10-Day Weather Forecast - Sumas, WA

Mostly sunny. A slight chance of showers in the afternoon. Highs in the mid 70s to lower 80s. Light wind becoming west to 10 mph in the afternoon.

Partly cloudy. Lows in the mid to upper 50s. Light wind.

Sunny. Highs in the mid 70s to lower 80s. Light wind becoming west to 10 mph in the afternoon.

Mostly clear. Lows in the lower to mid 50s. West wind around 10 mph in the evening becoming light.

Mostly sunny. Highs in the 70s.

Partly cloudy. Lows in the lower 50s.

Partly sunny. A slight chance of showers in the afternoon. Highs in the lower to mid 70s.

Partly cloudy in the evening then becoming mostly cloudy. Lows in the lower to mid 50s.

Partly sunny. Highs in the lower to mid 70s.

Mostly cloudy. A slight chance of showers after midnight. Lows in the mid 50s.

Mostly cloudy with a slight chance of showers. Highs in the 70s.

Mostly cloudy. A slight chance of showers in the evening then a chance of showers after midnight. Lows in the mid to upper 50s.

Mostly cloudy with a chance of showers. Highs in the lower to mid 70s.

Partly cloudy with a chance of rain. Chance of precipitation 40%. Low temperature around 57F. Dew point will be around 58F with an average humidity of 92%. Winds will be 2 mph from the SW.

Mostly sunny with a chance of rain. Chance of precipitation 40%. High temperature around 76F. Dew point will be around 61F with an average humidity of 72%. Winds will be 4 mph from the W.

Clear. Low temperature around 58F. Dew point will be around 58F with an average humidity of 89%. Winds will be 2 mph from the W.

Sunny. High temperature around 79F. Dew point will be around 61F with an average humidity of 68%. Winds will be 5 mph from the W.

Clear. Low temperature around 58F. Dew point will be around 59F with an average humidity of 86%. Winds will be 2 mph from the W.