Weather on December 21
Aurora, CO
55 Years of Data
Avg High
46°F
Avg Low
18°F
Warmest
2003
46°F avg
Coldest
1983
-14°F avg
About This Date
December 21st in Aurora, CO typically brings chilly winter weather, with average highs around 46°F and lows near 18°F — a 28°F daily swing. Over 55 years of records, the warmest December 21st was in 2003 (46°F average), while the coldest was 1983 (-14°F) — a 60°F range across recorded history. Precipitation has occurred on 16% of recorded December 21st dates, with snow falling 16% of the time (heaviest snowfall: 20.7"). The last decade has been 12.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 12.5°F warmer on this date compared to 20-30 years ago.
Planning for December 21st in Aurora, CO? Bring layers as temperatures can vary throughout the day.
Warming Trend
1.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 66° | 25° | 45° | — | — |
| 2024 | 67° | 18° | 42° | — | — |
| 2023 | 57° | 34° | 45° | — | — |
| 2022 | 50° | 20° | 35° | — | — |
| 2021 | 62° | 24° | 43° | — | — |
| 2020 | 53° | 23° | 38° | — | — |
| 2019 | 56° | 24° | 40° | — | — |
| 2018 | 50° | 21° | 36° | — | — |
| 2017 | 66° | 23° | 45° | 0.03" | 0.1" |
| 2016 | 59° | 31° | 45° | — | — |
| 2015 | 50° | 27° | 38° | — | — |
| 2014 | 50° | 26° | 38° | — | — |
| 2013 | 23° | 14° | 19° | — | — |
| 2012 | 50° | 14° | 32° | — | — |
| 2011 | 37° | 16° | 26° | — | — |
| 2010 | 58° | 20° | 39° | — | — |
| 2009 | 57° | 22° | 39° | — | — |
| 2008 | 31° | 5° | 18° | — | — |
| 2007 | 50° | 24° | 37° | — | — |
| 2006 | 26° | 21° | 24° | 3.63" | 20.7" |
| 2005 | 52° | 25° | 38° | — | — |
| 2004 | 58° | 26° | 42° | — | — |
| 2003warmest | 63° | 29° | 46° | — | — |
| 2002 | 45° | 18° | 31° | — | — |
| 2001 | 42° | 18° | 30° | — | — |
| 2000 | 37° | 3° | 20° | 0.1" | 0.8" |
| 1999 | 34° | 16° | 25° | — | — |
| 1998 | 6° | -12° | -3° | 0.23" | 1" |
| 1997 | 39° | 16° | 27° | — | — |
| 1996 | 45° | 22° | 33° | — | — |
| 1995 | 32° | 14° | 23° | 0.03" | 0.1" |
| 1994 | 62° | 25° | 43° | — | — |
| 1993 | 29° | 8° | 18° | 0.3" | 2.3" |
| 1992 | 43° | 11° | 27° | — | — |
| 1991 | 49° | 20° | 34° | — | — |
| 1990 | -7° | -21° | -14° | 0.03" | 0.2" |
| 1989 | 4° | -9° | -3° | 0.1" | 0.4" |
| 1988 | 47° | 20° | 33° | — | — |
| 1987 | 47° | 16° | 31° | — | — |
| 1986 | 44° | 22° | 33° | — | — |
| 1985 | 60° | 29° | 44° | — | — |
| 1984 | 39° | 24° | 32° | — | — |
| 1983coldest | -8° | -21° | -14° | — | — |
| 1982 | 62° | 29° | 45° | — | — |
| 1981 | 49° | 28° | 38° | 0.84" | 4" |
| 1980 | 58° | 26° | 42° | — | — |
| 1979 | 53° | 25° | 39° | — | — |
| 1978 | 48° | 20° | 34° | — | — |
| 1977 | 51° | 12° | 32° | — | — |
| 1976 | 57° | 15° | 36° | — | — |
| 1975 | 46° | 23° | 35° | — | — |
| 1974 | 57° | 27° | 42° | — | — |
| 1973 | 52° | 24° | 38° | — | — |
| 1972 | 53° | 27° | 40° | — | — |
| 1971 | 58° | 24° | 41° | — | — |
55 years of data from DENVER-STAPLETON