October in Colorado cools quickly: NOAA's 1991–2020 normals for Denver International Airport give an average high of 65.3°F, a low of 37.0°F and 0.99 inches of precipitation, while Aspen's normals are a 59.7°F high and a 29.0°F low. Colorado Springs adds 2.5 inches of normal snowfall in October. This page is a dated monthly snapshot reviewed October 19, 2026, not live weather or a live events feed.
Colorado this month
A dated monthly snapshot of Colorado weather normals and verified event dates.
This month at a glance
| Topic | Detail |
|---|---|
| Denver high / low | 65.3°F / 37.0°F (NOAA 1991–2020, Denver International Airport) |
| Colorado Springs high / low | 64.7°F / 36.6°F; 2.5 inches of normal snow |
| Aspen high / low | 59.7°F / 29.0°F |
| Schedules | Rocky Mountain 2026 timed entry has ended; Garden of the Gods moves to 5 a.m.–9 p.m. hours on November 1 |
For live conditions use the National Weather Service. See the events page.
How this page is maintained
We update it monthly; last review October 19, 2026. Between reviews it may be out of date.
Weather and what to wear
NOAA monthly normals.
Climate table →
This week
Verified schedule notes.
Events →
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Compare regions →Frequently asked questions
Is this page updated daily?
No. It is a monthly snapshot.
Where do the numbers come from?
NOAA NCEI climate normals and the agencies; see sources below.
What should I wear in October?
NOAA's normals suggest cool days and freezing nights in the mountains; bring warm layers.
Sources
Facts on this page were read from the sources below on October 19, 2026. Hours, fares, prices and event dates change — confirm with the source before you travel. How we research and update.
- U.S. Climate Normals 1991-2020, Denver International Airport (USW00003017) — NOAA National Centers for Environmental Information
- Timed Entry Permit System — National Park Service, Rocky Mountain National Park
- Garden of the Gods — City of Colorado Springs