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Arnold, Pennsylvania Weather Forecast
Arnold, Pennsylvania Weather
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Weather Forecast for Arnold, Pennsylvania : Westmoreland County
Issued: 5:26 pm EST Dec 29, 2025 Latitude: 40.5800669 Longitude: -79.7667152 View on Google Maps

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Tonight Tuesday Wednesday New Year's Day Friday Saturday Sunday Monday
70% chance of blowing snow on Tonight 20% chance of blowing snow on Tuesday 90% chance of snow on Wednesday 20% chance of snow on New Year's Day Partly Sunny on Friday Mostly Cloudy on Saturday Partly Sunny on Sunday Mostly Cloudy on Monday
Low: 21°F High: 28°F High: 32°F High: 24°F High: 33°F High: 33°F High: 35°F High: 39°F
Low: 20°F Low: 14°F Low: 14°F Low: 18°F Low: 16°F Low: 21°F  
Blowing Snow Blowing Snow Snow Snow Partly Sunny Mostly Cloudy Partly Sunny Mostly Cloudy
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Current Conditions at
BUTLER COUNTY - (KBTP)
21°
Feels like 5°F
Cloudy
Light Snow
as of 4:56 PM EST
Rel. Humidity: 73%
Dew Point: 14°F
Visibility: 9 Miles
Pressure: 29.71 in.
Flight Rule: MVFR
Wind Data
22 MPH
Gust: 28 MPH
250° West
Cloud Level(s): Broken at 2800ft, Solid Overcast at 3500ft
Current Conditions at
ALLEGHENY COUNTY ARPT - (KAGC)
21°
Feels like 5°F
Cloudy
Light Snow
as of 4:53 PM EST
Rel. Humidity: 67%
Dew Point: 12°F
Visibility: 4 Miles
Pressure: 29.75 in.
Flight Rule: MVFR
Wind Data
22 MPH
Gust: 36 MPH
250° West
Cloud Level(s): Scattered at 3100ft, Solid Overcast at 4100ft
Current Conditions at
PITTSBURGH - (KPIT)
21°
Feels like 7°F
Cloudy
Light Snow
as of 5:09 PM EST
Rel. Humidity: 67%
Dew Point: 12°F
Visibility: 3 Miles
Pressure: 29.76 in.
Flight Rule: MVFR
Wind Data
16 MPH
Gust: 37 MPH
250° West
Cloud Level(s): Solid Overcast at 2900ft
Current Conditions at
LATROBE - (KLBE)
23°
Feels like 5°F
Cloudy
Light Snow
as of 4:50 PM EST
Rel. Humidity: 67%
Dew Point: 14°F
Visibility: 9 Miles
Pressure: 29.76 in.
Flight Rule: VFR
Wind Data
29 MPH
Gust: 40 MPH
250° West
Cloud Level(s): Broken at 3300ft, Solid Overcast at 4300ft
70% chance of blowing snow Tonight Tonight... Snow likely, mainly before 2am. Patchy blowing snow after 7pm. Cloudy, with a low around 21. Breezy, with a west wind 20 to 22 mph, with gusts as high as 38 mph. Chance of precipitation is 70%. Total nighttime snow accumulation of less than one inch possible.
20% chance of blowing snow Tuesday Tuesday... A slight chance of snow between 9am and 1pm. Patchy blowing snow between 11am and 4pm. Mostly cloudy, with a high near 28. Breezy, with a west wind 16 to 20 mph, with gusts as high as 33 mph. Chance of precipitation is 20%.
80% chance of snow Tuesday Night Tuesday Night... Snow, mainly after 1am. Low around 20. West wind around 14 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
90% chance of snow Wednesday Wednesday... Snow. High near 32. Southwest wind 11 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
90% chance of snow Wednesday Night Wednesday Night... Snow. Low around 14. West wind 9 to 13 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
20% chance of snow New Year's Day New Year's Day... A slight chance of snow before 1pm. Partly sunny, with a high near 24. Chance of precipitation is 20%.
Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 14.
Partly Sunny on Friday Friday... Partly sunny, with a high near 33.
Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 18.
Mostly Cloudy on Saturday Saturday... Mostly cloudy, with a high near 33.
Mostly Cloudy on Saturday Night Saturday Night... Mostly cloudy, with a low around 16.
Partly Sunny on Sunday Sunday... Partly sunny, with a high near 35.
Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 21.
Mostly Cloudy on Monday Monday... Mostly cloudy, with a high near 39.
Current Radar Image


Sun Almanac for Arnold, Pennsylvania
Sunrise: 07:42 AM
Sunset: 5:00 PM
Civil Sunrise:07:11 AM
Civil Sunset: 5:31 PM
Nautical Sunrise: 06:37 AM
Nautical Sunset: 6:05 PM
Astro Sunrise: 06:04 AM
Astro Sunset: 6:39 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.