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

76°F

24°C

Humidity 45%
Wind Speed E 9 mph
Barometer 30.16 in (1021.1 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 24 Jul 12:53 pm EDT
Extended Forecast for

Monongahela PA

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 81. Southeast wind around 7 mph.

    High: 81 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 63. East wind around 6 mph becoming calm after midnight.

    Low: 63 °F

    Mostly Cloudy

  • Saturday

    Saturday: A slight chance of showers before 1pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 81. Calm wind becoming south around 5 mph in the morning. Chance of precipitation is 40%.

    High: 81 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 62. Calm wind.

    Low: 62 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 83. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 20%.

    High: 83 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Chance of precipitation is 40%.

    Low: 65 °F

    Chance
    Showers

  • Monday

    Monday: A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 60%.

    High: 85 °F

    Chance
    Showers then
    Showers
    Likely

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 68. Chance of precipitation is 70%.

    Low: 68 °F

    Showers
    Likely

  • Tuesday

    Tuesday: Showers, with thunderstorms also possible after 8am. High near 83. Chance of precipitation is 80%.

    High: 83 °F

    Showers

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 81. Southeast wind around 7 mph.
Tonight
Mostly cloudy, with a low around 63. East wind around 6 mph becoming calm after midnight.
Saturday
A slight chance of showers before 1pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 81. Calm wind becoming south around 5 mph in the morning. Chance of precipitation is 40%.
Saturday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 62. Calm wind.
Sunday
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 83. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 20%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Chance of precipitation is 40%.
Monday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 60%.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 68. Chance of precipitation is 70%.
Tuesday
Showers, with thunderstorms also possible after 8am. High near 83. Chance of precipitation is 80%.
Tuesday Night
A chance of showers before 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 40%.
Wednesday
Mostly sunny, with a high near 80.
Wednesday Night
Partly cloudy, with a low around 60.
Thursday
Mostly sunny, with a high near 81.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Monongahela PA
 40.21°N 79.9°W (Elev. 1132 ft)
Last Update:
6:51 am EDT Jul 24, 2026
Forecast Valid:
1pm EDT Jul 24, 2026-6pm EDT Jul 30, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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