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.

Overcast

42°F

6°C

Humidity 79%
Wind Speed W 6 mph
Barometer 29.98 in (1016.0 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 7 Nov 2:53 am EST
Extended Forecast for

Monessen PA

  • Overnight

    Overnight: Mostly cloudy, with a low around 34. Calm wind becoming west 5 to 8 mph.

    Low: 34 °F

    Mostly Cloudy

  • Saturday

    Saturday: A slight chance of showers between 1pm and 2pm. Increasing clouds, with a high near 51. West wind 8 to 16 mph. Chance of precipitation is 20%.

    High: 51 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 36. West wind 5 to 10 mph.

    Low: 36 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, then gradually becoming sunny, with a high near 58. Southwest wind 7 to 16 mph.

    High: 58 °F

    Becoming
    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 40. Southwest wind 10 to 13 mph, with gusts as high as 23 mph.

    Low: 40 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 34. Calm wind becoming west 5 to 8 mph.
Saturday
A slight chance of showers between 1pm and 2pm. Increasing clouds, with a high near 51. West wind 8 to 16 mph. Chance of precipitation is 20%.
Saturday Night
Mostly cloudy, with a low around 36. West wind 5 to 10 mph.
Sunday
Partly sunny, then gradually becoming sunny, with a high near 58. Southwest wind 7 to 16 mph.
Sunday Night
Partly cloudy, with a low around 40. Southwest wind 10 to 13 mph, with gusts as high as 23 mph.
Monday
Mostly sunny, with a high near 58.
Monday Night
Mostly clear, with a low around 36.
Tuesday
Sunny, with a high near 65.
Tuesday Night
Mostly clear, with a low around 39.
Veterans Day
Partly sunny, with a high near 62.
Wednesday Night
Mostly cloudy, with a low around 36.
Thursday
A chance of rain. Mostly cloudy, with a high near 55. Chance of precipitation is 40%.
Thursday Night
A chance of rain and snow. Mostly cloudy, with a low around 32. Chance of precipitation is 40%.
Friday
A chance of rain and snow. Mostly cloudy, with a high near 48. Chance of precipitation is 40%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Monessen PA
 40.16°N 79.88°W (Elev. 801 ft)
Last Update:
3:21 am EST Nov 7, 2026
Forecast Valid:
3am EST Nov 7, 2026-6pm EST Nov 13, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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