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.

Fair

65°F

18°C

Humidity 70%
Wind Speed SW 3 mph
Barometer 30.14 in (1020.5 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 24 Jun 9:53 am EDT
Extended Forecast for

Castle Shannon PA

  • Today

    Today: Sunny, with a high near 78. Calm wind becoming west around 5 mph in the afternoon.

    High: 78 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 59. West wind around 5 mph becoming south after midnight.

    Low: 59 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 82. Southwest wind 6 to 14 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 82 °F

    Mostly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely. Mostly cloudy, with a low around 63. South wind 3 to 8 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 63 °F

    Showers
    Likely

  • Friday

    Friday: A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 78. South wind 5 to 7 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 78 °F

    Showers
    Likely

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm. Low around 64. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 64 °F

    Showers

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 80. Chance of precipitation is 50%.

    High: 80 °F

    Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of thunderstorms before 8pm. Partly cloudy, with a low around 63. Chance of precipitation is 30%.

    Low: 63 °F

    Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 78. Calm wind becoming west around 5 mph in the afternoon.
Tonight
Partly cloudy, with a low around 59. West wind around 5 mph becoming south after midnight.
Thursday
A chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 82. Southwest wind 6 to 14 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 63. South wind 3 to 8 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 78. South wind 5 to 7 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
Showers and possibly a thunderstorm. Low around 64. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 80. Chance of precipitation is 50%.
Saturday Night
A chance of thunderstorms before 8pm. Partly cloudy, with a low around 63. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 84.
Sunday Night
Partly cloudy, with a low around 66.
Monday
Mostly sunny, with a high near 88.
Monday Night
Partly cloudy, with a low around 70.
Tuesday
Sunny and hot, with a high near 92.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Castle Shannon PA
 40.37°N 80.02°W (Elev. 1109 ft)
Last Update:
2:21 am EDT Jun 24, 2026
Forecast Valid:
10am EDT Jun 24, 2026-6pm EDT Jun 30, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation