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.

Light Rain Fog/Mist

68°F

20°C

Humidity 96%
Wind Speed NW 7 mph
Barometer 29.78 in (1007.9 mb)
Dewpoint 67°F (19°C)
Visibility 5.00 mi
Last update 3 Aug 1:53 am EDT
Extended Forecast for

Monongahela PA

  • Overnight

    Overnight: Scattered showers. Mostly cloudy, with a low around 66. West wind around 5 mph. Chance of precipitation is 30%.

    Low: 66 °F

    Scattered
    Showers

  • Monday

    Monday: Cloudy through mid morning, then gradual clearing, with a high near 80. North wind around 8 mph.

    High: 80 °F

    Gradual
    Clearing

  • Monday Night

    Monday Night: Patchy fog after 2am. Otherwise, mostly clear, with a low around 57. North wind around 5 mph becoming calm in the evening.

    Low: 57 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 9am. Otherwise, sunny, with a high near 84. Calm wind becoming east around 5 mph in the afternoon.

    High: 84 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 65. Light southeast wind.

    Low: 65 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Scattered showers and thunderstorms after 2pm. Partly sunny, with a high near 86. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 86 °F

    Mostly Sunny
    then
    Scattered
    T-storms

  • Wednesday Night

    Wednesday Night: Scattered showers and thunderstorms before 2am. Mostly cloudy, with a low around 68. Chance of precipitation is 50%.

    Low: 68 °F

    Scattered
    T-storms

  • Thursday

    Thursday: A chance of showers and thunderstorms between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 60%.

    High: 84 °F

    Chance
    T-storms then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.

    Low: 68 °F

    Showers
    Likely then
    Chance
    T-storms

Detailed Forecast

Overnight
Scattered showers. Mostly cloudy, with a low around 66. West wind around 5 mph. Chance of precipitation is 30%.
Monday
Cloudy through mid morning, then gradual clearing, with a high near 80. North wind around 8 mph.
Monday Night
Patchy fog after 2am. Otherwise, mostly clear, with a low around 57. North wind around 5 mph becoming calm in the evening.
Tuesday
Patchy fog before 9am. Otherwise, sunny, with a high near 84. Calm wind becoming east around 5 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 65. Light southeast wind.
Wednesday
Scattered showers and thunderstorms after 2pm. Partly sunny, with a high near 86. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Scattered showers and thunderstorms before 2am. Mostly cloudy, with a low around 68. Chance of precipitation is 50%.
Thursday
A chance of showers and thunderstorms between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 60%.
Thursday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.
Friday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 70%.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.
Saturday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 84. Chance of precipitation is 60%.
Saturday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 85. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
Monongahela PA
 40.19°N 79.93°W (Elev. 863 ft)
Last Update:
12:11 am EDT Aug 3, 2026
Forecast Valid:
2am EDT Aug 3, 2026-6pm EDT Aug 9, 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