Mount Washington, Pennsylvania Weather
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Weather Forecast for Mount Washington, Pennsylvania : Fayette County
Issued: 7:03 pm EDT Sep 4, 2025 Latitude: 39.8145204 Longitude: -79.5800421 View on Google Maps

MouseOver for Detail Forecast
Tonight Friday Saturday Sunday Monday Tuesday Wednesday Thursday
60% chance of rain on Tonight Clearing on Friday 70% chance of thunderstorms on Saturday Morning Fog on Sunday Morning Fog on Monday Morning Fog on Tuesday Patchy Fog on Wednesday Sunny on Thursday
Low: 56°F High: 79°F High: 66°F High: 66°F High: 67°F High: 73°F High: 76°F High: 76°F
Low: 56°F Low: 46°F Low: 42°F Low: 42°F Low: 45°F Low: 48°F  
Rain Clearing Thunderstorms Morning Fog Morning Fog Morning Fog Patchy Fog Sunny
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Current Conditions at
MORGANTOWN - (KMGW)
70°
Partly Cloudy
as of 6:53 PM EDST
Rel. Humidity: 64%
Dew Point: 57°F
Visibility: 10 Miles
Pressure: 29.81 in.
Flight Rule: VFR
Wind Data
7 MPH
Gust: 20 MPH
210° Southwest
Cloud Level(s): Scattered at 5500ft
Current Conditions at
ALLEGHENY COUNTY ARPT - (KAGC)
63°
Cloudy
as of 6:53 PM EDST
Rel. Humidity: 88%
Dew Point: 59°F
Visibility: 9 Miles
Pressure: 29.78 in.
Flight Rule: VFR
Wind Data
3 MPH
240° Southwest
Cloud Level(s): Few at 3800ft, Solid Overcast at 5500ft
Current Conditions at
JOHNSTOWN - (KJST)
57°
Cloudy
Heavy Rain Mist
as of 7:40 PM EDST
Rel. Humidity: 93%
Dew Point: 55°F
Visibility: 1 3/4 Miles
Pressure: 29.84 in.
Flight Rule: IFR
Wind Data
9 MPH
270° West
Cloud Level(s): Broken at 600ft, Broken at 1300ft, Solid Overcast at 2200ft
60% chance of rain Tonight Tonight... Showers likely, mainly before 1am. Patchy fog after midnight. Otherwise, cloudy, with a low around 56. Southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

Clearing on Friday Friday... Cloudy through mid morning, then gradual clearing, with a high near 79. Southwest wind 6 to 10 mph, with gusts as high as 23 mph.

70% chance of thunderstorms Friday Night Friday Night... Showers and thunderstorms likely before 2am, then showers likely and possibly a thunderstorm between 2am and 5am, then showers likely after 5am. Patchy fog after 2am. Otherwise, increasing clouds, with a low around 56. Light south wind. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

70% chance of thunderstorms Saturday Saturday... Showers likely before 8am, then showers likely and possibly a thunderstorm between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Patchy fog before 9am. Otherwise, cloudy, with a high near 66. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

30% chance of thunderstorms Saturday Night Saturday Night... A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Patchy fog. Otherwise, mostly cloudy, with a low around 46. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Morning Fog on Sunday Sunday... Areas of fog before 9am. Otherwise, mostly sunny, with a high near 66.

Patchy Fog on Sunday Night Sunday Night... Patchy fog after midnight. Otherwise, mostly clear, with a low around 42.

Morning Fog on Monday Monday... Areas of fog before 9am. Otherwise, sunny, with a high near 67.

Morning Fog on Monday Night Monday Night... Patchy fog after 2am. Otherwise, mostly clear, with a low around 42.

Morning Fog on Tuesday Tuesday... Patchy fog before 9am. Otherwise, sunny, with a high near 73.

Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 45.

Patchy Fog on Wednesday Wednesday... Patchy fog. Otherwise, sunny, with a high near 76.

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

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

Current Radar Image


Sun Almanac for Mount Washington, Pennsylvania
Sunrise: 06:50 AM
Sunset: 7:45 PM
Civil Sunrise:06:22 AM
Civil Sunset: 8:12 PM
Nautical Sunrise: 05:49 AM
Nautical Sunset: 8:45 PM
Astro Sunrise: 05:16 AM
Astro Sunset: 9:19 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.