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

65°F

18°C

Humidity 66%
Wind Speed Calm
Barometer 30.15 in (1020.6 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 4 Aug 1:53 am EDT
Extended Forecast for

Monessen PA

  • Overnight

    Overnight: Clear, with a low around 55. Calm wind.

    Low: 55 °F

    Clear

  • Monday

    Monday: Mostly sunny, with a high near 85. Calm wind becoming east around 5 mph in the afternoon.

    High: 85 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 61. Light east wind.

    Low: 61 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 85. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 85 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 63. Southeast wind around 5 mph becoming calm in the evening.

    Low: 63 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of sprinkles with a slight chance of showers before 2pm, then a slight chance of showers after 2pm. Partly sunny, with a high near 83. Chance of precipitation is 20%.

    High: 83 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of sprinkles before 2am. Mostly clear, with a low around 64.

    Low: 64 °F

    Chance
    Sprinkles

Detailed Forecast

Overnight
Clear, with a low around 55. Calm wind.
Monday
Mostly sunny, with a high near 85. Calm wind becoming east around 5 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 61. Light east wind.
Tuesday
Partly sunny, with a high near 85. Calm wind becoming southeast around 6 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 63. Southeast wind around 5 mph becoming calm in the evening.
Wednesday
A chance of sprinkles with a slight chance of showers before 2pm, then a slight chance of showers after 2pm. Partly sunny, with a high near 83. Chance of precipitation is 20%.
Wednesday Night
Partly cloudy, with a low around 64.
Thursday
Mostly sunny, with a high near 85.
Thursday Night
A chance of sprinkles before 2am. Mostly clear, with a low around 64.
Friday
Sunny, with a high near 87.
Friday Night
Partly cloudy, with a low around 64.
Saturday
A chance of sprinkles. Mostly sunny, with a high near 89.
Saturday Night
A chance of sprinkles. Partly cloudy, with a low around 66.
Sunday
Mostly sunny and hot, with a high near 90.
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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:
1:04 am EDT Aug 4, 2025
Forecast Valid:
2am EDT Aug 4, 2025-6pm EDT Aug 10, 2025
 
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