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Arnold, Pennsylvania Weather Forecast
Arnold, Pennsylvania Weather
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Weather Forecast for Arnold, Pennsylvania : Westmoreland County
Issued: 12:12 pm EST Jan 25, 2026 Latitude: 40.5800669 Longitude: -79.7667152 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Monday Tuesday Wednesday Thursday Friday Saturday
100% chance of snow on This Afternoon 100% chance of snow on Tonight 50% chance of snow on Monday 30% chance of snow on Tuesday Partly Sunny on Wednesday 30% chance of snow on Thursday Partly Sunny on Friday Mostly Cloudy on Saturday
High: 27°F Low: 13°F High: 21°F High: 18°F High: 15°F High: 14°F High: 14°F High: 19°F
Low: 1 °F Low: 0 °F Low: 2 °F Low: -3°F Low: -1°F  
Snow Snow Snow Snow Partly Sunny Snow Partly Sunny Mostly Cloudy
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Current Conditions at
BUTLER COUNTY - (KBTP)
12°
Feels like -2°F
Cloudy
Light Snow Mist
as of 11:56 AM EST
Rel. Humidity: 85%
Dew Point: 9°F
Visibility: 3/4 Miles
Pressure: 29.90 in.
Flight Rule: MVFR
Wind Data
13 MPH
Gust: 21 MPH
070° East
Cloud Level(s): Solid Overcast at 1200ft
Current Conditions at
ALLEGHENY COUNTY ARPT - (KAGC)
18°
Feels like 4°F
Clear
Snow Freezing Fog
as of 11:53 AM EST
Rel. Humidity: 92%
Dew Point: 16°F
Visibility: 1/4 Miles
Pressure: 29.85 in.
Flight Rule: IFR
Wind Data
12 MPH
120° Southeast
Current Conditions at
PITTSBURGH - (KPIT)
16°
Feels like 3°F
Cloudy
Snow Freezing Fog
as of 12:19 PM EST
Rel. Humidity: 85%
Dew Point: 12°F
Visibility: 1/2 Miles
Pressure: 29.84 in.
Flight Rule: IFR
Wind Data
10 MPH
070° East
Current Conditions at
LATROBE - (KLBE)
18°
Feels like 4°F
Cloudy
Snow Blowing Snow
as of 11:47 AM EST
Rel. Humidity: 78%
Dew Point: 12°F
Visibility: 1/2 Miles
Pressure: 29.90 in.
Flight Rule: IFR
Wind Data
12 MPH
Gust: 21 MPH
170° South
100% chance of snow This Afternoon This Afternoon... Snow. The snow could be heavy at times. High near 27. North wind 5 to 10 mph becoming southeast. Winds could gust as high as 21 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 9 to 13 inches possible.
100% chance of snow Tonight Tonight... Snow, mainly before 1am. The snow could be heavy at times. Low around 13. Calm wind becoming west 5 to 9 mph after midnight. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
50% chance of snow Monday Monday... A chance of snow after 5pm. Mostly cloudy, with a high near 21. West wind 9 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
30% chance of snow Monday Night Monday Night... A chance of snow before 7pm. Mostly cloudy, with a low around 1. Wind chill values as low as -18. West wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
30% chance of snow Tuesday Tuesday... A chance of snow after 1pm. Partly sunny, with a high near 18. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
20% chance of snow Tuesday Night Tuesday Night... A slight chance of snow before 1am. Mostly cloudy, with a low around 0. Chance of precipitation is 20%.
Partly Sunny on Wednesday Wednesday... Partly sunny and cold, with a high near 15.
40% chance of snow Wednesday Night Wednesday Night... A chance of snow before 1am. Mostly cloudy, with a low around 2. Chance of precipitation is 40%.
30% chance of snow Thursday Thursday... A chance of snow before 1pm. Mostly cloudy and cold, with a high near 14. Chance of precipitation is 30%.
Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around -3.
Partly Sunny on Friday Friday... Partly sunny and cold, with a high near 14.
Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around -1.
Mostly Cloudy on Saturday Saturday... Mostly cloudy, with a high near 19.
Current Radar Image


Sun Almanac for Arnold, Pennsylvania
Sunrise: 07:35 AM
Sunset: 5:28 PM
Civil Sunrise:07:05 AM
Civil Sunset: 5:58 PM
Nautical Sunrise: 06:32 AM
Nautical Sunset: 6:31 PM
Astro Sunrise: 06:00 AM
Astro Sunset: 7:03 PM
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