Grand Marais climate Average Temperature weather by month Atmospheric conditions in Grand Marais, Minnesota is consistently varying. Whether it's fair or overcast, anticipate a variety of weather patterns over the year. Starting from the stunning springtime flowers blooming to the warm and sun-soaked summer days, to the vibrant autumn foliage, and the snowy landscapes during winter, Grand Marais, Minnesota provides a wide variety of climate experiences all through the year.
