Weather on December 6
Longmont, CO
55 Years of Data
Avg High
45°F
Avg Low
18°F
Warmest
1990
49°F avg
Coldest
1972
-12°F avg
About This Date
December 6th in Longmont, CO typically brings chilly winter weather, with average highs around 45°F and lows near 18°F — a 27°F daily swing. Over 55 years of records, the warmest December 6th was in 1990 (49°F average), while the coldest was 1972 (-12°F) — a 61°F range across recorded history. Precipitation has occurred on 24% of recorded December 6th dates, with snow falling 13% of the time (heaviest snowfall: 5.8"). The last decade has been 4.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.0°F warmer on this date compared to 20-30 years ago.
Planning for December 6th in Longmont, CO? Bring layers as temperatures can vary throughout the day.
Warming Trend
1.2°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 37° | 21° | 29° | — | — |
| 2024 | 53° | 23° | 38° | — | — |
| 2023 | 58° | 24° | 41° | — | — |
| 2022 | 56° | 27° | 41° | — | — |
| 2021 | 66° | 17° | 42° | — | — |
| 2020 | 56° | 20° | 38° | — | — |
| 2019 | 42° | 23° | 33° | 0.43" | — |
| 2018 | 46° | 17° | 32° | 0.05" | 0.7" |
| 2017 | 46° | 14° | 30° | — | — |
| 2016 | 32° | 11° | 21° | — | — |
| 2015 | 56° | 21° | 38° | — | — |
| 2014 | 49° | 29° | 39° | — | — |
| 2013 | 8° | -9° | 0° | 0.05" | 0.3" |
| 2012 | 60° | 38° | 49° | — | — |
| 2011 | 35° | -4° | 16° | — | — |
| 2010 | 47° | 22° | 34° | — | — |
| 2009 | 25° | 11° | 18° | 0.61" | 5.8" |
| 2008 | 58° | 26° | 42° | — | — |
| 2007 | 52° | 34° | 43° | 0.03" | — |
| 2006 | 46° | 24° | 35° | — | — |
| 2005 | 32° | 6° | 19° | 0.25" | 1.5" |
| 2004 | 45° | 24° | 34° | — | — |
| 2003 | 39° | 14° | 27° | — | — |
| 2002 | 48° | 20° | 34° | — | — |
| 2001 | 50° | 28° | 39° | — | — |
| 2000 | 49° | 7° | 28° | — | — |
| 1999 | 51° | 14° | 33° | — | — |
| 1998 | 43° | 20° | 31° | 0.05" | — |
| 1997 | 32° | 9° | 20° | — | — |
| 1996 | 51° | 28° | 40° | — | — |
| 1995 | 45° | 21° | 33° | — | — |
| 1994 | 31° | 21° | 26° | 0.08" | — |
| 1993 | 47° | 12° | 29° | — | — |
| 1992 | 20° | 8° | 14° | 0.1" | — |
| 1991 | 49° | 22° | 35° | — | — |
| 1990warmest | 60° | 37° | 49° | 0.41" | 2" |
| 1989 | 64° | 29° | 46° | — | — |
| 1988 | 60° | 9° | 34° | — | — |
| 1987 | 55° | 27° | 41° | — | — |
| 1986 | 55° | 24° | 40° | — | — |
| 1985 | 48° | 24° | 36° | — | — |
| 1984 | 39° | 8° | 24° | — | — |
| 1983 | 25° | 3° | 14° | — | — |
| 1982 | 49° | 24° | 36° | — | — |
| 1981 | 65° | 25° | 45° | — | — |
| 1980 | 59° | 26° | 43° | — | — |
| 1979 | 44° | 20° | 32° | — | — |
| 1978 | 23° | 10° | 17° | 0.94" | 4.5" |
| 1977 | 26° | 7° | 16° | — | — |
| 1976 | 38° | 14° | 26° | — | — |
| 1975 | 54° | 30° | 42° | — | — |
| 1974 | 56° | 32° | 44° | 0.05" | — |
| 1973 | 38° | 10° | 24° | — | — |
| 1972coldest | 3° | -27° | -12° | 0.03" | 1" |
| 1971 | 41° | 14° | 28° | — | — |
55 years of data from LONGMONT 2 ESE