Rocky Mountain National Park weather in January
January in Rocky Mountain National Park: freezing, a little rain, with clean air — one of the weakest months to visit.
#11 of 12 months in Rocky Mountain National Park · #486 of 604 destinations to visit in January · comfort 49/100 (tier F)
Updated June 2026 · climate normals from ERA5 reanalysis
Rocky Mountain National Park climate normals — January
| Daytime high | -3°C / 27°F | 🥶 freezing |
|---|---|---|
| Nighttime low | -12°C / 10°F | |
| Feels like (high) | -7°C / 19°F | |
| Rainfall | 34 mm / 1.3 in | 🌦 some rain |
| Rainy days | 10 days | |
| Humidity | 70% | 💧 humid |
| Dew point | -13°C / 8°F | |
| Sunshine | 7.6 h/day | |
| Daylight | 9.7 h | |
| Wind | 15 km/h / 10 mph | |
| Snowfall | 42.5 cm / 16.7 in | |
| Air quality (US AQI) | 41 | 🍃 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 January — FAQ
- Is January a good time to visit Rocky Mountain National Park?
- January in Rocky Mountain National Park: freezing, a little rain, with clean air — one of the weakest months to visit. It ranks #11 of 12 months for Rocky Mountain National Park on SeasonMap's comfort score (49/100).
- What is the weather like in Rocky Mountain National Park in January?
- In January, Rocky Mountain National Park averages a daily high of -2.7°C and a low of -12.4°C, with about 34.1 mm of rain over roughly 9.6 rainy days.
- What is the air quality in Rocky Mountain National Park in January?
- Rocky Mountain National Park has a mean US Air Quality Index of about 41 in January.
- Does it snow in Rocky Mountain National Park in January?
- Rocky Mountain National Park sees roughly 42.5 cm of snowfall in January.