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Hazardous Weather Conditions

Current conditions at

Pittsburgh - Allegheny County Airport (KAGC)

Lat: 40.36°NLon: 79.92°WElev: 1237ft.

Fair

73°F

23°C

Humidity 62%
Wind Speed N 3 mph
Barometer 29.99 in (1015.3 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 11 Sep 7:53 pm EDT
Extended Forecast for

Monessen PA

Flood Watch September 12, 12:00pm until September 13, 01:00am
Click here for hazard details and duration
Flood Watch

  • Tonight

    Tonight: Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 64. Calm wind.

    Low: 64 °F

    Partly Cloudy
    then Patchy
    Fog

  • Saturday

    Saturday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 3pm. Mostly cloudy, with a high near 84. Calm wind becoming south 5 to 7 mph in the morning. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 84 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers and thunderstorms before 2am, then a chance of showers. Low around 67. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 67 °F

    Showers then
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 84. West wind 3 to 8 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 84 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 61. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 61 °F

    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 64. Calm wind.
Saturday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 3pm. Mostly cloudy, with a high near 84. Calm wind becoming south 5 to 7 mph in the morning. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Showers and thunderstorms before 2am, then a chance of showers. Low around 67. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday
A chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 84. West wind 3 to 8 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 61. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
Mostly sunny, with a high near 76.
Monday Night
Mostly clear, with a low around 54.
Tuesday
Mostly sunny, with a high near 82.
Tuesday Night
Mostly clear, with a low around 62.
Wednesday
Mostly sunny, with a high near 86.
Wednesday Night
A chance of showers. Partly cloudy, with a low around 66. Chance of precipitation is 30%.
Thursday
Showers likely. Partly sunny, with a high near 83. Chance of precipitation is 70%.
Thursday Night
Showers likely. Mostly cloudy, with a low around 61. Chance of precipitation is 60%.
Friday
A chance of showers. Partly sunny, with a high near 78. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Monessen PA
 40.16°N 79.88°W (Elev. 801 ft)
Last Update:
6:04 pm EDT Sep 11, 2026
Forecast Valid:
8pm EDT Sep 11, 2026-6pm EDT Sep 18, 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