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

18°F

-8°C

Humidity 77%
Wind Speed NE 6 mph
Barometer 30.25 in (1026.9 mb)
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Wind Chill10°F (-12°C)
Last update 8 Dec 5:56 am EST
Extended Forecast for

Arnold PA

  • Today

    Today: Mostly cloudy, with a high near 28. Northeast wind 6 to 8 mph.

    High: 28 °F

    Mostly Cloudy

  • Tonight

    Tonight: Partly cloudy, with a low around 12. Light and variable wind.

    Low: 12 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A slight chance of snow after 1pm. Increasing clouds, with a high near 38. Light south wind increasing to 9 to 14 mph in the morning. Chance of precipitation is 20%.

    High: 38 °F

    Partly Sunny
    then Slight
    Chance Snow

  • Tuesday Night

    Tuesday Night: Rain likely, possibly mixed with snow after 1am, becoming all rain after 4am. Cloudy, with a low around 32. Southwest wind 9 to 13 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 32 °F

    Cloudy then
    Rain/Snow
    Likely

  • Wednesday

    Wednesday: Rain. High near 43. Southwest wind 16 to 18 mph, with gusts as high as 34 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 43 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain and snow, becoming all snow after 10pm. Low around 26. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 26 °F

    Rain/Snow
    then Snow

  • Thursday

    Thursday: A chance of snow. Mostly cloudy, with a high near 32. Chance of precipitation is 50%.

    High: 32 °F

    Chance Snow

  • Thursday Night

    Thursday Night: A chance of snow. Mostly cloudy, with a low around 22. Chance of precipitation is 40%.

    Low: 22 °F

    Chance Snow

  • Friday

    Friday: A chance of snow. Mostly cloudy, with a high near 32. Chance of precipitation is 50%.

    High: 32 °F

    Chance Snow

Detailed Forecast

Today
Mostly cloudy, with a high near 28. Northeast wind 6 to 8 mph.
Tonight
Partly cloudy, with a low around 12. Light and variable wind.
Tuesday
A slight chance of snow after 1pm. Increasing clouds, with a high near 38. Light south wind increasing to 9 to 14 mph in the morning. Chance of precipitation is 20%.
Tuesday Night
Rain likely, possibly mixed with snow after 1am, becoming all rain after 4am. Cloudy, with a low around 32. Southwest wind 9 to 13 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Wednesday
Rain. High near 43. Southwest wind 16 to 18 mph, with gusts as high as 34 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain and snow, becoming all snow after 10pm. Low around 26. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
A chance of snow. Mostly cloudy, with a high near 32. Chance of precipitation is 50%.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 22. Chance of precipitation is 40%.
Friday
A chance of snow. Mostly cloudy, with a high near 32. Chance of precipitation is 50%.
Friday Night
Snow. Low around 14. Chance of precipitation is 80%.
Saturday
A chance of snow. Mostly cloudy, with a high near 23. Chance of precipitation is 50%.
Saturday Night
A chance of snow. Mostly cloudy, with a low around 12. Chance of precipitation is 40%.
Sunday
A chance of snow. Mostly cloudy, with a high near 23. Chance of precipitation is 30%.
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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:
5:42 am EST Dec 8, 2025
Forecast Valid:
6am EST Dec 8, 2025-6pm EST Dec 14, 2025
 
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