National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Pittsburgh - Allegheny County Airport (KAGC)

Lat: 40.36°NLon: 79.92°WElev: 1237ft.

Fair

17°F

-8°C

Humidity 70%
Wind Speed SW 8 mph
Barometer 30.24 in (1026.3 mb)
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Wind Chill7°F (-14°C)
Last update 18 Mar 1:53 am EDT
Extended Forecast for

Arnold PA

  • Overnight

    Overnight: Partly cloudy, with a low around 15. Calm wind.

    Low: 15 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 40. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 40 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of snow before 9pm. Mostly cloudy, with a low around 31. Light south wind. Chance of precipitation is 20%.

    Low: 31 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Thursday

    Thursday: A slight chance of rain after 2pm. Mostly cloudy, with a high near 51. South wind 3 to 6 mph. Chance of precipitation is 20%.

    High: 51 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Thursday Night

    Thursday Night: A slight chance of rain before 2am. Mostly cloudy, with a low around 35. Calm wind. Chance of precipitation is 20%.

    Low: 35 °F

    Slight Chance
    Rain

  • Friday

    Friday: A chance of rain after 2pm. Mostly cloudy, with a high near 60. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 60 °F

    Mostly Cloudy
    then Chance
    Rain

  • Friday Night

    Friday Night: Rain likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 45. Chance of precipitation is 60%.

    Low: 45 °F

    Rain Likely

  • Saturday

    Saturday: A chance of rain before 8am. Partly sunny, with a high near 64. Chance of precipitation is 30%.

    High: 64 °F

    Chance Rain
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 44.

    Low: 44 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 15. Calm wind.
Wednesday
Partly sunny, with a high near 40. Calm wind becoming south 5 to 7 mph in the afternoon.
Wednesday Night
A slight chance of snow before 9pm. Mostly cloudy, with a low around 31. Light south wind. Chance of precipitation is 20%.
Thursday
A slight chance of rain after 2pm. Mostly cloudy, with a high near 51. South wind 3 to 6 mph. Chance of precipitation is 20%.
Thursday Night
A slight chance of rain before 2am. Mostly cloudy, with a low around 35. Calm wind. Chance of precipitation is 20%.
Friday
A chance of rain after 2pm. Mostly cloudy, with a high near 60. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Rain likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 45. Chance of precipitation is 60%.
Saturday
A chance of rain before 8am. Partly sunny, with a high near 64. Chance of precipitation is 30%.
Saturday Night
Mostly cloudy, with a low around 44.
Sunday
A chance of rain after 8am. Partly sunny, with a high near 67. Chance of precipitation is 40%.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 36. Chance of precipitation is 40%.
Monday
Mostly sunny, with a high near 50.
Monday Night
Partly cloudy, with a low around 28.
Tuesday
Partly sunny, with a high near 52.
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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:
2:21 am EDT Mar 18, 2026
Forecast Valid:
2am EDT Mar 18, 2026-6pm EDT Mar 24, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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