Grand Marais Minnesota USA 14 day weather forecastAtmospheric conditions at Grand Marais, Minnesota is constantly fluctuating. No matter if it's bright or cloudy, expect a selection of weather conditions during the year. From the stunning springtime flowers blossoming to the balmy and sun-filled summertime days, to the vibrant autumn foliage, and the snowy landscapes in winter, Grand Marais, Minnesota presents a diverse range of climate experiences all through the year.