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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 am EST Dec 28, 2025 Latitude: 40.5800669 Longitude: -79.7667152 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Monday Tuesday Wednesday New Year's Day Friday Saturday
90% chance of rain on Today 90% chance of rain on Tonight 70% chance of rain & snow on Monday 40% chance of snow on Tuesday 50% chance of snow on Wednesday 50% chance of snow on New Year's Day Mostly Sunny on Friday 30% chance of rain on Saturday
High: 59°F Low: 41°F High: 29 °F High: 29°F High: 34°F High: 29°F High: 28°F High: 37°F
Low: 20°F Low: 20°F Low: 20°F Low: 13°F Low: 16°F  
Rain Rain Rain & Snow Snow Snow Snow Mostly Sunny Rain
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Current Conditions at
BUTLER COUNTY - (KBTP)
Cloudy
as of 6:56 AM EST
Wind Data
Calm
Current Conditions at
ALLEGHENY COUNTY ARPT - (KAGC)
36°
Mostly Clear
Mist
as of 6:53 AM EST
Rel. Humidity: 93%
Dew Point: 34°F
Visibility: 6 Miles
Pressure: 29.96 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Few at 3700ft
Current Conditions at
PITTSBURGH - (KPIT)
36°
Cloudy
Mist
as of 6:51 AM EST
Rel. Humidity: 93%
Dew Point: 34°F
Visibility: 6 Miles
Pressure: 29.96 in.
Flight Rule: VFR
Wind Data
6 MPH
100° East
Cloud Level(s): Few at 200ft, Scattered at 2800ft, Solid Overcast at 13000ft
Current Conditions at
LATROBE - (KLBE)
34°
Mostly Cloudy
as of 6:47 AM EST
Rel. Humidity: 100%
Dew Point: 34°F
Visibility: 7 Miles
Pressure: 30.00 in.
Flight Rule: MVFR
Wind Data
Calm
Cloud Level(s): Broken at 2500ft
90% chance of rain Today Today... Rain, mainly before 4pm. Areas of fog before 11am. High near 59. Calm wind becoming south 5 to 8 mph in the morning. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
90% chance of rain Tonight Tonight... Rain, mainly after 2am. Low around 41. Southwest wind 10 to 17 mph, with gusts as high as 36 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
70% chance of rain & snow Monday Monday... A chance of rain before 10am, then snow showers likely. Mostly cloudy, with a temperature falling to around 29 by 5pm. Breezy, with a west wind 18 to 25 mph, with gusts as high as 46 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
90% chance of snow Monday Night Monday Night... Snow showers. Low around 20. Breezy, with a west wind 20 to 22 mph, with gusts as high as 45 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
40% chance of snow Tuesday Tuesday... Scattered snow showers before 1pm. Mostly cloudy, with a high near 29. Breezy, with a west wind 16 to 20 mph, with gusts as high as 34 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.
30% chance of snow Tuesday Night Tuesday Night... Scattered snow showers after 1am. Mostly cloudy, with a low around 20. Chance of precipitation is 30%.
50% chance of snow Wednesday Wednesday... Scattered snow showers. Mostly cloudy, with a high near 34. Chance of precipitation is 50%.
70% chance of snow Wednesday Night Wednesday Night... Snow likely. Mostly cloudy, with a low around 20. Chance of precipitation is 70%.
50% chance of snow New Year's Day New Year's Day... A chance of snow. Mostly cloudy, with a high near 29. Chance of precipitation is 50%.
Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 13.
Mostly Sunny on Friday Friday... Mostly sunny, with a high near 28.
Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 16.
30% chance of rain Saturday Saturday... A chance of rain. Partly sunny, with a high near 37. Chance of precipitation is 30%.
Current Radar Image


Sun Almanac for Arnold, Pennsylvania
Sunrise: 07:42 AM
Sunset: 5:00 PM
Civil Sunrise:07:11 AM
Civil Sunset: 5:30 PM
Nautical Sunrise: 06:37 AM
Nautical Sunset: 6:05 PM
Astro Sunrise: 06:04 AM
Astro Sunset: 6:38 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.