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

Excessive Rainfall Possible This Weekend; October Heat Wave in California

A slow moving front will be the focus area for heavy to excessive rainfall and a threat for flash/urban flooding across the northern Gulf Coast and Southeast U.S. through this weekend. Abnormally hot, potentially record-breaking, temperatures will impact southern California and stretch north toward the Bay Area and Central Valley into next week. Read More >

Current conditions at

Pittsburgh/Butler Regional Airport (KBTP)

Lat: 40.78°NLon: 79.96°WElev: 1248ft.

Fair

64°F

18°C

Humidity 50%
Wind Speed E 5 mph
Barometer 30.24 in (1024.5 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 3 Oct 5:56 pm EDT
Extended Forecast for

Arnold PA

  • Tonight

    Tonight: Increasing clouds, with a low around 51. East wind 3 to 6 mph.

    Low: 51 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly cloudy, with a high near 74. Calm wind becoming south around 5 mph in the afternoon.

    High: 74 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 49. Light west wind.

    Low: 49 °F

    Partly Cloudy

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 66. Northwest wind 6 to 13 mph.

    High: 66 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Mostly clear, with a low around 40. Northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 40 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

Detailed Forecast

Tonight
Increasing clouds, with a low around 51. East wind 3 to 6 mph.
Sunday
Mostly cloudy, with a high near 74. Calm wind becoming south around 5 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 49. Light west wind.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 66. Northwest wind 6 to 13 mph.
Monday Night
Mostly clear, with a low around 40. Northwest wind 5 to 7 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 64.
Tuesday Night
Mostly clear, with a low around 42.
Wednesday
Sunny, with a high near 73.
Wednesday Night
Mostly clear, with a low around 49.
Thursday
Mostly sunny, with a high near 72.
Thursday Night
Mostly clear, with a low around 47.
Friday
Sunny, with a high near 72.
Friday Night
Partly cloudy, with a low around 47.
Saturday
Sunny, with a high near 73.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Arnold PA
 40.57°N 79.76°W (Elev. 860 ft)
Last Update:
2:21 pm EDT Oct 3, 2026
Forecast Valid:
6pm EDT Oct 3, 2026-6pm EDT Oct 10, 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