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

68°F

20°C

Humidity 61%
Wind Speed NE 3 mph
Barometer 30.05 in (1017.6 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 6 Sep 8:53 pm EDT
Extended Forecast for

Mount Lebanon PA

  • Tonight

    Tonight: Mostly clear, with a low around 58. Northeast wind around 6 mph.

    Low: 58 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 79. Northeast wind around 6 mph.

    High: 79 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 58. Northeast wind around 5 mph becoming calm in the evening.

    Low: 58 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 83. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 83 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 65. South wind 3 to 6 mph.

    Low: 65 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 70%.

    Low: 69 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 78. Chance of precipitation is 70%.

    High: 78 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of thunderstorms before 8pm. Mostly cloudy, with a low around 59. Chance of precipitation is 30%.

    Low: 59 °F

    Chance
    T-storms then
    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 58. Northeast wind around 6 mph.
Labor Day
Sunny, with a high near 79. Northeast wind around 6 mph.
Monday Night
Mostly clear, with a low around 58. Northeast wind around 5 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 83. Calm wind becoming southwest around 6 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 65. South wind 3 to 6 mph.
Wednesday
Mostly sunny, with a high near 85.
Wednesday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 70%.
Thursday
Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 78. Chance of precipitation is 70%.
Thursday Night
A chance of thunderstorms before 8pm. Mostly cloudy, with a low around 59. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 76.
Friday Night
Partly cloudy, with a low around 58.
Saturday
Mostly sunny, with a high near 80.
Saturday Night
Partly cloudy, with a low around 63.
Sunday
A chance of showers. Mostly sunny, with a high near 83. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mount Lebanon PA
 40.37°N 80.05°W (Elev. 1102 ft)
Last Update:
6:22 pm EDT Sep 6, 2026
Forecast Valid:
10pm EDT Sep 6, 2026-6pm EDT Sep 13, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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