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Hazardous Weather Conditions

Current conditions at

Pittsburgh - Allegheny County Airport (KAGC)

Lat: 40.36°NLon: 79.92°WElev: 1237ft.

A Few Clouds

44°F

7°C

Humidity 30%
Wind Speed NW 9 mph
Barometer 30.28 in (1026.9 mb)
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 20 Apr 6:53 pm EDT
Extended Forecast for

Irwin PA

Freeze Warning April 20, 11:00pm until April 21, 09:00am
Click here for hazard details and duration
Freeze Warning

  • Tonight

    Tonight: Widespread frost after 4am. Otherwise, mostly clear, with a low around 26. Northwest wind 5 to 8 mph becoming calm in the evening.

    Low: 26 °F

    Mostly Clear
    then Frost

  • Tuesday

    Tuesday: Widespread frost between 7am and 8am. Otherwise, sunny, with a high near 66. Light south wind becoming southwest 5 to 10 mph in the morning.

    High: 66 °F

    Frost then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of showers, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 52. Southwest wind 7 to 9 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 52 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm before 8am, then showers likely between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 68. West wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 68 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 47. West wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 47 °F

    Chance
    Showers then
    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A chance of showers after 8pm. Mostly cloudy, with a low around 57. Chance of precipitation is 50%.

    Low: 57 °F

    Chance
    Showers

Detailed Forecast

Tonight
Widespread frost after 4am. Otherwise, mostly clear, with a low around 26. Northwest wind 5 to 8 mph becoming calm in the evening.
Tuesday
Widespread frost between 7am and 8am. Otherwise, sunny, with a high near 66. Light south wind becoming southwest 5 to 10 mph in the morning.
Tuesday Night
A slight chance of showers, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 52. Southwest wind 7 to 9 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
Showers likely and possibly a thunderstorm before 8am, then showers likely between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 68. West wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 47. West wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
Mostly sunny, with a high near 77.
Thursday Night
Partly cloudy, with a low around 53.
Friday
Mostly sunny, with a high near 79.
Friday Night
A chance of showers after 8pm. Mostly cloudy, with a low around 57. Chance of precipitation is 50%.
Saturday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 74. Chance of precipitation is 70%.
Saturday Night
Showers likely. Mostly cloudy, with a low around 49. Chance of precipitation is 60%.
Sunday
A chance of showers. Partly sunny, with a high near 71. Chance of precipitation is 40%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 50. Chance of precipitation is 30%.
Monday
A chance of showers. Mostly cloudy, with a high near 69. Chance of precipitation is 50%.
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ABOUT THIS FORECAST

 
Point Forecast:
Irwin PA
 40.32°N 79.71°W (Elev. 1053 ft)
Last Update:
6:36 pm EDT Apr 20, 2026
Forecast Valid:
7pm EDT Apr 20, 2026-6pm EDT Apr 27, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation