The highest day temperature in October 2025 was 85°F. The lowest night temperature was 40°F. The average values for day and night temperatures during October were 67.2°F и 50.8°F respectivly.

The average sea surface temperature in October 2025 for New Castle was 68.0°F. The maximum and minimum values were 59.2°F and 75.4°F respectively.

Most of the days in October are sunny but you can also expect cloudy and gloomy days.

Precipitation total in October for New Castle is 1.0 in. It makes october one of the most rainy months of the year.

The average wind speed in October is 7.0 mph.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for New Castle in October is 7.2 hours.