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.

Overcast

28°F

-2°C

Humidity 75%
Wind Speed W 9 G 21 mph
Barometer 30.26 in (1026.6 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 11 Jan 8:53 pm EST
Extended Forecast for

Arnold PA

  • Tonight

    Tonight: Isolated snow showers before 10pm. Mostly cloudy, with a low around 27. West wind 8 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    Low: 27 °F

    Isolated Snow
    Showers then
    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 39. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 39 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Mostly clear, with a low around 28. Southwest wind 6 to 8 mph.

    Low: 28 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 46. South wind 7 to 11 mph, with gusts as high as 22 mph.

    High: 46 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Showers likely, mainly after 1am. Cloudy, with a low around 38. Southwest wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 38 °F

    Scattered
    Showers then
    Showers
    Likely

  • Wednesday

    Wednesday: Showers. High near 44. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 44 °F

    Showers

  • Wednesday Night

    Wednesday Night: Rain showers before 1am, then snow showers. Low around 24. Chance of precipitation is 80%.

    Low: 24 °F

    Showers then
    Rain/Snow

  • Thursday

    Thursday: Snow showers likely, mainly before 1pm. Mostly cloudy, with a high near 29. Chance of precipitation is 60%.

    High: 29 °F

    Snow Showers
    Likely

  • Thursday Night

    Thursday Night: Scattered snow showers, mainly before 1am. Mostly cloudy, with a low around 16. Chance of precipitation is 30%.

    Low: 16 °F

    Scattered
    Snow Showers

Detailed Forecast

Tonight
Isolated snow showers before 10pm. Mostly cloudy, with a low around 27. West wind 8 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 39. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly clear, with a low around 28. Southwest wind 6 to 8 mph.
Tuesday
Increasing clouds, with a high near 46. South wind 7 to 11 mph, with gusts as high as 22 mph.
Tuesday Night
Showers likely, mainly after 1am. Cloudy, with a low around 38. Southwest wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Showers. High near 44. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain showers before 1am, then snow showers. Low around 24. Chance of precipitation is 80%.
Thursday
Snow showers likely, mainly before 1pm. Mostly cloudy, with a high near 29. Chance of precipitation is 60%.
Thursday Night
Scattered snow showers, mainly before 1am. Mostly cloudy, with a low around 16. Chance of precipitation is 30%.
Friday
Scattered snow showers. Partly sunny, with a high near 31. Chance of precipitation is 30%.
Friday Night
Scattered snow showers. Mostly cloudy, with a low around 19. Chance of precipitation is 30%.
Saturday
Snow showers likely. Mostly cloudy, with a high near 34. Chance of precipitation is 60%.
Saturday Night
Scattered snow showers. Mostly cloudy, with a low around 19. Chance of precipitation is 40%.
Sunday
Scattered snow showers. Partly sunny, with a high near 28. Chance of precipitation is 40%.
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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:
6:02 pm EST Jan 11, 2026
Forecast Valid:
9pm EST Jan 11, 2026-6pm EST Jan 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation