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

77°F

25°C

Humidity 37%
Wind Speed E 6 mph
Barometer 30.15 in (1020.8 mb)
Dewpoint 49°F (9°C)
Visibility 9.00 mi
Heat Index78°F (26°C)
Last update 3 Aug 3:53 pm EDT
Extended Forecast for

Monessen PA

  • This Afternoon

    This Afternoon: Sunny, with a high near 82. East wind around 6 mph.

    High: 82 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 55. Light northeast wind.

    Low: 55 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 85. Calm wind becoming east around 6 mph in the afternoon.

    High: 85 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 61. Light southeast wind.

    Low: 61 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 86. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 86 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of showers after 2am. Mostly cloudy, with a low around 64. Chance of precipitation is 20%.

    Low: 64 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: A chance of sprinkles before 2pm. Partly sunny, with a high near 84.

    High: 84 °F

    Chance
    Sprinkles

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 64.

    Low: 64 °F

    Mostly Cloudy

  • Thursday

    Thursday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 84. Chance of precipitation is 30%.

    High: 84 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny, with a high near 82. East wind around 6 mph.
Tonight
Mostly clear, with a low around 55. Light northeast wind.
Monday
Sunny, with a high near 85. Calm wind becoming east around 6 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 61. Light southeast wind.
Tuesday
Partly sunny, with a high near 86. Calm wind becoming southeast around 6 mph in the afternoon.
Tuesday Night
A slight chance of showers after 2am. Mostly cloudy, with a low around 64. Chance of precipitation is 20%.
Wednesday
A chance of sprinkles before 2pm. Partly sunny, with a high near 84.
Wednesday Night
Mostly cloudy, with a low around 64.
Thursday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 84. Chance of precipitation is 30%.
Thursday Night
A chance of showers and thunderstorms before 8pm, then a chance of rain between 8pm and 2am. Partly cloudy, with a low around 64. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 86.
Friday Night
Partly cloudy, with a low around 64.
Saturday
A chance of sprinkles. Mostly sunny, with a high near 88.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Monessen PA
 40.16°N 79.88°W (Elev. 801 ft)
Last Update:
4:04 pm EDT Aug 3, 2025
Forecast Valid:
4pm EDT Aug 3, 2025-6pm EDT Aug 9, 2025
 
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