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

36°F

2°C

Humidity 100%
Wind Speed Calm
Barometer 29.97 in (1016.1 mb)
Dewpoint 36°F (2°C)
Visibility 9.00 mi
Last update 11 Nov 7:56 am EST
Extended Forecast for

Arnold PA

  • Veterans Day

    Veterans Day: Increasing clouds, with a high near 62. Light and variable wind.

    High: 62 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Rain likely, mainly after 5am. Patchy fog between 8pm and 1am. Otherwise, mostly cloudy, with a low around 43. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 43 °F

    Patchy Fog
    then Rain
    Likely and
    Patchy Fog

  • Thursday

    Thursday: Rain, mainly before 2pm. High near 51. West wind 5 to 15 mph becoming north in the morning. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    High: 51 °F

    Rain then
    Rain Likely

  • Thursday Night

    Thursday Night: A chance of rain before 1am. Mostly cloudy, with a low around 31. Northwest wind 8 to 13 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 31 °F

    Chance Rain

  • Friday

    Friday: A chance of rain, mainly after 1pm. Mostly cloudy, with a high near 45. Northwest wind 9 to 14 mph. Chance of precipitation is 30%.

    High: 45 °F

    Chance Rain

  • Friday Night

    Friday Night: A slight chance of snow. Mostly cloudy, with a low around 29. Chance of precipitation is 20%.

    Low: 29 °F

    Slight Chance
    Snow

  • Saturday

    Saturday: A chance of rain after 1pm. Mostly cloudy, with a high near 45. Chance of precipitation is 30%.

    High: 45 °F

    Partly Sunny
    then Chance
    Rain

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 31.

    Low: 31 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 48.

    High: 48 °F

    Mostly Cloudy

Detailed Forecast

Veterans Day
Increasing clouds, with a high near 62. Light and variable wind.
Tonight
Rain likely, mainly after 5am. Patchy fog between 8pm and 1am. Otherwise, mostly cloudy, with a low around 43. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Rain, mainly before 2pm. High near 51. West wind 5 to 15 mph becoming north in the morning. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A chance of rain before 1am. Mostly cloudy, with a low around 31. Northwest wind 8 to 13 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A chance of rain, mainly after 1pm. Mostly cloudy, with a high near 45. Northwest wind 9 to 14 mph. Chance of precipitation is 30%.
Friday Night
A slight chance of snow. Mostly cloudy, with a low around 29. Chance of precipitation is 20%.
Saturday
A chance of rain after 1pm. Mostly cloudy, with a high near 45. Chance of precipitation is 30%.
Saturday Night
Mostly cloudy, with a low around 31.
Sunday
Mostly cloudy, with a high near 48.
Sunday Night
Mostly cloudy, with a low around 30.
Monday
Partly sunny, with a high near 49.
Monday Night
Mostly cloudy, with a low around 28.
Tuesday
Mostly sunny, with a high near 51.
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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:
8:11 am EST Nov 11, 2026
Forecast Valid:
8am EST Nov 11, 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

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation