Grand Marais MN Weather Forecast and Conditions The Weather at the heart of Grand Marais, Minnesota is perpetually fluctuating. No matter if it's clear or overcast, expect an array of climate conditions over the year. From the gorgeous springtime flowers blooming to the hot and sun-filled summertime days, to the colorful fall foliage, and the snow-covered landscapes during winter, Grand Marais, Minnesota provides a wide variety of climate experiences all through the year.
