Grand Marais Minnesota WikiwandAtmospheric conditions within Grand Marais, Minnesota is consistently fluctuating. Whether it is bright or overcast, anticipate a variety of climate conditions during the year. Starting from the breathtaking spring flowers blooming to the balmy and sun-filled summer days, to the scenic fall foliage, and the snow-covered landscapes during winter, Grand Marais, Minnesota offers a diverse range of weather experiences during the year.