Charlestown, Pennsylvania Weather
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Click for Hazardous Weather Outlook for Charlestown, Pennsylvania
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Weather Forecast for Charlestown, Pennsylvania : Franklin County
Issued: 1:05 pm EDT Sep 4, 2025 Latitude: 39.8600911 Longitude: -77.9344437 View on Google Maps

MouseOver for Detail Forecast
Tonight Friday Saturday Sunday Monday Tuesday Wednesday Thursday
40% chance of thunderstorms on Tonight Morning Fog on Friday 80% chance of thunderstorms on Saturday Mostly Sunny on Sunday Sunny on Monday Sunny on Tuesday Sunny on Wednesday Sunny on Thursday
Low: 59°F High: 86°F High: 81°F High: 74°F High: 73°F High: 75°F High: 77°F High: 79°F
Low: 64°F Low: 54°F Low: 48°F Low: 48°F Low: 49°F Low: 52°F  
Thunderstorms Morning Fog Thunderstorms Mostly Sunny Sunny Sunny Sunny Sunny
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Current Conditions at
HAGERSTOWN - (KHGR)
75°
Cloudy
as of 6:53 PM EDST
Rel. Humidity: 69%
Dew Point: 64°F
Visibility: 10 Miles
Pressure: 29.76 in.
Flight Rule: VFR
Wind Data
5 MPH
180° South
Cloud Level(s): Broken at 5000ft, Broken at 7000ft, Solid Overcast at 8000ft
Current Conditions at
MARTINSBURG - (KMRB)
75°
Mostly Cloudy
as of 6:53 PM EDST
Rel. Humidity: 69%
Dew Point: 64°F
Visibility: 10 Miles
Pressure: 29.75 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Scattered at 4700ft, Broken at 6500ft
Current Conditions at
ALTOONA - (KAOO)
70°
Mostly Cloudy
as of 6:53 PM EDST
Rel. Humidity: 64%
Dew Point: 57°F
Visibility: 10 Miles
Pressure: 29.79 in.
Flight Rule: VFR
Wind Data
7 MPH
230° Southwest
Cloud Level(s): Broken at 6500ft
40% chance of thunderstorms Tonight Tonight... A chance of showers and thunderstorms before 9pm. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 59. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Morning Fog on Friday Friday... Patchy fog before 9am. Otherwise, mostly sunny, with a high near 86. Calm wind becoming southwest 5 to 8 mph in the afternoon.
20% chance of rain Friday Night Friday Night... A slight chance of showers after 2am. Increasing clouds, with a low around 64. Light southwest wind. Chance of precipitation is 20%.
80% chance of thunderstorms Saturday Saturday... A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 81. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
80% chance of thunderstorms Saturday Night Saturday Night... Showers and possibly a thunderstorm before 8pm, then a chance of showers. Low around 54. Northwest wind 3 to 5 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 74.
Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 48.
Sunny on Monday Monday... Sunny, with a high near 73.
Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 48.
Sunny on Tuesday Tuesday... Sunny, with a high near 75.
Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 49.
Sunny on Wednesday Wednesday... Sunny, with a high near 77.
Mostly Clear on Wednesday Night Wednesday Night... Mostly clear, with a low around 52.
Sunny on Thursday Thursday... Sunny, with a high near 79.
Sun Almanac for Charlestown, Pennsylvania
Sunrise: 06:43 AM
Sunset: 7:38 PM
Civil Sunrise:06:16 AM
Civil Sunset: 8:06 PM
Nautical Sunrise: 05:43 AM
Nautical Sunset: 8:38 PM
Astro Sunrise: 05:09 AM
Astro Sunset: 9:12 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.