The highest day temperature in March 2026 was 74°F. The lowest night temperature was 13°F. The average values for day and night temperatures during March were 46.6°F и 35.1°F respectivly.

The average sea surface temperature in March 2026 for Old Saybrook was 35.3°F. The maximum and minimum values were 31.0°F and 39.0°F respectively.

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

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

The average wind speed in March is 10.4 mph. It makes March one of the most windy months of the year for Old Saybrook.

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 Old Saybrook in March is 6.4 hours.