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

Significant Coastal Impacts to the Eastern Seaboard; Hurricane Nolo to Impact Hawaii

A Nor'easter will 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 expected. Hurricane Nolo is expected to remain south of the Big Island of Hawaii. However, strong winds, damaging waves, and heavy rainfall may bring significant, life-threatening flooding and mudslides through the weekend. Read More >

Current conditions at

Pittsburgh/Butler Regional Airport (KBTP)

Lat: 40.78°NLon: 79.96°WElev: 1248ft.

Fair

68°F

20°C

Humidity 45%
Wind Speed N 12 G 17 mph
Barometer 30.12 in (1020.2 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 26 Sep 12:56 pm EDT
Extended Forecast for

Allison Park PA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 71. North wind 5 to 11 mph.

    High: 71 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 54. North wind 7 to 10 mph, with gusts as high as 22 mph.

    Low: 54 °F

    Mostly Cloudy

  • Sunday

    Sunday: Increasing clouds, with a high near 68. North wind 9 to 15 mph.

    High: 68 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: A slight chance of showers before 10pm. Mostly cloudy, with a low around 56. North wind 5 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.

    Low: 56 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 67. Northwest wind around 6 mph.

    High: 67 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 57.

    Low: 57 °F

    Patchy Fog

  • Tuesday

    Tuesday: Areas of fog before 9am. Otherwise, partly sunny, with a high near 72.

    High: 72 °F

    Areas Fog
    then Partly
    Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 55.

    Low: 55 °F

    Patchy Fog

  • Wednesday

    Wednesday: Areas of fog before 9am. Otherwise, partly sunny, with a high near 72.

    High: 72 °F

    Areas Fog
    then Partly
    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 71. North wind 5 to 11 mph.
Tonight
Mostly cloudy, with a low around 54. North wind 7 to 10 mph, with gusts as high as 22 mph.
Sunday
Increasing clouds, with a high near 68. North wind 9 to 15 mph.
Sunday Night
A slight chance of showers before 10pm. Mostly cloudy, with a low around 56. North wind 5 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Monday
Mostly cloudy, with a high near 67. Northwest wind around 6 mph.
Monday Night
Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 57.
Tuesday
Areas of fog before 9am. Otherwise, partly sunny, with a high near 72.
Tuesday Night
Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 55.
Wednesday
Areas of fog before 9am. Otherwise, partly sunny, with a high near 72.
Wednesday Night
Mostly cloudy, with a low around 59.
Thursday
A chance of showers. Mostly cloudy, with a high near 74. Chance of precipitation is 30%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 60. Chance of precipitation is 30%.
Friday
A chance of showers. Mostly cloudy, with a high near 71. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Allison Park PA
 40.59°N 79.96°W (Elev. 1024 ft)
Last Update:
12:51 pm EDT Sep 26, 2026
Forecast Valid:
1pm EDT Sep 26, 2026-6pm EDT Oct 2, 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