10-Day Weather Forecast - Union, WA

Partly sunny. Patchy fog. Highs in the mid to upper 50s. Light wind.

Mostly cloudy in the evening then becoming partly cloudy. Patchy dense fog. Lows in the lower to mid 40s. Light wind.

Partly sunny. Patchy fog in the morning. Highs in the upper 40s to mid 50s. Light wind.

Mostly cloudy. Lows in the upper 30s to mid 40s. Light wind.

Mostly sunny. Highs in the lower 50s.

Mostly clear. Lows in the upper 30s.

Sunny. Highs in the lower to mid 50s.

Mostly clear. Lows in the upper 30s.

Sunny. Highs in the lower to mid 50s.

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

Sunny. Highs in the lower 50s.

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

Mostly sunny. Highs near 50.

Mostly clear. Low temperature around 36F. Dew point will be around 37F with an average humidity of 97%. Winds will be 1 mph from the S.

Partly cloudy. High temperature around 43F. Dew point will be around 38F with an average humidity of 92%. Winds will be 1 mph from the SE.

Cloudy with a slight chance of rain. Chance of precipitation 25%. Low temperature around 36F. Dew point will be around 38F with an average humidity of 99%. Winds will be 1 mph from the S.

Cloudy with a slight chance of rain. Chance of precipitation 30%. High temperature around 43F. Dew point will be around 38F with an average humidity of 93%. Winds will be 2 mph from the S.

Cloudy with a slight chance of rain. Chance of precipitation 30%. Low temperature around 34F. Dew point will be around 36F with an average humidity of 98%. Winds will be 2 mph from the S.