10-Day Weather Forecast - Grand Coulee, WA

Partly cloudy in the morning then clearing. Highs in the mid 80s to lower 90s. Southwest wind 5 to 15 mph with gusts up to 25 mph.

Clear. Lows in the mid 50s to lower 60s. West wind 5 to 15 mph with gusts up to 25 mph.

Sunny. Highs in the mid 80s to lower 90s. Southwest wind 5 to 15 mph with gusts up to 25 mph.

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

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

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

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

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

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

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

Sunny. Highs in the lower to mid 90s.

Clear. Low temperature around 71F. Dew point will be around 42F with an average humidity of 28%. Winds will be 4 mph from the SW.

Sunny. High temperature around 98F. Dew point will be around 46F with an average humidity of 24%. Winds will be 4 mph from the SW.

Clear. Low temperature around 69F. Dew point will be around 47F with an average humidity of 35%. Winds will be 3 mph from the SW.

Sunny. High temperature around 97F. Dew point will be around 47F with an average humidity of 26%. Winds will be 4 mph from the SW.

Clear. Low temperature around 69F. Dew point will be around 44F with an average humidity of 32%. Winds will be 4 mph from the SW.

Sunny. High temperature around 97F. Dew point will be around 46F with an average humidity of 24%. Winds will be 4 mph from the SW.

Clear. Low temperature around 69F. Dew point will be around 45F with an average humidity of 33%. Winds will be 3 mph from the SW.