The highest day temperature in March 2026 was 63°F. The lowest night temperature was 3°F. The average values for day and night temperatures during March were 44.5°F и 33.7°F respectivly.

The average sea surface temperature in March 2026 for Plymouth was 37.0°F. The maximum and minimum values were 32.4°F and 40.2°F respectively.

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

Precipitation total in March for Plymouth is 1.2 in. It makes march one of the most rainy months of the year.

The average wind speed in March is 11.0 mph. It makes March the most windy month of the year for Plymouth.

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 Plymouth in March is 6.0 hours.