Because Isle Royale is so far north, springtime often comes a little late. The typical spring weather of rain, fog, cooler days with a hand-full of perfect days usually occurs in May, June, and part of July. It is common to find a few rainy days in all parts of the summer nor is it common to find a stretch of sunny warm days in the early part of the season! Usually by late July, August, September the weather starts to dry out and you will find more sunny, nice days than not. Of course, we cannot predict the weather, nor do we have any control over it.