So, what makes Lake Michigan's temps fluctuate like a mood swing? It's all about the depth and location, baby! The deeper you go, the colder it gets, and the closer you are to the shore, the warmer it is – makes sense, right?
But, here's the cool part: Lake Michigan is a massive body of water, covering over 22,400 square miles, which means the temps can vary drastically from one spot to another. For instance, the southern parts of the lake tend to be warmer than the northern bits, just because of the way the sun shines down on it.