Mount Washington, Pennsylvania Weather
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Weather Forecast for Mount Washington, Pennsylvania : Allegheny County
Issued: 7:03 pm EDT Sep 4, 2025 Latitude: 40.4309025 Longitude: -80.0103312 View on Google Maps

MouseOver for Detail Forecast
Tonight Friday Saturday Sunday Monday Tuesday Wednesday Thursday
30% chance of rain on Tonight Mostly Cloudy on Friday 80% chance of rain on Saturday Mostly Sunny on Sunday Morning Fog on Monday Sunny on Tuesday Sunny on Wednesday Sunny on Thursday
Low: 57°F High: 83°F High: 67°F High: 69°F High: 71°F High: 76°F High: 79°F High: 79°F
Low: 58°F Low: 50°F Low: 47°F Low: 47°F Low: 50°F Low: 54°F  
Rain Mostly Cloudy Rain Mostly Sunny Morning Fog Sunny Sunny Sunny
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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
PITTSBURGH - (KPIT)
64°
Mostly Cloudy
as of 6:51 PM EDST
Rel. Humidity: 82%
Dew Point: 59°F
Visibility: 10 Miles
Pressure: 29.77 in.
Flight Rule: VFR
Wind Data
3 MPH
230° Southwest
Cloud Level(s): Scattered at 4600ft, Broken at 7500ft, Broken at 25000ft
Current Conditions at
BUTLER COUNTY - (KBTP)
63°
Cloudy
as of 6:56 PM EDST
Rel. Humidity: 100%
Dew Point: 63°F
Visibility: 10 Miles
Pressure: 29.80 in.
Flight Rule: VFR
Wind Data
3 MPH
080° East
Cloud Level(s): Few at 4300ft, Solid Overcast at 6000ft
30% chance of rain Tonight Tonight... A chance of showers before 8pm. Patchy fog between 4am and 5am. Otherwise, mostly cloudy, with a low around 57. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Mostly Cloudy on Friday Friday... Mostly cloudy, then gradually becoming sunny, with a high near 83. Southwest wind 6 to 14 mph, with gusts as high as 24 mph.
80% chance of thunderstorms Friday Night Friday Night... Showers and thunderstorms likely, then showers after 2am. Low around 58. Southwest wind 3 to 8 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
80% chance of rain Saturday Saturday... Showers, mainly before 2pm. High near 67. Calm wind becoming west 5 to 7 mph in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
30% chance of rain Saturday Night Saturday Night... A chance of showers before 8pm. Patchy fog after 1am. Otherwise, partly cloudy, with a low around 50. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 69.
Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 47.
Morning Fog on Monday Monday... Areas of fog before 9am. Otherwise, sunny, with a high near 71.
Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 47.
Sunny on Tuesday Tuesday... Sunny, with a high near 76.
Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 50.
Sunny on Wednesday Wednesday... Sunny, with a high near 79.
Mostly Clear on Wednesday Night Wednesday Night... Mostly clear, with a low around 54.
Sunny on Thursday Thursday... Sunny, with a high near 79.
Sun Almanac for Mount Washington, Pennsylvania
Sunrise: 06:51 AM
Sunset: 7:47 PM
Civil Sunrise:06:23 AM
Civil Sunset: 8:15 PM
Nautical Sunrise: 05:50 AM
Nautical Sunset: 8:48 PM
Astro Sunrise: 05:16 AM
Astro Sunset: 9:22 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.