Friday morning, September 14th brought the coldest temperatures of the fall season so far to northern communities. Both Grand Forks, ND and Tower, MN reported 29 degrees F, while Waskish, International Falls, Hibbing, Cook, Crane Lake, Bigfork, and Babbitt reported lows of just 28 degrees F. Embarrass, MN fell to 26 degrees F, coldest in the state. The reading of 28 F at International Falls was the coldest since May 16th last spring.
A warm up is seen for the weekend before another round of cold temperatures intrudes on Tuesday and Wednesday of next week. To track the first occurrence of autumn freezing temperatures I would encourage you to use the Minnesota State Climatology Office web site which posts mapped temperatures.