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Arnold, Pennsylvania Weather Forecast
Arnold, Pennsylvania Weather
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Weather Forecast for Arnold, Pennsylvania : Westmoreland County
Issued: 12:27 am EST Dec 13, 2025 Latitude: 40.5800669 Longitude: -79.7667152 View on Google Maps

MouseOver for Detail Forecast
Overnight Saturday Sunday Monday Tuesday Wednesday Thursday Friday
Mostly Cloudy on Overnight 70% chance of rain & snow on Saturday 50% chance of snow on Sunday Mostly Cloudy on Monday Partly Sunny on Tuesday Mostly Cloudy on Wednesday 70% chance of rain on Thursday Partly Sunny on Friday
Low: 19°F High: 34°F High: 21°F High: 23°F High: 33°F High: 43°F High: 51°F High: 40°F
Low: 13°F Low: 14°F Low: 12°F Low: 24°F Low: 35°F Low: 29°F  
Mostly Cloudy Rain & Snow Snow Mostly Cloudy Partly Sunny Mostly Cloudy Rain Partly Sunny
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Current Conditions at
BUTLER COUNTY - (KBTP)
25°
Cloudy
as of 2:26 AM EST
Rel. Humidity: 85%
Dew Point: 21°F
Visibility: 10 Miles
Pressure: 30.01 in.
Flight Rule: MVFR
Wind Data
5 MPH
180° South
Cloud Level(s): Solid Overcast at 2800ft
Current Conditions at
ALLEGHENY COUNTY ARPT - (KAGC)
23°
Cloudy
as of 1:53 AM EST
Rel. Humidity: 79%
Dew Point: 18°F
Visibility: 9 Miles
Pressure: 30.00 in.
Flight Rule: MVFR
Wind Data
7 MPH
170° South
Cloud Level(s): Solid Overcast at 2500ft
Current Conditions at
PITTSBURGH - (KPIT)
25°
Cloudy
as of 1:51 AM EST
Rel. Humidity: 73%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 30.00 in.
Flight Rule: MVFR
Wind Data
3 MPH
180° South
Cloud Level(s): Solid Overcast at 2500ft
Current Conditions at
LATROBE - (KLBE)
23°
Cloudy
as of 2:35 AM EST
Rel. Humidity: 92%
Dew Point: 21°F
Visibility: 10 Miles
Pressure: 30.04 in.
Flight Rule: MVFR
Wind Data
Calm
Cloud Level(s): Solid Overcast at 2500ft
Mostly Cloudy on Overnight Overnight... Mostly cloudy, with a low around 19. Light southwest wind.
70% chance of rain & snow Saturday Saturday... A slight chance of snow before noon, then a chance of rain and snow between noon and 4pm, then snow likely after 4pm. Cloudy, with a high near 34. Southwest wind 7 to 13 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
90% chance of snow Saturday Night Saturday Night... Snow, mainly before 3am. Low around 13. West wind 6 to 8 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
50% chance of snow Sunday Sunday... A chance of snow before 1pm, then a chance of snow showers after 1pm. Mostly cloudy, with a high near 21. West wind 10 to 15 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
60% chance of snow Sunday Night Sunday Night... Snow showers likely, mainly before 1am. Mostly cloudy, with a low around 14. West wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Mostly Cloudy on Monday Monday... Mostly cloudy, with a high near 23.
Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 12.
Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 33.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 24.
Mostly Cloudy on Wednesday Wednesday... Mostly cloudy, with a high near 43.
30% chance of rain Wednesday Night Wednesday Night... A chance of rain. Mostly cloudy, with a low around 35. Chance of precipitation is 30%.
70% chance of rain Thursday Thursday... Rain likely. Mostly cloudy, with a high near 51. Chance of precipitation is 70%.
50% chance of rain Thursday Night Thursday Night... A chance of rain. Mostly cloudy, with a low around 29. Chance of precipitation is 50%.
Partly Sunny on Friday Friday... Partly sunny, with a high near 40.
Current Radar Image


Sun Almanac for Arnold, Pennsylvania
Sunrise: 07:34 AM
Sunset: 4:52 PM
Civil Sunrise:07:04 AM
Civil Sunset: 5:23 PM
Nautical Sunrise: 06:29 AM
Nautical Sunset: 5:58 PM
Astro Sunrise: 05:56 AM
Astro Sunset: 6:31 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.