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.

Partly Cloudy

72°F

22°C

Humidity 76%
Wind Speed Vrbl 5 mph
Barometer 30.02 in (1016.2 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 18 Aug 9:53 am EDT
Extended Forecast for

Belle Vernon PA

  • Today

    Today: Sunny, with a high near 80. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 80 °F

    Sunny

  • Tonight

    Tonight: Patchy fog after 3am. Otherwise, partly cloudy, with a low around 60. Calm wind.

    Low: 60 °F

    Mostly Clear
    then Patchy
    Fog

  • Wednesday

    Wednesday: Increasing clouds, with a high near 80. Light south wind becoming southwest 5 to 9 mph in the morning.

    High: 80 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: Showers likely, mainly after 8pm. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 63. Light and variable wind. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 63 °F

    Showers
    Likely and
    Patchy Fog

  • Thursday

    Thursday: A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Areas of fog before 8am. Otherwise, mostly cloudy, with a high near 78. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Chance
    Showers and
    Areas Fog
    then Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 8pm. Mostly cloudy, with a low around 59. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 59 °F

    Showers
    Likely then
    Mostly Cloudy

  • Friday

    Friday: A chance of showers after 2pm. Mostly sunny, with a high near 80. Chance of precipitation is 30%.

    High: 80 °F

    Mostly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers before 8pm. Partly cloudy, with a low around 62. Chance of precipitation is 30%.

    Low: 62 °F

    Chance
    Showers then
    Partly Cloudy

  • Saturday

    Saturday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 80. Chance of precipitation is 50%.

    High: 80 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 80. Calm wind becoming northwest around 6 mph in the afternoon.
Tonight
Patchy fog after 3am. Otherwise, partly cloudy, with a low around 60. Calm wind.
Wednesday
Increasing clouds, with a high near 80. Light south wind becoming southwest 5 to 9 mph in the morning.
Wednesday Night
Showers likely, mainly after 8pm. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 63. Light and variable wind. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Areas of fog before 8am. Otherwise, mostly cloudy, with a high near 78. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers likely and possibly a thunderstorm before 8pm. Mostly cloudy, with a low around 59. 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 after 2pm. Mostly sunny, with a high near 80. Chance of precipitation is 30%.
Friday Night
A chance of showers before 8pm. Partly cloudy, with a low around 62. Chance of precipitation is 30%.
Saturday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 80. Chance of precipitation is 50%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Chance of precipitation is 40%.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 77. Chance of precipitation is 50%.
Sunday Night
A chance of thunderstorms. Partly cloudy, with a low around 57. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 76.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Belle Vernon PA
 40.11°N 79.86°W (Elev. 801 ft)
Last Update:
7:11 am EDT Aug 18, 2026
Forecast Valid:
10am EDT Aug 18, 2026-6pm EDT Aug 24, 2026
 
Forecast Discussion
 
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Additional Resources

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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