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City of New Castle, PANew Castle, PA 7-Day Night Weather Forecast
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New Castle, PA Weather Forecast
New Castle, PA Weather Forecast Date: 202 PM EDT Tue Sep 22 2026
The area/counties/county of: Lawrence, including the cities of: New Castle and Ellwood City.or toggle through each period.
This Afternoon... Considerable cloudiness with a 50% chance of showers. Patchy fog. Near steady temperature in the lower 60s. East winds 10 to 15 mph with gusts up to 25 mph.
Tonight... Considerable cloudiness. A chance of showers, mainly in the evening. Lows in the lower 50s. East winds 10 to 15 mph with gusts up to 30 mph. Chance of rain 40%.
Wednesday... Partly sunny. A slight chance of showers in the morning. Highs in the mid 60s. East winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20%.
Wednesday Night... Mostly cloudy in the evening, then becoming partly cloudy. Lows in the upper 40s. East winds 5 to 10 mph with gusts up to 25 mph.
Thursday... Mostly sunny. Highs in the mid 60s. East winds 5 to 10 mph.
Thursday Night... Mainly clear. Lows in the mid 40s.
Friday... Sunny. Highs around 70.
Friday Night... Mainly clear. Lows in the upper 40s.
Saturday... Mostly sunny. Highs around 70.
Saturday Night... Mainly clear. Lows in the upper 40s.
Sunday... Mostly sunny. Highs in the lower 70s.
Sunday Night... Mainly clear. Lows around 50.
POP = Probability of Precipitation
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