Grand Teton National Park weather in May
May in Grand Teton National Park: cold, a little rain, with reliable snow — a great time to visit.
#5 of 12 months in Grand Teton National Park · #360 of 604 destinations to visit in May · comfort 79/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Grand Teton National Park climate normals — May
| Daytime high | 10°C / 50°F | 🧥 cold |
|---|---|---|
| Nighttime low | -1°C / 31°F | |
| Feels like (high) | 8°C / 46°F | |
| Rainfall | 71 mm / 2.8 in | 🌦 some rain |
| Rainy days | 15 days | |
| Humidity | 74% | 💧 humid |
| Dew point | 0°C / 32°F | |
| Sunshine | 11.9 h/day | |
| Daylight | 14.7 h | |
| Wind | 12 km/h / 8 mph | |
| Snowfall | 17 cm / 6.7 in | |
| Air quality (US AQI) | 57 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Grand Teton National Park?
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Grand Teton National Park in May — FAQ
- Is May a good time to visit Grand Teton National Park?
- May in Grand Teton National Park: cold, a little rain, with reliable snow — a great time to visit. It ranks #5 of 12 months for Grand Teton National Park on SeasonMap's comfort score (79/100).
- What is the weather like in Grand Teton National Park in May?
- In May, Grand Teton National Park averages a daily high of 10.2°C and a low of -0.6°C, with about 71.4 mm of rain over roughly 15.2 rainy days.
- What is the air quality in Grand Teton National Park in May?
- Grand Teton National Park has a mean US Air Quality Index of about 57 in May.
- Does it snow in Grand Teton National Park in May?
- Grand Teton National Park sees roughly 17 cm of snowfall in May.