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

43°F

6°C

Humidity 89%
Wind Speed Calm
Barometer 30.02 in (1017.6 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Last update 10 Nov 10:56 pm EST
Extended Forecast for

Arnold PA

  • Tonight

    Tonight: Areas of fog. Otherwise, increasing clouds, with a low around 37. Calm wind.

    Low: 37 °F

    Areas Fog

  • Veterans Day

    Veterans Day: Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 62. Light southwest wind.

    High: 62 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Wednesday Night

    Wednesday Night: Rain, mainly after 11pm. Patchy fog between 8pm and 1am. Low around 42. Light and variable wind. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 42 °F

    Chance Rain
    and Patchy
    Fog then Rain
    and Patchy
    Fog

  • Thursday

    Thursday: Rain. High near 51. Northwest wind 5 to 10 mph increasing to 11 to 16 mph in the afternoon. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 51 °F

    Rain

  • Thursday Night

    Thursday Night: A chance of rain. Cloudy, with a low around 32. Northwest wind 8 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 32 °F

    Chance Rain

  • Friday

    Friday: A chance of rain. Mostly cloudy, with a high near 46. Chance of precipitation is 30%.

    High: 46 °F

    Chance Rain

  • Friday Night

    Friday Night: A chance of snow, mixing with rain after 10pm, then gradually ending. Mostly cloudy, with a low around 28. Chance of precipitation is 30%.

    Low: 28 °F

    Chance
    Rain/Snow

  • Saturday

    Saturday: A chance of snow before 1pm, then a chance of rain. Mostly cloudy, with a high near 45. Chance of precipitation is 40%.

    High: 45 °F

    Chance Snow
    then Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 29.

    Low: 29 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Areas of fog. Otherwise, increasing clouds, with a low around 37. Calm wind.
Veterans Day
Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 62. Light southwest wind.
Wednesday Night
Rain, mainly after 11pm. Patchy fog between 8pm and 1am. Low around 42. Light and variable wind. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Rain. High near 51. Northwest wind 5 to 10 mph increasing to 11 to 16 mph in the afternoon. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A chance of rain. Cloudy, with a low around 32. Northwest wind 8 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A chance of rain. Mostly cloudy, with a high near 46. Chance of precipitation is 30%.
Friday Night
A chance of snow, mixing with rain after 10pm, then gradually ending. Mostly cloudy, with a low around 28. Chance of precipitation is 30%.
Saturday
A chance of snow before 1pm, then a chance of rain. Mostly cloudy, with a high near 45. Chance of precipitation is 40%.
Saturday Night
Mostly cloudy, with a low around 29.
Sunday
Mostly cloudy, with a high near 47.
Sunday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 29.
Monday
Areas of fog. Otherwise, partly sunny, with a high near 50.
Monday Night
Patchy fog. Otherwise, mostly cloudy, with a low around 29.
Tuesday
Areas of fog. Otherwise, mostly sunny, with a high near 51.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Arnold PA
 40.57°N 79.76°W (Elev. 860 ft)
Last Update:
9:01 pm EST Nov 10, 2026
Forecast Valid:
11pm EST Nov 10, 2026-6pm EST Nov 17, 2026
 
Forecast Discussion
 
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Additional Resources

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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