National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Pittsburgh - Allegheny County Airport (KAGC)

Lat: 40.36°NLon: 79.92°WElev: 1237ft.

Overcast

59°F

15°C

Humidity 83%
Wind Speed S 7 mph
Barometer 30.03 in (1016.7 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 25 Jun 3:53 am EDT
Extended Forecast for

Monessen PA

  • Today

    Today: A chance of showers and thunderstorms, mainly after 5pm. Mostly sunny, with a high near 83. Light and variable wind becoming southwest 5 to 10 mph in the morning. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 83 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before midnight. Mostly cloudy, with a low around 62. Southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 62 °F

    Showers
    Likely

  • Friday

    Friday: A chance of showers and thunderstorms, mainly after 5pm. Mostly cloudy, with a high near 81. West wind 3 to 6 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 81 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8pm. Low around 64. Light east wind. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 64 °F

    Showers

  • Saturday

    Saturday: Showers, with thunderstorms also possible after 11am. High near 80. Light and variable wind becoming west around 6 mph in the morning. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 80 °F

    Showers

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 63 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Sunday

    Sunday: Partly sunny, with a high near 85.

    High: 85 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 66.

    Low: 66 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny and hot, with a high near 90.

    High: 90 °F

    Hot

Detailed Forecast

Today
A chance of showers and thunderstorms, mainly after 5pm. Mostly sunny, with a high near 83. Light and variable wind becoming southwest 5 to 10 mph in the morning. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely, mainly before midnight. Mostly cloudy, with a low around 62. Southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
A chance of showers and thunderstorms, mainly after 5pm. Mostly cloudy, with a high near 81. West wind 3 to 6 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8pm. Low around 64. Light east wind. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
Showers, with thunderstorms also possible after 11am. High near 80. Light and variable wind becoming west around 6 mph in the morning. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Showers and thunderstorms likely before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Partly sunny, with a high near 85.
Sunday Night
Partly cloudy, with a low around 66.
Monday
Mostly sunny and hot, with a high near 90.
Monday Night
Partly cloudy, with a low around 70.
Tuesday
Mostly sunny and hot, with a high near 94.
Tuesday Night
Mostly clear, with a low around 72.
Wednesday
Mostly sunny and hot, with a high near 95.
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ABOUT THIS FORECAST

 
Point Forecast:
Monessen PA
 40.16°N 79.88°W (Elev. 801 ft)
Last Update:
2:21 am EDT Jun 25, 2026
Forecast Valid:
4am EDT Jun 25, 2026-6pm EDT Jul 1, 2026
 
Forecast Discussion
 
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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