Current conditions at

Pittsburgh - Allegheny County Airport (KAGC)

Lat: 40.36°NLon: 79.92°WElev: 1237ft.

Mostly Cloudy

29°F

-2°C

Humidity 63%
Wind Speed S 6 mph
Barometer 30.11 in (1021.4 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill23°F (-5°C)
Last update 14 Feb 12:53 am EST
Extended Forecast for

Castle Shannon PA

  • Overnight

    Overnight: Mostly cloudy, with a low around 27. Southwest wind around 9 mph.

    Low: 27 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 47. Southwest wind 6 to 8 mph.

    High: 47 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 32. South wind 3 to 5 mph.

    Low: 32 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of rain.  Mostly cloudy, with a high near 46. South wind 3 to 5 mph.  Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 46 °F

    Chance Rain

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 30. Light and variable wind.

    Low: 30 °F

    Partly Cloudy

  • Washington's Birthday

    Washington's Birthday: Partly sunny, with a high near 50.

    High: 50 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 33.

    Low: 33 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 56.

    High: 56 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 42.

    Low: 42 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 27. Southwest wind around 9 mph.
Saturday
Sunny, with a high near 47. Southwest wind 6 to 8 mph.
Saturday Night
Mostly cloudy, with a low around 32. South wind 3 to 5 mph.
Sunday
A chance of rain. Mostly cloudy, with a high near 46. South wind 3 to 5 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
Partly cloudy, with a low around 30. Light and variable wind.
Washington's Birthday
Partly sunny, with a high near 50.
Monday Night
Partly cloudy, with a low around 33.
Tuesday
Partly sunny, with a high near 56.
Tuesday Night
Mostly cloudy, with a low around 42.
Wednesday
Rain likely. Mostly cloudy, with a high near 58. Chance of precipitation is 70%.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 41. Chance of precipitation is 40%.
Thursday
A chance of rain. Partly sunny, with a high near 55. Chance of precipitation is 30%.
Thursday Night
Rain likely. Mostly cloudy, with a low around 39. Chance of precipitation is 60%.
Friday
A chance of rain. Mostly cloudy, with a high near 51. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
Castle Shannon PA
 40.37°N 80.02°W (Elev. 1109 ft)
12:31 am EST Feb 14, 2026
1am EST Feb 14, 2026-6pm EST Feb 20, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database