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Arnold, Pennsylvania Weather Forecast
Arnold, Pennsylvania Weather
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Weather Forecast for Arnold, Pennsylvania : Westmoreland County
Issued: 12:43 pm EST Jan 10, 2026 Latitude: 40.5800669 Longitude: -79.7667152 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Sunday Monday Tuesday Wednesday Thursday Friday
80% chance of rain on This Afternoon 90% chance of rain on Tonight 70% chance of snow on Sunday Mostly Sunny on Monday Partly Sunny on Tuesday 80% chance of rain on Wednesday 30% chance of snow on Thursday 30% chance of snow on Friday
High: 52°F Low: 31°F High: 36°F High: 39°F High: 46°F High: 44°F High: 27°F High: 35°F
Low: 26°F Low: 28°F Low: 37°F Low: 20°F Low: 18°F  
Rain Rain Snow Mostly Sunny Partly Sunny Rain Snow Snow
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Current Conditions at
BUTLER COUNTY - (KBTP)
Cloudy
as of 2:56 PM EST
Wind Data
Calm
Current Conditions at
ALLEGHENY COUNTY ARPT - (KAGC)
46°
Cloudy
Light Rain Mist
as of 2:53 PM EST
Rel. Humidity: 93%
Dew Point: 45°F
Visibility: 4 Miles
Pressure: 29.80 in.
Flight Rule: MVFR
Wind Data
6 MPH
130° Southeast
Cloud Level(s): Solid Overcast at 3300ft
Current Conditions at
PITTSBURGH - (KPIT)
46°
Cloudy
Light Rain
as of 2:51 PM EST
Rel. Humidity: 93%
Dew Point: 45°F
Visibility: 8 Miles
Pressure: 29.80 in.
Flight Rule: MVFR
Wind Data
5 MPH
140° Southeast
Cloud Level(s): Broken at 1400ft, Solid Overcast at 4400ft
Current Conditions at
LATROBE - (KLBE)
48°
Cloudy
as of 2:53 PM EST
Rel. Humidity: 93%
Dew Point: 46°F
Visibility: 10 Miles
Pressure: 29.84 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Solid Overcast at 5000ft
80% chance of rain This Afternoon This Afternoon... Rain. High near 52. South wind around 7 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
90% chance of rain Tonight Tonight... Rain, mainly before 9pm. Low around 31. West wind 8 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
70% chance of snow Sunday Sunday... Snow likely, mainly after 2pm. Mostly cloudy, with a high near 36. Breezy, with a west wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 34 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
30% chance of snow Sunday Night Sunday Night... A chance of snow before 7pm. Mostly cloudy, with a low around 26. West wind 8 to 16 mph, with gusts as high as 31 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Mostly Sunny on Monday Monday... Mostly sunny, with a high near 39. Southwest wind 8 to 14 mph, with gusts as high as 24 mph.
Cloudy on Monday Night Monday Night... Partly cloudy, with a low around 28.
Partly Sunny on Tuesday Tuesday... Partly sunny, with a high near 46.
40% chance of rain Tuesday Night Tuesday Night... A chance of rain after 1am. Mostly cloudy, with a low around 37. Chance of precipitation is 40%.
80% chance of rain Wednesday Wednesday... Rain. High near 44. Chance of precipitation is 80%.
50% chance of rain & snow Wednesday Night Wednesday Night... A chance of rain and snow before 1am, then a chance of snow. Mostly cloudy, with a low around 20. Chance of precipitation is 50%.
30% chance of snow Thursday Thursday... A chance of snow. Partly sunny, with a high near 27. Chance of precipitation is 30%.
Mostly Cloudy on Thursday Night Thursday Night... Mostly cloudy, with a low around 18.
30% chance of snow Friday Friday... A chance of snow. Mostly cloudy, with a high near 35. Chance of precipitation is 30%.
Current Radar Image


Sun Almanac for Arnold, Pennsylvania
Sunrise: 07:42 AM
Sunset: 5:11 PM
Civil Sunrise:07:12 AM
Civil Sunset: 5:42 PM
Nautical Sunrise: 06:38 AM
Nautical Sunset: 6:15 PM
Astro Sunrise: 06:05 AM
Astro Sunset: 6:48 PM
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