The highest day temperature in March 2025 was 47°F. The lowest night temperature was 4°F. The average values for day and night temperatures during March were 33.2°F и 23.1°F respectivly.

The average sea surface temperature in March 2025 for Duluth was 31.5°F. The maximum and minimum values were 30.6°F and 33.0°F respectively.

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

Precipitation total in March for Duluth is 0.7 in.

The average wind speed in March is 8.4 mph. This value is relatively stable throughout the year.

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 Duluth in March is 4.6 hours.