The highest day temperature in December 2025 was 56°F. The lowest night temperature was 11°F. The average values for day and night temperatures during December were 35.6°F и 27.4°F respectivly.

The average sea surface temperature in December 2025 for Newport was 44.0°F. The maximum and minimum values were 39.8°F and 49.2°F respectively.

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

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

The average wind speed in December is 10.0 mph. This value is relatively stable throughout the year.

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 Newport in December is 5.2 hours.