10-Day Weather Forecast - Mattawa, WA

Partly cloudy in the morning then clearing. Highs in the upper 80s to lower 90s. West wind 5 to 15 mph. Gusts up to 30 mph in the afternoon.

Mostly clear. Lows in the 50s. Breezy. West wind 10 to 20 mph with gusts up to 30 mph.

Sunny. Highs in the mid 80s to lower 90s. Southwest wind 5 to 15 mph with gusts up to 20 mph.

Clear. Lows in the mid to upper 50s. West wind 5 to 15 mph with gusts up to 25 mph.

Clear. Highs in the mid 80s to lower 90s. Lows in the 50s.

Clear. Highs in the mid 80s to lower 90s. Lows in the 50s.

Clear. Highs in the mid 80s to lower 90s. Lows in the 50s.

Mostly clear. Lows in the mid 50s to lower 60s. Highs in the mid 80s to mid 90s.

Mostly clear. Lows in the mid 50s to lower 60s. Highs in the mid 80s to mid 90s.

Mostly clear. Lows in the mid 50s to lower 60s. Highs in the mid 80s to mid 90s.

Mostly clear. Lows in the mid 50s to lower 60s. Highs in the mid 80s to mid 90s.

Mostly clear. Lows in the mid 50s to lower 60s. Highs in the mid 80s to mid 90s.

Mostly clear. Lows in the mid 50s to lower 60s. Highs in the mid 80s to mid 90s.

Clear. Low temperature around 72F. Dew point will be around 44F with an average humidity of 29%. Winds will be 6 mph from the NW.

Sunny. High temperature around 101F. Dew point will be around 42F with an average humidity of 19%. Winds will be 4 mph from the NW.

Clear. Low temperature around 71F. Dew point will be around 47F with an average humidity of 33%. Winds will be 6 mph from the NW.

Sunny. High temperature around 99F. Dew point will be around 45F with an average humidity of 23%. Winds will be 3 mph from the NW.

Clear. Low temperature around 71F. Dew point will be around 47F with an average humidity of 33%. Winds will be 7 mph from the NW.