Zion National Park weather in May
May in Zion National Park: nice, dry — one of the best months to visit.
#2 of 12 months in Zion National Park · #50 of 604 destinations to visit in May · comfort 92/100 (tier S)
Updated June 2026 · climate normals from ERA5 reanalysis
Zion National Park climate normals — May
| Daytime high | 22°C / 72°F | 😎 nice |
|---|---|---|
| Nighttime low | 8°C / 46°F | |
| Feels like (high) | 19°C / 66°F | |
| Rainfall | 14 mm / 0.6 in | ☀️ dry |
| Rainy days | 3 days | |
| Humidity | 30% | 🌵 dry |
| Dew point | -4°C / 25°F | |
| Sunshine | 12.8 h/day | |
| Daylight | 14.2 h | |
| Wind | 19 km/h / 12 mph | |
| Snowfall | 0.4 cm / 0.2 in | |
| Air quality (US AQI) | 60 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Zion National Park in May — FAQ
- Is May a good time to visit Zion National Park?
- May in Zion National Park: nice, dry — one of the best months to visit. It ranks #2 of 12 months for Zion National Park on SeasonMap's comfort score (92/100).
- What is the weather like in Zion National Park in May?
- In May, Zion National Park averages a daily high of 22.1°C and a low of 7.9°C, with about 14.3 mm of rain over roughly 3 rainy days.
- What is the air quality in Zion National Park in May?
- Zion National Park has a mean US Air Quality Index of about 60 in May.