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

49°F

9°C

Humidity 100%
Wind Speed NE 5 mph
Barometer 30.05 in (1018.3 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 13 Oct 3:56 am EDT
Extended Forecast for

Arnold PA

  • Columbus Day

    Columbus Day: A slight chance of showers between 7am and 8am. Partly sunny, with a high near 69. Northeast wind 6 to 9 mph. Chance of precipitation is 20%.

    High: 69 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 46. Northeast wind 3 to 6 mph.

    Low: 46 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: Sunny, with a high near 73. North wind 5 to 9 mph.

    High: 73 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 46. North wind 5 to 7 mph becoming calm after midnight.

    Low: 46 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 67. Northwest wind 5 to 11 mph.

    High: 67 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

  • Thursday

    Thursday: Patchy frost before 9am. Otherwise, sunny, with a high near 62.

    High: 62 °F

    Patchy Frost
    then Sunny

  • Thursday Night

    Thursday Night: Areas of frost after 5am. Otherwise, mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear
    then Areas
    Frost

  • Friday

    Friday: Areas of frost before 9am. Otherwise, sunny, with a high near 66.

    High: 66 °F

    Areas Frost
    then Sunny

Detailed Forecast

Columbus Day
A slight chance of showers between 7am and 8am. Partly sunny, with a high near 69. Northeast wind 6 to 9 mph. Chance of precipitation is 20%.
Tonight
Mostly cloudy, then gradually becoming clear, with a low around 46. Northeast wind 3 to 6 mph.
Tuesday
Sunny, with a high near 73. North wind 5 to 9 mph.
Tuesday Night
Mostly clear, with a low around 46. North wind 5 to 7 mph becoming calm after midnight.
Wednesday
Mostly sunny, with a high near 67. Northwest wind 5 to 11 mph.
Wednesday Night
Mostly clear, with a low around 36.
Thursday
Patchy frost before 9am. Otherwise, sunny, with a high near 62.
Thursday Night
Areas of frost after 5am. Otherwise, mostly clear, with a low around 34.
Friday
Areas of frost before 9am. Otherwise, sunny, with a high near 66.
Friday Night
Mostly cloudy, with a low around 44.
Saturday
Mostly sunny, with a high near 74.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 52. Chance of precipitation is 50%.
Sunday
A chance of showers. Mostly cloudy, with a high near 69. Chance of precipitation is 50%.
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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:
12:26 am EDT Oct 13, 2025
Forecast Valid:
4am EDT Oct 13, 2025-6pm EDT Oct 19, 2025
 
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