The highest day temperature in December 2023 was 59°F. The lowest night temperature was 26°F. The average values for day and night temperatures during December were 45.9°F и 38.3°F respectivly.

The average sea surface temperature in December 2023 for New Castle was 43.5°F. The maximum and minimum values were 40.4°F and 46.8°F respectively.

You can expect various weather conditions during December. Be ready for sunny, cloudy or even gloomy days.

Precipitation total in December for New Castle is 1.3 in. It makes december one of the most rainy months of the year.

The average wind speed in December is 7.6 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 December is 4.7 hours.