Zion National Park weather in August
August in Zion National Park: hot, dry, with clean air — an excellent time to visit.
#6 of 12 months in Zion National Park · #266 of 604 destinations to visit in August · comfort 82/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Zion National Park climate normals — August
| Daytime high | 31°C / 87°F | 🥵 hot |
|---|---|---|
| Nighttime low | 18°C / 65°F | |
| Feels like (high) | 29°C / 84°F | |
| Rainfall | 17 mm / 0.7 in | ☀️ dry |
| Rainy days | 4 days | |
| Humidity | 45% | 🍃 comfortable |
| Dew point | 9°C / 47°F | |
| Sunshine | 12.3 h/day | |
| Daylight | 13.6 h | |
| Wind | 16 km/h / 10 mph | |
| Air quality (US AQI) | 43 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Zion National Park in August — FAQ
- Is August a good time to visit Zion National Park?
- August in Zion National Park: hot, dry, with clean air — an excellent time to visit. It ranks #6 of 12 months for Zion National Park on SeasonMap's comfort score (82/100).
- What is the weather like in Zion National Park in August?
- In August, Zion National Park averages a daily high of 30.6°C and a low of 18.1°C, with about 17.1 mm of rain over roughly 4.4 rainy days.
- What is the air quality in Zion National Park in August?
- Zion National Park has a mean US Air Quality Index of about 43 in August.