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.

Mostly Cloudy

49°F

9°C

Humidity 55%
Wind Speed W 9 G 16 mph
Barometer 29.90 in (1013.6 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 8 Nov 9:56 pm EST
Extended Forecast for

Arnold PA

  • Tonight

    Tonight: Mostly cloudy, with a low around 40. West wind 11 to 13 mph, with gusts as high as 24 mph.

    Low: 40 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 56. Northwest wind 11 to 15 mph.

    High: 56 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 34. Calm wind becoming southwest around 6 mph after midnight.

    Low: 34 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 63. West wind 9 to 14 mph.

    High: 63 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 35. West wind around 6 mph becoming calm in the evening.

    Low: 35 °F

    Mostly Clear

  • Veterans Day

    Veterans Day: Partly sunny, with a high near 62.

    High: 62 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A chance of rain after 1am. Mostly cloudy, with a low around 38. Chance of precipitation is 40%.

    Low: 38 °F

    Mostly Cloudy
    then Chance
    Rain

  • Thursday

    Thursday: Rain. High near 50. Chance of precipitation is 90%.

    High: 50 °F

    Rain

  • Thursday Night

    Thursday Night: Rain likely. Cloudy, with a low around 31. Chance of precipitation is 70%.

    Low: 31 °F

    Rain Likely

Detailed Forecast

Tonight
Mostly cloudy, with a low around 40. West wind 11 to 13 mph, with gusts as high as 24 mph.
Monday
Mostly cloudy, with a high near 56. Northwest wind 11 to 15 mph.
Monday Night
Partly cloudy, with a low around 34. Calm wind becoming southwest around 6 mph after midnight.
Tuesday
Sunny, with a high near 63. West wind 9 to 14 mph.
Tuesday Night
Mostly clear, with a low around 35. West wind around 6 mph becoming calm in the evening.
Veterans Day
Partly sunny, with a high near 62.
Wednesday Night
A chance of rain after 1am. Mostly cloudy, with a low around 38. Chance of precipitation is 40%.
Thursday
Rain. High near 50. Chance of precipitation is 90%.
Thursday Night
Rain likely. Cloudy, with a low around 31. Chance of precipitation is 70%.
Friday
Rain and snow likely. Mostly cloudy, with a high near 42. Chance of precipitation is 60%.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 28. Chance of precipitation is 40%.
Saturday
Mostly cloudy, with a high near 43.
Saturday Night
Mostly cloudy, with a low around 28.
Sunday
Partly sunny, with a high near 47.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Arnold PA
 40.59°N 79.76°W (Elev. 1001 ft)
Last Update:
8:36 pm EST Nov 8, 2026
Forecast Valid:
10pm EST Nov 8, 2026-6pm EST Nov 15, 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