Add mosquitoes during those summers. Land of thousands of lakes has gazillions of them. Bigger ones then I was used from central Europe. Don't transmit any diseases, but boy having 50-100 stings on any non-covered part of the body is pretty annoying. After a week I've got used to it, you cover whatever you can, and unless you scratch them, stings become easy to ignore.

We met a guy who was hitchhiking, so had to stick out his arm. Afterwards he counted 168 bites on a single arm.