Editor’s note: This post originally ran at the start of last fall. We’ve tweaked it, and will continue to run a version of it at the start of every fall hiking season to help you avoid crowded trails in the most popular hiking season.
Officially, fall starts tomorrow, Sept. 21, officially at 3:21 p.m. EST. Appropriately, a rainy front is ushering in cold air about the same time that will drop temperatures about 15 degrees, into the low 70s initially. By the weekend, expect highs in the upper 70s, lows around 50.