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

28°F

-2°C

Humidity 85%
Wind Speed NW 8 G 16 mph
Barometer 29.91 in (1014.7 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 23 Feb 4:53 am EST
Extended Forecast for

Castle Shannon PA

  • Overnight

    Overnight: A chance of snow. Mostly cloudy, with a low around 28. Northwest wind around 14 mph. Chance of precipitation is 40%. Total nighttime snow accumulation of less than a half inch possible.

    Low: 28 °F

    Chance Snow

  • Monday

    Monday: A chance of snow, mainly before 1pm. Mostly cloudy, with a high near 36. Northwest wind 14 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

    High: 36 °F

    Chance Snow

  • Monday Night

    Monday Night: A slight chance of snow before 10pm. Mostly cloudy, with a low around 18. Northwest wind 13 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.

    Low: 18 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 35. West wind 9 to 11 mph becoming southwest in the afternoon.

    High: 35 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Snow before 4am, then rain and snow. Low around 30. South wind 10 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Low: 30 °F

    Chance Snow
    then
    Rain/Snow

  • Wednesday

    Wednesday: Rain and snow before 10am, then a chance of rain between 10am and 1pm. High near 44. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 44 °F

    Rain/Snow
    then Chance
    Rain

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 23.

    Low: 23 °F

    Partly Cloudy

  • Thursday

    Thursday: Rain and snow likely, mainly after 1pm. Mostly cloudy, with a high near 44. Chance of precipitation is 60%.

    High: 44 °F

    Rain/Snow
    Likely

  • Thursday Night

    Thursday Night: A chance of rain and snow before 1am. Mostly cloudy, with a low around 26. Chance of precipitation is 30%.

    Low: 26 °F

    Chance
    Rain/Snow

Detailed Forecast

Overnight
A chance of snow. Mostly cloudy, with a low around 28. Northwest wind around 14 mph. Chance of precipitation is 40%. Total nighttime snow accumulation of less than a half inch possible.
Monday
A chance of snow, mainly before 1pm. Mostly cloudy, with a high near 36. Northwest wind 14 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.
Monday Night
A slight chance of snow before 10pm. Mostly cloudy, with a low around 18. Northwest wind 13 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.
Tuesday
Partly sunny, with a high near 35. West wind 9 to 11 mph becoming southwest in the afternoon.
Tuesday Night
Snow before 4am, then rain and snow. Low around 30. South wind 10 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Wednesday
Rain and snow before 10am, then a chance of rain between 10am and 1pm. High near 44. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Partly cloudy, with a low around 23.
Thursday
Rain and snow likely, mainly after 1pm. Mostly cloudy, with a high near 44. Chance of precipitation is 60%.
Thursday Night
A chance of rain and snow before 1am. Mostly cloudy, with a low around 26. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 43.
Friday Night
Mostly clear, with a low around 30.
Saturday
Sunny, with a high near 54.
Saturday Night
Partly cloudy, with a low around 32.
Sunday
Partly sunny, with a high near 46.
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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:
2:27 am EST Feb 23, 2026
Forecast Valid:
5am EST Feb 23, 2026-6pm EST Mar 1, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation