Due to the drought, many trees had their leaves turn yellow, or turn brown and fall off, even as early as August. Black birch trees in particular had many yellow leaves appearing notably early, in late August. Some sugar maples also had branches turn yellow or orange in early September. On the other hand, for many trees growing in moist ground where the effects of the drought have been less pronounced, leaves are actually changing color later than usual due to warm temperatures!
Overall, this year's leaf peeping season will probably be more extended than in a typical year, with both earlier and later colorful foliage. With trees changing color at different times, plus more brown and dull changing leaves, this year's fall foliage is likely to be less vibrant and beautiful than usual.
Click HERE to listen to Richard Primack on WBUR discussing this year's peculiar autumn foliage!