Weather on December 21 at Arches
Arches National Park
Based on 55 years of data from Moab, UT
Elevation Note: Arches sits at 4,500 ft. Expect temperatures 16°F cooler than the data shown below, which comes from Moab, UT at a lower elevation.
Planning Your Visit
December 21st in Arches National Park (via Moab, UT) typically brings chilly winter weather, with average highs around 44°F and lows near 21°F. Over 55 years of records, the warmest December 21st was in 2010 (55°F average), while the coldest was 2012 (15°F) — a 40°F range across recorded history. Precipitation has occurred on 22% of recorded December 21st dates, with snow falling 5% of the time (heaviest snowfall: 9"). The last decade has been 2.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.2°F warmer on this date compared to 20-30 years ago.
Planning for December 21st in Arches? Bring layers as temperatures can vary throughout the day.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 59°F | 34°F | 0" | -- |
| 2024 | 46°F | 22°F | -- | 0" |
| 2023 | 51°F | 36°F | 0.2" | 0" |
| 2022 | 43°F | 15°F | 0" | 0" |
| 2021 | 42°F | 21°F | 0" | 0" |
| 2020 | 44°F | 17°F | 0" | 0" |
| 2019 | 40°F | 18°F | 0" | 0" |
| 2018 | 43°F | 25°F | 0" | 0" |
| 2017 | 54°F | 31°F | 2.41" | 9" |
| 2016 | 39°F | 20°F | 0" | 0" |
| 2015 | 47°F | 32°F | 0" | 0" |
| 2014 | 47°F | 31°F | 0" | 0" |
| 2013 | 41°F | 17°F | 0" | 0" |
| 2012 | 25°F | 5°F | 0" | 0" |
| 2011 | 46°F | 20°F | 0" | 0" |
| 2010 | 58°F | 52°F | 0.03" | 0" |
| 2009 | 34°F | 15°F | 0" | 0" |
| 2008 | 37°F | 18°F | 0" | 0" |
| 2007 | 48°F | 22°F | 0.08" | 0" |
| 2006 | 45°F | 24°F | 0" | 0" |
| 2005 | 51°F | 23°F | 0" | 0" |
| 2004 | 47°F | 26°F | 0" | 0" |
| 2003 | 49°F | 22°F | 0" | 0" |
| 2002 | 41°F | 19°F | 0.1" | 0.3" |
| 2001 | 43°F | 18°F | 0" | 0" |
| 2000 | 44°F | 17°F | 0" | 0" |
| 1999 | 47°F | 24°F | 0.03" | 0" |
| 1998 | 32°F | 12°F | 0.2" | 2" |
| 1997 | 46°F | 19°F | 0" | 0" |
| 1996 | 50°F | 27°F | 0" | 0" |
| 1995 | 45°F | 13°F | 0" | 0" |
| 1994 | 47°F | 15°F | 0" | 0" |
| 1993 | 42°F | 15°F | 0" | 0" |
| 1992 | 34°F | 7°F | 0" | 0" |
| 1991 | 35°F | 26°F | 0" | 0" |
| 1990 | 38°F | 10°F | 0.05" | -- |
| 1989 | 54°F | 23°F | 0" | 0" |
| 1988 | 46°F | 39°F | 0" | 0" |
| 1987 | 44°F | 22°F | 0" | 0" |
| 1986 | 52°F | 21°F | 0" | 0" |
| 1985 | 52°F | 19°F | 0" | -- |
| 1984 | 47°F | 27°F | 0" | -- |
| 1983 | 36°F | 20°F | 0.15" | 0" |
| 1982 | 47°F | 21°F | 0" | 0" |
| 1981 | 54°F | 34°F | 0.25" | 0" |
| 1980 | 55°F | 26°F | 0" | 0" |
| 1979 | 42°F | 19°F | 0.15" | -- |
| 1978 | 40°F | 15°F | 0" | 0" |
| 1977 | 35°F | 10°F | 0" | 0" |
| 1976 | 45°F | 9°F | 0" | 0" |
| 1975 | 36°F | 18°F | 0.25" | 0" |
| 1974 | 49°F | 25°F | 0" | -- |
| 1973 | 40°F | 15°F | 0" | -- |
| 1972 | 41°F | 19°F | 0" | 0" |
| 1971 | 32°F | 6°F | 0" | 0" |