10-Day Weather Forecast - Mattawa, WA

Sunny. Highs in the upper 60s to lower 70s. East wind 5 to 10 mph in the morning becoming light and variable.

Mostly clear. Lows in the mid to upper 40s. Northeast wind 5 to 10 mph.

Sunny. Highs in the 70s. East wind 5 to 10 mph.

Partly cloudy. Lows in the mid to upper 40s. Highs in the mid to upper 70s.

Partly cloudy. Lows in the mid to upper 40s. Highs in the mid to upper 70s.

Mostly cloudy. Lows in the upper 40s to lower 50s. Highs in the mid to upper 70s.

Mostly cloudy. Lows in the upper 40s to lower 50s. Highs in the mid to upper 70s.

Mostly cloudy. Lows in the upper 40s to lower 50s. Highs in the mid to upper 70s.

Mostly clear. Highs in the upper 70s to mid 80s. Lows in the upper 40s to mid 50s.

Mostly clear. Highs in the upper 70s to mid 80s. Lows in the upper 40s to mid 50s.

Mostly clear. Highs in the upper 70s to mid 80s. Lows in the upper 40s to mid 50s.

Clear. Low temperature around 59F. Dew point will be around 38F with an average humidity of 35%. Winds will be 6 mph from the W.

Sunny. High temperature around 89F. Dew point will be around 37F with an average humidity of 24%. Winds will be 3 mph from the W.

Clear. Low temperature around 56F. Dew point will be around 40F with an average humidity of 42%. Winds will be 8 mph from the W.

Sunny. High temperature around 85F. Dew point will be around 38F with an average humidity of 28%. Winds will be 4 mph from the W.

Clear. Low temperature around 55F. Dew point will be around 39F with an average humidity of 42%. Winds will be 7 mph from the W.

Mostly sunny. High temperature around 82F. Dew point will be around 38F with an average humidity of 29%. Winds will be 2 mph from the W.

Partly cloudy. Low temperature around 54F. Dew point will be around 38F with an average humidity of 41%. Winds will be 5 mph from the NW.