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Arnold, Pennsylvania Weather Forecast
Arnold, Pennsylvania Weather
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Weather Forecast for Arnold, Pennsylvania : Westmoreland County
Issued: 12:21 am EST Dec 11, 2025 Latitude: 40.5800669 Longitude: -79.7667152 View on Google Maps

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Overnight Thursday Friday Saturday Sunday Monday Tuesday Wednesday
30% chance of snow on Overnight 30% chance of snow on Thursday 20% chance of snow on Friday 60% chance of snow on Saturday 40% chance of snow on Sunday Mostly Cloudy on Monday Partly Sunny on Tuesday 30% chance of rain on Wednesday
Low: 22°F High: 29°F High: 33°F High: 33°F High: 22°F High: 23°F High: 32°F High: 41°F
Low: 20°F Low: 20°F Low: 13°F Low: 13°F Low: 14°F Low: 21°F  
Snow Snow Snow Snow Snow Mostly Cloudy Partly Sunny Rain
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Current Conditions at
BUTLER COUNTY - (KBTP)
28°
Feels like 18°F
Cloudy
Light Snow
as of 11:56 PM EST
Rel. Humidity: 86%
Dew Point: 25°F
Visibility: 9 Miles
Pressure: 29.65 in.
Flight Rule: MVFR
Wind Data
12 MPH
280° West
Cloud Level(s): Broken at 2200ft, Broken at 2800ft, Solid Overcast at 4500ft
Current Conditions at
ALLEGHENY COUNTY ARPT - (KAGC)
28°
Feels like 19°F
Cloudy
as of 12:09 AM EST
Rel. Humidity: 74%
Dew Point: 21°F
Visibility: 10 Miles
Pressure: 29.66 in.
Flight Rule: VFR
Wind Data
9 MPH
Gust: 29 MPH
320° Northwest
Cloud Level(s): Scattered at 2400ft, Solid Overcast at 3200ft
Current Conditions at
PITTSBURGH - (KPIT)
28°
Feels like 16°F
Cloudy
Light Snow
as of 11:51 PM EST
Rel. Humidity: 68%
Dew Point: 19°F
Visibility: 9 Miles
Pressure: 29.67 in.
Flight Rule: MVFR
Wind Data
16 MPH
300° Northwest
Cloud Level(s): Broken at 2800ft, Solid Overcast at 3500ft
Current Conditions at
LATROBE - (KLBE)
30°
Feels like 21°F
Cloudy
Unknown Precip
as of 12:15 AM EST
Rel. Humidity: 80%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 29.66 in.
Flight Rule: MVFR
Wind Data
9 MPH
Gust: 18 MPH
280° West
Cloud Level(s): Broken at 2200ft, Solid Overcast at 2800ft
30% chance of snow Overnight Overnight... A chance of snow showers, mainly after 2am. Mostly cloudy, with a low around 22. West wind 11 to 14 mph, with gusts as high as 30 mph. Chance of precipitation is 30%. Total nighttime snow accumulation of less than a half inch possible.
30% chance of snow Thursday Thursday... A chance of snow showers, mainly before 9am. Mostly cloudy, with a high near 29. West wind 14 to 16 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 20. West wind 5 to 10 mph becoming light southwest after midnight.
20% chance of snow Friday Friday... A slight chance of snow. Partly sunny, with a high near 33. Light and variable wind. Chance of precipitation is 20%.
40% chance of snow Friday Night Friday Night... A chance of snow. Mostly cloudy, with a low around 20. Calm wind becoming southwest around 5 mph after midnight. Chance of precipitation is 40%. Little or no snow accumulation expected.
60% chance of snow Saturday Saturday... Snow likely, mainly after 1pm. Cloudy, with a high near 33. Chance of precipitation is 60%.
80% chance of snow Saturday Night Saturday Night... Snow. Low around 13. Chance of precipitation is 80%.
40% chance of snow Sunday Sunday... A chance of snow. Mostly cloudy, with a high near 22. Chance of precipitation is 40%.
30% chance of snow Sunday Night Sunday Night... A chance of snow before 1am. Mostly cloudy, with a low around 13. Chance of precipitation is 30%.
Mostly Cloudy on Monday Monday... Mostly cloudy, with a high near 23.
Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 14.
Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 32.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 21.
30% chance of rain Wednesday Wednesday... A chance of rain. Mostly cloudy, with a high near 41. Chance of precipitation is 30%.
Current Radar Image


Sun Almanac for Arnold, Pennsylvania
Sunrise: 07:33 AM
Sunset: 4:52 PM
Civil Sunrise:07:02 AM
Civil Sunset: 5:23 PM
Nautical Sunrise: 06:28 AM
Nautical Sunset: 5:57 PM
Astro Sunrise: 05:55 AM
Astro Sunset: 6:30 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.