10-Day Weather Forecast - Sumas, WA

Sunny. Highs in the upper 70s to mid 80s. Light wind.

Partly cloudy. Lows in the lower to mid 50s. Light wind becoming southeast to 10 mph after midnight.

Mostly sunny. Highs in the 70s. Southwest wind to 10 mph. Gusts to 20 mph in the morning.

Mostly cloudy. A slight chance of rain after midnight. Lows in the lower to mid 50s. West wind around 10 mph in the evening becoming light.

Mostly cloudy with a chance of rain in the morning then mostly cloudy with rain likely in the afternoon. Highs near 70.

Partly cloudy. A slight chance of rain in the evening. Lows near 50.

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

Mostly clear. Lows near 50.

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

Partly cloudy in the evening then becoming mostly cloudy. A slight chance of rain. Lows in the lower 50s.

Partly sunny. A slight chance of rain in the morning. Highs near 70.

Partly cloudy. Lows near 50.

Mostly sunny. A slight chance of rain in the afternoon. Highs in the lower to mid 70s.

Clear. Low temperature around 53F. Dew point will be around 52F with an average humidity of 79%. Winds will be 2 mph from the W.

Mostly sunny. High temperature around 77F. Dew point will be around 52F with an average humidity of 55%. Winds will be 4 mph from the W.

Clear. Low temperature around 54F. Dew point will be around 52F with an average humidity of 77%. Winds will be 2 mph from the W.

Sunny. High temperature around 80F. Dew point will be around 54F with an average humidity of 54%. Winds will be 4 mph from the W.

Clear. Low temperature around 56F. Dew point will be around 54F with an average humidity of 76%. Winds will be 2 mph from the W.