Current conditions at

Pittsburgh - Allegheny County Airport (KAGC)

Lat: 40.36°NLon: 79.92°WElev: 1237ft.

Overcast

26°F

-3°C

Humidity 88%
Wind Speed SW 12 mph
Barometer 29.72 in (1008.7 mb)
Dewpoint 23°F (-5°C)
Visibility 7.00 mi
Wind Chill15°F (-9°C)
Last update 31 Dec 2:53 pm EST
Extended Forecast for

Castle Shannon PA

Winter Weather Advisory December 31, 03:52pm until January 1, 10:00am
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory December 31, 03:52pm until January 1, 10:00am

    NOW until 10:00am Thu

    Winter Weather Advisory

  • This Afternoon

    High: 31 °F

    Snow Likely

  • Tonight

    Tonight: Snow, mainly before 2am.  Low around 15. West wind 14 to 18 mph, with gusts as high as 30 mph.  Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    Low: 15 °F

    Snow

  • New Year's Day

    New Year's Day: Mostly sunny, with a high near 22. West wind 10 to 13 mph.

    High: 22 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 16. Southwest wind around 7 mph.

    Low: 16 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 30. West wind 7 to 10 mph.

    High: 30 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 14.

    Low: 14 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 30.

    High: 30 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 17.

    Low: 17 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Snow likely, mainly after 4pm. Cloudy, with a high near 31. Southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. Total daytime snow accumulation of less than one inch possible.
Tonight
Snow, mainly before 2am. Low around 15. West wind 14 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
New Year's Day
Mostly sunny, with a high near 22. West wind 10 to 13 mph.
Thursday Night
Mostly cloudy, with a low around 16. Southwest wind around 7 mph.
Friday
Partly sunny, with a high near 30. West wind 7 to 10 mph.
Friday Night
Partly cloudy, with a low around 14.
Saturday
Mostly cloudy, with a high near 30.
Saturday Night
Mostly cloudy, with a low around 17.
Sunday
Partly sunny, with a high near 30.
Sunday Night
Mostly cloudy, with a low around 16.
Monday
Mostly cloudy, with a high near 37.
Monday Night
Mostly cloudy, with a low around 28.
Tuesday
Mostly cloudy, with a high near 42.
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ABOUT THIS FORECAST

 
Point Forecast:
Castle Shannon PA
 40.37°N 80.02°W (Elev. 1109 ft)
3:42 pm EST Dec 31, 2025
3pm EST Dec 31, 2025-6pm EST Jan 6, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database