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

23°F

-5°C

Humidity 63%
Wind Speed N 5 mph
Barometer 30.48 in (1034.5 mb)
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Wind Chill17°F (-8°C)
Last update 2 Mar 8:53 am EST
Extended Forecast for

Monessen PA

  • Today

    Today: A slight chance of snow before 11am. Cloudy, then gradually becoming mostly sunny, with a high near 45. Light and variable wind becoming southeast 5 to 7 mph in the morning. Chance of precipitation is 20%.

    High: 45 °F

    Slight Chance
    Snow then
    Mostly Sunny

  • Tonight

    Tonight: Rain likely, mainly after 3am. Increasing clouds, with a low around 32. Southeast wind 3 to 7 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 32 °F

    Mostly Cloudy
    then Rain
    Likely

  • Tuesday

    Tuesday: Rain, mainly after 7am. High near 58. Southeast wind 5 to 8 mph becoming south in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 58 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain. Low around 49. Southwest wind 3 to 7 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 49 °F

    Rain

  • Wednesday

    Wednesday: Rain. High near 62. South wind 3 to 6 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 62 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain likely before 10pm, then rain likely and possibly a thunderstorm between 10pm and 1am, then rain likely after 1am. Mostly cloudy, with a low around 53. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 53 °F

    Rain Likely

  • Thursday

    Thursday: Rain likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 72. Chance of precipitation is 70%.

    High: 72 °F

    Rain Likely

  • Thursday Night

    Thursday Night: Rain likely, mainly before 1am. Mostly cloudy, with a low around 55. Chance of precipitation is 70%.

    Low: 55 °F

    Rain Likely

  • Friday

    Friday: A chance of rain. Partly sunny, with a high near 72. Chance of precipitation is 40%.

    High: 72 °F

    Chance Rain

Detailed Forecast

Today
A slight chance of snow before 11am. Cloudy, then gradually becoming mostly sunny, with a high near 45. Light and variable wind becoming southeast 5 to 7 mph in the morning. Chance of precipitation is 20%.
Tonight
Rain likely, mainly after 3am. Increasing clouds, with a low around 32. Southeast wind 3 to 7 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
Rain, mainly after 7am. High near 58. Southeast wind 5 to 8 mph becoming south in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday Night
Rain. Low around 49. Southwest wind 3 to 7 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Wednesday
Rain. High near 62. South wind 3 to 6 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
Rain likely before 10pm, then rain likely and possibly a thunderstorm between 10pm and 1am, then rain likely after 1am. Mostly cloudy, with a low around 53. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
Rain likely, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 72. Chance of precipitation is 70%.
Thursday Night
Rain likely, mainly before 1am. Mostly cloudy, with a low around 55. Chance of precipitation is 70%.
Friday
A chance of rain. Partly sunny, with a high near 72. Chance of precipitation is 40%.
Friday Night
A chance of rain. Mostly cloudy, with a low around 57. Chance of precipitation is 30%.
Saturday
Rain likely. Mostly cloudy, with a high near 78. Chance of precipitation is 70%.
Saturday Night
Rain likely. Mostly cloudy, with a low around 54. Chance of precipitation is 70%.
Sunday
A chance of rain. Mostly cloudy, with a high near 70. 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:
2:48 am EST Mar 2, 2026
Forecast Valid:
9am EST Mar 2, 2026-6pm EDT Mar 8, 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