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.

Mostly Cloudy

56°F

13°C

Humidity 77%
Wind Speed E 3 mph
Barometer 30.02 in (1016.8 mb)
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Last update 12 Oct 12:53 am EDT
Extended Forecast for

Arnold PA

  • Overnight

    Overnight: Partly cloudy, with a low around 48. Light northeast wind.

    Low: 48 °F

    Partly Cloudy

  • Sunday

    Sunday: A slight chance of showers between 10am and noon. Partly sunny, with a high near 70. East wind 7 to 10 mph. Chance of precipitation is 20%.

    High: 70 °F

    Slight Chance
    Showers then
    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 48. Northeast wind 5 to 7 mph.

    Low: 48 °F

    Partly Cloudy

  • Columbus Day

    Columbus Day: Mostly sunny, with a high near 70. North wind 6 to 8 mph.

    High: 70 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 47. North wind around 6 mph becoming calm in the evening.

    Low: 47 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Patchy frost after 5am. Otherwise, mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear
    then Patchy
    Frost

Detailed Forecast

Overnight
Partly cloudy, with a low around 48. Light northeast wind.
Sunday
A slight chance of showers between 10am and noon. Partly sunny, with a high near 70. East wind 7 to 10 mph. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 48. Northeast wind 5 to 7 mph.
Columbus Day
Mostly sunny, with a high near 70. North wind 6 to 8 mph.
Monday Night
Mostly clear, with a low around 47. North wind around 6 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 73.
Tuesday Night
Mostly clear, with a low around 44.
Wednesday
Mostly sunny, with a high near 64.
Wednesday Night
Patchy frost after 5am. Otherwise, mostly clear, with a low around 36.
Thursday
Patchy frost before 9am. Otherwise, sunny, with a high near 61.
Thursday Night
Patchy frost. Otherwise, clear, with a low around 34.
Friday
Patchy frost. Otherwise, sunny, with a high near 64.
Friday Night
Partly cloudy, with a low around 41.
Saturday
Partly sunny, with a high near 70.
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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:
12:56 am EDT Oct 12, 2025
Forecast Valid:
1am EDT Oct 12, 2025-6pm EDT Oct 18, 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