The highest day temperature in March 2025 was 48°F. The lowest night temperature was 20°F. The average values for day and night temperatures during March were 39.7°F и 37.7°F respectivly.

The average sea surface temperature in March 2025 for Siasconset was 38.5°F. The maximum and minimum values were 35.4°F and 41.8°F respectively.

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

Precipitation total in March for Siasconset is 1.1 in.

The average wind speed in March is 19.1 mph. It makes March the most windy month of the year for Siasconset.

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 Siasconset in March is 5.5 hours.