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

21°F

-6°C

Humidity 68%
Wind Speed SW 5 mph
Barometer 30.19 in (1024.5 mb)
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Wind Chill14°F (-10°C)
Last update 13 Feb 3:53 am EST
Extended Forecast for

Castle Shannon PA

  • Today

    Today: Mostly sunny, with a high near 35. West wind 3 to 7 mph.

    High: 35 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 27. Southwest wind 6 to 9 mph.

    Low: 27 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly sunny, with a high near 45. West wind around 7 mph.

    High: 45 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 30. Light and variable wind.

    Low: 30 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of rain, mainly after 1pm. Mostly cloudy, with a high near 47. Southeast wind 3 to 6 mph. Chance of precipitation is 30%.

    High: 47 °F

    Chance Rain

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 31.

    Low: 31 °F

    Partly Cloudy

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 50.

    High: 50 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 54.

    High: 54 °F

    Partly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 35. West wind 3 to 7 mph.
Tonight
Increasing clouds, with a low around 27. Southwest wind 6 to 9 mph.
Saturday
Mostly sunny, with a high near 45. West wind around 7 mph.
Saturday Night
Mostly cloudy, with a low around 30. Light and variable wind.
Sunday
A chance of rain, mainly after 1pm. Mostly cloudy, with a high near 47. Southeast wind 3 to 6 mph. Chance of precipitation is 30%.
Sunday Night
Partly cloudy, with a low around 31.
Washington's Birthday
Mostly sunny, with a high near 50.
Monday Night
Partly cloudy, with a low around 32.
Tuesday
Partly sunny, with a high near 54.
Tuesday Night
Mostly cloudy, with a low around 41.
Wednesday
A chance of rain. Mostly cloudy, with a high near 58. Chance of precipitation is 50%.
Wednesday Night
Rain likely. Mostly cloudy, with a low around 42. Chance of precipitation is 60%.
Thursday
A chance of rain. Mostly cloudy, with a high near 53. Chance of precipitation is 50%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Castle Shannon PA
 40.35°N 80.03°W (Elev. 1198 ft)
Last Update:
12:52 am EST Feb 13, 2026
Forecast Valid:
4am EST Feb 13, 2026-6pm EST Feb 19, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation