National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Pittsburgh - Allegheny County Airport (KAGC)

Lat: 40.36°NLon: 79.92°WElev: 1237ft.

Fair

53°F

12°C

Humidity 45%
Wind Speed SE 10 mph
Barometer 30.07 in (1019.2 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 8 Jan 7:53 pm EST
Extended Forecast for

2 Miles SW Castle Shannon PA

  • Tonight

    Tonight: A chance of rain between 10pm and 11pm. Partly cloudy, with a low around 49. South wind 8 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.

    Low: 49 °F

    Chance Rain
    then Partly
    Cloudy

  • Friday

    Friday: Rain, mainly after 9am. High near 61. South wind 14 to 17 mph, with gusts as high as 32 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 61 °F

    Rain

  • Friday Night

    Friday Night: A chance of rain. Mostly cloudy, with a low around 40. Northwest wind 5 to 10 mph becoming northeast after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 40 °F

    Chance Rain

  • Saturday

    Saturday: Rain. High near 52. East wind 5 to 7 mph becoming south in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 52 °F

    Rain

  • Saturday Night

    Saturday Night: Rain showers likely before 1am, then a chance of rain and snow showers between 1am and 4am, then a chance of snow showers after 4am. Mostly cloudy, with a low around 32. West wind 9 to 13 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 32 °F

    Showers
    Likely then
    Rain/Snow
    Likely

  • Sunday

    Sunday: Snow showers likely, mainly after 1pm. Mostly cloudy, with a high near 35. Breezy. Chance of precipitation is 70%.

    High: 35 °F

    Snow Showers
    Likely and
    Breezy

  • Sunday Night

    Sunday Night: A chance of snow showers before 1am. Mostly cloudy, with a low around 24. Chance of precipitation is 30%.

    Low: 24 °F

    Chance Snow
    Showers

  • Monday

    Monday: Partly sunny, with a high near 36.

    High: 36 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 29.

    Low: 29 °F

    Partly Cloudy

Detailed Forecast

Tonight
A chance of rain between 10pm and 11pm. Partly cloudy, with a low around 49. South wind 8 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.
Friday
Rain, mainly after 9am. High near 61. South wind 14 to 17 mph, with gusts as high as 32 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
A chance of rain. Mostly cloudy, with a low around 40. Northwest wind 5 to 10 mph becoming northeast after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Rain. High near 52. East wind 5 to 7 mph becoming south in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday Night
Rain showers likely before 1am, then a chance of rain and snow showers between 1am and 4am, then a chance of snow showers after 4am. Mostly cloudy, with a low around 32. West wind 9 to 13 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Sunday
Snow showers likely, mainly after 1pm. Mostly cloudy, with a high near 35. Breezy. Chance of precipitation is 70%.
Sunday Night
A chance of snow showers before 1am. Mostly cloudy, with a low around 24. Chance of precipitation is 30%.
Monday
Partly sunny, with a high near 36.
Monday Night
Partly cloudy, with a low around 29.
Tuesday
Mostly sunny, with a high near 43.
Tuesday Night
Mostly cloudy, with a low around 33.
Wednesday
Showers likely. Mostly cloudy, with a high near 40. Chance of precipitation is 60%.
Wednesday Night
Rain and snow showers likely. Mostly cloudy, with a low around 24. Chance of precipitation is 60%.
Thursday
A chance of snow showers. Mostly cloudy, with a high near 30. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SW Castle Shannon PA
 40.35°N 80.03°W (Elev. 1198 ft)
Last Update:
8:50 pm EST Jan 8, 2026
Forecast Valid:
8pm EST Jan 8, 2026-6pm EST Jan 15, 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