Weather on December 22
Boulder, CO
55 Years of Data
Avg High
43°F
Avg Low
20°F
Warmest
2025
60°F avg
Coldest
1989
-11°F avg
About This Date
December 22nd in Boulder, CO typically brings chilly winter weather, with average highs around 43°F and lows near 20°F. Over 55 years of records, the warmest December 22nd was in 2025 (60°F average), while the coldest was 1989 (-11°F) — a 71°F range across recorded history. Precipitation has occurred on 20% of recorded December 22nd dates, with snow falling 20% of the time (heaviest snowfall: 14.6"). The last decade has been 9.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 9.2°F warmer on this date compared to 20-30 years ago.
Planning for December 22nd in Boulder, CO? Bring layers as temperatures can vary throughout the day. Check road conditions if traveling, as snow is possible.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025warmest | 72° | 48° | 60° | — | — |
| 2024 | 57° | 45° | 51° | — | — |
| 2023 | 57° | 30° | 44° | — | — |
| 2022 | 1° | -13° | -6° | — | — |
| 2021 | 63° | 37° | 50° | — | — |
| 2020 | 63° | 32° | 47° | — | — |
| 2019 | 61° | 36° | 48° | — | — |
| 2018 | 41° | 25° | 33° | — | — |
| 2017 | 41° | 7° | 24° | — | — |
| 2016 | 41° | 22° | 31° | — | — |
| 2015 | 54° | 25° | 39° | — | — |
| 2014 | 45° | 29° | 37° | 0.36" | 1.2" |
| 2013 | 40° | 13° | 26° | 0.1" | 0.8" |
| 2012 | 51° | 30° | 41° | — | — |
| 2011 | 33° | 15° | 24° | 2.36" | 14.6" |
| 2010 | 41° | 19° | 30° | — | — |
| 2009 | 51° | 32° | 42° | — | — |
| 2008 | 27° | 3° | 15° | — | — |
| 2007 | 35° | 9° | 22° | — | — |
| 2006 | 41° | 18° | 29° | — | — |
| 2005 | 62° | 23° | 43° | — | — |
| 2004 | 29° | 17° | 23° | 0.38" | 3.9" |
| 2003 | 39° | 27° | 33° | 0.41" | 1.8" |
| 2002 | 41° | 19° | 30° | — | — |
| 2001 | 45° | 22° | 33° | — | — |
| 2000 | 50° | 16° | 33° | — | — |
| 1999 | 44° | 11° | 27° | — | — |
| 1998 | 16° | -13° | 1° | — | — |
| 1997 | 38° | 25° | 31° | — | — |
| 1996 | 52° | 20° | 36° | — | — |
| 1995 | 30° | 13° | 21° | 0.3" | 2.3" |
| 1994 | 55° | 35° | 45° | — | — |
| 1993 | 27° | 2° | 14° | 0.18" | 2" |
| 1992 | 45° | 19° | 32° | — | — |
| 1991 | 45° | 28° | 36° | — | — |
| 1990 | 2° | -24° | -11° | — | — |
| 1989coldest | 4° | -25° | -11° | 0.18" | 0.8" |
| 1988 | 41° | 26° | 34° | — | — |
| 1987 | 40° | 22° | 31° | — | — |
| 1986 | 51° | 21° | 36° | — | — |
| 1985 | 56° | 34° | 45° | — | — |
| 1984 | 51° | 18° | 34° | — | — |
| 1983 | 0° | -15° | -7° | 0.13" | 1" |
| 1982 | 57° | 43° | 50° | — | — |
| 1981 | 38° | 10° | 24° | 0.71" | 3" |
| 1980 | 62° | 36° | 49° | — | — |
| 1979 | 39° | 31° | 35° | 0.51" | 3" |
| 1978 | 49° | 19° | 34° | — | — |
| 1977 | 50° | 33° | 42° | — | — |
| 1976 | 43° | 18° | 30° | — | — |
| 1975 | 45° | 25° | 35° | — | — |
| 1974 | 54° | 25° | 39° | — | — |
| 1973 | 60° | 37° | 49° | — | — |
| 1972 | 59° | 36° | 47° | — | — |
| 1971 | 52° | 28° | 40° | — | — |
55 years of data from BOULDER MUNI AP