Because the United States is massive, spanning from the tropics of Florida to the Arctic circle of Alaska, the weather of autumn does not arrive everywhere at once.
For many Americans, autumn is defined by cultural events rather than the position of the sun: When does Autumn/Fall start for you? : r/AskAnAmerican when is autumn in america
| Region | Typical Start of Fall Foliage | Typical Peak Fall Color | Notes | |--------|-------------------------------|--------------------------|-------| | (e.g., Maine, Vermont) | Late September | Mid-October | Earliest and most famous autumn; cool nights trigger rapid change. | | Midwest (e.g., Michigan, Ohio) | Early October | Mid-to-late October | Often peaks around Halloween. | | South (e.g., North Georgia, Texas) | Late October | Early-to-mid November | Much later; some areas have mild autumn into December. | | West (Rockies, e.g., Colorado) | Mid-September | Late September to early October | Aspen trees turn golden early at high elevations. | | Pacific Northwest (e.g., Oregon, Washington) | Early October | Late October | Evergreen-dominated, but deciduous trees follow a coastal schedule. | | Southwest (e.g., Arizona, New Mexico) | November | Late November to December | Autumn can be very subtle; some trees turn only after first freeze. | | California (coastal) | November | Late November to December | Very delayed; "fall" often feels like extended summer until rains arrive. | | Florida & Deep South Texas | (No true autumn) | N/A | Subtropical climate; leaves often go from green to brown without significant color change. | Because the United States is massive, spanning from
, the arrival of autumn (commonly called ) is determined by two different calendars and a series of deep-rooted cultural traditions. When Fall Officially Starts (2026) | | Midwest (e
Because the U.S. spans a vast geographic area, the "feeling" of autumn—cooler air and changing colors—arrives at different times depending on where you are. New England and the Northeast