Grand Marais Minnesota 14 Day Weather Forecast The Weather Atmospheric conditions within Grand Marais, Minnesota is consistently fluctuating. Whether it is fair
or overcast, expect a variety of climate patterns throughout the year. Beginning in the breathtaking spring flowers blooming to the hot and sun-filled summertime days, to the scenic autumn foliage, and the snow-covered landscapes during winter, Grand Marais, Minnesota presents a diverse selection of climate experiences throughout the year.