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

Pittsburgh/Butler Regional Airport (KBTP)

Lat: 40.78°NLon: 79.96°WElev: 1248ft.

Fair

38°F

3°C

Humidity 100%
Wind Speed Calm
Barometer 30.14 in (1021.9 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Last update 3 Nov 6:56 am EST
Extended Forecast for

Arnold PA

  • Today

    Today: Increasing clouds, with a high near 57. Southwest wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon.

    High: 57 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 36. West wind 7 to 10 mph, with gusts as high as 21 mph.

    Low: 36 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: Sunny, with a high near 57. West wind 6 to 11 mph.

    High: 57 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 37. Calm wind becoming south around 6 mph after midnight.

    Low: 37 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of rain after 1pm. Mostly sunny, with a high near 63. Southwest wind 9 to 17 mph. Chance of precipitation is 40%.

    High: 63 °F

    Mostly Sunny
    then Chance
    Rain

  • Wednesday Night

    Wednesday Night: A chance of rain before 1am. Mostly cloudy, with a low around 39. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 39 °F

    Chance Rain

  • Thursday

    Thursday: Sunny, with a high near 55.

    High: 55 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 36.

    Low: 36 °F

    Partly Cloudy

  • Friday

    Friday: Rain likely after 1pm. Mostly cloudy, with a high near 65. Chance of precipitation is 70%.

    High: 65 °F

    Partly Sunny
    then Rain
    Likely

Detailed Forecast

Today
Increasing clouds, with a high near 57. Southwest wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon.
Tonight
Mostly cloudy, then gradually becoming clear, with a low around 36. West wind 7 to 10 mph, with gusts as high as 21 mph.
Tuesday
Sunny, with a high near 57. West wind 6 to 11 mph.
Tuesday Night
Partly cloudy, with a low around 37. Calm wind becoming south around 6 mph after midnight.
Wednesday
A chance of rain after 1pm. Mostly sunny, with a high near 63. Southwest wind 9 to 17 mph. Chance of precipitation is 40%.
Wednesday Night
A chance of rain before 1am. Mostly cloudy, with a low around 39. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Sunny, with a high near 55.
Thursday Night
Partly cloudy, with a low around 36.
Friday
Rain likely after 1pm. Mostly cloudy, with a high near 65. Chance of precipitation is 70%.
Friday Night
Rain. Low around 44. Chance of precipitation is 80%.
Saturday
A chance of rain. Mostly cloudy, with a high near 54. Chance of precipitation is 30%.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 38. Chance of precipitation is 50%.
Sunday
Rain likely. Mostly cloudy, with a high near 50. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Arnold PA
 40.59°N 79.76°W (Elev. 1001 ft)
Last Update:
5:56 am EST Nov 3, 2025
Forecast Valid:
8am EST Nov 3, 2025-6pm EST Nov 9, 2025
 
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