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.

Overcast

31°F

-1°C

Humidity 52%
Wind Speed S 12 mph
Barometer 29.61 in (1004.6 mb)
Dewpoint 15°F (-9°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 24 Feb 11:53 pm EST
Extended Forecast for

Castle Shannon PA

  • Overnight

    Overnight: Snow, mainly after 1am. Low around 30. Southwest wind 14 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of around an inch possible.

    Low: 30 °F

    Snow

  • Wednesday

    Wednesday: A chance of rain and snow before 11am, then a slight chance of rain between 11am and noon. Partly sunny, with a high near 45. Southwest wind 15 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

    High: 45 °F

    Chance
    Rain/Snow
    then Partly
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 24. West wind 5 to 10 mph.

    Low: 24 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of snow. Partly sunny, with a high near 41. West wind 3 to 6 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    High: 41 °F

    Chance Snow

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 26. North wind around 5 mph becoming light and variable after midnight.

    Low: 26 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 50.

    High: 50 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 33.

    Low: 33 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 55.

    High: 55 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 30.

    Low: 30 °F

    Partly Cloudy

Detailed Forecast

Overnight
Snow, mainly after 1am. Low around 30. Southwest wind 14 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of around an inch possible.
Wednesday
A chance of rain and snow before 11am, then a slight chance of rain between 11am and noon. Partly sunny, with a high near 45. Southwest wind 15 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.
Wednesday Night
Partly cloudy, with a low around 24. West wind 5 to 10 mph.
Thursday
A chance of snow. Partly sunny, with a high near 41. West wind 3 to 6 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Thursday Night
Partly cloudy, with a low around 26. North wind around 5 mph becoming light and variable after midnight.
Friday
Sunny, with a high near 50.
Friday Night
Mostly clear, with a low around 33.
Saturday
Sunny, with a high near 55.
Saturday Night
Partly cloudy, with a low around 30.
Sunday
Partly sunny, with a high near 39.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 23. Chance of precipitation is 40%.
Monday
A chance of rain and snow. Partly sunny, with a high near 40. Chance of precipitation is 40%.
Monday Night
A chance of rain. Mostly cloudy, with a low around 27. Chance of precipitation is 30%.
Tuesday
A chance of rain. Partly sunny, with a high near 46. Chance of precipitation is 40%.
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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:
7:07 pm EST Feb 24, 2026
Forecast Valid:
12am EST Feb 25, 2026-6pm EST Mar 3, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation