Arnold, Pennsylvania Weather
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Weather Forecast for Arnold, Pennsylvania : Westmoreland County
Issued: 7:02 am EDT Sep 15, 2025 Latitude: 40.5800669 Longitude: -79.7667152 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Tuesday Wednesday Thursday Friday Saturday Sunday
Sunny on Today Cloudy on Tonight Mostly Sunny on Tuesday Mostly Sunny on Wednesday Morning Fog on Thursday Morning Fog on Friday Sunny on Saturday Mostly Sunny on Sunday
High: 85°F Low: 56°F High: 83°F High: 80°F High: 85°F High: 85°F High: 81°F High: 82°F
Low: 54°F Low: 55°F Low: 55°F Low: 55°F Low: 58°F  
Sunny Cloudy Mostly Sunny Mostly Sunny Morning Fog Morning Fog Sunny Mostly Sunny
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Current Conditions at
BUTLER COUNTY - (KBTP)
59°
Partly Cloudy
as of 6:56 AM EDST
Rel. Humidity: 87%
Dew Point: 55°F
Visibility: 10 Miles
Pressure: 30.21 in.
Flight Rule: VFR
Wind Data
7 MPH
050° Northeast
Cloud Level(s): Scattered at 7000ft
Current Conditions at
ALLEGHENY COUNTY ARPT - (KAGC)
63°
Clear
Haze
as of 6:53 AM EDST
Rel. Humidity: 72%
Dew Point: 54°F
Visibility: 6 Miles
Pressure: 30.18 in.
Flight Rule: VFR
Wind Data
5 MPH
050° Northeast
Cloud Level(s): Clear
Current Conditions at
PITTSBURGH - (KPIT)
63°
Mostly Clear
as of 6:51 AM EDST
Rel. Humidity: 72%
Dew Point: 54°F
Visibility: 10 Miles
Pressure: 30.18 in.
Flight Rule: VFR
Wind Data
3 MPH
060° Northeast
Cloud Level(s): Few at 7000ft
Current Conditions at
LATROBE - (KLBE)
54°
Clear
as of 6:50 AM EDST
Rel. Humidity: 100%
Dew Point: 54°F
Visibility: 10 Miles
Pressure: 30.20 in.
Flight Rule: VFR
Wind Data
6 MPH
010° North
Cloud Level(s): Clear
Sunny on Today Today... Sunny, with a high near 85. East wind 3 to 6 mph.
Cloudy on Tonight Tonight... Partly cloudy, with a low around 56. Light east wind.
Mostly Sunny on Tuesday Tuesday... Mostly sunny, with a high near 83. Calm wind becoming east 5 to 7 mph in the morning.
Cloudy on Tuesday Night Tuesday Night... Partly cloudy, with a low around 54. Light east wind.
Mostly Sunny on Wednesday Wednesday... Mostly sunny, with a high near 80. Calm wind becoming east around 5 mph in the afternoon.
Morning Fog on Wednesday Night Wednesday Night... Patchy fog after 2am. Otherwise, mostly clear, with a low around 55.
Morning Fog on Thursday Thursday... Patchy fog before 9am. Otherwise, sunny, with a high near 85.
Morning Fog on Thursday Night Thursday Night... Patchy fog after 4am. Otherwise, mostly clear, with a low around 55.
Morning Fog on Friday Friday... Patchy fog before 9am. Otherwise, sunny, with a high near 85.
Mostly Clear on Friday Night Friday Night... Mostly clear, with a low around 55.
Sunny on Saturday Saturday... Sunny, with a high near 81.
Cloudy on Saturday Night Saturday Night... Partly cloudy, with a low around 58.
Mostly Sunny on Sunday Sunday... Mostly sunny, with a high near 82.
Current Radar Image


Sun Almanac for Arnold, Pennsylvania
Sunrise: 07:00 AM
Sunset: 7:28 PM
Civil Sunrise:06:33 AM
Civil Sunset: 7:55 PM
Nautical Sunrise: 06:01 AM
Nautical Sunset: 8:28 PM
Astro Sunrise: 05:28 AM
Astro Sunset: 9:01 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.