Minnesota can be both very warm and very cold depending on the season.  The best times to visit are late Spring and early Fall when temperatures are very moderate and pleasant.  The hot summer months are a great time to enjoy rest and relaxation in "the land of 10,000 lakes".  January is the coldest month with an average temperature of 11.2 °F and the warmest month is July with 73.1 °F as an average temperature.