Great Sand Dunes National Park weather in July
July in Great Sand Dunes National Park: warm, dry, with clean air — an excellent time to visit.
#6 of 12 months in Great Sand Dunes National Park · #180 of 604 destinations to visit in July · comfort 86/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Great Sand Dunes National Park climate normals — July
| Daytime high | 29°C / 83°F | 🌤 warm |
|---|---|---|
| Nighttime low | 14°C / 58°F | |
| Feels like (high) | 28°C / 82°F | |
| Rainfall | 28 mm / 1.1 in | ☀️ dry |
| Rainy days | 7 days | |
| Humidity | 47% | 🍃 comfortable |
| Dew point | 7°C / 44°F | |
| Sunshine | 12.8 h/day | |
| Daylight | 14.5 h | |
| Wind | 14 km/h / 9 mph | |
| Air quality (US AQI) | 48 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Great Sand Dunes National Park?
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Great Sand Dunes National Park in July — FAQ
- Is July a good time to visit Great Sand Dunes National Park?
- July in Great Sand Dunes National Park: warm, dry, with clean air — an excellent time to visit. It ranks #6 of 12 months for Great Sand Dunes National Park on SeasonMap's comfort score (86/100).
- What is the weather like in Great Sand Dunes National Park in July?
- In July, Great Sand Dunes National Park averages a daily high of 28.5°C and a low of 14.2°C, with about 28.4 mm of rain over roughly 7.2 rainy days.
- What is the air quality in Great Sand Dunes National Park in July?
- Great Sand Dunes National Park has a mean US Air Quality Index of about 48 in July.