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.

Mostly Cloudy

66°F

19°C

Humidity 78%
Wind Speed N 8 mph
Barometer 30.04 in (1017.4 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 1 Apr 3:53 pm EDT
Extended Forecast for

Castle Shannon PA

  • This Afternoon

    This Afternoon: A chance of showers and thunderstorms. Partly sunny, with a high near 65. North wind around 7 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 65 °F

    Chance
    T-storms

  • Tonight

    Tonight: Showers and possibly a thunderstorm before 11pm, then a chance of showers. Low around 56. Northeast wind 5 to 7 mph becoming light and variable after midnight. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 56 °F

    Showers then
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers and thunderstorms, mainly after 3pm. Partly sunny, with a high near 79. Southeast wind 6 to 11 mph becoming south in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 79 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. South wind 8 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 63 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 79. Southwest wind 13 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 79 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 62 °F

    Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: A chance of showers after 2pm. Mostly sunny, with a high near 82. Chance of precipitation is 40%.

    High: 82 °F

    Mostly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: Showers, mainly after 8pm. Low around 49. Chance of precipitation is 90%.

    Low: 49 °F

    Showers
    Likely then
    Showers

  • Sunday

    Sunday: Showers, mainly before 8am. High near 54. Chance of precipitation is 80%.

    High: 54 °F

    Showers then
    Chance
    Showers

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms. Partly sunny, with a high near 65. North wind around 7 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and possibly a thunderstorm before 11pm, then a chance of showers. Low around 56. Northeast wind 5 to 7 mph becoming light and variable after midnight. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of showers and thunderstorms, mainly after 3pm. Partly sunny, with a high near 79. Southeast wind 6 to 11 mph becoming south in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. South wind 8 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 79. Southwest wind 13 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
A chance of showers after 2pm. Mostly sunny, with a high near 82. Chance of precipitation is 40%.
Saturday Night
Showers, mainly after 8pm. Low around 49. Chance of precipitation is 90%.
Sunday
Showers, mainly before 8am. High near 54. Chance of precipitation is 80%.
Sunday Night
Mostly cloudy, with a low around 36.
Monday
Partly sunny, with a high near 52.
Monday Night
Mostly cloudy, with a low around 36.
Tuesday
Mostly sunny, with a high near 48.
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:
2:47 pm EDT Apr 1, 2026
Forecast Valid:
4pm EDT Apr 1, 2026-6pm EDT Apr 7, 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