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 air60tier C
- Februaryfreezing, dry, clean air65tier C
- Marchcold, dry, reliable snow74tier B
- Aprilcool, dry83tier A
- Maynice, a little rain91tier S
- Junenice, dry88tier A
- Julywarm, dry, clean air86tier A
- Augustwarm, dry, clean air90tier S
- Septembernice, dry, clean air93tier S
- Octobercool, dry, clean air89tier A
- Novembercold, dry, clean air77tier B
- Decemberfreezing, dry, clean air67tier C