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Arnold, Pennsylvania Weather Forecast
Arnold, Pennsylvania Weather
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Weather Forecast for Arnold, Pennsylvania : Westmoreland County
Issued: 1:12 am EST Jan 11, 2026 Latitude: 40.5800669 Longitude: -79.7667152 View on Google Maps

MouseOver for Detail Forecast
Overnight Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Mostly Cloudy on Overnight 90% chance of snow on Sunday Partly Sunny on Monday Partly Sunny on Tuesday 90% chance of rain on Wednesday 40% chance of snow on Thursday 30% chance of snow on Friday 50% chance of snow on Saturday
Low: 31°F High: 36°F High: 40°F High: 46°F High: 43°F High: 29°F High: 32°F High: 35°F
Low: 26°F Low: 28°F Low: 38°F Low: 22°F Low: 17°F Low: 20°F  
Mostly Cloudy Snow Partly Sunny Partly Sunny Rain Snow Snow Snow
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Current Conditions at
BUTLER COUNTY - (KBTP)
Clear
as of 1:56 AM EST
Wind Data
Calm
Current Conditions at
ALLEGHENY COUNTY ARPT - (KAGC)
36°
Partly Cloudy
as of 2:05 AM EST
Rel. Humidity: 74%
Dew Point: 28°F
Visibility: 10 Miles
Pressure: 29.94 in.
Flight Rule: VFR
Wind Data
6 MPH
280° West
Cloud Level(s): Few at 2200ft, Scattered at 2900ft, Scattered at 3500ft
Current Conditions at
PITTSBURGH - (KPIT)
34°
Mostly Cloudy
as of 1:51 AM EST
Rel. Humidity: 74%
Dew Point: 27°F
Visibility: 10 Miles
Pressure: 29.94 in.
Flight Rule: MVFR
Wind Data
8 MPH
270° West
Cloud Level(s): Broken at 2600ft, Broken at 3300ft
Current Conditions at
LATROBE - (KLBE)
37°
Feels like 30°F
Mostly Cloudy
as of 2:35 AM EST
Rel. Humidity: 74%
Dew Point: 30°F
Visibility: 10 Miles
Pressure: 29.96 in.
Flight Rule: MVFR
Wind Data
10 MPH
Gust: 20 MPH
240° Southwest
Cloud Level(s): Few at 1900ft, Broken at 2500ft, Broken at 3100ft
Mostly Cloudy on Overnight Overnight... Mostly cloudy, with a low around 31. West wind around 8 mph.
90% chance of snow Sunday Sunday... Snow showers. The snow could be heavy at times. High near 36. West wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 32 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
30% chance of snow Sunday Night Sunday Night... Scattered snow showers, mainly before 9pm. Mostly cloudy, with a low around 26. West wind 8 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Partly Sunny on Monday Monday... Partly sunny, with a high near 40. Southwest wind 9 to 14 mph, with gusts as high as 24 mph.
Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 28. Southwest wind 6 to 8 mph.
Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 46.
50% chance of rain Tuesday Night Tuesday Night... A chance of rain. Mostly cloudy, with a low around 38. Chance of precipitation is 50%.
90% chance of rain Wednesday Wednesday... Rain. High near 43. Chance of precipitation is 90%.
70% chance of rain & snow Wednesday Night Wednesday Night... Rain likely before 1am, then a chance of snow. Mostly cloudy, with a low around 22. Chance of precipitation is 70%.
40% chance of snow Thursday Thursday... A chance of snow. Mostly cloudy, with a high near 29. Chance of precipitation is 40%.
Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 17.
30% chance of snow Friday Friday... A chance of snow. Partly sunny, with a high near 32. Chance of precipitation is 30%.
40% chance of snow Friday Night Friday Night... A chance of snow. Mostly cloudy, with a low around 20. Chance of precipitation is 40%.
50% chance of snow Saturday Saturday... A chance of snow. Mostly cloudy, with a high near 35. Chance of precipitation is 50%.
Current Radar Image


Sun Almanac for Arnold, Pennsylvania
Sunrise: 07:42 AM
Sunset: 5:12 PM
Civil Sunrise:07:12 AM
Civil Sunset: 5:43 PM
Nautical Sunrise: 06:38 AM
Nautical Sunset: 6:16 PM
Astro Sunrise: 06:05 AM
Astro Sunset: 6:49 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.