10-Day Weather Forecast - Mercersburg, PA

Mostly cloudy. A chance of showers with a slight chance of thunderstorms in the morning then showers likely with a chance of thunderstorms in the afternoon. Highs in the lower 80s. Southeast winds around 5 mph becoming southwest around 5 mph in the afternoon. Chance of rain 70 percent.

Mostly cloudy. Showers with a chance of thunderstorms in the evening then a chance of showers after midnight. Patchy fog after midnight. Humid with lows in the lower 60s. Southwest winds around 5 mph becoming northwest after midnight. Chance of rain 90 percent.

Mostly sunny. Highs in the upper 70s. Northwest winds 5 to 10 mph with gusts up to 20 mph.

Mostly clear. Lows in the upper 50s. Northwest winds 5 to 10 mph.

Sunny. Highs in the lower 80s.

Mostly clear. Lows in the lower 60s.

Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 50 percent.

Showers likely with a chance of thunderstorms. Lows in the mid 60s. Chance of rain 60 percent.

Partly sunny with a chance of showers. A chance of thunderstorms in the afternoon. Humid with highs in the mid 80s. Chance of rain 50 percent.

Mostly cloudy. A chance of showers and thunderstorms in the evening. Lows in the lower 60s. Chance of rain 50 percent.

Partly sunny with a chance of showers. Highs in the mid 80s. Chance of rain 30 percent.

Partly cloudy. A chance of showers in the evening. Lows in the mid 60s. Chance of rain 30 percent.

Mostly sunny. Very warm with highs in the upper 80s.

Partly cloudy. Low temperature around 70F. Dew point will be around 67F with an average humidity of 76%. Winds will be 2 mph from the S.

Mostly sunny. High temperature around 91F. Dew point will be around 71F with an average humidity of 67%. Winds will be 3 mph from the SW.

Clear with a chance of rain. Chance of precipitation 35%. Low temperature around 73F. Dew point will be around 70F with an average humidity of 76%. Winds will be 1 mph from the SW.

Sunny. High temperature around 92F. Dew point will be around 72F with an average humidity of 67%. Winds will be 3 mph from the SW.

Clear with a slight chance of rain. Chance of precipitation 25%. Low temperature around 74F. Dew point will be around 70F with an average humidity of 72%. Winds will be 2 mph from the SW.