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 Snow

34°F

1°C

Humidity 79%
Wind Speed NW 7 mph
Barometer 30.08 in (1021.4 mb)
Dewpoint 28°F (-2°C)
Visibility 4.00 mi
Wind Chill28°F (-2°C)
Last update 7 Dec 8:53 pm EST
Extended Forecast for

Monessen PA

  • Tonight

    Tonight: Mostly cloudy, with a low around 18. North wind 3 to 7 mph.

    Low: 18 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 30. Northeast wind around 8 mph.

    High: 30 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 13. Light and variable wind.

    Low: 13 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 40. South wind 6 to 14 mph.

    High: 40 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A chance of rain after 1am. Mostly cloudy, with a low around 32. Southwest wind 10 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 32 °F

    Mostly Cloudy
    then Chance
    Rain

  • Wednesday

    Wednesday: Rain. High near 46. Breezy. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 46 °F

    Rain and
    Breezy

  • Wednesday Night

    Wednesday Night: Rain and snow before 1am, then a chance of snow. Low around 27. Chance of precipitation is 80%.

    Low: 27 °F

    Rain/Snow

  • Thursday

    Thursday: A chance of snow. Mostly cloudy, with a high near 36. Chance of precipitation is 40%.

    High: 36 °F

    Chance Snow

  • Thursday Night

    Thursday Night: Snow likely, mainly before 1am. Mostly cloudy, with a low around 21. Chance of precipitation is 60%.

    Low: 21 °F

    Snow Likely

Detailed Forecast

Tonight
Mostly cloudy, with a low around 18. North wind 3 to 7 mph.
Monday
Partly sunny, with a high near 30. Northeast wind around 8 mph.
Monday Night
Partly cloudy, with a low around 13. Light and variable wind.
Tuesday
Mostly cloudy, with a high near 40. South wind 6 to 14 mph.
Tuesday Night
A chance of rain after 1am. Mostly cloudy, with a low around 32. Southwest wind 10 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Rain. High near 46. Breezy. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain and snow before 1am, then a chance of snow. Low around 27. Chance of precipitation is 80%.
Thursday
A chance of snow. Mostly cloudy, with a high near 36. Chance of precipitation is 40%.
Thursday Night
Snow likely, mainly before 1am. Mostly cloudy, with a low around 21. Chance of precipitation is 60%.
Friday
A chance of snow. Mostly cloudy, with a high near 33. Chance of precipitation is 50%.
Friday Night
Snow likely. Mostly cloudy, with a low around 12. Chance of precipitation is 60%.
Saturday
A chance of snow. Mostly cloudy, with a high near 25. Chance of precipitation is 50%.
Saturday Night
A chance of snow. Mostly cloudy, with a low around 11. Chance of precipitation is 30%.
Sunday
Mostly cloudy, with a high near 23.
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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:
6:18 pm EST Dec 7, 2025
Forecast Valid:
9pm EST Dec 7, 2025-6pm EST Dec 14, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation