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.

Fair

49°F

9°C

Humidity 46%
Wind Speed W 7 mph
Barometer 30.04 in (1018.6 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 14 Feb 2:53 pm EST
Extended Forecast for

Castle Shannon PA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 49. West wind around 6 mph.

    High: 49 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 33. South wind around 5 mph.

    Low: 33 °F

    Mostly Cloudy

  • Sunday

    Sunday: Rain likely, mainly between 10am and 4pm. Mostly cloudy, with a high near 43. Southwest wind 3 to 5 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 43 °F

    Rain Likely

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 32. Light and variable wind.

    Low: 32 °F

    Mostly Cloudy

  • Washington's Birthday

    Washington's Birthday: Partly sunny, with a high near 48. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 48 °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 55.

    High: 55 °F

    Partly Sunny

  • Tuesday Night

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

    Low: 42 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Rain likely, mainly after 1pm. Mostly cloudy, with a high near 59. Chance of precipitation is 60%.

    High: 59 °F

    Rain Likely

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 49. West wind around 6 mph.
Tonight
Mostly cloudy, with a low around 33. South wind around 5 mph.
Sunday
Rain likely, mainly between 10am and 4pm. Mostly cloudy, with a high near 43. Southwest wind 3 to 5 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
Mostly cloudy, with a low around 32. Light and variable wind.
Washington's Birthday
Partly sunny, with a high near 48. Calm wind becoming southwest around 6 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 33.
Tuesday
Partly sunny, with a high near 55.
Tuesday Night
Mostly cloudy, with a low around 42.
Wednesday
Rain likely, mainly after 1pm. Mostly cloudy, with a high near 59. Chance of precipitation is 60%.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 45. Chance of precipitation is 50%.
Thursday
A chance of rain. Partly sunny, with a high near 59. Chance of precipitation is 40%.
Thursday Night
Rain likely. Mostly cloudy, with a low around 40. Chance of precipitation is 60%.
Friday
A chance of rain. Partly sunny, with a high near 54. Chance of precipitation is 40%.
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:
12:22 pm EST Feb 14, 2026
Forecast Valid:
3pm EST Feb 14, 2026-6pm EST Feb 20, 2026
 
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