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

49°F

9°C

Humidity 41%
Wind Speed Calm
Barometer 30.59 in (1037.2 mb)
Dewpoint 26°F (-3°C)
Visibility 7.00 mi
Last update 18 Oct 11:53 am EDT
Extended Forecast for

Arnold PA

  • Today

    Today: Sunny, with a high near 62. Calm wind.

    High: 62 °F

    Sunny

  • Tonight

    Tonight: Patchy frost after 3am. Otherwise, clear, with a low around 34. Calm wind.

    Low: 34 °F

    Clear then
    Patchy Frost

  • Monday

    Monday: Areas of frost before 9am. Otherwise, sunny, with a high near 67. Calm wind.

    High: 67 °F

    Areas Frost
    then Sunny

  • Monday Night

    Monday Night: Clear, with a low around 35. Calm wind.

    Low: 35 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 68. Calm wind becoming north around 5 mph in the afternoon.

    High: 68 °F

    Sunny

  • Tuesday Night

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

    Low: 36 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 62. Calm wind.
Tonight
Patchy frost after 3am. Otherwise, clear, with a low around 34. Calm wind.
Monday
Areas of frost before 9am. Otherwise, sunny, with a high near 67. Calm wind.
Monday Night
Clear, with a low around 35. Calm wind.
Tuesday
Sunny, with a high near 68. Calm wind becoming north around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 36.
Wednesday
Sunny, with a high near 67.
Wednesday Night
Mostly clear, with a low around 38.
Thursday
Sunny, with a high near 67.
Thursday Night
Mostly clear, with a low around 42.
Friday
Sunny, with a high near 65.
Friday Night
Mostly clear, with a low around 41.
Saturday
Sunny, with a high near 65.
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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:
5:51 am EDT Oct 18, 2026
Forecast Valid:
11am EDT Oct 18, 2026-6pm EDT Oct 24, 2026
 
Forecast Discussion
 
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Additional Resources

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