Minnesota has a continental climate characterized by cold winters and warm summers--a land of extremes.Spring brings moderate temperatures and low humidity. Hiking trails may be muddy or even underwater if the river is high and trail closures in low lying areas are a possibility. Mosquitoes may be present in spring through mid-summer in forested areas.
Summer days may reach temperatures of more than 100°F (38°C), but are usually pleasant with temperatures in the low to mid-80°F (25-30°C) range. Summer thunderstorms are not unusual.
Autumn brings dry, warm days, cool nights and gorgeous fall colors. Autumn is a wonderful time of year for fishing, boating, bicycling or hiking along the river.
Winter days can, rarely, get no warmer than -10°F (-23°C) with cutting winds and blowing snow. Most daytime highs in mid-winter, however, are around 25°F (-3°C). Temperatures are often cold, but comfortable with the right clothing.
This great river--a river of history and wildlife--is a wonderful place to visit in any season.