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

Pittsburgh - Allegheny County Airport (KAGC)

Lat: 40.36°NLon: 79.92°WElev: 1237ft.

A Few Clouds

31°F

-1°C

Humidity 49%
Wind Speed NW 10 G 21 mph
Barometer 30.37 in (1029.8 mb)
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 7 Apr 9:53 am EDT
Extended Forecast for

Castle Shannon PA

  • Today

    Today: Mostly sunny, with a high near 43. Northwest wind 11 to 14 mph.

    High: 43 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 26. North wind around 6 mph becoming east after midnight.

    Low: 26 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 60. Southeast wind 6 to 9 mph.

    High: 60 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 38. South wind around 9 mph.

    Low: 38 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 70. South wind 8 to 11 mph.

    High: 70 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A chance of showers before 2am. Mostly cloudy, with a low around 49. Chance of precipitation is 30%.

    Low: 49 °F

    Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 43. Northwest wind 11 to 14 mph.
Tonight
Mostly clear, with a low around 26. North wind around 6 mph becoming east after midnight.
Wednesday
Sunny, with a high near 60. Southeast wind 6 to 9 mph.
Wednesday Night
Partly cloudy, with a low around 38. South wind around 9 mph.
Thursday
Sunny, with a high near 70. South wind 8 to 11 mph.
Thursday Night
Mostly clear, with a low around 46.
Friday
Mostly sunny, with a high near 73.
Friday Night
A chance of showers before 2am. Mostly cloudy, with a low around 49. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 67.
Saturday Night
Partly cloudy, with a low around 48.
Sunday
Partly sunny, with a high near 80.
Sunday Night
Mostly cloudy, with a low around 61.
Monday
Partly sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Castle Shannon PA
 40.37°N 80.02°W (Elev. 1109 ft)
Last Update:
6:31 am EDT Apr 7, 2026
Forecast Valid:
10am EDT Apr 7, 2026-6pm EDT Apr 13, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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