Record low max temps at a few stations across MN and WI for Sept 8th.
Duluth, MN: 52 tied 1946
Brainerd, MN: 52 tied 1946
Ashland, WI: 52 tied 1929
Mpls, MN: 52 broke 54(1929)
St. Cloud, MN: 53 broke 54(1929,1946)
Eau Claire, WI: 54 broke 60(1946)
Slew of stations from N WI
ANTIGO 49 broke 55 1911
APPLETON 55 broke 57 1943
MARSHFIELD 51 broke 56 1946
MERRILL 52 broke 57 1943
OSHKOSH 59 TIED 59 2008
RHINELANDER 50 broke 53 1943
WAUSAU 51 broke 55 1911
STEVENS POINT 52 broke 55 1924
WISCONSIN RAPIDS 53 broke 54 1975
Even Sioux Falls, SD: 49 tied 1929
I'm sure there are many more.