The highest day temperature in December 2025 was 57°F. The lowest night temperature was 6°F. The average values for day and night temperatures during December were 27.5°F и 23.2°F respectivly.

The average sea surface temperature in December 2025 for Rochester was 41.6°F. The maximum and minimum values were 38.8°F and 45.6°F respectively.

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

Precipitation total in December for Rochester is 0.9 in.

The average wind speed in December is 10.8 mph. It makes December one of the most windy months of the year for Rochester.

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 Rochester in December is 2.9 hours.