Sumas, Washington | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast day icon
    Sunday
    Chance of Rain
    58°
    Forecast night icon
    Night
    Rain
    44°
    Sunday 5/5
    Day
    58°
    Chance of Rain
    Forecast day icon
    Night
    44°
    Rain
    Forecast night icon
    Hourly
    Day Details
    Breezy. Partly sunny in the morning then cloudy with a chance of rain early in the afternoon. Rain at times late in the afternoon. Rainfall amounts a tenth to a quarter of an inch possible. Highs in the 50s. South wind 15 to 25 mph.
    Night Details
    Rain at times in the evening then rain likely after midnight. Rainfall amounts a quarter to a half inch possible. Lows in the 40s. Southwest wind 10 to 20 mph becoming south after midnight. Gusts to 30 mph.
  • Forecast day icon
    Monday
    Chance of Storms
    53°
    Forecast night icon
    Night
    Chance of Storms
    41°
    Monday 5/6
    Day
    53°
    Chance of Storms
    Forecast day icon
    Night
    41°
    Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Showers in the morning then showers likely 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 50s. Southwest wind 10 to 20 mph.
    Night Details
    Breezy. Showers likely 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 40s. Southwest wind 10 to 20 mph becoming west 15 to 25 mph after midnight.
  • Forecast day icon
    Tuesday
    Chance of Rain
    55°
    Forecast night icon
    Night
    Mostly Clear
    37°
    Tuesday 5/7
    Day
    55°
    Chance of Rain
    Forecast day icon
    Night
    37°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Breezy. Partly sunny. A chance of rain in the morning then a slight chance of rain in the afternoon. Highs in the 50s. West wind 15 to 25 mph.
    Night Details
    Breezy. Mostly clear. Lows in the lower 40s.
  • Forecast day icon
    Wednesday
    Mostly Sunny
    60°
    Forecast night icon
    Night
    Mostly Clear
    39°
    Wednesday 5/8
    Day
    60°
    Mostly Sunny
    Forecast day icon
    Night
    39°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. Highs near 60.
    Night Details
    Mostly clear. Lows in the lower 40s.
  • Forecast day icon
    Thursday
    Sunny
    74°
    Forecast night icon
    Night
    Clear
    49°
    Thursday 5/9
    Day
    74°
    Sunny
    Forecast day icon
    Night
    49°
    Clear
    Forecast night icon
    Hourly
    Day Details
    Sunny. Highs near 70.
    Night Details
    Clear. Lows near 50.
  • Forecast day icon
    Friday
    Sunny
    79°
    Forecast night icon
    Night
    Clear
    49°
    Friday 5/10
    Day
    79°
    Sunny
    Forecast day icon
    Night
    49°
    Clear
    Forecast night icon
    Hourly
    Day Details
    Sunny. Highs in the 70s.
    Night Details
    Clear. Lows in the lower 50s.
  • Forecast day icon
    Saturday
    Sunny
    79°
    Forecast night icon
    Night
    Clear
    50°
    Saturday 5/11
    Day
    79°
    Sunny
    Forecast day icon
    Night
    50°
    Clear
    Forecast night icon
    Day Details
    Sunny. Highs in the 70s to lower 80s.
    Night Details
    Clear. Low temperature around 50F. Dew point will be around 50F with an average humidity of 78%. Winds will be 5 mph from the SE.
  • Forecast day icon
    Sunday
    Mostly Sunny
    70°
    Forecast night icon
    Night
    Mostly Clear
    48°
    Sunday 5/12
    Day
    70°
    Mostly Sunny
    Forecast day icon
    Night
    48°
    Mostly Clear
    Forecast night icon
    Day Details
    Mostly sunny. High temperature around 70F. Dew point will be around 50F with an average humidity of 62%. Winds will be 5 mph from the SW.
    Night Details
    Mostly clear. Low temperature around 48F. Dew point will be around 48F with an average humidity of 79%. Winds will be 6 mph from the S.
  • Forecast day icon
    Monday
    Partly Cloudy
    65°
    Forecast night icon
    Night
    Mostly Clear
    46°
    Monday 5/13
    Day
    65°
    Partly Cloudy
    Forecast day icon
    Night
    46°
    Mostly Clear
    Forecast night icon
    Day Details
    Partly cloudy. High temperature around 65F. Dew point will be around 47F with an average humidity of 67%. Winds will be 6 mph from the SW.
    Night Details
    Mostly clear. Low temperature around 46F. Dew point will be around 46F with an average humidity of 82%. Winds will be 6 mph from the S.
  • Forecast day icon
    Tuesday
    Mostly Cloudy
    64°
    Forecast night icon
    Night
    Mostly Clear
    45°
    Tuesday 5/14
    Day
    64°
    Mostly Cloudy
    Forecast day icon
    Night
    45°
    Mostly Clear
    Forecast night icon
    Day Details
    Mostly cloudy. High temperature around 64F. Dew point will be around 47F with an average humidity of 69%. Winds will be 6 mph from the SW.
    Night Details
    Mostly clear. Low temperature around 45F. Dew point will be around 46F with an average humidity of 85%. Winds will be 6 mph from the SW.