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.

Mostly Cloudy

72°F

22°C

Humidity 53%
Wind Speed NW 7 mph
Barometer 29.96 in (1014.4 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 22 Jul 4:53 pm EDT
Extended Forecast for

Irwin PA

  • Tonight

    Tonight: Patchy fog after 1am. Otherwise, mostly clear, with a low around 50. Northwest wind 5 to 10 mph becoming light and variable after midnight.

    Low: 50 °F

    Partly Cloudy
    then Patchy
    Fog

  • Thursday

    Thursday: Areas of fog before 9am. Otherwise, sunny, with a high near 77. Calm wind becoming northeast around 6 mph in the afternoon.

    High: 77 °F

    Areas Fog
    then Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 53. Northeast wind around 5 mph becoming calm in the evening.

    Low: 53 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 82. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 82 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 61. Southeast wind around 5 mph.

    Low: 61 °F

    Partly Cloudy

  • Saturday

    Saturday: A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 83. Chance of precipitation is 20%.

    High: 83 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

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

    Low: 64 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 50%.

    High: 84 °F

    Mostly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 40%.

    Low: 64 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Patchy fog after 1am. Otherwise, mostly clear, with a low around 50. Northwest wind 5 to 10 mph becoming light and variable after midnight.
Thursday
Areas of fog before 9am. Otherwise, sunny, with a high near 77. Calm wind becoming northeast around 6 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 53. Northeast wind around 5 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 82. Calm wind becoming southeast around 6 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 61. Southeast wind around 5 mph.
Saturday
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 83. Chance of precipitation is 20%.
Saturday Night
Partly cloudy, with a low around 64.
Sunday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 50%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 40%.
Monday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 50%.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.
Tuesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 83. Chance of precipitation is 60%.
Tuesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.
Wednesday
A chance of showers. Partly sunny, with a high near 82. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Irwin PA
 40.32°N 79.71°W (Elev. 1053 ft)
Last Update:
2:21 pm EDT Jul 22, 2026
Forecast Valid:
5pm EDT Jul 22, 2026-6pm EDT Jul 29, 2026
 
Forecast Discussion
 
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Additional Resources

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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