The highest day temperature in March 2026 was 67°F. The lowest night temperature was 14°F. The average values for day and night temperatures during March were 44.2°F и 34.9°F respectivly.

The average sea surface temperature in March 2026 for Stonington was 36.1°F. The maximum and minimum values were 33.4°F and 40.6°F respectively.

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

Precipitation total in March for Stonington is 1.3 in. It makes march one of the most rainy months of the year.

The average wind speed in March is 10.0 mph. It makes March one of the most windy months of the year for Stonington.

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 Stonington in March is 6.3 hours.