weather grand marais minnesotaAtmospheric conditions inside the heart of Grand Marais, Minnesota is perpetually changing. No matter if it's clear or cloudy, anticipate a selection of climate patterns over the year. From the beautiful springtime flowers blooming to the hot and sun-soaked summer days, to the vibrant fall foliage, and the snowy landscapes in winter, Grand Marais, Minnesota provides a diverse assortment of climate experiences during the year.