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

55°F

13°C

Humidity 31%
Wind Speed SW 17 G 35 mph
Barometer 29.55 in (1001.6 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill51°F (11°C)
Last update 13 Mar 4:53 pm EDT
Extended Forecast for

Castle Shannon PA

High Wind Warning March 13, 05:29pm until March 14, 12:00am
Click here for hazard details and duration
High Wind Warning
  •  
    High Wind Warning March 13, 05:29pm until March 14, 12:00am

    NOW until 12:00am Sat

    High Wind Warning

  • This Afternoon

    High: 54 °F

    Chance
    Showers and
    Windy

  • Tonight

    Tonight: Mostly clear, with a low around 32. Breezy, with a west wind 18 to 22 mph, with gusts as high as 45 mph.

    Low: 32 °F

    Mostly Clear
    and Breezy
    then Partly
    Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 48. West wind 9 to 14 mph.

    High: 48 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 38. Light and variable wind becoming east 5 to 9 mph in the evening.

    Low: 38 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 66. Southeast wind 11 to 18 mph, with gusts as high as 30 mph.

    High: 66 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: A chance of rain after 2am. Mostly cloudy, with a low around 50. Chance of precipitation is 30%.

    Low: 50 °F

    Mostly Cloudy
    then Chance
    Rain

  • Monday

    Monday: Rain, mainly after 8am. High near 68. Breezy. Chance of precipitation is 90%.

    High: 68 °F

    Rain and
    Breezy

  • Monday Night

    Monday Night: A chance of snow before 2am. Mostly cloudy, with a low around 22. Breezy. Chance of precipitation is 30%.

    Low: 22 °F

    Chance Snow
    and Breezy

Detailed Forecast

This Afternoon
A chance of showers. Partly sunny, with a high near 54. Windy, with a southwest wind around 28 mph, with gusts as high as 60 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Mostly clear, with a low around 32. Breezy, with a west wind 18 to 22 mph, with gusts as high as 45 mph.
Saturday
Mostly sunny, with a high near 48. West wind 9 to 14 mph.
Saturday Night
Mostly cloudy, with a low around 38. Light and variable wind becoming east 5 to 9 mph in the evening.
Sunday
Mostly cloudy, with a high near 66. Southeast wind 11 to 18 mph, with gusts as high as 30 mph.
Sunday Night
A chance of rain after 2am. Mostly cloudy, with a low around 50. Chance of precipitation is 30%.
Monday
Rain, mainly after 8am. High near 68. Breezy. Chance of precipitation is 90%.
Monday Night
A chance of snow before 2am. Mostly cloudy, with a low around 22. Breezy. Chance of precipitation is 30%.
Tuesday
Mostly cloudy, with a high near 29. Breezy.
Tuesday Night
Mostly cloudy, with a low around 19.
Wednesday
Partly sunny, with a high near 40.
Wednesday Night
Mostly cloudy, with a low around 32.
Thursday
Mostly cloudy, with a high near 52.
Thursday Night
Mostly cloudy, with a low around 36.
Friday
Partly sunny, with a high near 51.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Castle Shannon PA
 40.37°N 80.02°W (Elev. 1109 ft)
Last Update:
4:26 pm EDT Mar 13, 2026
Forecast Valid:
5pm EDT Mar 13, 2026-6pm EDT Mar 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation