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

61°F

16°C

Humidity 97%
Wind Speed SE 6 mph
Barometer 29.87 in (1011.8 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 4 Nov 8:56 pm EST
Extended Forecast for

Arnold PA

  • Tonight

    Tonight: Rain, mainly before 5am. Low around 60. Light south wind becoming southwest 5 to 10 mph after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 60 °F

    Rain

  • Thursday

    Thursday: A chance of rain before 7am. Mostly cloudy, then gradually becoming sunny, with a high near 71. Southwest wind 8 to 14 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 71 °F

    Chance Rain
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 47. Southwest wind around 5 mph becoming calm.

    Low: 47 °F

    Mostly Cloudy

  • Friday

    Friday: A chance of rain, mainly after 1pm. Mostly cloudy, with a high near 64. Southwest wind 5 to 10 mph becoming west in the afternoon. Chance of precipitation is 30%.

    High: 64 °F

    Chance Rain

  • Friday Night

    Friday Night: A chance of rain, mainly before 1am. Mostly cloudy, with a low around 39. West wind 3 to 7 mph. Chance of precipitation is 30%.

    Low: 39 °F

    Chance Rain

  • Saturday

    Saturday: A chance of rain, mainly after 1pm. Mostly cloudy, with a high near 54. Chance of precipitation is 40%.

    High: 54 °F

    Chance Rain

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 35.

    Low: 35 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 56.

    High: 56 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 33.

    Low: 33 °F

    Partly Cloudy

Detailed Forecast

Tonight
Rain, mainly before 5am. Low around 60. Light south wind becoming southwest 5 to 10 mph after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
A chance of rain before 7am. Mostly cloudy, then gradually becoming sunny, with a high near 71. Southwest wind 8 to 14 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Mostly cloudy, with a low around 47. Southwest wind around 5 mph becoming calm.
Friday
A chance of rain, mainly after 1pm. Mostly cloudy, with a high near 64. Southwest wind 5 to 10 mph becoming west in the afternoon. Chance of precipitation is 30%.
Friday Night
A chance of rain, mainly before 1am. Mostly cloudy, with a low around 39. West wind 3 to 7 mph. Chance of precipitation is 30%.
Saturday
A chance of rain, mainly after 1pm. Mostly cloudy, with a high near 54. Chance of precipitation is 40%.
Saturday Night
Mostly cloudy, with a low around 35.
Sunday
Mostly sunny, with a high near 56.
Sunday Night
Partly cloudy, with a low around 33.
Monday
Mostly sunny, with a high near 59.
Monday Night
Mostly clear, with a low around 35.
Tuesday
Mostly sunny, with a high near 64.
Tuesday Night
Partly cloudy, with a low around 34.
Veterans Day
Mostly sunny, with a high near 60.
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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:
8:21 pm EST Nov 4, 2026
Forecast Valid:
9pm EST Nov 4, 2026-6pm EST Nov 11, 2026
 
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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