Petrified Forest National Park weather in May
May in Petrified Forest National Park: nice, dry — an excellent time to visit.
#3 of 12 months in Petrified Forest National Park · #160 of 604 destinations to visit in May · comfort 87/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Petrified Forest National Park climate normals — May
| Daytime high | 27°C / 80°F | 😎 nice |
|---|---|---|
| Nighttime low | 11°C / 51°F | |
| Feels like (high) | 22°C / 72°F | |
| Rainfall | 8 mm / 0.3 in | ☀️ dry |
| Rainy days | 2 days | |
| Humidity | 21% | 🌵 dry |
| Dew point | -6°C / 21°F | |
| Sunshine | 12.7 h/day | |
| Daylight | 14 h | |
| Wind | 30 km/h / 19 mph | |
| Air quality (US AQI) | 60 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Petrified Forest National Park?
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Petrified Forest National Park in May — FAQ
- Is May a good time to visit Petrified Forest National Park?
- May in Petrified Forest National Park: nice, dry — an excellent time to visit. It ranks #3 of 12 months for Petrified Forest National Park on SeasonMap's comfort score (87/100).
- What is the weather like in Petrified Forest National Park in May?
- In May, Petrified Forest National Park averages a daily high of 26.6°C and a low of 10.8°C, with about 7.6 mm of rain over roughly 1.8 rainy days.
- What is the air quality in Petrified Forest National Park in May?
- Petrified Forest National Park has a mean US Air Quality Index of about 60 in May.