Sumas, Washington | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast night icon
    Night
    Mostly Clear
    44°
    Sunday 5/19
    Forecast night icon
    44°
    Mostly Clear
    Hourly
    Night Details
    Mostly clear. Lows in the 40s. West wind to 10 mph becoming south after midnight.
  • Forecast day icon
    Monday
    Partly Sunny
    63°
    Forecast night icon
    Night
    Chance of Rain Showers
    47°
    Monday 5/20
    Day
    63°
    Partly Sunny
    Forecast day icon
    Night
    47°
    Chance of Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Partly sunny. Highs in the upper 50s to mid 60s. Light wind becoming southwest around 10 mph in the afternoon.
    Night Details
    Mostly cloudy. A chance of showers after midnight. Lows in the mid 40s to lower 50s. South wind 10 to 15 mph.
  • Forecast day icon
    Tuesday
    Rain
    55°
    Forecast night icon
    Night
    Rain
    44°
    Tuesday 5/21
    Day
    55°
    Rain
    Forecast day icon
    Night
    44°
    Rain
    Forecast night icon
    Hourly
    Day Details
    Rain. Rainfall amounts a half inch to one inch possible. Highs in the 50s. South wind 10 to 20 mph.
    Night Details
    Rain in the evening then showers after midnight. Rainfall amounts a half inch to one inch possible. Lows in the 40s. South wind 10 to 15 mph becoming southwest after midnight.
  • Forecast day icon
    Wednesday
    Chance of Rain Showers
    58°
    Forecast night icon
    Night
    Partly Cloudy
    42°
    Wednesday 5/22
    Day
    58°
    Chance of Rain Showers
    Forecast day icon
    Night
    42°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy with showers likely in the morning then mostly cloudy with a slight chance of showers in the afternoon. Highs near 60.
    Night Details
    Mostly cloudy in the evening then becoming partly cloudy. Lows in the mid to upper 40s.
  • Forecast day icon
    Thursday
    Partly Sunny
    62°
    Forecast night icon
    Night
    Chance of Rain Showers
    48°
    Thursday 5/23
    Day
    62°
    Partly Sunny
    Forecast day icon
    Night
    48°
    Chance of Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Partly sunny. Highs in the lower to mid 60s.
    Night Details
    Mostly cloudy. A chance of showers after midnight. Lows near 50.
  • Forecast day icon
    Friday
    Chance of Rain Showers
    59°
    Forecast night icon
    Night
    Chance of Rain Showers
    43°
    Friday 5/24
    Day
    59°
    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. Highs near 60.
    Night Details
    Mostly cloudy with a chance of showers. Lows in the mid to upper 40s.
  • Forecast day icon
    Saturday
    Chance of Rain Showers
    54°
    Forecast night icon
    Night
    Chance of Rain Showers
    43°
    Saturday 5/25
    Day
    54°
    Chance of Rain Showers
    Forecast day icon
    Night
    43°
    Chance of Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Partly sunny with a chance of showers. Highs near 60.
    Night Details
    Mostly cloudy with a chance of showers. Lows in the mid to upper 40s.
  • Forecast day icon
    Sunday
    Chance of Rain Showers
    59°
    Forecast night icon
    Night
    30% Chance of Rain
    46°
    Sunday 5/26
    Day
    59°
    Chance of Rain Showers
    Forecast day icon
    Night
    46°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Mostly cloudy with a chance of showers. Highs in the lower 60s.
    Night Details
    Partly cloudy with a slight chance of rain. Chance of precipitation 25%. Low temperature around 46F. Dew point will be around 46F with an average humidity of 88%. Winds will be 2 mph from the S.
  • Forecast day icon
    Monday
    30% Chance of Rain
    64°
    Forecast night icon
    Night
    30% Chance of Rain
    46°
    Monday 5/27
    Day
    64°
    30% Chance of Rain
    Forecast day icon
    Night
    46°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Mostly cloudy with a slight chance of rain. Chance of precipitation 30%. High temperature around 64F. Dew point will be around 48F with an average humidity of 68%. Winds will be 4 mph from the SW.
    Night Details
    Mostly clear with a slight chance of rain. Chance of precipitation 25%. Low temperature around 46F. Dew point will be around 46F with an average humidity of 85%. Winds will be 2 mph from the S.
  • Forecast day icon
    Tuesday
    30% Chance of Rain
    66°
    Forecast night icon
    Night
    30% Chance of Rain
    48°
    Tuesday 5/28
    Day
    66°
    30% Chance of Rain
    Forecast day icon
    Night
    48°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Partly cloudy with a slight chance of rain. Chance of precipitation 25%. High temperature around 66F. Dew point will be around 50F with an average humidity of 67%. Winds will be 4 mph from the SW.
    Night Details
    Partly cloudy with a slight chance of rain. Chance of precipitation 30%. Low temperature around 48F. Dew point will be around 48F with an average humidity of 84%. Winds will be 3 mph from the S.