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

53°F

12°C

Humidity 57%
Wind Speed Calm
Barometer 29.68 in (1005.6 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Last update 11 Nov 9:53 pm EST
Extended Forecast for

Monessen PA

  • Tonight

    Tonight: A chance of rain, mainly after 4am. Mostly cloudy, with a low around 44. Calm wind. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 44 °F

    Mostly Cloudy
    then Chance
    Rain

  • Thursday

    Thursday: Rain, mainly before 2pm, then a chance of showers after 2pm. High near 53. Light and variable wind becoming northwest 6 to 11 mph in the morning. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 53 °F

    Rain

  • Thursday Night

    Thursday Night: A chance of showers before midnight, then a chance of showers after 3am. Mostly cloudy, with a low around 34. North wind 8 to 10 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 34 °F

    Chance
    Showers

  • Friday

    Friday: A chance of rain and snow showers before 10am, then a chance of rain showers. Mostly cloudy, with a high near 46. Northwest wind 7 to 11 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

    High: 46 °F

    Chance
    Rain/Snow
    then Chance
    Showers

  • Friday Night

    Friday Night: A slight chance of rain showers before 10pm, then a slight chance of rain and snow showers between 10pm and 1am, then a slight chance of snow showers after 1am. Mostly cloudy, with a low around 29. Northwest wind 5 to 7 mph becoming calm. Chance of precipitation is 20%.

    Low: 29 °F

    Slight Chance
    Rain/Snow

  • Saturday

    Saturday: A chance of showers, mainly before 1pm. Mostly cloudy, with a high near 46. Chance of precipitation is 40%.

    High: 46 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 30.

    Low: 30 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 48.

    High: 48 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 32.

    Low: 32 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A chance of rain, mainly after 4am. Mostly cloudy, with a low around 44. Calm wind. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Rain, mainly before 2pm, then a chance of showers after 2pm. High near 53. Light and variable wind becoming northwest 6 to 11 mph in the morning. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A chance of showers before midnight, then a chance of showers after 3am. Mostly cloudy, with a low around 34. North wind 8 to 10 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A chance of rain and snow showers before 10am, then a chance of rain showers. Mostly cloudy, with a high near 46. Northwest wind 7 to 11 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Friday Night
A slight chance of rain showers before 10pm, then a slight chance of rain and snow showers between 10pm and 1am, then a slight chance of snow showers after 1am. Mostly cloudy, with a low around 29. Northwest wind 5 to 7 mph becoming calm. Chance of precipitation is 20%.
Saturday
A chance of showers, mainly before 1pm. Mostly cloudy, with a high near 46. Chance of precipitation is 40%.
Saturday Night
Mostly cloudy, with a low around 30.
Sunday
Mostly cloudy, with a high near 48.
Sunday Night
Mostly cloudy, with a low around 32.
Monday
Partly sunny, with a high near 49.
Monday Night
Partly cloudy, with a low around 29.
Tuesday
Mostly sunny, with a high near 51.
Tuesday Night
Partly cloudy, with a low around 27.
Wednesday
Sunny, with a high near 54.
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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:
1:21 pm EST Nov 11, 2026
Forecast Valid:
10pm EST Nov 11, 2026-6pm EST Nov 18, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation