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Arnold, Pennsylvania Weather Forecast
Arnold, Pennsylvania Weather
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Weather Forecast for Arnold, Pennsylvania : Westmoreland County
Issued: 11:58 am EST Jan 24, 2026 Latitude: 40.5800669 Longitude: -79.7667152 View on Google Maps

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This Afternoon Tonight Sunday Monday Tuesday Wednesday Thursday Friday
Increasing Clouds on This Afternoon 70% chance of snow on Tonight 100% chance of snow on Sunday 60% chance of snow on Monday Partly Sunny on Tuesday 30% chance of snow on Wednesday 30% chance of snow on Thursday Mostly Cloudy on Friday
High: 16°F Low: 13°F High: 26°F High: 21°F High: 17°F High: 18°F High: 16°F High: 17°F
Low: 15°F Low: 0 °F Low: 2°F Low: 3 °F Low: 1°F  
Increasing Clouds Snow Snow Snow Partly Sunny Snow Snow Mostly Cloudy
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Current Conditions at
BUTLER COUNTY - (KBTP)
5°
Clear
as of 11:56 AM EST
Rel. Humidity: 54%
Dew Point: -8°F
Visibility: 10 Miles
Pressure: 30.64 in.
Flight Rule: VFR
Wind Data
3 MPH
Cloud Level(s): Clear
Current Conditions at
ALLEGHENY COUNTY ARPT - (KAGC)
7°
Clear
as of 11:53 AM EST
Rel. Humidity: 46%
Dew Point: -9°F
Visibility: 10 Miles
Pressure: 30.63 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
PITTSBURGH - (KPIT)
7°
Cloudy
as of 11:51 AM EST
Rel. Humidity: 46%
Dew Point: -9°F
Visibility: 10 Miles
Pressure: 30.63 in.
Flight Rule: VFR
Wind Data
5 MPH
140° Southeast
Cloud Level(s): Broken at 10000ft, Broken at 14000ft, Solid Overcast at 25000ft
Current Conditions at
LATROBE - (KLBE)
7°
Clear
as of 11:47 AM EST
Rel. Humidity: 55%
Dew Point: -6°F
Visibility: 10 Miles
Pressure: 30.66 in.
Flight Rule: VFR
Wind Data
6 MPH
270° West
Cloud Level(s): Clear
Increasing Clouds on This Afternoon This Afternoon... Increasing clouds, with a high near 16. Calm wind becoming northeast around 5 mph.
70% chance of snow Tonight Tonight... Snow likely, mainly after 4am. Cloudy, with a low around 13. East wind 5 to 8 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.
100% chance of snow Sunday Sunday... Snow. The snow could be heavy at times. High near 26. East wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New snow accumulation of 7 to 11 inches possible.
100% chance of snow Sunday Night Sunday Night... Snow. Low around 15. East wind 5 to 8 mph becoming west after midnight. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
60% chance of snow Monday Monday... Snow likely before 11am, then snow showers likely, mainly between 11am and 1pm. Mostly cloudy, with a high near 21. West wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
20% chance of snow Monday Night Monday Night... A slight chance of snow showers before 1am. Mostly cloudy, with a low around 0. Chance of precipitation is 20%.
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 2.
30% chance of snow Wednesday Wednesday... A chance of snow showers after 1pm. Mostly cloudy, with a high near 18. Chance of precipitation is 30%.
40% chance of snow Wednesday Night Wednesday Night... A chance of snow showers. Mostly cloudy, with a low around 3. Chance of precipitation is 40%.
30% chance of snow Thursday Thursday... A chance of snow showers. Mostly cloudy, with a high near 16. Chance of precipitation is 30%.
Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 1.
Mostly Cloudy on Friday Friday... Mostly cloudy, with a high near 17.
Current Radar Image


Sun Almanac for Arnold, Pennsylvania
Sunrise: 07:35 AM
Sunset: 5:27 PM
Civil Sunrise:07:06 AM
Civil Sunset: 5:57 PM
Nautical Sunrise: 06:33 AM
Nautical Sunset: 6:30 PM
Astro Sunrise: 06:00 AM
Astro Sunset: 7:02 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.