10-Day Weather Forecast - Mercersburg, PA

Sunny colder with highs in the lower 20s. West winds 10 to 15 mph with gusts up to 25 mph. Wind chill values as low as 5 below in the morning.

Mostly clear. Lows around 10 above. Southwest winds around 5 mph.

Partly sunny. Not as cool with highs in the mid 30s. South winds 10 to 15 mph with gusts up to 25 mph. Wind chill values as low as 4 above in the morning.

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

Mostly sunny. Highs in the lower 40s.

Partly cloudy. Lows around 20.

Partly sunny. Cooler with highs in the lower 30s.

Mostly cloudy. Colder with lows 5 to 10 above. Wind chill values as low as 5 below after midnight.

Mostly cloudy. A chance of snow showers in the afternoon. Much colder with highs 15 to 20. Chance of snow 30 percent. Wind chill values as low as 5 below.

Mostly cloudy with a 40 percent chance of snow showers. Lows 5 to 10 above.

Partly sunny with a 40 percent chance of snow showers. Highs around 20.

Clear. Low temperature around 9F. Dew point will be around 2F with an average humidity of 65%. Winds will be 4 mph from the NW.

Sunny. High temperature around 23F. Dew point will be around 6F with an average humidity of 60%. Winds will be 7 mph from the NW.

Clear. Low temperature around 11F. Dew point will be around 6F with an average humidity of 69%. Winds will be 4 mph from the NW.

Sunny. High temperature around 24F. Dew point will be around 8F with an average humidity of 63%. Winds will be 6 mph from the NW.

Clear. Low temperature around 13F. Dew point will be around 9F with an average humidity of 73%. Winds will be 3 mph from the NW.

Mostly cloudy. High temperature around 24F. Dew point will be around 11F with an average humidity of 68%. Winds will be 4 mph from the NW.

Partly cloudy. Low temperature around 13F. Dew point will be around 10F with an average humidity of 74%. Winds will be 4 mph from the NW.