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Arnold, PA Weather Forecast
Arnold, PA Weather Forecast Date: 523 PM EST Mon Nov 02 2026
The area/counties/county of: Westmoreland, including the cities of: Murrysville, Greensburg, New Kensington, Lower Burrell, Latrobe, and Monessen.or toggle through each period.
Tonight... Mostly cloudy this evening, then becoming partly cloudy. Lows in the upper 40s. South winds 5 to 10 mph.
Tuesday... Mostly sunny. Unseasonably warm with highs in the mid 70s. South winds around 5 mph.
Tuesday Night... Mainly clear. Mild. Lows around 50. Southeast winds around 5 mph.
Wednesday... Mostly sunny in the morning, then partly sunny with a slight chance of rain in the afternoon. Unseasonably warm with highs in the mid 70s. Southeast winds 5 to 10 mph. Chance of rain 20%.
Wednesday Night... Rain, mild. Lows in the upper 50s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain near 100%.
Thursday... Mostly cloudy with a chance of rain in the morning, then partly cloudy in the afternoon. Warm with highs in the upper 60s. Chance of rain 50%.
Thursday Night... Partly cloudy. Lows in the upper 40s.
Friday... Mostly cloudy in the morning, then becoming partly sunny. A 40% chance of rain. Mild. Highs in the mid 60s.
Friday Night... Mostly cloudy with a 40% chance of rain. Lows in the mid 40s.
Saturday... Mostly cloudy. A chance of rain in the morning. Highs in the mid 50s. Chance of rain 40%.
Saturday Night... Mostly cloudy. Lows in the mid 30s.
Sunday... Partly sunny. Highs in the mid 50s.
Sunday Night... Mostly cloudy with a 40% chance of rain. Lows in the mid 30s.
POP = Probability of Precipitation
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