Grand Marais MN 10Day Weather Forecast The Weather Climate in Grand Marais, Minnesota is always fluctuating. No matter if it's clear or overcast, expect an array of climate conditions over the year. From the beautiful springtime flowers blossoming to the hot and sun-soaked summertime days, to the scenic autumn foliage, and the wintry landscapes in winter, Grand Marais, Minnesota presents a varied range of climate experiences all through the
year.