Great Sand Dunes National Park weather by month
The best time to visit Great Sand Dunes National Park, United States is September. Pick a month for full climate normals and a verdict.
- Januaryfreezing, dry, clean air62tier C
- Februaryfreezing, dry, clean air68tier C
- Marchcold, dry, reliable snow77tier B
- Aprilcool, dry85tier A
- Maynice, a little rain92tier S
- Junenice, dry91tier S
- Julywarm, dry, clean air87tier A
- Augustwarm, dry, clean air89tier A
- Septembernice, dry, clean air94tier S
- Octobercool, dry, clean air90tier S
- Novembercold, dry, clean air79tier B
- Decemberfreezing, dry, clean air67tier C