The highest day temperature in April 2026 was 55°F. The lowest night temperature was 17°F. The average values for day and night temperatures during April were 38.1°F и 33.5°F respectivly.

The average sea surface temperature in April 2026 for Grand Marais was 31.2°F. The maximum and minimum values were 30.2°F and 32.6°F respectively.

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

Precipitation total in April for Grand Marais is 1.1 in. It makes april one of the most rainy months of the year.

The average wind speed in April is 9.6 mph. It makes April one of the most windy months of the year for Grand Marais.

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 Grand Marais in April is 5.2 hours.