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.

Fog/Mist

68°F

20°C

Humidity 96%
Wind Speed SE 3 mph
Barometer 29.97 in (1014.7 mb)
Dewpoint 67°F (19°C)
Visibility 3.00 mi
Last update 27 Jun 11:53 pm EDT
Extended Forecast for

Castle Shannon PA

  • Overnight

    Overnight: Isolated showers. Widespread fog, mainly after 1am. Otherwise, mostly cloudy, with a low around 66. Calm wind. Chance of precipitation is 20%.

    Low: 66 °F

    Isolated
    Showers and
    Fog

  • Sunday

    Sunday: Scattered showers and thunderstorms, mainly after 2pm. Areas of fog before 10am. Otherwise, partly sunny, with a high near 83. Light east wind. Chance of precipitation is 40%.

    High: 83 °F

    Areas Fog
    then
    Scattered
    T-storms

  • Sunday Night

    Sunday Night: Scattered showers and thunderstorms before 8pm. Partly cloudy, with a low around 66. Light east wind. Chance of precipitation is 30%.

    Low: 66 °F

    Scattered
    T-storms then
    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 88. Calm wind becoming south around 5 mph in the afternoon.

    High: 88 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 71. South wind around 5 mph.

    Low: 71 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny and hot, with a high near 92.

    High: 92 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 94.

    High: 94 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 76.

    Low: 76 °F

    Mostly Clear

Detailed Forecast

Overnight
Isolated showers. Widespread fog, mainly after 1am. Otherwise, mostly cloudy, with a low around 66. Calm wind. Chance of precipitation is 20%.
Sunday
Scattered showers and thunderstorms, mainly after 2pm. Areas of fog before 10am. Otherwise, partly sunny, with a high near 83. Light east wind. Chance of precipitation is 40%.
Sunday Night
Scattered showers and thunderstorms before 8pm. Partly cloudy, with a low around 66. Light east wind. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 88. Calm wind becoming south around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 71. South wind around 5 mph.
Tuesday
Mostly sunny and hot, with a high near 92.
Tuesday Night
Mostly clear, with a low around 74.
Wednesday
Sunny and hot, with a high near 94.
Wednesday Night
Mostly clear, with a low around 76.
Thursday
Sunny and hot, with a high near 96.
Thursday Night
Mostly clear, with a low around 76.
Friday
A chance of showers and thunderstorms. Mostly sunny and hot, with a high near 94. Chance of precipitation is 40%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 74. Chance of precipitation is 30%.
Independence Day
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 88. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Castle Shannon PA
 40.35°N 80.03°W (Elev. 1198 ft)
Last Update:
8:21 pm EDT Jun 27, 2026
Forecast Valid:
12am EDT Jun 28, 2026-6pm EDT Jul 4, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation