The autumn leaves of red and gold are starting to fall in the high country, but they are not yet drifting by windows in the low country.
The best viewing has begun in higher areas.
In addition to gold of the quaking aspen, there are red and orange from birch and gambel oak.
The colder nighttime temperatures contribute to the color change, and eventually the literal fall of leaves.
The color change creeps down from the mountains into the lower elevations in October, becoming a chore for homeowners who have to dispose of them despite their beauty.