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City of New Castle, INNew Castle, IN 7-Day Night Weather Forecast
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New Castle, IN Weather Forecast
New Castle, IN Weather Forecast Date: 253 AM EDT Thu Sep 17 2026
The area/counties/county of: Henry, including the city of New Castle.or toggle through each period.
Today... Partly cloudy. A slight chance of showers and thunderstorms toward daybreak. A chance of showers and thunderstorms through early afternoon, then a slight chance of showers and thunderstorms late this afternoon. Some thunderstorms May produce heavy rainfall toward daybreak. Humid with highs in the upper 80s. South winds around 5 mph, becoming northwest around 5 mph. Chance of rain 50%.
Tonight... Partly cloudy through the late overnight, then becoming mostly cloudy. A chance of thunderstorms. A chance of showers. Lows in the upper 60s. Northeast winds around 5 mph. Chance of rain 50%.
Friday... Mostly cloudy through early afternoon, then becoming partly cloudy. Highs in the upper 70s. Northeast winds 5 to 10 mph.
Friday Night... Partly cloudy through the late overnight, then clearing. Lows in the lower 60s. East winds 5 to 10 mph.
Saturday... Partly cloudy. A slight chance of showers through early afternoon, then a chance of showers and thunderstorms late in the afternoon. Highs in the mid 80s. South winds 5 to 10 mph. Chance of rain 50%.
Saturday Night... Partly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Highs in the mid 80s. Chance of rain 50%.
Sunday... Partly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Highs in the mid 80s. Chance of rain 50%.
Sunday Night... Mostly cloudy through the late overnight, then becoming partly cloudy. A slight chance of thunderstorms. A chance of showers through the late overnight, then a slight chance of showers toward daybreak. Lows in the lower 60s. Chance of rain 30%.
Monday... Mostly cloudy with a chance of showers and thunderstorms. Highs in the upper 70s. Lows in the upper 50s. Chance of rain 40%.
Monday Night... Mostly cloudy with a chance of showers and thunderstorms. Highs in the upper 70s. Lows in the upper 50s. Chance of rain 40%.
Tuesday... Partly cloudy with a 20% chance of showers. Highs in the upper 70s. Lows in the upper 50s.
POP = Probability of Precipitation
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