First Signs of Autumn Leaves Spotted in the Lower 48
• Fall foliage is starting to appear in higher elevations and U.S.-Canada border regions.
• Leaf color changes are caused by decreasing daylight and cooling temperatures breaking down chlorophyll.
• Peak foliage times vary by region, with northern areas peaking in mid-October and southern areas later in the fall.
Autumn colors appear in northern US states
The first signs of autumn are appearing across the Lower 48, with early fall colors starting to show in higher altitudes and along the U.S.-Canada border. States including Colorado, North Carolina, and New York are among the first to exhibit the changing leaves, marking the beginning of the fall season.
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