Sumas, Washington | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast night icon
    Night
    Clear
    39°
    Thursday 4/18
    Forecast night icon
    39°
    Clear
    Hourly
    Night Details
    Clear. Lows in the upper 30s to mid 40s. North wind around 10 mph becoming northeast after midnight.
  • Forecast day icon
    Friday
    Sunny
    65°
    Forecast night icon
    Night
    Clear
    40°
    Friday 4/19
    Day
    65°
    Sunny
    Forecast day icon
    Night
    40°
    Clear
    Forecast night icon
    Hourly
    Day Details
    Sunny. Highs in the upper 50s to mid 60s. Northeast wind 10 to 15 mph.
    Night Details
    Clear. Lows in the upper 30s to mid 40s. Northeast wind to 10 mph becoming east after midnight.
  • Forecast day icon
    Saturday
    Partly Sunny
    62°
    Forecast night icon
    Night
    Rain
    40°
    Saturday 4/20
    Day
    62°
    Partly Sunny
    Forecast day icon
    Night
    40°
    Rain
    Forecast night icon
    Hourly
    Day Details
    Sunny in the morning then becoming partly sunny. Highs in the 60s. Northeast wind 10 to 15 mph becoming east in the afternoon.
    Night Details
    Breezy. Showers likely in the evening then showers after midnight. Rainfall amounts a half inch to one inch possible. Lows in the 40s. South wind 15 to 25 mph. Gusts to 35 mph.
  • Forecast day icon
    Sunday
    Chance of Rain Showers
    52°
    Forecast night icon
    Night
    Chance of Rain Showers
    37°
    Sunday 4/21
    Day
    52°
    Chance of Rain Showers
    Forecast day icon
    Night
    37°
    Chance of Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy with showers likely in the morning then mostly cloudy with a chance of showers in the afternoon. Highs in the lower to mid 50s.
    Night Details
    Mostly cloudy. A slight chance of showers in the evening. Lows in the lower 40s.
  • Forecast day icon
    Monday
    Mostly Sunny
    59°
    Forecast night icon
    Night
    Partly Cloudy
    39°
    Monday 4/22
    Day
    59°
    Mostly Sunny
    Forecast day icon
    Night
    39°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. Highs near 60.
    Night Details
    Partly cloudy. Lows in the lower to mid 40s.
  • Forecast day icon
    Tuesday
    Chance of Rain Showers
    63°
    Forecast night icon
    Night
    Chance of Rain Showers
    43°
    Tuesday 4/23
    Day
    63°
    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 60s.
    Night Details
    Partly cloudy in the evening then becoming mostly cloudy. A slight chance of showers. Lows in the mid 40s.
  • Forecast day icon
    Wednesday
    Chance of Rain Showers
    54°
    Forecast night icon
    Night
    Chance of Rain Showers
    42°
    Wednesday 4/24
    Day
    54°
    Chance of Rain Showers
    Forecast day icon
    Night
    42°
    Chance of Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Partly sunny with a chance of showers. Highs near 60.
    Night Details
    Mostly cloudy. A slight chance of showers in the evening then a chance of showers after midnight. Lows in the mid to upper 40s.
  • Forecast day icon
    Thursday
    Chance of Rain Showers
    56°
    Forecast night icon
    Night
    30% Chance of Rain
    42°
    Thursday 4/25
    Day
    56°
    Chance of Rain Showers
    Forecast day icon
    Night
    42°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Mostly cloudy with a chance of showers. Highs in the upper 50s.
    Night Details
    Mostly cloudy with a slight chance of rain. Chance of precipitation 25%. Low temperature around 42F. Dew point will be around 43F with an average humidity of 88%. Winds will be 5 mph from the SE.
  • Forecast day icon
    Friday
    30% Chance of Rain
    57°
    Forecast night icon
    Night
    30% Chance of Rain
    41°
    Friday 4/26
    Day
    57°
    30% Chance of Rain
    Forecast day icon
    Night
    41°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Cloudy with a slight chance of rain. Chance of precipitation 25%. High temperature around 57F. Dew point will be around 46F with an average humidity of 77%. 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 41F. Dew point will be around 43F with an average humidity of 86%. Winds will be 5 mph from the SE.
  • Forecast day icon
    Saturday
    40% Chance of Rain
    56°
    Forecast night icon
    Night
    40% Chance of Rain
    42°
    Saturday 4/27
    Day
    56°
    40% Chance of Rain
    Forecast day icon
    Night
    42°
    40% Chance of Rain
    Forecast night icon
    Day Details
    Mostly cloudy with a chance of rain. Chance of precipitation 40%. High temperature around 56F. Dew point will be around 45F with an average humidity of 78%. Winds will be 4 mph from the SW.
    Night Details
    Partly cloudy with a chance of rain. Chance of precipitation 40%. Low temperature around 42F. Dew point will be around 43F with an average humidity of 84%. Winds will be 6 mph from the S.