Weather on December 1
Boulder, CO
55 Years of Data
Avg High
49°F
Avg Low
24°F
Warmest
1995
60°F avg
Coldest
1985
2°F avg
About This Date
December 1st in Boulder, CO typically brings chilly winter weather, with average highs around 49°F and lows near 24°F — a 25°F daily swing. Over 55 years of records, the warmest December 1st was in 1995 (60°F average), while the coldest was 1985 (2°F) — a 58°F range across recorded history. Precipitation has occurred on 9% of recorded December 1st dates, with snow falling 9% of the time (heaviest snowfall: 7.6"). The last decade has been 2.0°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.0°F cooler on this date compared to 20-30 years ago.
Planning for December 1st in Boulder, 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 |
|---|---|---|---|---|---|
| 2025 | 45° | 14° | 29° | — | — |
| 2024 | 50° | 27° | 39° | — | — |
| 2023 | 37° | 23° | 30° | — | — |
| 2022 | 57° | 18° | 38° | — | — |
| 2021 | 72° | 41° | 56° | — | — |
| 2020 | 43° | 30° | 37° | — | — |
| 2019 | 30° | 16° | 23° | — | — |
| 2018 | 46° | 23° | 35° | — | — |
| 2017 | 64° | 32° | 48° | — | — |
| 2016 | 42° | 17° | 30° | — | — |
| 2015 | 41° | 16° | 28° | — | — |
| 2014 | 37° | 18° | 27° | — | — |
| 2013 | 56° | 31° | 43° | — | — |
| 2012 | 65° | 38° | 51° | — | — |
| 2011 | 48° | 20° | 34° | 1.45" | 7.6" |
| 2010 | 59° | 28° | 44° | — | — |
| 2009 | 50° | 28° | 39° | — | — |
| 2008 | 57° | 21° | 39° | — | — |
| 2007 | 40° | 18° | 29° | — | — |
| 2006 | 39° | 16° | 27° | — | — |
| 2005 | 37° | 17° | 27° | — | — |
| 2004 | 37° | 15° | 26° | — | — |
| 2003 | 51° | 31° | 41° | — | — |
| 2002 | 59° | 27° | 43° | — | — |
| 2001 | 53° | 27° | 40° | — | — |
| 2000 | 41° | 20° | 30° | — | — |
| 1999 | 66° | 41° | 54° | — | — |
| 1998 | 68° | 38° | 53° | — | — |
| 1997 | 47° | 30° | 38° | — | — |
| 1996 | 51° | 14° | 33° | — | — |
| 1995warmest | 69° | 51° | 60° | — | — |
| 1994 | 67° | 32° | 49° | — | — |
| 1993 | 50° | 33° | 42° | — | — |
| 1992 | 47° | 35° | 41° | — | — |
| 1991 | 24° | 8° | 16° | — | — |
| 1990 | 52° | 26° | 39° | — | — |
| 1989 | 53° | 14° | 34° | — | — |
| 1988 | 61° | 31° | 46° | — | — |
| 1987 | 52° | 20° | 36° | — | — |
| 1986 | 45° | 25° | 35° | 0.05" | 1" |
| 1985coldest | 9° | -5° | 2° | — | 0.5" |
| 1984 | 49° | 26° | 37° | — | — |
| 1983 | 46° | 6° | 26° | — | — |
| 1982 | 44° | 30° | 37° | 0.08" | — |
| 1981 | 43° | 20° | 31° | — | — |
| 1980 | 58° | 26° | 42° | — | — |
| 1979 | 44° | 19° | 32° | — | — |
| 1978 | 54° | 23° | 38° | — | — |
| 1977 | 37° | 20° | 28° | — | — |
| 1976 | 47° | 12° | 29° | 0.03" | 0.4" |
| 1975 | 53° | 32° | 43° | — | — |
| 1974 | 40° | 15° | 27° | — | — |
| 1973 | 65° | 28° | 46° | — | — |
| 1972 | 54° | 38° | 46° | — | — |
| 1971 | 36° | 23° | 29° | 0.69" | 3.7" |
55 years of data from BOULDER MUNI AP