Mount Union, Pennsylvania Weather
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Weather Forecast for Mount Union, Pennsylvania : Franklin County
Issued: 1:05 pm EDT Sep 4, 2025 Latitude: 39.9053697 Longitude: -77.5030434 View on Google Maps

MouseOver for Detail Forecast
Tonight Friday Saturday Sunday Monday Tuesday Wednesday Thursday
20% 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: 58°F High: 83°F High: 80°F High: 72°F High: 71°F High: 73°F High: 74°F High: 76°F
Low: 64°F Low: 53°F Low: 47°F Low: 46°F Low: 48°F Low: 50°F  
Thunderstorms Morning Fog Thunderstorms Mostly Sunny Sunny Sunny Sunny Sunny
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Current Conditions at
HAGERSTOWN - (KHGR)
72°
Cloudy
as of 8:53 PM EDST
Rel. Humidity: 83%
Dew Point: 66°F
Visibility: 10 Miles
Pressure: 29.80 in.
Flight Rule: VFR
Wind Data
5 MPH
170° South
Cloud Level(s): Broken at 4800ft, Broken at 6500ft, Solid Overcast at 9500ft
Current Conditions at
COLLEGE PARK ARPT - (KCGS)
73°
Partly Cloudy
as of 9:15 PM EDST
Rel. Humidity: 78%
Dew Point: 66°F
Visibility: 10 Miles
Pressure: 29.82 in.
Flight Rule: VFR
Wind Data
6 MPH
180° South
Cloud Level(s): Scattered at 4800ft
Current Conditions at
YORK - (KTHV)
66°
Mostly Cloudy
Thunderstorm In Vicinity
as of 9:11 PM EDST
Rel. Humidity: 100%
Dew Point: 66°F
Visibility: 10 Miles
Pressure: 29.81 in.
Flight Rule: MVFR
Wind Data
3 MPH
250° West
Cloud Level(s): Broken at 1800ft, Broken at 4100ft
Current Conditions at
CARROLL CNTY ARPT - (KDMW)
70°
Clear
as of 9:15 PM EDST
Rel. Humidity: 94%
Dew Point: 68°F
Visibility: 10 Miles
Pressure: 29.81 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
20% chance of thunderstorms Tonight Tonight... A slight chance of showers and thunderstorms before 10pm. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 58. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

Morning Fog on Friday Friday... Patchy fog before 9am. Otherwise, mostly sunny, with a high near 83. Calm wind becoming southwest 5 to 8 mph in the morning.

Increasing Clouds on Friday Night Friday Night... Increasing clouds, with a low around 64. South wind 3 to 5 mph.

80% chance of thunderstorms Saturday Saturday... A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 80. 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 53. 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 72.

Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 47.

Sunny on Monday Monday... Sunny, with a high near 71.

Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 46.

Sunny on Tuesday Tuesday... Sunny, with a high near 73.

Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 48.

Sunny on Wednesday Wednesday... Sunny, with a high near 74.

Mostly Clear on Wednesday Night Wednesday Night... Mostly clear, with a low around 50.

Sunny on Thursday Thursday... Sunny, with a high near 76.

Current Radar Image


Sun Almanac for Mount Union, Pennsylvania
Sunrise: 06:41 AM
Sunset: 7:37 PM
Civil Sunrise:06:14 AM
Civil Sunset: 8:04 PM
Nautical Sunrise: 05:41 AM
Nautical Sunset: 8:37 PM
Astro Sunrise: 05:07 AM
Astro Sunset: 9:11 PM
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