The highest day temperature in December 2025 was 42°F. The lowest night temperature was 12°F. The average values for day and night temperatures during December were 26.9°F и 26.4°F respectivly.

The average sea surface temperature in December 2025 for Harbor Springs was 39.6°F. The maximum and minimum values were 33.6°F and 45.2°F respectively.

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

Precipitation total in December for Harbor Springs is 0.7 in. It makes december one of the least rainy months of the year.

The average wind speed in December is 10.5 mph. It makes December one of the most windy months of the year for Harbor Springs.

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 Harbor Springs in December is 1.8 hours.