The highest day temperature in December 2025 was 58°F. The lowest night temperature was 4°F. The average values for day and night temperatures during December were 34.0°F и 23.7°F respectivly.

The average sea surface temperature in December 2025 for Cambridge was 41.8°F. The maximum and minimum values were 39.6°F and 43.6°F respectively.

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

Precipitation total in December for Cambridge is 1.3 in. It makes december the most rainy month of the year.

The average wind speed in December is 8.5 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 Cambridge in December is 5.0 hours.