Weather on December 15
Arvada, CO
55 Years of Data
Avg High
46°F
Avg Low
18°F
Warmest
2025
53°F avg
Coldest
1987
4°F avg
About This Date
December 15th in Arvada, 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 15th was in 2025 (53°F average), while the coldest was 1987 (4°F) — a 49°F range across recorded history. Precipitation has occurred on 9% of recorded December 15th dates, with snow falling 7% of the time (heaviest snowfall: 7"). The last decade has been 2.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.5°F warmer on this date compared to 20-30 years ago.
Planning for December 15th in Arvada, CO? Bring layers as temperatures can vary throughout the day.
Warming Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025warmest | 70° | 37° | 53° | — | — |
| 2024 | 59° | 30° | 45° | — | — |
| 2023 | 36° | 26° | 31° | — | — |
| 2022 | 41° | 12° | 27° | — | — |
| 2021 | 67° | 35° | 51° | — | — |
| 2020 | 35° | 10° | 23° | 0.64" | 2.5" |
| 2019 | 47° | 17° | 32° | — | — |
| 2018 | 58° | 23° | 40° | — | — |
| 2017 | 39° | 21° | 30° | — | — |
| 2016 | 30° | 9° | 19° | — | — |
| 2015 | 45° | 22° | 33° | 0.76" | 6" |
| 2014 | 37° | 18° | 27° | 0.84" | 2" |
| 2013 | 50° | 23° | 37° | — | — |
| 2012 | 47° | 25° | 36° | — | — |
| 2011 | 36° | 14° | 25° | — | — |
| 2010 | 48° | 17° | 33° | — | — |
| 2009 | 43° | 14° | 28° | — | — |
| 2008 | 24° | -1° | 12° | — | — |
| 2007 | 29° | -2° | 13° | — | — |
| 2006 | 55° | 34° | 44° | — | — |
| 2005 | 31° | 5° | 18° | — | — |
| 2004 | 41° | 22° | 31° | — | — |
| 2003 | 28° | 7° | 17° | — | — |
| 2002 | 51° | 32° | 42° | — | — |
| 2001 | 54° | 31° | 42° | — | — |
| 2000 | 51° | 20° | 35° | — | — |
| 1999 | 33° | 16° | 24° | — | — |
| 1998 | 66° | 27° | 46° | — | — |
| 1997 | 60° | 32° | 46° | — | — |
| 1996 | 43° | 8° | 25° | — | — |
| 1995 | 59° | 24° | 42° | — | — |
| 1994 | 46° | 19° | 33° | — | — |
| 1993 | 51° | 20° | 35° | — | — |
| 1992 | 35° | 10° | 23° | — | — |
| 1991 | 52° | 15° | 33° | — | — |
| 1990 | 46° | 13° | 29° | — | — |
| 1989 | 42° | 10° | 26° | — | — |
| 1988 | 42° | 11° | 26° | 1.52" | 7" |
| 1987coldest | 22° | -13° | 4° | — | — |
| 1986 | 52° | 12° | 32° | — | — |
| 1985 | 50° | 15° | 33° | — | — |
| 1984 | 43° | 1° | 22° | — | — |
| 1983 | 39° | 17° | 28° | 0.15" | — |
| 1982 | 51° | 27° | 39° | — | — |
| 1981 | 43° | 17° | 30° | — | — |
| 1980 | 63° | 35° | 49° | — | — |
| 1979 | 62° | 31° | 46° | — | — |
| 1978 | 50° | 10° | 30° | — | — |
| 1977 | 65° | 31° | 48° | — | — |
| 1976 | 55° | 25° | 40° | — | — |
| 1975 | 54° | 2° | 28° | — | — |
| 1974 | 40° | 22° | 31° | — | — |
| 1973 | 42° | 18° | 30° | — | — |
| 1972 | 38° | 4° | 21° | — | — |
| 1971 | 39° | 9° | 24° | — | — |
55 years of data from WATERTON NORTH COLORADO