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Arnold, Pennsylvania Weather Forecast
Arnold, Pennsylvania Weather
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Weather Forecast for Arnold, Pennsylvania : Westmoreland County
Issued: 3:37 pm EST Nov 5, 2025 Latitude: 40.5800669 Longitude: -79.7667152 View on Google Maps

MouseOver for Detail Forecast
Tonight Thursday Friday Saturday Sunday Monday Veterans Day Wednesday
40% chance of rain on Tonight Sunny on Thursday 80% chance of rain on Friday 20% chance of on Saturday 80% chance of rain on Sunday 50% chance of snow on Monday 30% chance of snow on Veterans Day Partly Sunny on Wednesday
Low: 37°F High: 54°F High: 64°F High: 61°F High: 53°F High: 39°F High: 41°F High: 50°F
Low: 34°F Low: 46°F Low: 42°F Low: 27°F Low: 24°F Low: 30°F  
Rain Sunny Rain Partly Sunny Rain Snow Snow Partly Sunny
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Current Conditions at
ALLEGHENY COUNTY ARPT - (KAGC)
63°
Cloudy
as of 5:53 PM EST
Rel. Humidity: 55%
Dew Point: 46°F
Visibility: 10 Miles
Pressure: 29.80 in.
Flight Rule: VFR
Wind Data
12 MPH
Gust: 36 MPH
270° West
Cloud Level(s): Broken at 4500ft, Solid Overcast at 5500ft
Current Conditions at
PITTSBURGH - (KPIT)
63°
Cloudy
as of 5:51 PM EST
Rel. Humidity: 55%
Dew Point: 46°F
Visibility: 10 Miles
Pressure: 29.81 in.
Flight Rule: VFR
Wind Data
13 MPH
Gust: 23 MPH
260° West
Cloud Level(s): Broken at 4600ft, Broken at 6500ft, Solid Overcast at 8500ft
40% chance of rain Tonight Tonight... A chance of showers, mainly before 8pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 37. Northwest wind 9 to 18 mph, with gusts as high as 32 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Sunny on Thursday Thursday... Sunny, with a high near 54. West wind 6 to 10 mph.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 34. Calm wind becoming southeast around 5 mph after midnight.
80% chance of rain Friday Friday... Showers after 1pm. High near 64. Southwest wind 7 to 17 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
90% chance of thunderstorms Friday Night Friday Night... Showers before 10pm, then showers and possibly a thunderstorm between 10pm and 1am, then a chance of showers after 1am. Low around 46. Southwest wind 6 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
20% chance of Saturday Saturday... A slight chance of showers after 1pm. Partly sunny, with a high near 61. Chance of precipitation is 20%.
70% chance of rain Saturday Night Saturday Night... Showers likely after 1am. Mostly cloudy, with a low around 42. Chance of precipitation is 70%.
80% chance of rain Sunday Sunday... Showers. High near 53. Chance of precipitation is 80%.
60% chance of rain & snow Sunday Night Sunday Night... A chance of rain and snow showers before 1am, then snow showers likely. Mostly cloudy, with a low around 27. Chance of precipitation is 60%.
50% chance of snow Monday Monday... A chance of snow showers. Partly sunny, with a high near 39. Chance of precipitation is 50%.
50% chance of snow Monday Night Monday Night... A chance of snow showers. Mostly cloudy, with a low around 24. Chance of precipitation is 50%.
30% chance of snow Veterans Day Veterans Day... A chance of snow showers. Partly sunny, with a high near 41. Chance of precipitation is 30%.
Mostly Cloudy on Tuesday Night Tuesday Night... Mostly cloudy, with a low around 30.
Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 50.
Sun Almanac for Arnold, Pennsylvania
Sunrise: 06:54 AM
Sunset: 5:11 PM
Civil Sunrise:06:26 AM
Civil Sunset: 5:39 PM
Nautical Sunrise: 05:53 AM
Nautical Sunset: 6:12 PM
Astro Sunrise: 05:21 AM
Astro Sunset: 6:44 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.