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Arnold, Pennsylvania Weather Forecast
Arnold, Pennsylvania Weather
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Weather Forecast for Arnold, Pennsylvania : Westmoreland County
Issued: 3:38 pm EST Dec 4, 2025 Latitude: 40.5800669 Longitude: -79.7667152 View on Google Maps

MouseOver for Detail Forecast
Tonight Friday Saturday Sunday Monday Tuesday Wednesday Thursday
Cloudy on Tonight Increasing Clouds on Friday Mostly Cloudy on Saturday 30% chance of rain & snow on Sunday Mostly Sunny on Monday 60% chance of snow on Tuesday 60% chance of rain & snow on Wednesday 60% chance of snow on Thursday
Low: 11°F High: 34°F High: 38°F High: 37°F High: 29°F High: 36°F High: 40°F High: 33°F
Low: 21°F Low: 26°F Low: 20°F Low: 12°F Low: 27°F Low: 25°F  
Cloudy Increasing Clouds Mostly Cloudy Rain & Snow Mostly Sunny Snow Rain & Snow Snow
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Current Conditions at
BUTLER COUNTY - (KBTP)
21°
Clear
as of 4:56 PM EST
Rel. Humidity: 62%
Dew Point: 10°F
Visibility: 10 Miles
Pressure: 30.24 in.
Flight Rule: VFR
Wind Data
7 MPH
330° Northwest
Cloud Level(s): Clear
Current Conditions at
ALLEGHENY COUNTY ARPT - (KAGC)
25°
Clear
as of 4:53 PM EST
Rel. Humidity: 62%
Dew Point: 14°F
Visibility: 10 Miles
Pressure: 30.22 in.
Flight Rule: VFR
Wind Data
6 MPH
350° North
Cloud Level(s): Clear
Current Conditions at
PITTSBURGH - (KPIT)
27°
Feels like 16°F
Mostly Cloudy
as of 4:51 PM EST
Rel. Humidity: 58%
Dew Point: 14°F
Visibility: 10 Miles
Pressure: 30.23 in.
Flight Rule: VFR
Wind Data
12 MPH
0° North
Cloud Level(s): Few at 4500ft, Broken at 25000ft
Current Conditions at
LATROBE - (KLBE)
27°
Feels like 16°F
Clear
as of 4:55 PM EST
Rel. Humidity: 68%
Dew Point: 18°F
Visibility: 10 Miles
Pressure: 30.24 in.
Flight Rule: VFR
Wind Data
12 MPH
310° Northwest
Cloud Level(s): Clear
Cloudy on Tonight Tonight... Partly cloudy, with a low around 11. North wind around 6 mph becoming calm in the evening.

Increasing Clouds on Friday Friday... Increasing clouds, with a high near 34. Calm wind becoming south around 5 mph.

Mostly Cloudy on Friday Night Friday Night... Mostly cloudy, with a low around 21. Light southwest wind.

Mostly Cloudy on Saturday Saturday... Mostly cloudy, with a high near 38. South wind 5 to 9 mph.

20% chance of snow Saturday Night Saturday Night... A slight chance of snow. Mostly cloudy, with a low around 26. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

30% chance of rain & snow Sunday Sunday... A chance of rain and snow after 1pm. Cloudy, with a high near 37. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

30% chance of rain & snow Sunday Night Sunday Night... A chance of rain and snow before 1am. Mostly cloudy, with a low around 20. Chance of precipitation is 30%.

Mostly Sunny on Monday Monday... Mostly sunny, with a high near 29.

Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 12.

60% chance of snow Tuesday Tuesday... Snow likely, mainly after 1pm. Mostly cloudy, with a high near 36. Chance of precipitation is 60%.

50% chance of snow Tuesday Night Tuesday Night... A chance of snow. Cloudy, with a low around 27. Chance of precipitation is 50%.

60% chance of rain & snow Wednesday Wednesday... Rain and snow likely. Cloudy, with a high near 40. Chance of precipitation is 60%.

80% chance of rain & snow Wednesday Night Wednesday Night... Rain and snow. Low around 25. Chance of precipitation is 80%.

60% chance of snow Thursday Thursday... Snow likely. Mostly cloudy, with a high near 33. Chance of precipitation is 60%.

Current Radar Image


Sun Almanac for Arnold, Pennsylvania
Sunrise: 07:27 AM
Sunset: 4:52 PM
Civil Sunrise:06:56 AM
Civil Sunset: 5:23 PM
Nautical Sunrise: 06:22 AM
Nautical Sunset: 5:57 PM
Astro Sunrise: 05:49 AM
Astro Sunset: 6:30 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.