The highest day temperature in March 2025 was 66°F. The lowest night temperature was 15°F. The average values for day and night temperatures during March were 47.9°F и 35.6°F respectivly.

The average sea surface temperature in March 2025 for New Haven was 37.7°F. The maximum and minimum values were 33.2°F and 41.8°F respectively.

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

Precipitation total in March for New Haven is 1.3 in.

The average wind speed in March is 9.9 mph. It makes March one of the most windy months of the year for New Haven.

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 New Haven in March is 6.2 hours.