National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Significant Coastal Impacts from Nor'Easter; Hurricane Nolo Bring Gusty Winds and Heavy Rain to Hawaii

A nor'easter will continue to bring significant coastal impacts to the Mid-Atlantic and New England into Monday. Moderate to major coastal flooding, heavy rain, strong winds, and high surf are expected. Hurricane Nolo will remain south of the Big Island of Hawaii with gusty winds and heavy rainfall that may bring significant, life-threatening flooding and mudslides through the weekend. Read More >

Current conditions at

Pittsburgh - Allegheny County Airport (KAGC)

Lat: 40.36°NLon: 79.92°WElev: 1237ft.

Fair

56°F

13°C

Humidity 75%
Wind Speed NW 7 mph
Barometer 29.98 in (1015.3 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 27 Sep 1:53 am EDT
Extended Forecast for

Irwin PA

  • Overnight

    Overnight: Partly cloudy, with a low around 53. North wind around 7 mph.

    Low: 53 °F

    Partly Cloudy

  • Sunday

    Sunday: Increasing clouds, with a high near 69. North wind 7 to 15 mph.

    High: 69 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: A slight chance of rain before 9pm. Mostly cloudy, with a low around 57. North wind 5 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.

    Low: 57 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 66. Northwest wind 3 to 6 mph.

    High: 66 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 57. Light and variable wind.

    Low: 57 °F

    Patchy Fog

  • Tuesday

    Tuesday: Areas of fog before 10am. Otherwise, partly sunny, with a high near 72.

    High: 72 °F

    Areas Fog
    then Partly
    Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog after 10pm. Otherwise, partly cloudy, with a low around 55.

    Low: 55 °F

    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 76.

    High: 76 °F

    Patchy Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 59.

    Low: 59 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 53. North wind around 7 mph.
Sunday
Increasing clouds, with a high near 69. North wind 7 to 15 mph.
Sunday Night
A slight chance of rain before 9pm. Mostly cloudy, with a low around 57. North wind 5 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Monday
Mostly cloudy, with a high near 66. Northwest wind 3 to 6 mph.
Monday Night
Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 57. Light and variable wind.
Tuesday
Areas of fog before 10am. Otherwise, partly sunny, with a high near 72.
Tuesday Night
Patchy fog after 10pm. Otherwise, partly cloudy, with a low around 55.
Wednesday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 76.
Wednesday Night
Mostly cloudy, with a low around 59.
Thursday
Mostly cloudy, with a high near 78.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 62. Chance of precipitation is 40%.
Friday
A chance of showers. Mostly cloudy, with a high near 71. Chance of precipitation is 40%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 56. Chance of precipitation is 30%.
Saturday
A chance of showers. Mostly cloudy, with a high near 68. Chance of precipitation is 40%.
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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:
12:41 am EDT Sep 27, 2026
Forecast Valid:
2am EDT Sep 27, 2026-6pm EDT Oct 3, 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