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

77°F

25°C

Humidity 36%
Wind Speed S 10 mph
Barometer 29.95 in (1013.9 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 4 Nov 12:53 pm EST
Extended Forecast for

Irwin PA

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 80. South wind around 7 mph.

    High: 80 °F

    Partly Sunny

  • Tonight

    Tonight: Rain likely and possibly a thunderstorm, then rain after 3am. Low around 60. South wind 9 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 60 °F

    Rain

  • Thursday

    Thursday: A chance of rain before 9am. Mostly cloudy, then gradually becoming sunny, with a high near 70. Southwest wind 9 to 16 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 70 °F

    Chance Rain
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 47. Southwest wind 5 to 7 mph.

    Low: 47 °F

    Partly Cloudy

  • Friday

    Friday: A slight chance of rain. Mostly cloudy, with a high near 63. Southwest wind 6 to 11 mph. Chance of precipitation is 20%.

    High: 63 °F

    Slight Chance
    Rain

  • Friday Night

    Friday Night: A chance of rain, mainly before 1am. Mostly cloudy, with a low around 39. Chance of precipitation is 30%.

    Low: 39 °F

    Chance Rain

  • Saturday

    Saturday: A chance of rain after 1pm. Mostly cloudy, with a high near 52. Chance of precipitation is 30%.

    High: 52 °F

    Mostly Cloudy
    then Chance
    Rain

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 35.

    Low: 35 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 55.

    High: 55 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 80. South wind around 7 mph.
Tonight
Rain likely and possibly a thunderstorm, then rain after 3am. Low around 60. South wind 9 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
A chance of rain before 9am. Mostly cloudy, then gradually becoming sunny, with a high near 70. Southwest wind 9 to 16 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Partly cloudy, with a low around 47. Southwest wind 5 to 7 mph.
Friday
A slight chance of rain. Mostly cloudy, with a high near 63. Southwest wind 6 to 11 mph. Chance of precipitation is 20%.
Friday Night
A chance of rain, mainly before 1am. Mostly cloudy, with a low around 39. Chance of precipitation is 30%.
Saturday
A chance of rain after 1pm. Mostly cloudy, with a high near 52. Chance of precipitation is 30%.
Saturday Night
Mostly cloudy, with a low around 35.
Sunday
Mostly sunny, with a high near 55.
Sunday Night
Partly cloudy, with a low around 33.
Monday
Mostly sunny, with a high near 58.
Monday Night
Mostly clear, with a low around 35.
Tuesday
Sunny, with a high near 62.
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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:
12:21 pm EST Nov 4, 2026
Forecast Valid:
1pm EST Nov 4, 2026-6pm EST Nov 10, 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