Arches National Park weather in May
May in Arches National Park: nice, dry — an excellent time to visit.
#3 of 12 months in Arches National Park · #90 of 604 destinations to visit in May · comfort 89/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Arches National Park climate normals — May
| Daytime high | 25°C / 78°F | 😎 nice |
|---|---|---|
| Nighttime low | 10°C / 50°F | |
| Feels like (high) | 21°C / 70°F | |
| Rainfall | 15 mm / 0.6 in | ☀️ dry |
| Rainy days | 2 days | |
| Humidity | 24% | 🌵 dry |
| Dew point | -5°C / 23°F | |
| Sunshine | 12.9 h/day | |
| Daylight | 14.3 h | |
| Wind | 20 km/h / 13 mph | |
| Air quality (US AQI) | 55 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Arches National Park?
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Arches National Park in May — FAQ
- Is May a good time to visit Arches National Park?
- May in Arches National Park: nice, dry — an excellent time to visit. It ranks #3 of 12 months for Arches National Park on SeasonMap's comfort score (89/100).
- What is the weather like in Arches National Park in May?
- In May, Arches National Park averages a daily high of 25.4°C and a low of 10.1°C, with about 14.5 mm of rain over roughly 2.2 rainy days.
- What is the air quality in Arches National Park in May?
- Arches National Park has a mean US Air Quality Index of about 55 in May.