Weather on December 20
Denver, CO
55 Years of Data
Avg High
46°F
Avg Low
19°F
Warmest
2025
55°F avg
Coldest
1998
0°F avg
About This Date
December 20th in Denver, CO typically brings chilly winter weather, with average highs around 46°F and lows near 19°F — a 27°F daily swing. Over 55 years of records, the warmest December 20th was in 2025 (55°F average), while the coldest was 1998 (0°F) — a 55°F range across recorded history. Precipitation has occurred on 7% of recorded December 20th dates, with snow falling 7% of the time (heaviest snowfall: 1.5"). The last decade has been 10.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 10.7°F warmer on this date compared to 20-30 years ago.
Planning for December 20th in Denver, CO? Bring layers as temperatures can vary throughout the day.
Warming Trend
1.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025warmest | 73° | 37° | 55° | — | — |
| 2024 | 60° | 27° | 43° | — | — |
| 2023 | 65° | 40° | 52° | — | — |
| 2022 | 48° | 19° | 34° | — | — |
| 2021 | 60° | 30° | 45° | — | — |
| 2020 | 46° | 10° | 28° | — | — |
| 2019 | 47° | 23° | 35° | — | — |
| 2018 | 48° | 27° | 37° | — | — |
| 2017 | 58° | 17° | 37° | — | — |
| 2016 | 51° | 14° | 33° | — | — |
| 2015 | 59° | 30° | 45° | — | — |
| 2014 | 46° | 21° | 34° | — | — |
| 2013 | 47° | 14° | 30° | — | — |
| 2012 | 25° | 12° | 18° | 0.15" | 1" |
| 2011 | 33° | 16° | 24° | 0.18" | 0.7" |
| 2010 | 64° | 27° | 45° | — | — |
| 2009 | 50° | 18° | 34° | — | — |
| 2008 | 47° | 12° | 29° | — | — |
| 2007 | 54° | 28° | 41° | — | — |
| 2006 | 44° | 23° | 34° | 0.13" | 0.2" |
| 2005 | 51° | 9° | 30° | — | — |
| 2004 | 58° | 34° | 46° | — | — |
| 2003 | 54° | 16° | 35° | — | — |
| 2002 | 31° | 12° | 21° | — | — |
| 2001 | 50° | 22° | 36° | — | — |
| 2000 | 58° | 34° | 46° | — | — |
| 1999 | 40° | 12° | 26° | — | — |
| 1998coldest | 7° | -7° | 0° | — | — |
| 1997 | 32° | 20° | 26° | — | — |
| 1996 | 39° | 13° | 26° | — | — |
| 1995 | 38° | 14° | 26° | — | — |
| 1994 | 65° | 24° | 44° | — | — |
| 1993 | 32° | 8° | 20° | — | — |
| 1992 | 33° | 5° | 19° | — | — |
| 1991 | 47° | 20° | 33° | — | — |
| 1990 | 18° | -12° | 3° | 0.1" | 1.5" |
| 1989 | 33° | -6° | 14° | — | — |
| 1988 | 59° | 31° | 45° | — | — |
| 1987 | 38° | 15° | 26° | — | — |
| 1986 | 49° | 22° | 35° | — | — |
| 1985 | 49° | 27° | 38° | — | — |
| 1984 | 52° | 26° | 39° | — | — |
| 1983 | 14° | 2° | 8° | — | — |
| 1982 | 60° | 27° | 43° | — | — |
| 1981 | 53° | 30° | 42° | — | — |
| 1980 | 21° | 17° | 19° | — | — |
| 1979 | 62° | 32° | 47° | — | — |
| 1978 | 49° | 18° | 33° | — | — |
| 1977 | 33° | 21° | 27° | — | — |
| 1976 | 37° | 14° | 26° | — | — |
| 1975 | 58° | 18° | 38° | — | — |
| 1974 | 39° | 22° | 30° | — | — |
| 1973 | 30° | 4° | 17° | — | — |
| 1972 | 50° | 30° | 40° | — | — |
| 1971 | 53° | 29° | 41° | — | — |
55 years of data from LAKEWOOD