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 with Haze

15°F

-9°C

Humidity 74%
Wind Speed W 14 G 24 mph
Barometer 29.64 in (1005.8 mb)
Dewpoint 8°F (-13°C)
Visibility 6.00 mi
Wind Chill0°F (-18°C)
Last update 15 Jan 8:53 am EST
Extended Forecast for

Castle Shannon PA

  • Today

    Today: Snow showers, mainly before 3pm. High near 22. Breezy, with a west wind 17 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. Total daytime snow accumulation of less than one inch possible.

    High: 22 °F

    Snow Showers
    and Breezy

  • Tonight

    Tonight: Partly cloudy, with a low around 16. West wind 9 to 15 mph, with gusts as high as 25 mph.

    Low: 16 °F

    Partly Cloudy

  • Friday

    Friday: A chance of snow, mainly after 1pm. Increasing clouds, with a high near 35. South wind 9 to 14 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

    High: 35 °F

    Chance Snow

  • Friday Night

    Friday Night: A chance of snow. Mostly cloudy, with a low around 30. Southwest wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    Low: 30 °F

    Chance Snow

  • Saturday

    Saturday: Snow. High near 38. Southwest wind 8 to 13 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

    High: 38 °F

    Snow

  • Saturday Night

    Saturday Night: A chance of snow, mainly before 1am. Mostly cloudy, with a low around 16. Chance of precipitation is 40%.

    Low: 16 °F

    Chance Snow

  • Sunday

    Sunday: Partly sunny, with a high near 22.

    High: 22 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 14.

    Low: 14 °F

    Mostly Cloudy

  • M.L.King Day

    M.L.King Day: A chance of snow after 1pm. Mostly cloudy, with a high near 24. Breezy. Chance of precipitation is 30%.

    High: 24 °F

    Mostly Cloudy
    then Chance
    Snow and
    Breezy

Detailed Forecast

Today
Snow showers, mainly before 3pm. High near 22. Breezy, with a west wind 17 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. Total daytime snow accumulation of less than one inch possible.
Tonight
Partly cloudy, with a low around 16. West wind 9 to 15 mph, with gusts as high as 25 mph.
Friday
A chance of snow, mainly after 1pm. Increasing clouds, with a high near 35. South wind 9 to 14 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Friday Night
A chance of snow. Mostly cloudy, with a low around 30. Southwest wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Saturday
Snow. High near 38. Southwest wind 8 to 13 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Saturday Night
A chance of snow, mainly before 1am. Mostly cloudy, with a low around 16. Chance of precipitation is 40%.
Sunday
Partly sunny, with a high near 22.
Sunday Night
Mostly cloudy, with a low around 14.
M.L.King Day
A chance of snow after 1pm. Mostly cloudy, with a high near 24. Breezy. Chance of precipitation is 30%.
Monday Night
Partly cloudy, with a low around 7.
Tuesday
Mostly sunny, with a high near 16.
Tuesday Night
Partly cloudy, with a low around 8.
Wednesday
Partly sunny, with a high near 26.
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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:
5:56 am EST Jan 15, 2026
Forecast Valid:
9am EST Jan 15, 2026-6pm EST Jan 21, 2026
 
Forecast Discussion
 
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Additional Resources

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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