National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Pittsburgh - Allegheny County Airport (KAGC)

Lat: 40.36°NLon: 79.92°WElev: 1237ft.

Fair

65°F

18°C

Humidity 34%
Wind Speed S 10 mph
Barometer 30.32 in (1027.3 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 9 Apr 11:53 am EDT
Extended Forecast for

Castle Shannon PA

  • This Afternoon

    This Afternoon: Sunny, with a high near 72. Southwest wind around 13 mph.

    High: 72 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 52. Southwest wind around 8 mph.

    Low: 52 °F

    Mostly Clear

  • Friday

    Friday: Increasing clouds, with a high near 75. Southwest wind 9 to 16 mph, with gusts as high as 26 mph.

    High: 75 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Showers likely, mainly between 8pm and 2am. Cloudy, then gradually becoming partly cloudy, with a low around 42. North wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 42 °F

    Showers
    Likely

  • Saturday

    Saturday: Sunny, with a high near 62. North wind around 7 mph.

    High: 62 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 79.

    High: 79 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 62.

    Low: 62 °F

    Mostly Cloudy

  • Monday

    Monday: A chance of showers. Mostly cloudy, with a high near 76. Chance of precipitation is 40%.

    High: 76 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Sunny, with a high near 72. Southwest wind around 13 mph.
Tonight
Mostly clear, with a low around 52. Southwest wind around 8 mph.
Friday
Increasing clouds, with a high near 75. Southwest wind 9 to 16 mph, with gusts as high as 26 mph.
Friday Night
Showers likely, mainly between 8pm and 2am. Cloudy, then gradually becoming partly cloudy, with a low around 42. North wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Sunny, with a high near 62. North wind around 7 mph.
Saturday Night
Mostly clear, with a low around 42.
Sunday
Partly sunny, with a high near 79.
Sunday Night
Mostly cloudy, with a low around 62.
Monday
A chance of showers. Mostly cloudy, with a high near 76. Chance of precipitation is 40%.
Monday Night
A chance of showers after 2am. Mostly cloudy, with a low around 62. Chance of precipitation is 40%.
Tuesday
A chance of showers. Partly sunny, with a high near 82. Chance of precipitation is 30%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 64. Chance of precipitation is 40%.
Wednesday
A chance of showers. Partly sunny, with a high near 83. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Castle Shannon PA
 40.37°N 80.02°W (Elev. 1109 ft)
Last Update:
12:21 pm EDT Apr 9, 2026
Forecast Valid:
12pm EDT Apr 9, 2026-6pm EDT Apr 15, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation