 43F with an average humidity of 78%. Winds will be 2 mph from the SW.
  • Forecast day icon
    Thursday
    60% Chance of Rain
    59°
    Forecast night icon
    Night
    30% Chance of Rain
    46°
    Thursday 5/2
    Day
    59°
    60% Chance of Rain
    Forecast day icon
    Night
    46°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Cloudy with a chance of rain. Chance of precipitation 60%. High temperature around 59F. Dew point will be around 42F with an average humidity of 63%. Winds will be 1 mph from the N.
    Night Details
    Cloudy with a slight chance of rain. Chance of precipitation 30%. Low temperature around 46F. Dew point will be around 43F with an average humidity of 75%. Winds will be 1 mph from the SE.
  • Forecast day icon
    Friday
    30% Chance of Rain
    59°
    Forecast night icon
    Night
    30% Chance of Rain
    47°
    Friday 5/3
    Day
    59°
    30% Chance of Rain
    Forecast day icon
    Night
    47°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Cloudy with a slight chance of rain. Chance of precipitation 30%. High temperature around 59F. Dew point will be around 43F with an average humidity of 65%. Winds will be 1 mph from the W.
    Night Details
    Cloudy with a slight chance of rain. Chance of precipitation 30%. Low temperature around 47F. Dew point will be around 43F with an average humidity of 75%. Winds will be 2 mph from the SW.
  • Forecast day icon
    Saturday
    30% Chance of Rain
    60°
    Forecast night icon
    Night
    30% Chance of Rain
    47°
    Saturday 5/4
    Day
    60°
    30% Chance of Rain
    Forecast day icon
    Night
    47°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Cloudy with a slight chance of rain. Chance of precipitation 30%. High temperature around 60F. Dew point will be around 42F with an average humidity of 59%. Winds will be 1 mph from the SW.
    Night Details
    Cloudy with a slight chance of rain. Chance of precipitation 30%. Low temperature around 47F. Dew point will be around 44F with an average humidity of 73%. Winds will be 1 mph from the S.