10-Day Weather Forecast - SeaTac, WA

Sunny. Highs in the 60s to lower 70s. Light wind becoming north to 10 mph in the afternoon.

Mostly clear. Lows in the 40s. North wind to 10 mph in the evening becoming light.

Mostly sunny. Highs in the upper 60s to mid 70s. Light wind.

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

Partly sunny. Highs in the mid to upper 60s.

Mostly cloudy. Lows in the mid to upper 40s.

Mostly sunny. Highs in the lower 70s.

Mostly clear. Lows near 50.

Sunny. Highs in the upper 70s.

Mostly clear. Lows in the lower 50s.

Sunny. Highs near 80.

Clear. Low temperature around 55F. Dew point will be around 48F with an average humidity of 64%. Winds will be 6 mph from the SW.

Partly cloudy. High temperature around 70F. Dew point will be around 50F with an average humidity of 64%. Winds will be 6 mph from the W.

Clear. Low temperature around 51F. Dew point will be around 48F with an average humidity of 71%. Winds will be 5 mph from the SW.

Mostly cloudy. High temperature around 67F. Dew point will be around 47F with an average humidity of 65%. Winds will be 5 mph from the W.

Clear. Low temperature around 50F. Dew point will be around 47F with an average humidity of 71%. Winds will be 2 mph from the W.

Partly cloudy. High temperature around 69F. Dew point will be around 47F with an average humidity of 61%. Winds will be 4 mph from the NW.

Partly cloudy. Low temperature around 51F. Dew point will be around 46F with an average humidity of 68%. Winds will be 3 mph from the NW.