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Arnold, Pennsylvania Weather Forecast
Arnold, Pennsylvania Weather
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Weather Forecast for Arnold, Pennsylvania : Westmoreland County
Issued: 5:43 pm EST Nov 16, 2025 Latitude: 40.5800669 Longitude: -79.7667152 View on Google Maps

MouseOver for Detail Forecast
Tonight Monday Tuesday Wednesday Thursday Friday Saturday Sunday
Mostly Cloudy on Tonight Partly Sunny on Monday 60% chance of rain & snow on Tuesday Partly Sunny on Wednesday 30% chance of rain on Thursday 80% chance of rain on Friday 40% chance of rain on Saturday Partly Sunny on Sunday
Low: 32°F High: 44°F High: 43°F High: 53°F High: 58°F High: 63°F High: 56°F High: 54°F
Low: 25°F Low: 31°F Low: 39°F Low: 45°F Low: 44°F Low: 39°F  
Mostly Cloudy Partly Sunny Rain & Snow Partly Sunny Rain Rain Rain Partly Sunny
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Current Conditions at
BUTLER COUNTY - (KBTP)
37°
Feels like 30°F
Cloudy
as of 7:56 PM EST
Rel. Humidity: 64%
Dew Point: 27°F
Visibility: 10 Miles
Pressure: 29.76 in.
Flight Rule: VFR
Wind Data
9 MPH
270° West
Cloud Level(s): Solid Overcast at 6500ft
Current Conditions at
ALLEGHENY COUNTY ARPT - (KAGC)
39°
Feels like 33°F
Cloudy
as of 7:53 PM EST
Rel. Humidity: 51%
Dew Point: 23°F
Visibility: 10 Miles
Pressure: 29.76 in.
Flight Rule: VFR
Wind Data
9 MPH
300° Northwest
Cloud Level(s): Solid Overcast at 6500ft
Current Conditions at
PITTSBURGH - (KPIT)
37°
Mostly Cloudy
as of 7:51 PM EST
Rel. Humidity: 60%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 29.77 in.
Flight Rule: VFR
Wind Data
7 MPH
270° West
Cloud Level(s): Broken at 6500ft
Mostly Cloudy on Tonight Tonight... Mostly cloudy, with a low around 32. West wind 10 to 15 mph, with gusts as high as 29 mph.

Partly Sunny on Monday Monday... Partly sunny, with a high near 44. West wind 11 to 16 mph.

Mostly Clear on Monday Night Monday Night... Mostly clear, with a low around 25. West wind around 6 mph becoming calm in the evening.

60% chance of rain & snow Tuesday Tuesday... A chance of rain and snow before 10am, then rain likely. Mostly cloudy, with a high near 43. Light and variable wind. Chance of precipitation is 60%. Little or no snow accumulation expected.

60% chance of rain Tuesday Night Tuesday Night... Rain likely, mainly before 1am. Mostly cloudy, with a low around 31. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 53.

30% chance of rain Wednesday Night Wednesday Night... A chance of rain after 1am. Mostly cloudy, with a low around 39. Chance of precipitation is 30%.

30% chance of rain Thursday Thursday... A chance of rain after 1pm. Mostly cloudy, with a high near 58. Chance of precipitation is 30%.

80% chance of rain Thursday Night Thursday Night... Rain, mainly after 1am. Low around 45. Chance of precipitation is 80%.

80% chance of rain Friday Friday... Rain. High near 63. Chance of precipitation is 80%.

60% chance of rain Friday Night Friday Night... Rain likely. Mostly cloudy, with a low around 44. Chance of precipitation is 60%.

40% chance of rain Saturday Saturday... A chance of rain. Mostly cloudy, with a high near 56. Chance of precipitation is 40%.

30% chance of rain Saturday Night Saturday Night... A chance of rain. Mostly cloudy, with a low around 39. Chance of precipitation is 30%.

Partly Sunny on Sunday Sunday... Partly sunny, with a high near 54.

Sun Almanac for Arnold, Pennsylvania
Sunrise: 07:07 AM
Sunset: 5:00 PM
Civil Sunrise:06:38 AM
Civil Sunset: 5:30 PM
Nautical Sunrise: 06:05 AM
Nautical Sunset: 6:03 PM
Astro Sunrise: 05:33 AM
Astro Sunset: 6:35 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.