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Arnold, Pennsylvania Weather Forecast
Arnold, Pennsylvania Weather
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Weather Forecast for Arnold, Pennsylvania : Westmoreland County
Issued: 11:38 am EST Nov 22, 2025 Latitude: 40.5800669 Longitude: -79.7667152 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Sunday Monday Tuesday Wednesday Thanksgiving Day Friday
Partly Sunny on This Afternoon Morning Fog on Tonight Mostly Cloudy on Sunday Mostly Sunny on Monday 90% chance of rain on Tuesday 60% chance of rain on Wednesday Partly Sunny on Thanksgiving Day Mostly Cloudy on Friday
High: 52°F Low: 30°F High: 52°F High: 52°F High: 55°F High: 58°F High: 42°F High: 39°F
Low: 28°F Low: 37°F Low: 46°F Low: 30°F Low: 25°F  
Partly Sunny Morning Fog Mostly Cloudy Mostly Sunny Rain Rain Partly Sunny Mostly Cloudy
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Current Conditions at
BUTLER COUNTY - (KBTP)
46°
Feels like 41°F
Partly Cloudy
as of 11:37 AM EST
Rel. Humidity: 65%
Dew Point: 36°F
Visibility: 10 Miles
Pressure: 29.98 in.
Flight Rule: VFR
Wind Data
9 MPH
300° Northwest
Cloud Level(s): Scattered at 2600ft
Current Conditions at
ALLEGHENY COUNTY ARPT - (KAGC)
45°
Mostly Cloudy
as of 11:14 AM EST
Rel. Humidity: 81%
Dew Point: 39°F
Visibility: 7 Miles
Pressure: 29.97 in.
Flight Rule: MVFR
Wind Data
6 MPH
340° North
Cloud Level(s): Broken at 1600ft
Current Conditions at
PITTSBURGH - (KPIT)
45°
Feels like 38°F
Mostly Cloudy
as of 10:51 AM EST
Rel. Humidity: 75%
Dew Point: 37°F
Visibility: 10 Miles
Pressure: 29.99 in.
Flight Rule: MVFR
Wind Data
12 MPH
340° North
Cloud Level(s): Few at 900ft, Scattered at 1300ft, Broken at 2500ft
Partly Sunny on This Afternoon This Afternoon... Partly sunny, with a high near 52. Northwest wind around 6 mph.
Morning Fog on Tonight Tonight... Patchy fog between 8pm and 4am. Otherwise, mostly cloudy, with a low around 30. Light and variable wind.
Mostly Cloudy on Sunday Sunday... Mostly cloudy, with a high near 52. Southwest wind 7 to 14 mph becoming west in the afternoon. Winds could gust as high as 25 mph.
Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 28. West wind 5 to 7 mph becoming calm in the evening.
Mostly Sunny on Monday Monday... Mostly sunny, with a high near 52. Light and variable wind.
20% chance of rain Monday Night Monday Night... A slight chance of rain after 1am. Mostly cloudy, with a low around 37. Chance of precipitation is 20%.
90% chance of rain Tuesday Tuesday... Rain. High near 55. Chance of precipitation is 90%.
80% chance of rain Tuesday Night Tuesday Night... Rain. Low around 46. Chance of precipitation is 80%.
60% chance of rain Wednesday Wednesday... Rain likely, mainly before 1pm. Mostly cloudy, with a high near 58. Chance of precipitation is 60%.
Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 30.
Partly Sunny on Thanksgiving Day Thanksgiving Day... Partly sunny, with a high near 42.
30% chance of snow Thursday Night Thursday Night... A chance of snow showers. Mostly cloudy, with a low around 25. Chance of precipitation is 30%.
Mostly Cloudy on Friday Friday... Mostly cloudy, with a high near 39.
Sun Almanac for Arnold, Pennsylvania
Sunrise: 07:14 AM
Sunset: 4:56 PM
Civil Sunrise:06:44 AM
Civil Sunset: 5:26 PM
Nautical Sunrise: 06:11 AM
Nautical Sunset: 6:00 PM
Astro Sunrise: 05:38 AM
Astro Sunset: 6:32 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.