Current conditions at

Pittsburgh - Allegheny County Airport (KAGC)

Lat: 40.36°NLon: 79.92°WElev: 1237ft.

Fair

62°F

17°C

Humidity 73%
Wind Speed NW 3 mph
Barometer 29.73 in (1006.3 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 25 Apr 5:53 am EDT
Extended Forecast for

Castle Shannon PA

  • Today

    Today: Showers and thunderstorms likely before noon, then showers likely and possibly a thunderstorm between noon and 1pm, then a chance of showers and thunderstorms after 1pm.  Mostly cloudy, with a high near 68. Calm wind becoming west 5 to 9 mph in the morning.  Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 68 °F

    Showers
    Likely

  • Tonight

    Tonight: A slight chance of showers between midnight and 1am.  Mostly cloudy, with a low around 47. Northwest wind around 9 mph.  Chance of precipitation is 20%.

    Low: 47 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: Cloudy, then gradually becoming mostly sunny, with a high near 65. Northeast wind around 10 mph.

    High: 65 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 45. East wind around 8 mph.

    Low: 45 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 72. East wind 7 to 10 mph.

    High: 72 °F

    Sunny

  • Monday Night

    Monday Night: A slight chance of showers after 2am.  Partly cloudy, with a low around 52. Chance of precipitation is 20%.

    Low: 52 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm, mainly after 2pm.  Mostly cloudy, with a high near 72. Chance of precipitation is 70%.

    High: 72 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 54. Chance of precipitation is 50%.

    Low: 54 °F

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: Showers likely, with thunderstorms also possible after 2pm.  Mostly cloudy, with a high near 66. Chance of precipitation is 60%.

    High: 66 °F

    Showers
    Likely

Detailed Forecast

Today
Showers and thunderstorms likely before noon, then showers likely and possibly a thunderstorm between noon and 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 68. Calm wind becoming west 5 to 9 mph in the morning. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
A slight chance of showers between midnight and 1am. Mostly cloudy, with a low around 47. Northwest wind around 9 mph. Chance of precipitation is 20%.
Sunday
Cloudy, then gradually becoming mostly sunny, with a high near 65. Northeast wind around 10 mph.
Sunday Night
Mostly clear, with a low around 45. East wind around 8 mph.
Monday
Sunny, with a high near 72. East wind 7 to 10 mph.
Monday Night
A slight chance of showers after 2am. Partly cloudy, with a low around 52. Chance of precipitation is 20%.
Tuesday
Showers likely and possibly a thunderstorm, mainly after 2pm. Mostly cloudy, with a high near 72. Chance of precipitation is 70%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 54. Chance of precipitation is 50%.
Wednesday
Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 66. Chance of precipitation is 60%.
Wednesday Night
A chance of thunderstorms before 8pm. Mostly cloudy, with a low around 45. Chance of precipitation is 30%.
Thursday
Mostly sunny, with a high near 61.
Thursday Night
Partly cloudy, with a low around 39.
Friday
A chance of showers. Partly sunny, with a high near 60. Chance of precipitation is 30%.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Castle Shannon PA
 40.37°N 80.02°W (Elev. 1109 ft)
6:31 am EDT Apr 25, 2026
6am EDT Apr 25, 2026-6pm EDT May 1, 2026
 
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