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.

Fair

39°F

4°C

Humidity 38%
Wind Speed N 8 G 17 mph
Barometer 30.41 in (1031.3 mb)
Dewpoint 15°F (-9°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 7 Apr 1:53 pm EDT
Extended Forecast for

Castle Shannon PA

  • This Afternoon

    This Afternoon: Sunny, with a high near 43. North wind around 11 mph.

    High: 43 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 27. North wind around 6 mph.

    Low: 27 °F

    Clear

  • Wednesday

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

    High: 60 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 39. Southeast wind around 10 mph.

    Low: 39 °F

    Mostly Clear

  • 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 48.

    Low: 48 °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 after 8pm. Mostly cloudy, with a low around 46. Chance of precipitation is 40%.

    Low: 46 °F

    Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 43. North wind around 11 mph.
Tonight
Clear, with a low around 27. North wind around 6 mph.
Wednesday
Sunny, with a high near 60. Southeast wind 6 to 9 mph.
Wednesday Night
Mostly clear, with a low around 39. Southeast wind around 10 mph.
Thursday
Sunny, with a high near 70. South wind 8 to 11 mph.
Thursday Night
Mostly clear, with a low around 48.
Friday
Mostly sunny, with a high near 73.
Friday Night
A chance of showers after 8pm. Mostly cloudy, with a low around 46. Chance of precipitation is 40%.
Saturday
Mostly sunny, with a high near 64.
Saturday Night
Mostly clear, with a low around 45.
Sunday
Mostly sunny, with a high near 78.
Sunday Night
Mostly cloudy, with a low around 61.
Monday
Mostly cloudy, 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:
2:21 pm EDT Apr 7, 2026
Forecast Valid:
2pm EDT Apr 7, 2026-6pm EDT Apr 13, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation