The highest day temperature in December 2023 was 52°F. The lowest night temperature was 17°F. The average values for day and night temperatures during December were 37.6°F и 32.3°F respectivly.

The average sea surface temperature in December 2023 for Lake Geneva was 32.3°F. The maximum and minimum values were 30.0°F and 44.2°F respectively.

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

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

The average wind speed in December is 9.8 mph.

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 Lake Geneva in December is 3.9 hours.