10-Day Weather Forecast - Saint Helens, WA

Areas of frost in the morning. Mostly sunny. Highs around 60. Winds light.

Mostly clear. Lows in the upper 30s. Winds light.

Sunny. Highs around 70. Winds light.

Partly cloudy in the evening then becoming mostly cloudy. Lows in the upper 40s. Northeast wind 5 to 10 mph.

Partly sunny. Highs in the mid 70s.

Mostly cloudy in the evening then becoming partly cloudy. Lows in the upper 40s.

Mostly sunny. Highs in the lower 70s.

Partly cloudy in the evening then clearing. Lows in the lower 40s.

Mostly sunny. Highs around 60.

Partly cloudy. Lows in the upper 30s.

Mostly sunny with a 20 percent chance of rain. Highs in the upper 50s.

Partly cloudy in the evening then clearing. A 20 percent chance of rain. Lows in the upper 30s.

Mostly sunny with a 20 percent chance of rain. Highs in the lower 60s.

Clear. Low temperature around 38F. Dew point will be around 40F with an average humidity of 86%. Winds will be 2 mph from the W.

Mostly cloudy. High temperature around 55F. Dew point will be around 42F with an average humidity of 76%. Winds will be 3 mph from the SW.

Partly cloudy. Low temperature around 40F. Dew point will be around 41F with an average humidity of 87%. Winds will be 2 mph from the S.

Cloudy with a slight chance of rain. Chance of precipitation 30%. High temperature around 54F. Dew point will be around 43F with an average humidity of 81%. Winds will be 3 mph from the W.

Partly cloudy. Low temperature around 38F. Dew point will be around 40F with an average humidity of 88%. Winds will be 2 mph from the W.