10-Day Weather Forecast - Saint Helens, OR

Partly sunny. A slight chance of rain in the morning. Highs in the mid 50s. Winds light. Chance of rain 20 percent.

Partly cloudy in the evening then becoming mostly cloudy. Lows around 40. Light and variable winds.

Patchy fog in the morning. Mostly sunny. Highs in the mid 50s. Light and variable winds.

Partly cloudy. Patchy dense fog. Lows in the upper 30s. Light and variable winds.

Partly sunny. Patchy fog. Highs in the mid 50s.

Partly cloudy in the evening then becoming mostly cloudy. Lows around 40.

Mostly sunny. Highs in the mid 50s.

Mostly clear in the evening then becoming partly cloudy. Lows in the mid 30s.

Sunny. Highs in the mid 50s.

Mostly clear. Lows in the mid 30s.

Sunny. Highs in the mid 50s.

Mostly clear in the evening then becoming partly cloudy. Lows in the mid 30s.

Mostly sunny. Highs in the mid 50s.

Clear. Low temperature around 32F. Dew point will be around 32F with an average humidity of 89%. Winds will be 1 mph from the N.

Mostly sunny. High temperature around 46F. Dew point will be around 34F with an average humidity of 78%. Winds will be 1 mph from the N.

Clear. Low temperature around 33F. Dew point will be around 33F with an average humidity of 87%. Winds will be 1 mph from the NW.

Partly cloudy. High temperature around 43F. Dew point will be around 35F with an average humidity of 84%. Winds will be 0 mph from the NW.

Cloudy with a slight chance of rain. Chance of precipitation 30%. Low temperature around 35F. Dew point will be around 34F with an average humidity of 91%. Winds will be 0 mph from the W.