NOAA defines the “Upper Midwest” as Iowa, Minnesota, Wisconsin and Michigan. They show a strong warming trend in that region.
Climate at a Glance | National Centers for Environmental Information (NCEI)
But their actual thermometer data shows the region cooling.
The frequency of 90 degree days in that region has plummeted over the last century to record lows.
There is no indication that the upper midwest is warming. NOAA simply changes the data to create fake graphs for political purposes.