The highest day temperature in January 2026 was 37°F. The lowest night temperature was -29°F. The average values for day and night temperatures during January were 10.5°F и 3.6°F respectivly.

The average sea surface temperature in January 2026 for Grand Marais was 34.4°F. The maximum and minimum values were 32.2°F and 35.6°F respectively.

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

Precipitation total in January for Grand Marais is 0.3 in. It makes january the least rainy month of the year.

The average wind speed in January is 9.6 mph. It makes January 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 January is 3.7 hours.