As usual, warm, hot cool, cold weather departure from the averages can and does happen about anywhere on the planet Earth. No one can tell what it will be like at the time you are actually there in the future. Crystal balls don't even have that capability.
We live and have lived for 75 years in West Michigan on the lakeshore straight across Lake Michigan from Milwaukee and summer is in full force normally by mid May but the water in the lake is still too cold for swimming. Usually plenty fine by the 4th of July. Conversely, still fine for swimming in October as that huge volume of deep water is slow to warm but also slow to cool.
Same for Lake Superior but is always a lot lower on average water temp than Lake Michigan mainly because it's 300 to 400 miles farther north and this also has a big effect on the air temps in the U.P. in the early summer and again in the fall. Each has to decide what's for their liking! AS for the U.P., it's gorgeous 12 months each and every year, has been and will always be!!!
While summer and the heavy tourist season starts in mid May where we live, It doesn't really start heavy until July 1st in the U.P. due to air and water temps and the added late spring fly and mosquito hatchings till usually July but still very pleasant weather and water plus insects lacking going strong till mid October until after the colored leaves fall and then virtually no insects until the next spring warming. What that means is that the best season for tourism in the U.P. is shifted about one month later in the calendar year from the southern Lower Peninsula. There's no specific date to give when it's the best but rather simple guide line averages which only apply to those who want specific average factors and conditions to be expected. People are so different and what they do and want are even more varied. This applies to every one of the 50 states and Canada also. Noticed it also in our many trips to Mexico too and yes, Europe and South America also.
Not strange at all as the snowbirds etc don't flock to the south in summer either as it's brutally hot and humid then. So many of the Southern residents flock to the north in summer and we have them by the thousands here all summer.
Personally, we truly "hate" hot weather/temps over 85 F tops and especially with a high humidity level and would run or drive fast away and not just walk away from it and we sure aren't alone! Dead air is another as a reliable nice breeze is so important but certainly not having constant winds of 12 MPH or higher. Pampered old farts we are but we sure do like it!
A superb CC LB 4X4, GM HD Diesel, airbags, Rancho's, lots more
Lance Legend TC 11' 4", loaded including 3400 PP generator and my deluxe 2' X 7' rear porch
29 ft Carriage Carri-lite 5'er - a specially built gem
A like new '07 Sunline Solaris 26' TT
