Grand Teton National Park weather in October
October in Grand Teton National Park: cold, a little rain, with clean air — a great time to visit.
#6 of 12 months in Grand Teton National Park · #316 of 604 destinations to visit in October · comfort 75/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Grand Teton National Park climate normals — October
| Daytime high | 9°C / 49°F | 🧥 cold |
|---|---|---|
| Nighttime low | -2°C / 29°F | |
| Feels like (high) | 6°C / 43°F | |
| Rainfall | 72 mm / 2.8 in | 🌦 some rain |
| Rainy days | 11 days | |
| Humidity | 76% | 💦 very humid |
| Dew point | 0°C / 32°F | |
| Sunshine | 8.6 h/day | |
| Daylight | 11 h | |
| Wind | 12 km/h / 7 mph | |
| Snowfall | 28 cm / 11 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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Grand Teton National Park in October — FAQ
- Is October a good time to visit Grand Teton National Park?
- October in Grand Teton National Park: cold, a little rain, with clean air — a great time to visit. It ranks #6 of 12 months for Grand Teton National Park on SeasonMap's comfort score (75/100).
- What is the weather like in Grand Teton National Park in October?
- In October, Grand Teton National Park averages a daily high of 9.3°C and a low of -1.6°C, with about 71.9 mm of rain over roughly 11.2 rainy days.
- What is the air quality in Grand Teton National Park in October?
- Grand Teton National Park has a mean US Air Quality Index of about 41 in October.
- Does it snow in Grand Teton National Park in October?
- Grand Teton National Park sees roughly 28 cm of snowfall in October.