Yellowstone National Park weather in October
October in Yellowstone National Park: cold, a little rain, with clean air — a great time to visit.
#6 of 12 months in Yellowstone National Park · #384 of 604 destinations to visit in October · comfort 72/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Yellowstone National Park climate normals — October
| Daytime high | 7°C / 45°F | 🧥 cold |
|---|---|---|
| Nighttime low | -2°C / 29°F | |
| Feels like (high) | 3°C / 37°F | |
| Rainfall | 74 mm / 2.9 in | 🌦 some rain |
| Rainy days | 13 days | |
| Humidity | 75% | 💦 very humid |
| Dew point | -1°C / 30°F | |
| Sunshine | 8.5 h/day | |
| Daylight | 11 h | |
| Wind | 17 km/h / 11 mph | |
| Snowfall | 34.5 cm / 13.6 in | |
| Air quality (US AQI) | 40 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Yellowstone National Park in October — FAQ
- Is October a good time to visit Yellowstone National Park?
- October in Yellowstone National Park: cold, a little rain, with clean air — a great time to visit. It ranks #6 of 12 months for Yellowstone National Park on SeasonMap's comfort score (72/100).
- What is the weather like in Yellowstone National Park in October?
- In October, Yellowstone National Park averages a daily high of 7°C and a low of -1.9°C, with about 74 mm of rain over roughly 12.6 rainy days.
- What is the air quality in Yellowstone National Park in October?
- Yellowstone National Park has a mean US Air Quality Index of about 40 in October.
- Does it snow in Yellowstone National Park in October?
- Yellowstone National Park sees roughly 34.5 cm of snowfall in October.