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.

Overcast

45°F

7°C

Humidity 83%
Wind Speed NW 8 mph
Barometer 29.90 in (1013.2 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 14 May 8:53 am EDT
Extended Forecast for

Irwin PA

  • Today

    Today: A chance of rain before noon, then a slight chance of showers after 3pm. Mostly cloudy, with a high near 55. Northwest wind 10 to 15 mph. Chance of precipitation is 50%.

    High: 55 °F

    Chance Rain
    then Slight
    Chance
    Showers

  • Tonight

    Tonight: A slight chance of showers before 9pm, then a chance of sprinkles between 9pm and 10pm. Cloudy, then gradual clearing toward daybreak, with a low around 42. Northwest wind 6 to 10 mph. Chance of precipitation is 20%.

    Low: 42 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Friday

    Friday: Increasing clouds, with a high near 69. West wind 5 to 8 mph.

    High: 69 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Partly cloudy, with a low around 49. Calm wind becoming south around 5 mph after midnight.

    Low: 49 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 80. Southwest wind 6 to 14 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 80 °F

    Mostly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then showers after 2am. Low around 62. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 62 °F

    Showers

  • Sunday

    Sunday: Showers, with thunderstorms also possible after 2pm. High near 83. Chance of precipitation is 80%.

    High: 83 °F

    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of thunderstorms before 8pm. Partly cloudy, with a low around 61. Chance of precipitation is 30%.

    Low: 61 °F

    Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: Mostly sunny and hot, with a high near 90.

    High: 90 °F

    Hot

Detailed Forecast

Today
A chance of rain before noon, then a slight chance of showers after 3pm. Mostly cloudy, with a high near 55. Northwest wind 10 to 15 mph. Chance of precipitation is 50%.
Tonight
A slight chance of showers before 9pm, then a chance of sprinkles between 9pm and 10pm. Cloudy, then gradual clearing toward daybreak, with a low around 42. Northwest wind 6 to 10 mph. Chance of precipitation is 20%.
Friday
Increasing clouds, with a high near 69. West wind 5 to 8 mph.
Friday Night
Partly cloudy, with a low around 49. Calm wind becoming south around 5 mph after midnight.
Saturday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 80. Southwest wind 6 to 14 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then showers after 2am. Low around 62. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers, with thunderstorms also possible after 2pm. High near 83. Chance of precipitation is 80%.
Sunday Night
A chance of thunderstorms before 8pm. Partly cloudy, with a low around 61. Chance of precipitation is 30%.
Monday
Mostly sunny and hot, with a high near 90.
Monday Night
Mostly clear, with a low around 65.
Tuesday
Mostly sunny, with a high near 88.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 65. Chance of precipitation is 40%.
Wednesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 83. Chance of precipitation is 60%.
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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:
7:01 am EDT May 14, 2026
Forecast Valid:
9am EDT May 14, 2026-6pm EDT May 20, 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