Mercersburg, Pennsylvania | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast day icon
    Thursday
    Sunny
    86°
    Forecast night icon
    Night
    Partly Cloudy
    55°
    Thursday 5/2
    Day
    86°
    Sunny
    Forecast day icon
    Night
    55°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Sunny. High temperature around 86F. Dew point will be around 54F with an average humidity of 58%. Winds will be 2 mph from the W.
    Night Details
    Clear this evening then becoming partly cloudy. Lows in the mid 50s. North winds 5 to 10 mph becoming northeast after midnight.
  • Forecast day icon
    Friday
    Mostly Sunny
    74°
    Forecast night icon
    Night
    80% Chance of Storms
    52°
    Friday 5/3
    Day
    74°
    Mostly Sunny
    Forecast day icon
    Night
    52°
    80% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. Highs in the upper 70s. East winds 5 to 10 mph.
    Night Details
    Mostly cloudy. Thunderstorms likely in the evening then showers and thunderstorms after midnight. Some thunderstorms may produce heavy rainfall. Lows in the lower 50s. Southeast winds 5 to 10 mph. Chance of rain 80 percent.
  • Forecast day icon
    Saturday
    70% Chance of Storms
    59°
    Forecast night icon
    Night
    Rain
    53°
    Saturday 5/4
    Day
    59°
    70% Chance of Storms
    Forecast day icon
    Night
    53°
    Rain
    Forecast night icon
    Hourly
    Day Details
    Thunderstorms likely in the morning. Showers likely. Some thunderstorms may produce heavy rainfall in the morning. Much cooler with highs in the upper 50s. Southeast winds 5 to 10 mph. Chance of rain 70 percent.
    Night Details
    Showers. Lows in the lower 50s. Southeast winds 10 to 15 mph. Chance of rain near 100 percent.
  • Forecast day icon
    Sunday
    Rain
    67°
    Forecast night icon
    Night
    50% Chance Rain Showers
    58°
    Sunday 5/5
    Day
    67°
    Rain
    Forecast day icon
    Night
    58°
    50% Chance Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Showers mainly in the morning. Highs in the upper 60s. Chance of rain near 100 percent.
    Night Details
    Mostly cloudy with a chance of showers. Patchy fog after midnight. Lows in the upper 50s. Chance of rain 50 percent.
  • Forecast day icon
    Monday
    50% Chance of Storms
    78°
    Forecast night icon
    Night
    50% Chance of Storms
    62°
    Monday 5/6
    Day
    78°
    50% Chance of Storms
    Forecast day icon
    Night
    62°
    50% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy in the morning then becoming partly sunny. Patchy fog in the morning. A chance of showers. A chance of thunderstorms in the afternoon. Highs in the mid 70s. Chance of rain 50 percent.
    Night Details
    Mostly cloudy with a chance of showers and thunderstorms. Patchy fog after midnight. Lows around 60. Chance of rain 50 percent.
  • Forecast day icon
    Tuesday
    50% Chance of Storms
    78°
    Forecast night icon
    Night
    50% Chance of Storms
    64°
    Tuesday 5/7
    Day
    78°
    50% Chance of Storms
    Forecast day icon
    Night
    64°
    50% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Patchy fog in the morning. Partly sunny with a chance of showers. A chance of thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 50 percent.
    Night Details
    Mostly cloudy with a chance of showers and thunderstorms. Lows in the lower 60s. Chance of rain 50 percent.
  • Forecast day icon
    Wednesday
    50% Chance of Storms
    83°
    Forecast night icon
    Night
    50% Chance of Storms
    64°
    Wednesday 5/8
    Day
    83°
    50% Chance of Storms
    Forecast day icon
    Night
    64°
    50% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Partly sunny with a chance of showers. A chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 50 percent.
    Night Details
    Partly cloudy in the evening then becoming mostly cloudy. A chance of showers and thunderstorms. Lows in the lower 60s. Chance of rain 50 percent.
  • Forecast day icon
    Thursday
    50% Chance of Storms
    86°
    Forecast night icon
    Night
    50% Chance of Rain
    64°
    Thursday 5/9
    Day
    86°
    50% Chance of Storms
    Forecast day icon
    Night
    64°
    50% Chance of Rain
    Forecast night icon
    Day Details
    Partly sunny with a chance of showers. A chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 50 percent.
    Night Details
    Partly cloudy with a chance of rain. Chance of precipitation 45%. Low temperature around 64F. Dew point will be around 61F with an average humidity of 76%. Winds will be 5 mph from the W.
  • Forecast day icon
    Friday
    50% Chance of Rain
    77°
    Forecast night icon
    Night
    30% Chance of Rain
    56°
    Friday 5/10
    Day
    77°
    50% Chance of Rain
    Forecast day icon
    Night
    56°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Partly cloudy with a chance of rain. Chance of precipitation 50%. High temperature around 77F. Dew point will be around 59F with an average humidity of 65%. Winds will be 6 mph from the W.
    Night Details
    Mostly clear with a slight chance of rain. Chance of precipitation 30%. Low temperature around 56F. Dew point will be around 54F with an average humidity of 74%. Winds will be 6 mph from the NW.
  • Forecast day icon
    Saturday
    40% Chance of Rain
    68°
    Forecast night icon
    Night
    40% Chance of Rain
    52°
    Saturday 5/11
    Day
    68°
    40% Chance of Rain
    Forecast day icon
    Night
    52°
    40% Chance of Rain
    Forecast night icon
    Day Details
    Mostly cloudy with a chance of rain. Chance of precipitation 35%. High temperature around 68F. Dew point will be around 50F with an average humidity of 62%. Winds will be 6 mph from the NW.
    Night Details
    Partly cloudy with a chance of rain. Chance of precipitation 35%. Low temperature around 52F. Dew point will be around 49F with an average humidity of 73%. Winds will be 4 mph from the NW.