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

Significant Coastal Impacts to the Eastern Seaboard; Tropical Storm Nolo to Impact Hawaii

A Nor'easter will bring significant coastal impacts to the Mid-Atlantic and New England through the weekend. Moderate to major coastal flooding, heavy rain, strong winds and high surf expected. Tropical Storm Nolo will continue to strengthen as it moves north toward the Big Island of Hawaii. Heavy rainfall may bring life-threatening, catastrophic 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

47°F

8°C

Humidity 86%
Wind Speed N 5 mph
Barometer 30.27 in (1025.6 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 25 Sep 2:53 am EDT
Extended Forecast for

Monongahela PA

  • Overnight

    Overnight: Clear, with a low around 43. Light north wind.

    Low: 43 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 69. Light north wind increasing to 5 to 9 mph in the morning.

    High: 69 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 47. North wind 3 to 6 mph.

    Low: 47 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 70. Light north wind increasing to 5 to 10 mph in the morning.

    High: 70 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 51. North wind 5 to 9 mph.

    Low: 51 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 69.

    High: 69 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 54.

    Low: 54 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 67.

    High: 67 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 54.

    Low: 54 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Clear, with a low around 43. Light north wind.
Friday
Sunny, with a high near 69. Light north wind increasing to 5 to 9 mph in the morning.
Friday Night
Mostly clear, with a low around 47. North wind 3 to 6 mph.
Saturday
Mostly sunny, with a high near 70. Light north wind increasing to 5 to 10 mph in the morning.
Saturday Night
Mostly cloudy, with a low around 51. North wind 5 to 9 mph.
Sunday
Partly sunny, with a high near 69.
Sunday Night
Mostly cloudy, with a low around 54.
Monday
Partly sunny, with a high near 67.
Monday Night
Mostly cloudy, with a low around 54.
Tuesday
Mostly sunny, with a high near 71.
Tuesday Night
Partly cloudy, with a low around 53.
Wednesday
Partly sunny, with a high near 74.
Wednesday Night
Mostly cloudy, with a low around 59.
Thursday
Partly sunny, with a high near 77.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Monongahela PA
 40.21°N 79.93°W (Elev. 801 ft)
Last Update:
2:21 am EDT Sep 25, 2026
Forecast Valid:
3am EDT Sep 25, 2026-6pm EDT Oct 1, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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