Autumn, also known as fall in North American English, [1] is one of the four temperate seasons on Earth. Outside the tropics, autumn marks the transition from summer to winter, beginning in September …

Sep 13, 2024 · If you're planning to check out the autumn leaves in the Sangre de Cristo Mountains, Wet Mountains, or southwestern Colorado, you should probably wait until early to mid-October for …

Sep 11, 2025 · Learn more about when autumn foliage starts in Colorado. Autumn colors on Kebler Pass near Crested Butte. The best places to go are almost anywhere in the mountains. Some scenic …

Dec 21, 2025 · Autumn, or fall, season of the year between summer and winter during which temperatures gradually decrease. The autumn temperature transition between summer heat and …

Sep 29, 2025 · Whether you're planning a road trip, a peaceful hike or a weekend getaway, here are 10 incredible places to experience Colorado’s spectacular fall colors this September and October. Pro …

Oct 2, 2023 · ⚡ Quick summary Autumn, also called fall, is the transitional season between summer and winter, marked by cooler temperatures, shorter days, and leaves changing color and falling. Explore …

1. Relating to or occurring in autumn: autumn foliage; autumn harvests. 2. Grown during the season of autumn: autumn crops.

Sep 2, 2025 · Autumn and fall are used interchangeably as words for the season between summer and winter. Both are used in American and British English, but fall occurs more often in American English.

The Seasons Calculator shows the times and dates of Vernal (Spring) & Autumnal (Fall) equinoxes and Summer and Winter solstices all over the world.

Experience the beauty of fall in Colorado with these top day trips from Denver. Explore stunning aspen groves and captivating fall colors.