Mercer Island, Washington | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast day icon
    Saturday
    80% Chance of Rain
    51°
    Forecast night icon
    Night
    Chance of Rain Showers
    48°
    Saturday 4/27
    Day
    51°
    80% Chance of Rain
    Forecast day icon
    Night
    48°
    Chance of Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy with probable rain. Chance of precipitation 75%. High temperature around 51F. Dew point will be around 46F with an average humidity of 81%. Winds will be 7 mph from the S.
    Night Details
    Mostly cloudy. Rain likely in the evening then a chance of showers in the late evening and early morning. A slight chance of showers late in the night. Rainfall amounts less than a tenth of an inch likely. Lows in the mid to upper 40s. South wind 10 to 15 mph.
  • Forecast day icon
    Sunday
    Chance of Rain Showers
    52°
    Forecast night icon
    Night
    Chance of Storms
    43°
    Sunday 4/28
    Day
    52°
    Chance of Rain Showers
    Forecast day icon
    Night
    43°
    Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    A chance of showers in the morning then showers in the afternoon. Rainfall amounts a tenth to a quarter of an inch possible. Highs in the lower to mid 50s. South wind 10 to 15 mph becoming southwest in the afternoon. Gusts to 25 mph.
    Night Details
    Showers and a slight chance of thunderstorms in the evening then showers after midnight. Rainfall amounts a tenth to a quarter of an inch possible except higher amounts possible in thunderstorms. Lows in the upper 30s to mid 40s. Southwest wind 10 to 15 mph with gusts to 25 mph.
  • Forecast day icon
    Monday
    Chance of Storms
    52°
    Forecast night icon
    Night
    Chance of Storms
    43°
    Monday 4/29
    Day
    52°
    Chance of Storms
    Forecast day icon
    Night
    43°
    Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Showers likely in the morning then showers and a slight chance of thunderstorms in the afternoon. Rainfall amounts a tenth to a quarter of an inch possible except higher amounts possible in thunderstorms. Highs in the lower to mid 50s. Southwest wind 10 to 15 mph with gusts to 25 mph.
    Night Details
    Showers and a slight chance of thunderstorms in the evening then showers likely after midnight. Rainfall amounts a tenth to a quarter of an inch possible except higher amounts possible in thunderstorms. Lows in the upper 30s to mid 40s. Southwest wind 10 to 20 mph becoming south 10 to 15 mph after midnight.
  • Forecast day icon
    Tuesday
    Chance of Rain Showers
    54°
    Forecast night icon
    Night
    Chance of Rain Showers
    43°
    Tuesday 4/30
    Day
    54°
    Chance of Rain Showers
    Forecast day icon
    Night
    43°
    Chance of Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy with a chance of showers in the morning then mostly cloudy with showers likely in the afternoon. Highs in the lower to mid 50s.
    Night Details
    Mostly cloudy with a slight chance of showers in the evening then partly cloudy after midnight. Lows in the lower 40s.
  • Forecast day icon
    Wednesday
    Partly Sunny
    60°
    Forecast night icon
    Night
    Chance of Rain Showers
    45°
    Wednesday 5/1
    Day
    60°
    Partly Sunny
    Forecast day icon
    Night
    45°
    Chance of Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Partly sunny. Highs near 60.
    Night Details
    Mostly cloudy. A slight chance of showers in the evening then a chance of showers after midnight. Lows in the lower to mid 40s.
  • Forecast day icon
    Thursday
    Chance of Rain Showers
    59°
    Forecast night icon
    Night
    Chance of Rain Showers
    46°
    Thursday 5/2
    Day
    59°
    Chance of Rain Showers
    Forecast day icon
    Night
    46°
    Chance of Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Partly sunny with a chance of showers. Highs in the lower 60s.
    Night Details
    Mostly cloudy in the evening then becoming partly cloudy. A slight chance of showers. Lows in the mid to upper 40s.
  • Forecast day icon
    Friday
    Chance of Rain Showers
    60°
    Forecast night icon
    Night
    Chance of Rain Showers
    52°
    Friday 5/3
    Day
    60°
    Chance of Rain Showers
    Forecast day icon
    Night
    52°
    Chance of Rain Showers
    Forecast night icon
    Day Details
    Partly sunny. A slight chance of showers in the afternoon. Highs in the lower to mid 60s.
    Night Details
    Partly cloudy. A slight chance of showers in the evening. Lows in the mid to upper 40s.
  • Forecast day icon
    Saturday
    Chance of Rain Showers
    60°
    Forecast night icon
    Night
    40% Chance of Rain
    49°
    Saturday 5/4
    Day
    60°
    Chance of Rain Showers
    Forecast day icon
    Night
    49°
    40% Chance of Rain
    Forecast night icon
    Day Details
    Partly sunny. A slight chance of showers in the morning then a chance of showers in the afternoon. Highs in the mid 60s.
    Night Details
    Cloudy with a chance of rain. Chance of precipitation 35%. Low temperature around 49F. Dew point will be around 46F with an average humidity of 77%. Winds will be 1 mph from the S.
  • Forecast day icon
    Sunday
    40% Chance of Rain
    58°
    Forecast night icon
    Night
    30% Chance of Rain
    46°
    Sunday 5/5
    Day
    58°
    40% 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 35%. High temperature around 58F. Dew point will be around 44F with an average humidity of 70%. Winds will be 1 mph from the S.
    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 2 mph from the S.
  • Forecast day icon
    Monday
    40% Chance of Rain
    59°
    Forecast night icon
    Night
    40% Chance of Rain
    48°
    Monday 5/6
    Day
    59°
    40% Chance of Rain
    Forecast day icon
    Night
    48°
    40% Chance of Rain
    Forecast night icon
    Day Details
    Cloudy with a chance of rain. Chance of precipitation 35%. High temperature around 59F. Dew point will be around 43F with an average humidity of 65%. Winds will be 2 mph from the SW.
    Night Details
    Cloudy with a chance of rain. Chance of precipitation 35%. Low temperature around 48F. Dew point will be around 44F with an average humidity of 73%. Winds will be 2 mph from the S.