Sumas, Washington | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast day icon
    Saturday
    Sunny
    75°
    Forecast night icon
    Night
    Mostly Clear
    49°
    Saturday 5/11
    Day
    75°
    Sunny
    Forecast day icon
    Night
    49°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Sunny. Highs in the upper 60s to mid 70s. Light wind becoming west around 10 mph in the afternoon.
    Night Details
    Mostly clear. Lows in the upper 40s to mid 50s. Southwest wind to 10 mph increasing to south 10 to 20 mph after midnight.
  • Forecast day icon
    Sunday
    Mostly Sunny
    69°
    Forecast night icon
    Night
    Partly Cloudy
    51°
    Sunday 5/12
    Day
    69°
    Mostly Sunny
    Forecast day icon
    Night
    51°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. Highs in the 60s. Southwest wind 10 to 20 mph becoming west 10 to 15 mph in the afternoon.
    Night Details
    Partly cloudy in the evening then becoming mostly cloudy. Lows in the upper 40s to mid 50s. South wind 10 to 15 mph.
  • Forecast day icon
    Monday
    Chance of Rain Showers
    62°
    Forecast night icon
    Night
    Mostly Cloudy
    44°
    Monday 5/13
    Day
    62°
    Chance of Rain Showers
    Forecast day icon
    Night
    44°
    Mostly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy. A slight chance of showers in the morning. Highs in the upper 50s to mid 60s. South wind 10 to 15 mph.
    Night Details
    Mostly cloudy. Lows in the upper 40s.
  • Forecast day icon
    Tuesday
    Mostly Sunny
    67°
    Forecast night icon
    Night
    Partly Cloudy
    45°
    Tuesday 5/14
    Day
    67°
    Mostly Sunny
    Forecast day icon
    Night
    45°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. Highs in the 60s.
    Night Details
    Partly cloudy. Lows near 50.
  • Forecast day icon
    Wednesday
    Chance of Rain Showers
    69°
    Forecast night icon
    Night
    Chance of Rain Showers
    47°
    Wednesday 5/15
    Day
    69°
    Chance of Rain Showers
    Forecast day icon
    Night
    47°
    Chance of Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Partly sunny with a slight chance of showers. Highs in the mid 60s to lower 70s.
    Night Details
    Mostly cloudy with a chance of showers. Lows near 50.
  • Forecast day icon
    Thursday
    Chance of Rain Showers
    61°
    Forecast night icon
    Night
    Chance of Rain Showers
    44°
    Thursday 5/16
    Day
    61°
    Chance of Rain Showers
    Forecast day icon
    Night
    44°
    Chance of Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Partly sunny with a slight chance of showers. Highs in the mid 60s to lower 70s.
    Night Details
    Mostly cloudy with a slight chance of showers. Lows near 50.
  • Forecast day icon
    Friday
    Chance of Rain Showers
    62°
    Forecast night icon
    Night
    Clear
    45°
    Friday 5/17
    Day
    62°
    Chance of Rain Showers
    Forecast day icon
    Night
    45°
    Clear
    Forecast night icon
    Day Details
    Partly sunny with a slight chance of showers. Highs in the mid to upper 60s.
    Night Details
    Clear. Low temperature around 45F. Dew point will be around 44F with an average humidity of 79%. Winds will be 5 mph from the SW.
  • Forecast day icon
    Saturday
    30% Chance of Rain
    67°
    Forecast night icon
    Night
    30% Chance of Rain
    47°
    Saturday 5/18
    Day
    67°
    30% Chance of Rain
    Forecast day icon
    Night
    47°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Sunny with a slight chance of rain. Chance of precipitation 30%. High temperature around 67F. Dew point will be around 47F with an average humidity of 59%. Winds will be 6 mph from the SW.
    Night Details
    Clear 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 4 mph from the SW.
  • Forecast day icon
    Sunday
    40% Chance of Rain
    68°
    Forecast night icon
    Night
    40% Chance of Rain
    47°
    Sunday 5/19
    Day
    68°
    40% Chance of Rain
    Forecast day icon
    Night
    47°
    40% Chance of Rain
    Forecast night icon
    Day Details
    Sunny with a chance of rain. Chance of precipitation 40%. High temperature around 68F. Dew point will be around 47F with an average humidity of 58%. Winds will be 5 mph from the SW.
    Night Details
    Mostly clear with a chance of rain. Chance of precipitation 40%. Low temperature around 47F. Dew point will be around 45F with an average humidity of 73%. Winds will be 5 mph from the S.
  • Forecast day icon
    Monday
    50% Chance of Rain
    66°
    Forecast night icon
    Night
    30% Chance of Rain
    47°
    Monday 5/20
    Day
    66°
    50% Chance of Rain
    Forecast day icon
    Night
    47°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Sunny with a chance of rain. Chance of precipitation 45%. High temperature around 66F. Dew point will be around 47F with an average humidity of 63%. Winds will be 7 mph from the SW.
    Night Details
    Clear with a slight chance of rain. Chance of precipitation 30%. Low temperature around 47F. Dew point will be around 45F with an average humidity of 77%. Winds will be 6 mph from the S.