10-Day Weather Forecast - Mercersburg, PA

Sunny blustery and much colder with highs around 15. Northwest winds 15 to 25 mph with gusts up to 50 mph. Wind chill values as low as 19 below.

Mostly clear in the evening then becoming partly cloudy. Cold with lows around 5 above. Northwest winds 15 to 20 mph. Gusts up to 40 mph decreasing to 30 mph after midnight. Wind chill values as low as 10 below.

Mostly sunny. Highs in the lower 20s. Northwest winds 5 to 10 mph with gusts up to 25 mph. Wind chill values as low as 10 below in the morning.

Mostly clear in the evening then becoming mostly cloudy. Cold with lows around 5 above. Northwest winds around 5 mph.

Partly sunny in the morning then becoming mostly cloudy. Highs in the upper 20s.

Mostly cloudy. Not as cool with lows around 20.

Mostly cloudy in the morning then becoming mostly sunny. Not as cool with highs in the lower 40s.

Mostly cloudy. Not as cool with lows in the upper 20s.

A chance of freezing rain in the morning. Cloudy with a chance of rain. Highs in the lower 40s. Chance of precipitation 50 percent.

Mostly cloudy. A chance of rain snow and freezing rain in the evening. Lows in the upper 20s. Chance of precipitation 50 percent.

Mostly cloudy in the morning then becoming partly sunny. Highs in the mid 30s.

Mostly cloudy. Lows in the lower 20s.

Mostly sunny in the morning then becoming mostly cloudy. Highs in the mid 30s.

Mostly clear. Low temperature around 26F. Dew point will be around 21F with an average humidity of 71%. Winds will be 1 mph from the NW.

Mostly sunny. High temperature around 36F. Dew point will be around 23F with an average humidity of 69%. Winds will be 2 mph from the E.

Cloudy with a slight chance of rain-snow mix. Chance of precipitation 25%. Low temperature around 29F. Dew point will be around 25F with an average humidity of 78%. Winds will be 2 mph from the E.

Cloudy. High temperature around 37F. Dew point will be around 28F with an average humidity of 77%. Winds will be 1 mph from the SE.

Cloudy. Low temperature around 29F. Dew point will be around 25F with an average humidity of 77%. Winds will be 2 mph from the W.