Nature's palette is starting to take shape in parts of Michigan.

Leaves on some trees around the state are already turning yellow, a sign that fall leaf peeping season is near.Mel Koelling, retired forestry professor at Michigan State University, said the cooler summer weather isn't to blame for the early arrival of fall color. Instead, its things such as drought, fungus and even bug infestations that put stress on the tree causing leaves to change hues.

But Koelling says don't be fooled, the unseasonably cool summer weather does have somewhat of an impact on the leaves in the long run. He says lots of sunshine is needed to make lots of sugar to be converted into some brilliant red pigments. So, at this point Koelling thinks color might be somewhat muted this fall based on our weather patterns for the summer.

He adds that the recent mild weather can be traced back to last winter's Polar Vortex.