DavidandDayle wrote:
That part of Ontario has weather like the UP of Mi. It's south of the northern parts of Minnesota and North Dakota. Campgrounds probably open May to October (early October). April/May might be black fly season.
If you're on the eastern shore (any of the places in my list) you've a fair chance of having that sort of weather in July and August - a higher chance in June or September though. Lake Superior is quite cold (swimming in it takes some mental effort - usually more than I can spare) and keeps the land immediately around it cold too. Temperatures rise quickly as you move away from the lake.