Petersburg, MN has a humid continental climate with warm to hot summers and cold winters. During the summer months, temperatures average around 70 degrees Fahrenheit (21 degrees Celsius), while in the winter months they dip down to an average of 11 degrees Fahrenheit (-12 degrees Celsius). The area experiences all four seasons, with precipitation throughout the year, including snowfall during the winter months. Petersburg also has higher than average humidity levels due to its location near Lake Superior and the Great Lakes Region.
Petersburg, Minnesota gets 29 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Petersburg averages 41 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 208 sunny days per year in Petersburg. The US average is 205 sunny days.
Petersburg gets some kind of precipitation, on average, 95 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.
Weather Highlights
Summer High: the July high is around 83 degrees
Winter Low: the January low is 6
Rain: averages 29 inches of rain a year
Snow: averages 41 inches of snow a year