Why is the climate in the Great Lakes region of the United States cold and humid?

There should be the following points: 1, the latitude is equivalent to the northeast of China, and it is closer to the climate zone of the Arctic Ocean ice sheet, which is obviously affected.

2. The central plain has formed an airflow channel, which is unblocked by the warm and humid climate in the south and the cold climate in the north, so there are more snow and ice weather in winter in the United States and more disasters are caused.

Because the water in the Great Lakes has high specific heat, the temperature is not high.