Climate Weather Averages in Grand Marais Minnesota USAAtmospheric conditions in Grand Marais, Minnesota is perpetually shifting. Whether it's
fair or cloudy, look forward to an array of weather patterns during the year. Beginning in the beautiful springtime flowers blooming to the warm and sun-soaked summertime days, to the vibrant fall foliage, and the wintry landscapes during winter, Grand Marais, Minnesota presents a diverse variety of weather experiences all through the year.