Rocky Mountain National Park weather in October
October in Rocky Mountain National Park: cold, a little rain, with clean air — a great time to visit.
#5 of 12 months in Rocky Mountain National Park · #275 of 604 destinations to visit in October · comfort 79/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Rocky Mountain National Park climate normals — October
| Daytime high | 10°C / 49°F | 🧥 cold |
|---|---|---|
| Nighttime low | -2°C / 28°F | |
| Feels like (high) | 6°C / 43°F | |
| Rainfall | 34 mm / 1.3 in | 🌦 some rain |
| Rainy days | 7 days | |
| Humidity | 62% | 💧 humid |
| Dew point | -4°C / 25°F | |
| Sunshine | 9.7 h/day | |
| Daylight | 11.1 h | |
| Wind | 16 km/h / 10 mph | |
| Snowfall | 19.8 cm / 7.8 in | |
| Air quality (US AQI) | 36 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Rocky Mountain National Park in October — FAQ
- Is October a good time to visit Rocky Mountain National Park?
- October in Rocky Mountain National Park: cold, a little rain, with clean air — a great time to visit. It ranks #5 of 12 months for Rocky Mountain National Park on SeasonMap's comfort score (79/100).
- What is the weather like in Rocky Mountain National Park in October?
- In October, Rocky Mountain National Park averages a daily high of 9.7°C and a low of -2.5°C, with about 34 mm of rain over roughly 7.4 rainy days.
- What is the air quality in Rocky Mountain National Park in October?
- Rocky Mountain National Park has a mean US Air Quality Index of about 36 in October.
- Does it snow in Rocky Mountain National Park in October?
- Rocky Mountain National Park sees roughly 19.8 cm of snowfall in October.