The highest day temperature in January 2026 was 50°F. The lowest night temperature was 1°F. The average values for day and night temperatures during January were 32.5°F и 23.2°F respectivly.

The average sea surface temperature in January 2026 for Norwalk was 35.9°F. The maximum and minimum values were 31.6°F and 39.0°F respectively.

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

Precipitation total in January for Norwalk is 1.2 in.

The average wind speed in January is 10.3 mph. It makes January the most windy month 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 January is 5.3 hours.