Grand Marais MN Monthly Weather Atmospheric conditions inside Grand Marais, Minnesota is consistently fluctuating. Whether it's bright or cloudy,
expect an array of climate patterns during the year. From the beautiful springtime flowers blossoming to the hot and sun-soaked summertime days, to the vibrant fall foliage, and the wintry landscapes during winter, Grand Marais, Minnesota presents a diverse selection of climate experiences during the year.