Denver weather in October
October in Denver: cool, dry, with clean air — an excellent time to visit.
#5 of 12 months in Denver · #171 of 604 destinations to visit in October · comfort 84/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Denver climate normals — October
| Daytime high | 19°C / 65°F | 🙂 cool |
|---|---|---|
| Nighttime low | 3°C / 37°F | |
| Feels like (high) | 15°C / 59°F | |
| Rainfall | 23 mm / 0.9 in | ☀️ dry |
| Rainy days | 5 days | |
| Humidity | 51% | 🍃 comfortable |
| Dew point | -1°C / 29°F | |
| Sunshine | 9.5 h/day | |
| Daylight | 11.1 h | |
| Wind | 15 km/h / 9 mph | |
| Snowfall | 9.2 cm / 3.6 in | |
| Air quality (US AQI) | 31 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Denver in October — FAQ
- Is October a good time to visit Denver?
- October in Denver: cool, dry, with clean air — an excellent time to visit. It ranks #5 of 12 months for Denver on SeasonMap's comfort score (84/100).
- What is the weather like in Denver in October?
- In October, Denver averages a daily high of 18.6°C and a low of 2.6°C, with about 23.3 mm of rain over roughly 4.8 rainy days.
- What is the air quality in Denver in October?
- Denver has a mean US Air Quality Index of about 31 in October.
- Does it snow in Denver in October?
- Denver sees roughly 9.2 cm of snowfall in October.