Sumas, Washington | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast night icon
    Night
    Partly Cloudy
    46°
    Monday 5/13
    Forecast night icon
    46°
    Partly Cloudy
    Hourly
    Night Details
    Partly cloudy in the late evening and early morning then becoming mostly cloudy. Lows in the 40s to lower 50s. Light wind becoming south to 10 mph after midnight.
  • Forecast day icon
    Tuesday
    Partly Sunny
    67°
    Forecast night icon
    Night
    Partly Cloudy
    45°
    Tuesday 5/14
    Day
    67°
    Partly Sunny
    Forecast day icon
    Night
    45°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Partly sunny. Highs in the 60s. South wind to 10 mph becoming west around 10 mph in the afternoon.
    Night Details
    Partly cloudy. Lows in the mid 40s to lower 50s. Southwest wind to 10 mph in the evening becoming light.
  • Forecast day icon
    Wednesday
    Mostly Sunny
    69°
    Forecast night icon
    Night
    Mostly Clear
    49°
    Wednesday 5/15
    Day
    69°
    Mostly Sunny
    Forecast day icon
    Night
    49°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. Highs in the 60s to lower 70s. Light wind becoming southwest around 10 mph in the afternoon.
    Night Details
    Mostly clear. Lows near 50. Southwest wind around 10 mph becoming south after midnight.
  • Forecast day icon
    Thursday
    Chance of Rain Showers
    65°
    Forecast night icon
    Night
    Chance of Rain Showers
    45°
    Thursday 5/16
    Day
    65°
    Chance of Rain Showers
    Forecast day icon
    Night
    45°
    Chance of Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Partly sunny. A slight chance of showers in the afternoon. Highs in the mid to upper 60s.
    Night Details
    Partly cloudy with a slight chance of showers. Lows near 50.
  • Forecast day icon
    Friday
    Chance of Rain Showers
    60°
    Forecast night icon
    Night
    Mostly Clear
    41°
    Friday 5/17
    Day
    60°
    Chance of Rain Showers
    Forecast day icon
    Night
    41°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Partly sunny with a slight chance of showers. Highs in the lower 60s.
    Night Details
    Mostly clear. Lows in the mid to upper 40s.
  • Forecast day icon
    Saturday
    Mostly Sunny
    65°
    Forecast night icon
    Night
    Partly Cloudy
    44°
    Saturday 5/18
    Day
    65°
    Mostly Sunny
    Forecast day icon
    Night
    44°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. Highs in the mid 60s.
    Night Details
    Partly cloudy. Lows in the mid to upper 40s.
  • Forecast day icon
    Sunday
    Chance of Rain Showers
    64°
    Forecast night icon
    Night
    Chance of Rain Showers
    43°
    Sunday 5/19
    Day
    64°
    Chance of Rain Showers
    Forecast day icon
    Night
    43°
    Chance of Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. A slight chance of showers in the afternoon. Highs in the mid to upper 60s.
    Night Details
    Partly cloudy with a slight chance of showers in the evening then mostly cloudy with a chance of showers after midnight. Lows in the upper 40s.
  • Forecast day icon
    Monday
    Chance of Rain Showers
    63°
    Forecast night icon
    Night
    Cloudy
    44°
    Monday 5/20
    Day
    63°
    Chance of Rain Showers
    Forecast day icon
    Night
    44°
    Cloudy
    Forecast night icon
    Day Details
    Partly sunny with a chance of showers. Highs in the lower 60s.
    Night Details
    Cloudy. Low temperature around 44F. Dew point will be around 43F with an average humidity of 80%. Winds will be 6 mph from the S.
  • Forecast day icon
    Tuesday
    30% Chance of Rain
    62°
    Forecast night icon
    Night
    30% Chance of Rain
    44°
    Tuesday 5/21
    Day
    62°
    30% Chance of Rain
    Forecast day icon
    Night
    44°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Cloudy with a slight chance of rain. Chance of precipitation 30%. High temperature around 62F. Dew point will be around 45F with an average humidity of 68%. Winds will be 7 mph from the SW.
    Night Details
    Cloudy with a slight chance of rain. Chance of precipitation 25%. Low temperature around 44F. Dew point will be around 43F with an average humidity of 83%. Winds will be 5 mph from the S.
  • Forecast day icon
    Wednesday
    40% Chance of Rain
    63°
    Forecast night icon
    Night
    30% Chance of Rain
    44°
    Wednesday 5/22
    Day
    63°
    40% Chance of Rain
    Forecast day icon
    Night
    44°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Cloudy with a chance of rain. Chance of precipitation 35%. High temperature around 63F. Dew point will be around 46F with an average humidity of 67%. Winds will be 6 mph from the SW.
    Night Details
    Partly cloudy with a slight chance of rain. Chance of precipitation 25%. Low temperature around 44F. Dew point will be around 44F with an average humidity of 83%. Winds will be 4 mph from the SW.