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Arnold, Pennsylvania Weather Forecast
Arnold, Pennsylvania Weather
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Weather Forecast for Arnold, Pennsylvania : Westmoreland County
Issued: 5:48 pm EST Nov 15, 2025 Latitude: 40.5800669 Longitude: -79.7667152 View on Google Maps

MouseOver for Detail Forecast
Tonight Sunday Monday Tuesday Wednesday Thursday Friday Saturday
90% chance of thunderstorms on Tonight 20% chance of rain on Sunday Partly Sunny on Monday 50% chance of rain on Tuesday 30% chance of rain on Wednesday 30% chance of rain on Thursday 70% chance of rain on Friday 50% chance of rain on Saturday
Low: 39°F High: 47°F High: 44°F High: 42°F High: 50°F High: 57°F High: 61°F High: 57°F
Low: 31°F Low: 25°F Low: 31°F Low: 34°F Low: 42°F Low: 44°F  
Thunderstorms Rain Partly Sunny Rain Rain Rain Rain Rain
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Current Conditions at
BUTLER COUNTY - (KBTP)
63°
Cloudy
as of 6:56 PM EST
Rel. Humidity: 72%
Dew Point: 54°F
Visibility: 10 Miles
Pressure: 29.45 in.
Flight Rule: MVFR
Wind Data
12 MPH
230° Southwest
Cloud Level(s): Broken at 3000ft, Solid Overcast at 4900ft
Current Conditions at
ALLEGHENY COUNTY ARPT - (KAGC)
64°
Cloudy
as of 6:53 PM EST
Rel. Humidity: 67%
Dew Point: 54°F
Visibility: 10 Miles
Pressure: 29.47 in.
Flight Rule: VFR
Wind Data
14 MPH
240° Southwest
Cloud Level(s): Broken at 3900ft, Broken at 5000ft, Solid Overcast at 6000ft
Current Conditions at
PITTSBURGH - (KPIT)
64°
Mostly Cloudy
Light Rain
as of 6:51 PM EST
Rel. Humidity: 67%
Dew Point: 54°F
Visibility: 10 Miles
Pressure: 29.46 in.
Flight Rule: VFR
Wind Data
15 MPH
Gust: 31 MPH
240° Southwest
Cloud Level(s): Scattered at 3800ft, Broken at 6000ft, Broken at 10000ft
Current Conditions at
LATROBE - (KLBE)
64°
Cloudy
as of 6:50 PM EST
Rel. Humidity: 72%
Dew Point: 55°F
Visibility: 10 Miles
Pressure: 29.50 in.
Flight Rule: VFR
Wind Data
18 MPH
220° Southwest
Cloud Level(s): Broken at 3700ft, Solid Overcast at 4500ft
90% chance of thunderstorms Tonight Tonight... Showers and thunderstorms before 4am, then a chance of rain between 4am and 5am. Low around 39. Southwest wind 10 to 14 mph becoming northwest after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
20% chance of rain Sunday Sunday... A chance of sprinkles with a slight chance of showers before 8am, then a chance of sprinkles after 1pm. Mostly cloudy, with a high near 47. Breezy, with a west wind 14 to 21 mph, with gusts as high as 34 mph. Chance of precipitation is 20%.
20% chance of rain & snow Sunday Night Sunday Night... A slight chance of rain and snow showers before 7pm, then a slight chance of snow showers. Mostly cloudy, with a low around 31. West wind 10 to 14 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.
Partly Sunny on Monday Monday... Partly sunny, with a high near 44. West wind 11 to 16 mph.
Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 25. West wind 5 to 7 mph becoming calm in the evening.
50% chance of rain Tuesday Tuesday... A chance of rain. Mostly cloudy, with a high near 42. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
60% chance of rain Tuesday Night Tuesday Night... Rain likely, mainly before 1am. Mostly cloudy, with a low around 31. Chance of precipitation is 60%.
30% chance of rain Wednesday Wednesday... A chance of rain. Partly sunny, with a high near 50. Chance of precipitation is 30%.
40% chance of rain & snow Wednesday Night Wednesday Night... A chance of rain before 1am, then a chance of snow. Mostly cloudy, with a low around 34. Chance of precipitation is 40%.
30% chance of rain Thursday Thursday... A chance of rain after 1pm. Mostly cloudy, with a high near 57. Chance of precipitation is 30%.
60% chance of rain Thursday Night Thursday Night... Rain likely. Mostly cloudy, with a low around 42. Chance of precipitation is 60%.
70% chance of rain Friday Friday... Rain likely. Mostly cloudy, with a high near 61. Chance of precipitation is 70%.
70% chance of rain Friday Night Friday Night... Showers likely. Mostly cloudy, with a low around 44. Chance of precipitation is 70%.
50% chance of rain Saturday Saturday... A chance of showers. Mostly cloudy, with a high near 57. Chance of precipitation is 50%.
Current Radar Image


Sun Almanac for Arnold, Pennsylvania
Sunrise: 07:06 AM
Sunset: 5:01 PM
Civil Sunrise:06:37 AM
Civil Sunset: 5:31 PM
Nautical Sunrise: 06:04 AM
Nautical Sunset: 6:04 PM
Astro Sunrise: 05:32 AM
Astro Sunset: 6:36 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.