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Arnold, Pennsylvania Weather Forecast
Arnold, Pennsylvania Weather
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Weather Forecast for Arnold, Pennsylvania : Westmoreland County
Issued: 4:48 am EST Jan 15, 2026 Latitude: 40.5800669 Longitude: -79.7667152 View on Google Maps

MouseOver for Detail Forecast
Overnight Thursday Friday Saturday Sunday M.L.King Day Tuesday Wednesday
90% chance of snow on Overnight 80% chance of snow on Thursday 50% chance of snow on Friday 90% chance of snow on Saturday Partly Sunny on Sunday 30% chance of snow on M.L.King Day Partly Sunny on Tuesday Partly Sunny on Wednesday
Low: 18°F High: 23°F High: 36°F High: 38°F High: 24°F High: 24°F High: 17°F High: 27°F
Low: 15°F Low: 29°F Low: 16°F Low: 14°F Low: 6°F Low: 7°F  
Snow Snow Snow Snow Partly Sunny Snow Partly Sunny Partly Sunny
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Current Conditions at
BUTLER COUNTY - (KBTP)
Clear
as of 4:56 AM EST
Wind Data
Calm
Current Conditions at
ALLEGHENY COUNTY ARPT - (KAGC)
18°
Feels like 3°F
Cloudy
Light Snow
as of 4:53 AM EST
Rel. Humidity: 78%
Dew Point: 12°F
Visibility: 7 Miles
Pressure: 29.58 in.
Flight Rule: VFR
Wind Data
15 MPH
Gust: 22 MPH
280° West
Cloud Level(s): Few at 2800ft, Broken at 4600ft, Solid Overcast at 7000ft
Current Conditions at
PITTSBURGH - (KPIT)
18°
Feels like 4°F
Cloudy
Light Snow
as of 4:51 AM EST
Rel. Humidity: 78%
Dew Point: 12°F
Visibility: 2 1/2 Miles
Pressure: 29.60 in.
Flight Rule: IFR
Wind Data
13 MPH
280° West
Cloud Level(s): Few at 800ft, Broken at 1700ft, Solid Overcast at 3000ft
Current Conditions at
LATROBE - (KLBE)
21°
Feels like 9°F
Mostly Cloudy
Light Snow Mist
as of 5:15 AM EST
Rel. Humidity: 85%
Dew Point: 18°F
Visibility: 2 1/2 Miles
Pressure: 29.61 in.
Flight Rule: IFR
Wind Data
12 MPH
250° West
Cloud Level(s): Few at 100ft, Scattered at 1200ft, Broken at 1800ft
90% chance of snow Overnight Overnight... Snow showers. Low around 18. West wind around 16 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. Total nighttime snow accumulation of less than one inch possible.
80% chance of snow Thursday Thursday... Snow showers, mainly before 4pm. High near 23. West wind 15 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
30% chance of snow Thursday Night Thursday Night... Scattered snow showers, mainly before 7pm. Mostly cloudy, with a low around 15. West wind 7 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
50% chance of snow Friday Friday... A chance of snow, mainly after 1pm. Mostly cloudy, with a high near 36. South wind 6 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
50% chance of snow Friday Night Friday Night... A chance of snow. Mostly cloudy, with a low around 29. Southwest wind 6 to 8 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
90% chance of snow Saturday Saturday... Snow. High near 38. Chance of precipitation is 90%.
40% chance of snow Saturday Night Saturday Night... A chance of snow before 1am. Mostly cloudy, with a low around 16. Chance of precipitation is 40%.
Partly Sunny on Sunday Sunday... Partly sunny, with a high near 24.
Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 14.
30% chance of snow M.L.King Day M.L.King Day... A chance of snow. Mostly cloudy, with a high near 24. Chance of precipitation is 30%.
Mostly Cloudy on Monday Night Monday Night... Mostly cloudy, with a low around 6.
Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 17.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 7.
Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 27.
Current Radar Image


Sun Almanac for Arnold, Pennsylvania
Sunrise: 07:40 AM
Sunset: 5:17 PM
Civil Sunrise:07:10 AM
Civil Sunset: 5:47 PM
Nautical Sunrise: 06:37 AM
Nautical Sunset: 6:20 PM
Astro Sunrise: 06:04 AM
Astro Sunset: 6:53 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.