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

38°F

3°C

Humidity 60%
Wind Speed W 17 G 33 mph
Barometer 29.82 in (1010.3 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 20 Feb 10:53 pm EST
Extended Forecast for

Castle Shannon PA

  • Tonight

    Tonight: Mostly cloudy, with a low around 33. West wind 11 to 18 mph, with gusts as high as 36 mph.

    Low: 33 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 46. West wind around 10 mph.

    High: 46 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of snow, mainly after 1am. Increasing clouds, with a low around 31. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

    Low: 31 °F

    Mostly Cloudy
    then Chance
    Snow

  • Sunday

    Sunday: Snow. High near 37. West wind 5 to 10 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    High: 37 °F

    Snow

  • Sunday Night

    Sunday Night: Snow. Low around 28. Northwest wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Low: 28 °F

    Snow

  • Monday

    Monday: Snow likely, mainly before 1pm. Mostly cloudy, with a high near 34. Chance of precipitation is 60%.

    High: 34 °F

    Snow Likely

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 22.

    Low: 22 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 34.

    High: 34 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A chance of snow after 1am. Mostly cloudy, with a low around 31. Chance of precipitation is 30%.

    Low: 31 °F

    Mostly Cloudy
    then Chance
    Snow

Detailed Forecast

Tonight
Mostly cloudy, with a low around 33. West wind 11 to 18 mph, with gusts as high as 36 mph.
Saturday
Mostly sunny, with a high near 46. West wind around 10 mph.
Saturday Night
A chance of snow, mainly after 1am. Increasing clouds, with a low around 31. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.
Sunday
Snow. High near 37. West wind 5 to 10 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Sunday Night
Snow. Low around 28. Northwest wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Monday
Snow likely, mainly before 1pm. Mostly cloudy, with a high near 34. Chance of precipitation is 60%.
Monday Night
Mostly cloudy, with a low around 22.
Tuesday
Mostly cloudy, with a high near 34.
Tuesday Night
A chance of snow after 1am. Mostly cloudy, with a low around 31. Chance of precipitation is 30%.
Wednesday
A chance of rain after 1pm. Mostly cloudy, with a high near 48. Chance of precipitation is 30%.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 36. Chance of precipitation is 50%.
Thursday
A chance of rain. Mostly cloudy, with a high near 46. Chance of precipitation is 30%.
Thursday Night
Mostly cloudy, with a low around 30.
Friday
Mostly sunny, with a high near 48.
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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:
11:36 pm EST Feb 20, 2026
Forecast Valid:
11pm EST Feb 20, 2026-6pm EST Feb 27, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation