Weather on December 20
Arvada, CO
55 Years of Data
Avg High
45°F
Avg Low
17°F
Warmest
2023
54°F avg
Coldest
1998
2°F avg
About This Date
December 20th in Arvada, CO typically brings chilly winter weather, with average highs around 45°F and lows near 17°F — a 28°F daily swing. Over 55 years of records, the warmest December 20th was in 2023 (54°F average), while the coldest was 1998 (2°F) — a 52°F range across recorded history. Precipitation has occurred on 5% of recorded December 20th dates, with snow falling 4% of the time (heaviest snowfall: 3"). The last decade has been 11.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 11.1°F warmer on this date compared to 20-30 years ago.
Planning for December 20th in Arvada, CO? Bring layers as temperatures can vary throughout the day.
Warming Trend
1.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 72° | 33° | 52° | — | — |
| 2024 | 60° | 21° | 41° | — | — |
| 2023warmest | 66° | 42° | 54° | — | — |
| 2022 | 50° | 14° | 32° | — | — |
| 2021 | 60° | 32° | 46° | — | — |
| 2020 | 46° | 10° | 28° | — | — |
| 2019 | 49° | 27° | 38° | — | — |
| 2018 | 50° | 14° | 32° | — | — |
| 2017 | 53° | 25° | 39° | — | — |
| 2016 | 51° | 23° | 37° | — | — |
| 2015 | 58° | 21° | 39° | — | — |
| 2014 | 41° | 19° | 30° | — | — |
| 2013 | 60° | 17° | 39° | 0.03" | — |
| 2012 | 21° | 8° | 15° | 0.23" | 3" |
| 2011 | 37° | 15° | 26° | — | — |
| 2010 | 51° | 25° | 38° | — | — |
| 2009 | 50° | 29° | 39° | — | — |
| 2008 | 24° | 5° | 15° | — | — |
| 2007 | 51° | 27° | 39° | — | — |
| 2006 | 19° | 14° | 17° | — | — |
| 2005 | 46° | 21° | 34° | — | — |
| 2004 | 45° | 20° | 32° | — | — |
| 2003 | 56° | 32° | 44° | — | — |
| 2002 | 42° | 16° | 29° | — | — |
| 2001 | 54° | 23° | 38° | — | — |
| 2000 | 58° | 27° | 42° | — | — |
| 1999 | 38° | 14° | 26° | — | — |
| 1998coldest | 10° | -7° | 2° | — | — |
| 1997 | 31° | 9° | 20° | — | — |
| 1996 | 36° | 6° | 21° | — | — |
| 1995 | 29° | 5° | 17° | — | — |
| 1994 | 50° | 18° | 34° | — | — |
| 1993 | 35° | -5° | 15° | 0.08" | 1" |
| 1992 | 36° | 2° | 19° | — | — |
| 1991 | 45° | 16° | 30° | — | — |
| 1990 | 40° | -10° | 15° | — | — |
| 1989 | 34° | 0° | 17° | — | — |
| 1988 | 50° | 21° | 36° | — | — |
| 1987 | 37° | 13° | 25° | — | — |
| 1986 | 48° | 19° | 34° | — | — |
| 1985 | 45° | 18° | 31° | — | — |
| 1984 | 53° | 22° | 37° | — | — |
| 1983 | 18° | -2° | 8° | — | — |
| 1982 | 62° | 24° | 43° | — | — |
| 1981 | 51° | 27° | 39° | — | — |
| 1980 | 22° | 15° | 18° | — | — |
| 1979 | 61° | 32° | 46° | — | — |
| 1978 | 35° | 18° | 26° | — | — |
| 1977 | 34° | 10° | 22° | — | — |
| 1976 | 48° | 19° | 34° | — | — |
| 1975 | 56° | 29° | 42° | — | — |
| 1974 | 40° | 18° | 29° | — | — |
| 1973 | 44° | -6° | 19° | — | — |
| 1972 | 51° | 29° | 40° | — | — |
| 1971 | 54° | 22° | 38° | — | — |
55 years of data from WATERTON NORTH COLORADO