10-Day Weather Forecast - Williamstown, PA

Partly sunny. A slight chance of showers in the morning, then a chance of showers and thunderstorms in the afternoon. Humid with highs in the mid 80s. Northwest winds 5 to 10 mph. Chance of rain 50 percent.

Mostly cloudy. Showers likely with a chance of thunderstorms in the evening. Humid with lows in the lower 60s. Northwest winds 5 to 10 mph. Chance of rain 60 percent.

Mostly sunny. Highs in the upper 70s. North winds 5 to 10 mph.

Mostly clear. Lows in the mid 50s. North winds around 5 mph.

Mostly sunny. Highs in the upper 70s.

Mostly clear. Lows in the mid 50s.

Sunny. Highs in the upper 70s.

Mostly clear. Lows in the mid 50s.

Mostly sunny. Highs around 80.

Partly cloudy. Lows in the upper 50s.

Mostly sunny. Highs in the lower 80s.

Mostly cloudy. A chance of showers after midnight. Lows in the mid 60s. Chance of rain 40 percent.

Partly sunny. A chance of showers in the morning. Humid with highs in the mid 80s. Chance of rain 40 percent.

Partly cloudy with a 45% chance for rain and thunderstorms. Low temperature around 64F. Dew point will be around 65F with an average humidity of 87%. Winds will be 3 mph from the W.

Mostly sunny. High temperature around 77F. Dew point will be around 64F with an average humidity of 78%. Winds will be 4 mph from the NW.

Mostly clear. Low temperature around 60F. Dew point will be around 60F with an average humidity of 87%. Winds will be 2 mph from the NW.

Mostly sunny. High temperature around 76F. Dew point will be around 61F with an average humidity of 76%. Winds will be 1 mph from the N.

Mostly clear. Low temperature around 60F. Dew point will be around 59F with an average humidity of 87%. Winds will be 1 mph from the SE.