We are in WI, too.
We came home late this year because Winter had been hard and had lasted longer than usual.
I think we got here the first weekend in May. Except for a little rim near shore, the lake was still frozen over.
Generally, ice out happens March or early April.
Our summer has followed suit. We seem to be about a month behind. We were snow covered much of May, so sun could not warm the ground. Gardens went in late. A cool, rainy summer. Now, we are finding temps falling at night, and growing season nearly over.
Though leafy crops did well, corn did not ripen, tomatoes are small ( though really sweet and flavorful).
No cucs, yet. They usually ripen beginning early in July.
I forgot to mention that our winter was such that buds on the apple trees froze.
We have very few apples this year.
Very strange, and we really miss them.
SuZir, it sounds like your summer had been even cooler than ours. Are your leaves changing colors?
Ours are just now beginning.