10-Day Weather Forecast - Mattawa, WA

Patchy dense fog in the morning. Mostly cloudy. Highs around 40. Northeast wind 5 to 10 mph.

Mostly cloudy. Lows in the mid to upper 20s. Northeast wind 5 to 10 mph.

Mostly sunny. Highs in the upper 30s to lower 40s. Northeast wind 5 to 10 mph.

Mostly clear. Lows in the mid to upper 20s. Light wind.

Partly cloudy. Highs in the upper 30s to lower 40s. Lows in the mid to upper 20s.

Partly cloudy. Highs in the upper 30s to lower 40s. Lows in the mid to upper 20s.

Partly cloudy. Highs in the upper 30s to lower 40s. Lows in the mid to upper 20s.

Partly cloudy. Highs in the upper 30s to lower 40s. Lows in the mid to upper 20s.

Partly cloudy. Highs in the upper 30s to lower 40s. Lows in the mid to upper 20s.

Partly cloudy. Highs in the upper 30s to lower 40s. Lows in the mid to upper 20s.

Partly cloudy. Highs in the upper 30s to lower 40s. Lows in the mid to upper 20s.

Partly cloudy. Highs in the upper 30s to lower 40s. Lows in the mid to upper 20s.

Partly cloudy. Highs in the upper 30s to lower 40s. Lows in the mid to upper 20s.

Mostly cloudy. Low temperature around 35F. Dew point will be around 28F with an average humidity of 75%. Winds will be 4 mph from the SW.

Partly cloudy. High temperature around 36F. Dew point will be around 29F with an average humidity of 75%. Winds will be 4 mph from the SW.

Partly cloudy. Low temperature around 33F. Dew point will be around 26F with an average humidity of 71%. Winds will be 4 mph from the SW.

Partly cloudy. High temperature around 37F. Dew point will be around 27F with an average humidity of 71%. Winds will be 5 mph from the S.

Mostly cloudy. Low temperature around 35F. Dew point will be around 26F with an average humidity of 67%. Winds will be 6 mph from the SW.