[REVISION HISTORY]

Colorado drought impact on autumn foliage

Updated 1 time since CLSTR started tracking revisions of this situation.

What changed

2026-09-05 23:25 UTC → 2026-09-07 04:26 UTC · added ~~removed~~

Colorado’s autumn foliage season is facing significant challenges due to persistent drought and unusually warm temperatures. Environmental stressors, including a lack of moisture and extreme heat, are expected to reduce the vibrancy and duration of the seasonal color changes. Experts note that trees may enter dormancy prematurely as a survival mechanism to conserve water, potentially leading to an earlier peak and less vivid colors. While some monsoonal moisture has appeared, late-summer precipitation has remained below normal levels. A dismal snowpack has further exacerbated these conditions. Meteorologists and forest entomologists suggest that the current dry conditions often push trees into dormancy sooner, which can cause leaves to fall before peak color is fully achieved. Color changes are anticipated in higher elevations, such as Rocky Mountain National Park and Summit County, during mid-to-late September, while changes in the foothills and metro areas are expected around early October.

Versions

Only revisions since CLSTR began indexing content versions appear here. Select a version to see what changed compared to the one before it.