Planning for the weather is a good way to make your trip to Minneapolis - St. Paul relaxing and enjoyable, especially when you’re splurging. The hottest months are usually July and August, with an average temperature of 21°C, while the coldest months are January and February, with an average of -6°C. The snowiest months in Minneapolis - St. Paul are March, February, October and December, with each month seeing an average of 17 cm of snowfall.