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Arnold, Pennsylvania Weather Forecast
Arnold, Pennsylvania Weather
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Weather Forecast for Arnold, Pennsylvania : Westmoreland County
Issued: 12:28 pm EST Jan 6, 2026 Latitude: 40.5800669 Longitude: -79.7667152 View on Google Maps

MouseOver for Detail Forecast
Tonight Wednesday Thursday Friday Saturday Sunday Monday Tuesday
50% chance of light rain on Tonight 30% chance of rain on Wednesday Partly Sunny on Thursday 90% chance of rain on Friday 80% chance of rain on Saturday 40% chance of snow on Sunday Mostly Sunny on Monday Mostly Sunny on Tuesday
Low: 38°F High: 45°F High: 54°F High: 61°F High: 59°F High: 40°F High: 39°F High: 43°F
Low: 33°F Low: 44°F Low: 47°F Low: 33°F Low: 24°F Low: 28°F  
Light Rain Rain Partly Sunny Rain Rain Snow Mostly Sunny Mostly Sunny
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Current Conditions at
BUTLER COUNTY - (KBTP)
Mostly Clear
as of 8:56 PM EST
Wind Data
Calm
Current Conditions at
ALLEGHENY COUNTY ARPT - (KAGC)
50°
Feels like 44°F
Cloudy
as of 9:09 PM EST
Rel. Humidity: 87%
Dew Point: 46°F
Visibility: 8 Miles
Pressure: 29.61 in.
Flight Rule: VFR
Wind Data
15 MPH
Gust: 22 MPH
230° Southwest
Cloud Level(s): Scattered at 1700ft, Broken at 5000ft, Solid Overcast at 5500ft
Current Conditions at
PITTSBURGH - (KPIT)
50°
Feels like 45°F
Cloudy
Light Rain
as of 8:51 PM EST
Rel. Humidity: 87%
Dew Point: 46°F
Visibility: 10 Miles
Pressure: 29.62 in.
Flight Rule: MVFR
Wind Data
10 MPH
250° West
Cloud Level(s): Scattered at 1200ft, Broken at 2700ft, Solid Overcast at 3800ft
Current Conditions at
LATROBE - (KLBE)
50°
Feels like 45°F
Cloudy
Mist
as of 8:47 PM EST
Rel. Humidity: 93%
Dew Point: 48°F
Visibility: 8 Miles
Pressure: 29.64 in.
Flight Rule: MVFR
Wind Data
10 MPH
220° Southwest
Cloud Level(s): Broken at 2100ft, Solid Overcast at 3000ft
50% chance of light rain Tonight Tonight... A chance of light rain before 1am, then a chance of rain after 5am. Cloudy, with a low around 38. West wind 9 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
30% chance of rain Wednesday Wednesday... A chance of rain, mainly before 7am. Cloudy, with a high near 45. West wind 6 to 9 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Patchy Fog on Wednesday Night Wednesday Night... Patchy fog between 8pm and 11pm. Otherwise, mostly cloudy, with a low around 33. Calm wind.
Partly Sunny on Thursday Thursday... Partly sunny, with a high near 54. Calm wind becoming southeast around 6 mph in the afternoon.
70% chance of rain Thursday Night Thursday Night... Rain likely, mainly after 1am. Mostly cloudy, with a low around 44. Southeast wind around 7 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
90% chance of rain Friday Friday... Rain. High near 61. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
80% chance of rain Friday Night Friday Night... Rain, mainly after 1am. Low around 47. Chance of precipitation is 80%.
80% chance of rain Saturday Saturday... Rain. High near 59. Chance of precipitation is 80%.
40% chance of rain Saturday Night Saturday Night... A chance of rain before 1am. Mostly cloudy, with a low around 33. Chance of precipitation is 40%.
40% chance of snow Sunday Sunday... A chance of snow. Mostly cloudy, with a high near 40. Chance of precipitation is 40%.
Mostly Cloudy on Sunday Night Sunday Night... Mostly cloudy, with a low around 24.
Mostly Sunny on Monday Monday... Mostly sunny, with a high near 39.
Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 28.
Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 43.
Current Radar Image


Sun Almanac for Arnold, Pennsylvania
Sunrise: 07:43 AM
Sunset: 5:07 PM
Civil Sunrise:07:12 AM
Civil Sunset: 5:38 PM
Nautical Sunrise: 06:38 AM
Nautical Sunset: 6:12 PM
Astro Sunrise: 06:05 AM
Astro Sunset: 6:45 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.