New Castle Weather in October

What's the weather like in New Castle (Indiana) in October 2025?

The climate in New Castle during October can be summarized as mild and reasonably dry.

October is in the fall / autumn in New Castle and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a cool 18°C (64°F), whilst at night 5°C (40°F) is normal.

New Castle weather averages (imperial / metric)
Daytime temperature 18°C 64.4°F
Nightly temperature 4.6°C 40.3°F
Average temperature 11.3°C 52.3°F
Daily sunshine 6.9 hrs
Avg rainfall 69 mm 2.7 ins
Rainy days 9 days
Sea temperature 17°C 62.6°F
Humidity 71%
Windspeed 15.1kph 9 mph

On average October is the 3rd driest month of the year in New Castle with around 69mm 2.7 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 9 days, although this may vary considerably.

On the flip side this corresponds to an average of 6.9 hours of sunshine per day.

October temperatures in New Castle

New Castle average temperature in October

October rainfall

New Castle average rain in October

October hourly sunshine

New Castle average rain in October

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in New Castle in October 2025.

Other monthly averages

Best places to visit in October

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

New Castle weather stats

New Castle weather statistics
Hottest month: July 28.4°C 83.1°F
Driest month: February 61mm 2.4ins
Sunniest month: July 10.5hrs
Coldest month: January -0°C 32°F
Wettest month: May 114mm 4.5ins
Map showing location of New Castle (39.92894, -85.37025) New Castle map pin © Google

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