Mercersburg, Pennsylvania Weather
No Watches or Warnings for Mercersburg
Issued: 1:01 pm EST Dec 16, 2025 Latitude: 39.8278698 Longitude: -77.9033315 View on Google Maps
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Current Conditions at
HAGERSTOWN - (KHGR)
34°
Clear
as of 12:53 PM EST
Rel. Humidity: 43%
Dew Point: 14°F
Visibility: 10 Miles
Pressure: 30.17 in.
Flight Rule: VFR
Cloud Level(s): Clear
Current Conditions at
MARTINSBURG - (KMRB)
34°
Clear
as of 12:53 PM EST
Rel. Humidity: 47%
Dew Point: 16°F
Visibility: 10 Miles
Pressure: 30.17 in.
Flight Rule: VFR
Cloud Level(s): Clear
Current Conditions at
ALTOONA - (KAOO)
28°
Clear
as of 12:53 PM EST
Rel. Humidity: 46%
Dew Point: 10°F
Visibility: 10 Miles
Pressure: 30.09 in.
Flight Rule: VFR
Cloud Level(s): Clear
Current Conditions at
FREDERICK MUNICIPAL AIR - (KFDK)
28°
Clear
as of 12:47 PM EST
Rel. Humidity: 54%
Dew Point: 14°F
Visibility: 10 Miles
Pressure: 30.23 in.
Flight Rule: VFR
Cloud Level(s): Clear
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This Afternoon... Mostly sunny, with a high near 35. Light south wind. |
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Tonight... Partly cloudy, with a low around 22. Light and variable wind. |
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Wednesday... Cloudy, then gradually becoming mostly sunny, with a high near 48. South wind 5 to 10 mph becoming west in the afternoon. Winds could gust as high as 22 mph. |
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Wednesday Night... Partly cloudy, with a low around 25. Calm wind. |
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Thursday... A slight chance of showers after 1pm. Partly sunny, with a high near 49. Light southeast wind increasing to 8 to 13 mph in the morning. Winds could gust as high as 21 mph. Chance of precipitation is 20%. |
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Thursday Night... Showers. Low around 39. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible. |
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Friday... A chance of showers before 1pm. Partly sunny, with a high near 46. Breezy. Chance of precipitation is 30%. |
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Friday Night... Partly cloudy, with a low around 25. |
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Saturday... Partly sunny, with a high near 42. |
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Saturday Night... Mostly cloudy, with a low around 32. |
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Sunday... Mostly sunny, with a high near 46. |
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Sunday Night... Partly cloudy, with a low around 26. |
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Monday... Partly sunny, with a high near 40. |
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Current Radar Image
Sun Almanac for Mercersburg, Pennsylvania
Sunrise: 07:27 AM
Sunset: 4:48 PM
Civil Sunrise:06:56 AM
Civil Sunset: 5:19 PM
Nautical Sunrise: 06:22 AM
Nautical Sunset: 5:53 PM
Astro Sunrise: 05:49 AM
Astro Sunset: 6:25 PM
Pennsylvania's Current Temperatures
Pennsylvania's Satellite Image
Pennsylvania's Current Wind Direction
| National Summary |
of upper and lower values of current conditions amongst 7096 locations
in the contiguous United States |
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High
Temp |
77° |
Palm Springs, California
and 2 other locations
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Low
Temp |
14° |
Solon Springs, Wisconsin
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Wind
Speed |
45mph |
Alpha, Wyoming
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Wind
Gust |
53mph |
Alpha, Wyoming
and 1 other location
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Wind
Chill |
5° |
Frenchville, Maine
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High
Pressure |
30.46Hg |
Salida Mountain, Colorado
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Low
Pressure |
29.11Hg |
Flag Island, Minnesota
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| # Locations Reporting Snow |
1 |
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| # Locations Reporting Rain |
20 |
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| # Locations Reporting Thunderstorms / Lightning |
1 |
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| # Locations Reporting Fog |
8 |
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| Average Temperature in the Contiguous USA |
46° |
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National Weather Service for official information.
