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

64°F

18°C

Humidity 56%
Wind Speed Calm
Barometer 30.06 in (1018.3 mb)
Dewpoint 48°F (9°C)
Visibility 9.00 mi
Last update 11 Oct 2:53 pm EDT
Extended Forecast for

Monessen PA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 69. Calm wind.

    High: 69 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 47. Light northeast wind.

    Low: 47 °F

    Partly Cloudy

  • Sunday

    Sunday: A slight chance of showers between 10am and 11am. Partly sunny, with a high near 70. East wind 6 to 13 mph. Chance of precipitation is 20%.

    High: 70 °F

    Slight Chance
    Showers then
    Partly Sunny

  • Sunday Night

    Sunday Night: A slight chance of showers before 8pm, then a slight chance of showers after 2am. Partly cloudy, with a low around 48. Northeast wind 6 to 9 mph. Chance of precipitation is 20%.

    Low: 48 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Columbus Day

    Columbus Day: A slight chance of showers before 8am, then a chance of sprinkles after 2pm. Mostly sunny, with a high near 70. Northeast wind 5 to 10 mph.

    High: 70 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: A chance of sprinkles. Mostly clear, with a low around 46.

    Low: 46 °F

    Chance
    Sprinkles

  • Tuesday

    Tuesday: Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 69. Calm wind.
Tonight
Partly cloudy, with a low around 47. Light northeast wind.
Sunday
A slight chance of showers between 10am and 11am. Partly sunny, with a high near 70. East wind 6 to 13 mph. Chance of precipitation is 20%.
Sunday Night
A slight chance of showers before 8pm, then a slight chance of showers after 2am. Partly cloudy, with a low around 48. Northeast wind 6 to 9 mph. Chance of precipitation is 20%.
Columbus Day
A slight chance of showers before 8am, then a chance of sprinkles after 2pm. Mostly sunny, with a high near 70. Northeast wind 5 to 10 mph.
Monday Night
A chance of sprinkles. Mostly clear, with a low around 46.
Tuesday
Mostly sunny, with a high near 73.
Tuesday Night
Mostly clear, with a low around 45.
Wednesday
Mostly sunny, with a high near 66.
Wednesday Night
Mostly clear, with a low around 38.
Thursday
Sunny, with a high near 62.
Thursday Night
Mostly clear, with a low around 35.
Friday
Sunny, with a high near 64.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Monessen PA
 40.16°N 79.88°W (Elev. 801 ft)
Last Update:
1:14 pm EDT Oct 11, 2025
Forecast Valid:
3pm EDT Oct 11, 2025-6pm EDT Oct 17, 2025
 
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