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      Elev 633 ft, 39.821 °N 77.904 °W

      Mercersburg, PA

      Sun, Oct 18, 2026
      Today
      Sun 10/18
      High 61°f
      0% Precip. / 0 in
      Sunny. High 61F. Winds light and variable.
      Tonight
      Sun 10/18
      Low 36°f
      2% Precip. / 0 in
      A clear sky. Low 36F. Winds light and variable.
      Sunrise 7:25 AM
      Sunset 6:27 PM
      Moonrise 2:44 PM
      Moonset -
      First Quarter, 51% visible
      Hourly Forecast
      Now
      49°
      11AM
      51°
      12PM
      54°
      1PM
      56°
      2PM
      58°
      3PM
      59°
      4PM
      60°
      5PM
      59°
      6PM
      56°
      6:27PM
      Sunset
      7PM
      53°
      8PM
      50°
      9PM
      48°
      10PM
      46°
      11PM
      44°
      12AM
      43°
      1AM
      41°
      2AM
      40°
      3AM
      39°
      4AM
      39°
      5AM
      38°
      6AM
      37°
      7AM
      37°
      7:26AM
      Sunrise
      8AM
      38°
      9AM
      43°
      10AM
      49°
      Time Conditions Temp. Feels Like Precip Amount Cloud Cover Dew Point Humidity Wind Pressure
      11:00 am
      Sunny
      51°F 51°F 0% 0in 0% 30°F 44% 2 mph NNE 30.62in
      12:00 pm
      Sunny
      54°F 54°F 0% 0in 0% 29°F 38% 2 mph NE 30.6in
      1:00 pm
      Sunny
      56°F 56°F 0% 0in 0% 28°F 34% 2 mph NE 30.58in
      2:00 pm
      Sunny
      58°F 58°F 0% 0in 0% 27°F 30% 3 mph ENE 30.56in
      3:00 pm
      Sunny
      59°F 59°F 0% 0in 0% 27°F 29% 2 mph NE 30.54in
      4:00 pm
      Sunny
      60°F 60°F 0% 0in 0% 27°F 29% 2 mph NNE 30.53in
      5:00 pm
      Sunny
      59°F 59°F 0% 0in 0% 29°F 31% 2 mph ENE 30.52in
      6:00 pm
      Sunny
      56°F 56°F 0% 0in 0% 35°F 46% 2 mph E 30.52in
      7:00 pm
      Clear
      53°F 53°F 1% 0in 0% 33°F 48% 2 mph ENE 30.52in
      8:00 pm
      Clear
      50°F 50°F 1% 0in 0% 33°F 53% 1 mph E 30.53in
      9:00 pm
      Clear
      48°F 48°F 1% 0in 0% 34°F 59% 0 mph NE 30.53in
      10:00 pm
      Clear
      46°F 46°F 1% 0in 0% 34°F 64% 1 mph N 30.53in
      11:00 pm
      Clear
      44°F 44°F 1% 0in 0% 34°F 68% 1 mph NNW 30.53in
      Additional Conditions
      1. Pressure 30.62 in
      2. Visibility 10 miles
      3. Clouds Clear
      4. Dew Point30°F
      5. Humidity 49%
      6. Rainfall 0 in
      7. Snow Depth 0 in
      KHGR Station History
      Almanac for October 18, 2026
      1. Forecast Average Record
      2. Temperature
      3. High 61°F 65°F 81°F 1980
      4. Low 32°F 38°F 20°F 1982
      5. Rain/Snow Depth
      6. Precipitation 0 in 0.11 in -
      7. Snow 0 in - in -
      Almanac for October 19, 2026
      1. Forecast Average Record
      2. Temperature
      3. High 68°F 65°F 81°F
      4. Low 36°F 38°F 20°F
      Astronomy
      1. Sun Rise Set
      2. Actual Time 7:25 AM 6:27 PM
      3. Civil Twilight 6:57 AM 6:55 PM
      4. Nautical Twilight 6:26 AM 7:26PM
      5. Astronomical Twilight 5:55 AM 7:57 PM
      1. Length of Visible Light 11h 57m
      2. Length of Day 11h 2m
      3. Tomorrow will be 2 minutes 30 seconds shorter
      1. Moon 2:44 PM -
      2. First Quarter51% of the Moon is Illuminated
      Oct 18
      Waxing Half First Qtr
      Oct 26
      Full Moon
      Nov 1
      Waning Half Last Qtr
      Nov 9
      New Moon
      Nearby Weather Stations
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      Windchill
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      Humidity
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      Precip.
      Elev.
      Updated
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      Level Access
      Glossary