The highest day temperature in December 2023 was 54°F. The lowest night temperature was 25°F. The average values for day and night temperatures during December were 43.4°F и 38.1°F respectivly.

The average sea surface temperature in December 2023 for Norwalk was 46.8°F. The maximum and minimum values were 42.0°F and 51.2°F respectively.

You can expect various weather conditions during December. Be ready for sunny, cloudy or even gloomy days.

Precipitation total in December for Norwalk is 2.0 in. It makes december one of the most rainy months of the year.

The average wind speed in December is 9.8 mph. It makes December one of the most windy months of the year for Norwalk.

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 Norwalk in December is 4.7 hours.