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      Elev 633 ft, 39.821 °N 77.904 °W

      Mercersburg, PA

      Summary

      Temperature (°F)MaxAverageMin
      Max Temperature8880.8677
      Avg Temperature78.3372.1867.83
      Min Temperature7564.7158
      Precipitation (in)MaxAverageMinSum
      Precipitation0.02000.02
      Dew Point (°F)MaxAverageMin
      Dew Point67.8861.5754.92
      Wind (mph)MaxAverageMin
      Wind1710.297
      Gust Wind2318.7517
      Sea Level Pressure (in)MaxAverageMin
      Sea Level Pressure29.4829.3329.21

      Daily Observations

      DateTemp High/LowDew Pt High/LowHumidityWindMax WindWind GustPressurePrecip.Condition
      9/6/2026 78 °F / 60 °F 61 °F / 54 °F 68 % 13 mph - 29.25 in 0 in
      9/7/2026 77 °F / 58 °F 57 °F / 51 °F 67 % 8 mph - 29.41 in 0 in
      9/8/2026 82 °F / 58 °F 64 °F / 52 °F 67 % 8 mph - 29.49 in 0 in
      9/9/2026 88 °F / 65 °F 67 °F / 61 °F 67 % 17 mph - 29.37 in 0 in
      9/10/2026 84 °F / 75 °F 70 °F / 66 °F 71 % 9 mph - 29.2 in 0 in
      9/11/2026 80 °F / 68 °F 70 °F / 60 °F 78 % 7 mph - 29.26 in 0.02 in
      9/12/2026 77 °F / 67 °F 65 °F / 62 °F 81 % 10 mph - 29.31 in 0 in
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