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Arnold, Pennsylvania Weather Forecast
Arnold, Pennsylvania Weather
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Weather Forecast for Arnold, Pennsylvania : Westmoreland County
Issued: 6:18 pm EST Dec 7, 2025 Latitude: 40.5800669 Longitude: -79.7667152 View on Google Maps

MouseOver for Detail Forecast
Tonight Monday Tuesday Wednesday Thursday Friday Saturday Sunday
Partly Cloudy on Tonight Mostly Sunny on Monday 20% chance of snow on Tuesday 90% chance of rain on Wednesday 50% chance of snow on Thursday 50% chance of snow on Friday 50% chance of snow on Saturday 30% chance of snow on Sunday
Low: 17°F High: 28°F High: 38°F High: 44°F High: 34°F High: 31°F High: 25°F High: 23°F
Low: 13°F Low: 32°F Low: 26°F Low: 21°F Low: 13°F Low: 12°F  
Partly Cloudy Mostly Sunny Snow Rain Snow Snow Snow Snow
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Current Conditions at
BUTLER COUNTY - (KBTP)
32°
Cloudy
Light Snow
as of 5:56 PM EST
Rel. Humidity: 92%
Dew Point: 30°F
Visibility: 7 Miles
Pressure: 30.07 in.
Flight Rule: VFR
Wind Data
5 MPH
270° West
Cloud Level(s): Broken at 3300ft, Solid Overcast at 3900ft
Current Conditions at
ALLEGHENY COUNTY ARPT - (KAGC)
36°
Cloudy
Light Snow
as of 5:53 PM EST
Rel. Humidity: 69%
Dew Point: 27°F
Visibility: 5 Miles
Pressure: 30.05 in.
Flight Rule: MVFR
Wind Data
6 MPH
290° West
Cloud Level(s): Solid Overcast at 3500ft
Current Conditions at
PITTSBURGH - (KPIT)
34°
Cloudy
Light Snow
as of 5:51 PM EST
Rel. Humidity: 80%
Dew Point: 28°F
Visibility: 8 Miles
Pressure: 30.05 in.
Flight Rule: VFR
Wind Data
6 MPH
290° West
Cloud Level(s): Solid Overcast at 3500ft
Current Conditions at
LATROBE - (KLBE)
36°
Cloudy
Light Snow
as of 6:09 PM EST
Rel. Humidity: 80%
Dew Point: 30°F
Visibility: 9 Miles
Pressure: 30.07 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Scattered at 2400ft, Solid Overcast at 3500ft
Partly Cloudy on Tonight Tonight... Cloudy, then gradually becoming partly cloudy, with a low around 17. Light and variable wind becoming north around 6 mph in the evening.
Mostly Sunny on Monday Monday... Mostly sunny, with a high near 28. Northeast wind around 7 mph.
Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 13. Calm wind.
20% chance of snow Tuesday Tuesday... A slight chance of snow after 1pm. Mostly cloudy, with a high near 38. South wind 5 to 14 mph. Chance of precipitation is 20%.
60% chance of rain & snow Tuesday Night Tuesday Night... Rain likely, possibly mixed with snow after 1am, becoming all rain after 4am. Cloudy, with a low around 32. Southwest wind 9 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
90% chance of rain Wednesday Wednesday... Rain. High near 44. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
90% chance of rain & snow Wednesday Night Wednesday Night... Rain and snow before 1am, then a chance of snow. Low around 26. Chance of precipitation is 90%.
50% chance of snow Thursday Thursday... A chance of snow. Mostly cloudy, with a high near 34. Chance of precipitation is 50%.
60% chance of snow Thursday Night Thursday Night... Snow likely, mainly before 1am. Mostly cloudy, with a low around 21. Chance of precipitation is 60%.
50% chance of snow Friday Friday... A chance of snow. Mostly cloudy, with a high near 31. Chance of precipitation is 50%.
60% chance of snow Friday Night Friday Night... Snow likely. Mostly cloudy, with a low around 13. Chance of precipitation is 60%.
50% chance of snow Saturday Saturday... A chance of snow. Mostly cloudy, with a high near 25. Chance of precipitation is 50%.
40% chance of snow Saturday Night Saturday Night... A chance of snow. Mostly cloudy, with a low around 12. Chance of precipitation is 40%.
30% chance of snow Sunday Sunday... A chance of snow. Mostly cloudy, with a high near 23. Chance of precipitation is 30%.
Current Radar Image


Sun Almanac for Arnold, Pennsylvania
Sunrise: 07:30 AM
Sunset: 4:52 PM
Civil Sunrise:06:59 AM
Civil Sunset: 5:22 PM
Nautical Sunrise: 06:25 AM
Nautical Sunset: 5:57 PM
Astro Sunrise: 05:52 AM
Astro Sunset: 6:30 PM
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