10-Day Weather Forecast - SeaTac, WA

Mostly cloudy. Areas of fog until late afternoon. Highs near 50. Light wind.

Mostly cloudy. Widespread dense fog late in the evening. Areas of fog after midnight then patchy fog in the morning. Lows in the upper 30s to mid 40s. Light wind.

Mostly cloudy in the morning then becoming mostly sunny. Areas of fog in the morning. Highs near 50. Northeast wind to 10 mph increasing to 10 to 15 mph in the afternoon.

Partly cloudy. Patchy fog after midnight. Lows in the mid 30s to lower 40s. Northeast wind to 10 mph.

Sunny. Patchy fog in the morning. Highs in the lower 50s.

Mostly clear. Lows in the mid to upper 30s.

Sunny. Highs in the lower 50s.

Mostly clear. Lows in the mid 30s.

Sunny. Highs near 50.

Mostly clear. Lows in the mid 30s.

Mostly sunny. Highs in the upper 40s.

Mostly cloudy. Lows in the mid to upper 30s.

Mostly cloudy. Highs in the upper 40s.

Cloudy. Low temperature around 39F. Dew point will be around 37F with an average humidity of 87%. Winds will be 3 mph from the E.

Cloudy with a slight chance of rain. Chance of precipitation 30%. High temperature around 42F. Dew point will be around 36F with an average humidity of 84%. Winds will be 3 mph from the NW.

Cloudy with a slight chance of rain. Chance of precipitation 30%. Low temperature around 36F. Dew point will be around 34F with an average humidity of 83%. Winds will be 3 mph from the NE.

Cloudy with a chance of rain. Chance of precipitation 35%. High temperature around 40F. Dew point will be around 32F with an average humidity of 77%. Winds will be 4 mph from the NW.

Cloudy with a slight chance of rain. Chance of precipitation 30%. Low temperature around 34F. Dew point will be around 29F with an average humidity of 78%. Winds will be 2 mph from the NE.