National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Pittsburgh - Allegheny County Airport (KAGC)

Lat: 40.36°NLon: 79.92°WElev: 1237ft.

Fog/Mist

36°F

2°C

Humidity 97%
Wind Speed N 5 mph
Barometer 30.04 in (1018.8 mb)
Dewpoint 35°F (2°C)
Visibility 2.00 mi
Wind Chill32°F (0°C)
Last update 19 Nov 3:53 am EST
Extended Forecast for

Castle Shannon PA

  • Today

    Today: Partly sunny, with a high near 48. North wind 3 to 5 mph.

    High: 48 °F

    Partly Sunny

  • Tonight

    Tonight: Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 34. Calm wind.

    Low: 34 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Thursday

    Thursday: Patchy fog before 10am. Otherwise, cloudy, with a high near 50. Light and variable wind.

    High: 50 °F

    Patchy Fog
    then Cloudy

  • Thursday Night

    Thursday Night: A chance of rain after 1am. Cloudy, with a low around 43. South wind 3 to 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 43 °F

    Cloudy then
    Chance Rain

  • Friday

    Friday: A chance of rain. Cloudy, with a high near 55. Southwest wind 5 to 7 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 55 °F

    Chance Rain

  • Friday Night

    Friday Night: Rain likely. Cloudy, with a low around 43. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 43 °F

    Rain Likely

  • Saturday

    Saturday: A chance of rain. Partly sunny, with a high near 53. Chance of precipitation is 40%.

    High: 53 °F

    Chance Rain

  • Saturday Night

    Saturday Night: A chance of rain before 1am. Mostly cloudy, with a low around 36. Chance of precipitation is 30%.

    Low: 36 °F

    Chance Rain

  • Sunday

    Sunday: Mostly sunny, with a high near 54.

    High: 54 °F

    Mostly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 48. North wind 3 to 5 mph.
Tonight
Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 34. Calm wind.
Thursday
Patchy fog before 10am. Otherwise, cloudy, with a high near 50. Light and variable wind.
Thursday Night
A chance of rain after 1am. Cloudy, with a low around 43. South wind 3 to 5 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A chance of rain. Cloudy, with a high near 55. Southwest wind 5 to 7 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Rain likely. Cloudy, with a low around 43. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
A chance of rain. Partly sunny, with a high near 53. Chance of precipitation is 40%.
Saturday Night
A chance of rain before 1am. Mostly cloudy, with a low around 36. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 54.
Sunday Night
Partly cloudy, with a low around 39.
Monday
Partly sunny, with a high near 54.
Monday Night
Mostly cloudy, with a low around 37.
Tuesday
A chance of rain. Partly sunny, with a high near 52. Chance of precipitation is 30%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Castle Shannon PA
 40.37°N 80.02°W (Elev. 1109 ft)
Last Update:
4:27 am EST Nov 19, 2025
Forecast Valid:
4am EST Nov 19, 2025-6pm EST Nov 25, 2025
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation