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.

Fair

68°F

20°C

Humidity 96%
Wind Speed Calm
Barometer 30.04 in (1016.7 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 29 Jun 2:53 am EDT
Extended Forecast for

Monessen PA

  • Overnight

    Overnight: Patchy fog. Otherwise, partly cloudy, with a low around 66. Calm wind.

    Low: 66 °F

    Patchy Fog

  • Monday

    Monday: Areas of fog before 9am. Otherwise, mostly sunny, with a high near 87. Calm wind.

    High: 87 °F

    Areas Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 69. Calm wind.

    Low: 69 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny and hot, with a high near 92. Heat index values as high as 101. Southwest wind 3 to 8 mph.

    High: 92 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 73. Southwest wind around 5 mph.

    Low: 73 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 95.

    High: 95 °F

    Hot

  • Wednesday Night

    Wednesday Night: Clear, with a low around 73.

    Low: 73 °F

    Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 96.

    High: 96 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

Detailed Forecast

Overnight
Patchy fog. Otherwise, partly cloudy, with a low around 66. Calm wind.
Monday
Areas of fog before 9am. Otherwise, mostly sunny, with a high near 87. Calm wind.
Monday Night
Mostly clear, with a low around 69. Calm wind.
Tuesday
Mostly sunny and hot, with a high near 92. Heat index values as high as 101. Southwest wind 3 to 8 mph.
Tuesday Night
Mostly clear, with a low around 73. Southwest wind around 5 mph.
Wednesday
Sunny and hot, with a high near 95.
Wednesday Night
Clear, with a low around 73.
Thursday
Sunny and hot, with a high near 96.
Thursday Night
Mostly clear, with a low around 74.
Friday
Sunny and hot, with a high near 95.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Chance of precipitation is 40%.
Independence Day
A chance of showers and thunderstorms. Partly sunny and hot, with a high near 91. Chance of precipitation is 40%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Chance of precipitation is 50%.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 89. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Monessen PA
 40.14°N 79.88°W (Elev. 1086 ft)
Last Update:
2:21 am EDT Jun 29, 2026
Forecast Valid:
3am EDT Jun 29, 2026-6pm EDT Jul 5, 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