Mercer Island, Washington | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast day icon
    Tuesday
    Mostly Sunny
    69°
    Forecast night icon
    Night
    Partly Cloudy
    49°
    Tuesday 4/23
    Day
    69°
    Mostly Sunny
    Forecast day icon
    Night
    49°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. High temperature around 69F. Dew point will be around 37F with an average humidity of 47%. Winds will be 3 mph from the NW.
    Night Details
    Partly cloudy in the evening then becoming mostly cloudy. Lows in the 40s. North wind to 10 mph becoming south after midnight.
  • Forecast day icon
    Wednesday
    Chance of Rain
    56°
    Forecast night icon
    Night
    Chance of Rain Showers
    49°
    Wednesday 4/24
    Day
    56°
    Chance of Rain
    Forecast day icon
    Night
    49°
    Chance of Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy. A slight chance of rain late in the morning. A chance of rain in the afternoon. Highs in the mid 50s to lower 60s. South wind 10 to 15 mph becoming southwest in the afternoon.
    Night Details
    Mostly cloudy with a chance of showers. Lows in the mid to upper 40s. Southwest wind 10 to 15 mph becoming south after midnight.
  • Forecast day icon
    Thursday
    Rain
    54°
    Forecast night icon
    Night
    Rain
    50°
    Thursday 4/25
    Day
    54°
    Rain
    Forecast day icon
    Night
    50°
    Rain
    Forecast night icon
    Hourly
    Day Details
    Rain likely in the morning then rain at times 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.
    Night Details
    Rain at times. Rainfall amounts a tenth to a quarter of an inch possible. Lows in the mid 40s to lower 50s. South wind 10 to 15 mph.
  • Forecast day icon
    Friday
    Rain Showers
    56°
    Forecast night icon
    Night
    Chance of Rain Showers
    48°
    Friday 4/26
    Day
    56°
    Rain Showers
    Forecast day icon
    Night
    48°
    Chance of Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Showers. Highs in the mid to upper 50s.
    Night Details
    Mostly cloudy with showers likely in the evening then mostly cloudy with a chance of showers after midnight. Lows in the mid to upper 40s.
  • Forecast day icon
    Saturday
    Chance of Rain Showers
    57°
    Forecast night icon
    Night
    Chance of Rain Showers
    49°
    Saturday 4/27
    Day
    57°
    Chance of Rain Showers
    Forecast day icon
    Night
    49°
    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 upper 50s.
    Night Details
    Mostly cloudy with showers likely in the evening then mostly cloudy with a chance of showers after midnight. Lows in the mid 40s.
  • Forecast day icon
    Sunday
    Chance of Rain Showers
    56°
    Forecast night icon
    Night
    Chance of Rain Showers
    46°
    Sunday 4/28
    Day
    56°
    Chance of Rain Showers
    Forecast day icon
    Night
    46°
    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 mid to upper 50s.
    Night Details
    Mostly cloudy with showers likely in the evening then mostly cloudy with a chance of rain after midnight. Lows in the lower 40s.
  • Forecast day icon
    Monday
    Chance of Rain
    54°
    Forecast night icon
    Night
    Chance of Rain Showers
    42°
    Monday 4/29
    Day
    54°
    Chance of Rain
    Forecast day icon
    Night
    42°
    Chance of Rain Showers
    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 a chance of showers. Lows in the lower to mid 40s.
  • Forecast day icon
    Tuesday
    Chance of Rain Showers
    55°
    Forecast night icon
    Night
    40% Chance of Rain
    43°
    Tuesday 4/30
    Day
    55°
    Chance of Rain Showers
    Forecast day icon
    Night
    43°
    40% Chance of Rain
    Forecast night icon
    Day Details
    Partly sunny with a chance of showers. Highs in the upper 50s.
    Night Details
    Cloudy with a chance of rain. Chance of precipitation 35%. Low temperature around 43F. Dew point will be around 39F with an average humidity of 74%. Winds will be 1 mph from the SE.
  • Forecast day icon
    Wednesday
    40% Chance of Rain
    59°
    Forecast night icon
    Night
    40% Chance of Rain
    46°
    Wednesday 5/1
    Day
    59°
    40% Chance of Rain
    Forecast day icon
    Night
    46°
    40% Chance of Rain
    Forecast night icon
    Day Details
    Cloudy with a chance of rain. Chance of precipitation 40%. High temperature around 59F. Dew point will be around 40F with an average humidity of 59%. Winds will be 1 mph from the NW.
    Night Details
    Cloudy with a chance of rain. Chance of precipitation 35%. Low temperature around 46F. Dew point will be around 41F with an average humidity of 72%. Winds will be 1 mph from the E.
  • Forecast day icon
    Thursday
    50% Chance of Rain
    59°
    Forecast night icon
    Night
    40% Chance of Rain
    47°
    Thursday 5/2
    Day
    59°
    50% Chance of Rain
    Forecast day icon
    Night
    47°
    40% Chance of Rain
    Forecast night icon
    Day Details
    Cloudy with a chance of rain. Chance of precipitation 50%. High temperature around 59F. Dew point will be around 44F with an average humidity of 66%. Winds will be 1 mph from the W.
    Night Details
    Cloudy with a chance of rain. Chance of precipitation 40%. Low temperature around 47F. Dew point will be around 44F with an average humidity of 75%. Winds will be 1 mph from the SE.