Weather on December 15 at Great Sand Dunes
Great Sand Dunes National Park and Preserve
Based on 55 years of data from Alamosa, CO
Elevation Note: Great Sand Dunes sits at 8,200 ft. Expect temperatures 29°F cooler than the data shown below, which comes from Alamosa, CO at a lower elevation.
Planning Your Visit
December 15th in Great Sand Dunes National Park (via Alamosa, CO) typically brings cold winter weather, with average highs around 34°F and lows near -2°F — a 36°F daily swing. Over 55 years of records, the warmest December 15th was in 2016 (39°F average), while the coldest was 1991 (-6°F) — a 45°F range across recorded history. Precipitation has occurred on 27% of recorded December 15th dates, with snow falling 29% of the time (heaviest snowfall: 4.3"). The last decade has been 7.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 7.7°F warmer on this date compared to 20-30 years ago.
Planning for December 15th in Great Sand Dunes? Bundle up with warm layers and protect extremities from the cold. Check road conditions if traveling, as snow is possible.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 50°F | 10°F | 0" | 0" |
| 2024 | 39°F | 2°F | 0" | 0" |
| 2023 | 36°F | 5°F | 0.1" | 0.3" |
| 2022 | 32°F | -5°F | 0" | 0" |
| 2021 | 50°F | 11°F | 0.03" | 0.1" |
| 2020 | 27°F | -2°F | 0.1" | 0.6" |
| 2019 | 49°F | 19°F | 0.53" | 4.3" |
| 2018 | 42°F | -1°F | 0" | 0" |
| 2017 | 36°F | 2°F | 0.13" | 1.3" |
| 2016 | 54°F | 25°F | 0" | 0" |
| 2015 | 40°F | 10°F | 0" | 0.3" |
| 2014 | 41°F | 9°F | 0.03" | 0.1" |
| 2013 | 29°F | -5°F | 0" | 0" |
| 2012 | 29°F | 3°F | 0.51" | 3" |
| 2011 | 36°F | -3°F | 0" | 0" |
| 2010 | 54°F | 0°F | 0" | 0" |
| 2009 | 34°F | -7°F | 0" | 0" |
| 2008 | 25°F | -5°F | 0.03" | 0.1" |
| 2007 | 18°F | -17°F | 0.15" | 1.4" |
| 2006 | 48°F | 8°F | 0" | 0" |
| 2005 | 32°F | -10°F | 0" | 0" |
| 2004 | 44°F | 1°F | 0" | 0" |
| 2003 | 30°F | 7°F | 0" | 0" |
| 2002 | 37°F | 6°F | 0" | 0" |
| 2001 | 34°F | 1°F | 0" | 0" |
| 2000 | 38°F | 5°F | 0" | 0" |
| 1999 | 26°F | -10°F | 0" | 0" |
| 1998 | 45°F | 0°F | 0" | 0" |
| 1997 | 23°F | -12°F | 0" | 0" |
| 1996 | 27°F | 1°F | 0" | 0" |
| 1995 | 39°F | 1°F | 0" | 0" |
| 1994 | 32°F | 1°F | 0" | 0" |
| 1993 | 39°F | -2°F | 0" | 0" |
| 1992 | 12°F | -19°F | 0.08" | 0.3" |
| 1991 | 15°F | -28°F | 0" | 0" |
| 1990 | 29°F | -3°F | 0.13" | 0.5" |
| 1989 | 35°F | 2°F | 0" | 0" |
| 1988 | 32°F | 5°F | 0.05" | 0.4" |
| 1987 | 19°F | -14°F | 0" | 0" |
| 1986 | 37°F | 0°F | 0" | 0" |
| 1985 | 23°F | -16°F | 0" | 0" |
| 1984 | 33°F | 6°F | 0.15" | 0.6" |
| 1983 | 28°F | -8°F | 0.13" | 0.5" |
| 1982 | 32°F | -3°F | 0" | 0" |
| 1981 | 45°F | 4°F | 0" | 0" |
| 1980 | 49°F | 5°F | 0" | 0" |
| 1979 | 45°F | -2°F | 0" | 0" |
| 1978 | 18°F | -15°F | 0" | 0" |
| 1977 | 57°F | 10°F | 0" | 0" |
| 1976 | 37°F | -10°F | 0" | 0" |
| 1975 | 24°F | -8°F | 0" | 0" |
| 1974 | 29°F | 0°F | 0.03" | 0.2" |
| 1973 | 36°F | -1°F | 0" | 0" |
| 1972 | 16°F | -22°F | 0" | 0" |
| 1971 | 26°F | -14°F | 0" | 0" |