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Arnold, Pennsylvania Weather Forecast
Arnold, Pennsylvania Weather
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Weather Forecast for Arnold, Pennsylvania : Westmoreland County
Issued: 2:23 pm EST Jan 8, 2026 Latitude: 40.5800669 Longitude: -79.7667152 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Friday Saturday Sunday Monday Tuesday Wednesday
Mostly Sunny on This Afternoon Partly Cloudy on Tonight 80% chance of rain on Friday 90% chance of rain on Saturday 70% chance of snow on Sunday Partly Sunny on Monday Mostly Sunny on Tuesday 60% chance of rain on Wednesday
High: 54°F Low: 44°F High: 62°F High: 52°F High: 37°F High: 38°F High: 44°F High: 42°F
Low: 39°F Low: 32°F Low: 24°F Low: 28°F Low: 32°F  
Mostly Sunny Partly Cloudy Rain Rain Snow Partly Sunny Mostly Sunny Rain
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Current Conditions at
BUTLER COUNTY - (KBTP)
Mostly Cloudy
as of 2:56 PM EST
Wind Data
Calm
Current Conditions at
ALLEGHENY COUNTY ARPT - (KAGC)
55°
Clear
as of 2:53 PM EST
Rel. Humidity: 43%
Dew Point: 34°F
Visibility: 10 Miles
Pressure: 30.09 in.
Flight Rule: VFR
Wind Data
5 MPH
150° Southeast
Cloud Level(s): Clear
Current Conditions at
PITTSBURGH - (KPIT)
55°
Cloudy
as of 2:51 PM EST
Rel. Humidity: 43%
Dew Point: 34°F
Visibility: 10 Miles
Pressure: 30.08 in.
Flight Rule: VFR
Wind Data
8 MPH
150° Southeast
Cloud Level(s): Scattered at 14000ft, Solid Overcast at 25000ft
Current Conditions at
LATROBE - (KLBE)
57°
Clear
as of 2:53 PM EST
Rel. Humidity: 47%
Dew Point: 37°F
Visibility: 10 Miles
Pressure: 30.12 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Mostly Sunny on This Afternoon This Afternoon... Mostly sunny, with a high near 54. Southeast wind around 5 mph.
Partly Cloudy on Tonight Tonight... Cloudy, then gradually becoming partly cloudy, with a low around 44. East wind 5 to 9 mph.
80% chance of rain Friday Friday... Rain, mainly after 8am. High near 62. Southwest wind 10 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
30% chance of rain Friday Night Friday Night... A chance of rain, mainly before 1am. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 39. West wind 5 to 9 mph becoming calm in the evening. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
90% chance of rain Saturday Saturday... Rain. High near 52. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
70% chance of rain & snow Saturday Night Saturday Night... Rain showers likely before 1am, then a slight chance of rain and snow showers between 1am and 4am, then a slight chance of snow showers after 4am. Mostly cloudy, with a low around 32. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
70% chance of snow Sunday Sunday... Snow showers likely. Mostly cloudy, with a high near 37. Chance of precipitation is 70%.
30% chance of snow Sunday Night Sunday Night... A chance of snow showers before 1am. Mostly cloudy, with a low around 24. Chance of precipitation is 30%.
Partly Sunny on Monday Monday... Partly sunny, with a high near 38.
Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 28.
Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 44.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 32.
60% chance of rain Wednesday Wednesday... Showers likely. Mostly cloudy, with a high near 42. Chance of precipitation is 60%.
Current Radar Image


Sun Almanac for Arnold, Pennsylvania
Sunrise: 07:43 AM
Sunset: 5:09 PM
Civil Sunrise:07:12 AM
Civil Sunset: 5:40 PM
Nautical Sunrise: 06:38 AM
Nautical Sunset: 6:14 PM
Astro Sunrise: 06:05 AM
Astro Sunset: 6:47 PM
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