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.

Mostly Cloudy

47°F

8°C

Humidity 54%
Wind Speed S 7 mph
Barometer 30.13 in (1021.6 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 19 Mar 11:53 am EDT
Extended Forecast for

Monessen PA

  • This Afternoon

    This Afternoon: A slight chance of rain before 1pm. Partly sunny, with a high near 55. West wind around 7 mph. Chance of precipitation is 20%.

    High: 55 °F

    Slight Chance
    Rain

  • Tonight

    Tonight: Mostly cloudy, with a low around 37. Calm wind.

    Low: 37 °F

    Mostly Cloudy

  • Friday

    Friday: A chance of showers after 2pm. Mostly cloudy, with a high near 64. Southwest wind 5 to 13 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 64 °F

    Partly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: Rain and thunderstorms likely before 11pm, then rain likely between 11pm and 2am. Mostly cloudy, with a low around 45. West wind 5 to 8 mph. Chance of precipitation is 60%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 45 °F

    Rain Likely

  • Saturday

    Saturday: Partly sunny, with a high near 64. West wind 3 to 7 mph.

    High: 64 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of rain after 2pm. Mostly sunny, with a high near 75. Chance of precipitation is 30%.

    High: 75 °F

    Mostly Sunny
    then Chance
    Rain

  • Sunday Night

    Sunday Night: Rain likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 40. Chance of precipitation is 60%.

    Low: 40 °F

    Rain Likely

  • Monday

    Monday: A chance of rain before 8am. Partly sunny, with a high near 50. Chance of precipitation is 30%.

    High: 50 °F

    Chance Rain
    then Partly
    Sunny

Detailed Forecast

This Afternoon
A slight chance of rain before 1pm. Partly sunny, with a high near 55. West wind around 7 mph. Chance of precipitation is 20%.
Tonight
Mostly cloudy, with a low around 37. Calm wind.
Friday
A chance of showers after 2pm. Mostly cloudy, with a high near 64. Southwest wind 5 to 13 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Rain and thunderstorms likely before 11pm, then rain likely between 11pm and 2am. Mostly cloudy, with a low around 45. West wind 5 to 8 mph. Chance of precipitation is 60%. New precipitation amounts between a half and three quarters of an inch possible.
Saturday
Partly sunny, with a high near 64. West wind 3 to 7 mph.
Saturday Night
Partly cloudy, with a low around 46.
Sunday
A chance of rain after 2pm. Mostly sunny, with a high near 75. Chance of precipitation is 30%.
Sunday Night
Rain likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 40. Chance of precipitation is 60%.
Monday
A chance of rain before 8am. Partly sunny, with a high near 50. Chance of precipitation is 30%.
Monday Night
Partly cloudy, with a low around 27.
Tuesday
Mostly sunny, with a high near 52.
Tuesday Night
Mostly cloudy, with a low around 32.
Wednesday
Mostly sunny, with a high near 58.
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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:
5:46 am EDT Mar 19, 2026
Forecast Valid:
12pm EDT Mar 19, 2026-6pm EDT Mar 25, 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