The highest day temperature in December 2025 was 36°F. The lowest night temperature was -10°F. The average values for day and night temperatures during December were 16.3°F и 11.5°F respectivly.

The average sea surface temperature in December 2025 for Bayfield was 36.5°F. The maximum and minimum values were 32.0°F and 41.4°F respectively.

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

Precipitation total in December for Bayfield is 0.6 in. It makes december one of the least rainy months of the year.

The average wind speed in December is 9.2 mph. It makes December one of the most windy months of the year for Bayfield.

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 Bayfield in December is 2.6 hours.