Weather on December 27
Longmont, CO
55 Years of Data
Avg High
45°F
Avg Low
16°F
Warmest
2025
52°F avg
Coldest
2017
6°F avg
About This Date
December 27th in Longmont, CO typically brings chilly winter weather, with average highs around 45°F and lows near 16°F — a 29°F daily swing. Over 55 years of records, the warmest December 27th was in 2025 (52°F average), while the coldest was 2017 (6°F) — a 46°F range across recorded history. Precipitation has occurred on 9% of recorded December 27th dates, with snow falling 9% of the time (heaviest snowfall: 12.6"). The last decade has been 1.1°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.1°F cooler on this date compared to 20-30 years ago.
Planning for December 27th in Longmont, CO? Bring layers as temperatures can vary throughout the day.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025warmest | 68° | 35° | 52° | — | — |
| 2024 | 41° | 26° | 34° | — | — |
| 2023 | 44° | 30° | 37° | — | — |
| 2022 | 46° | 25° | 35° | — | — |
| 2021 | 51° | 19° | 35° | — | — |
| 2020 | 61° | 30° | 45° | — | — |
| 2019 | 36° | 20° | 28° | — | — |
| 2018 | 39° | 15° | 27° | — | — |
| 2017coldest | 11° | 2° | 6° | 0.03" | 0.2" |
| 2016 | 51° | 16° | 33° | — | — |
| 2015 | 27° | 5° | 16° | — | — |
| 2014 | 32° | 2° | 17° | 0.03" | 0.1" |
| 2013 | 59° | 29° | 44° | — | — |
| 2012 | 25° | 6° | 15° | — | — |
| 2011 | 55° | 21° | 38° | — | — |
| 2010 | 46° | 24° | 35° | — | — |
| 2009 | 35° | 15° | 25° | — | — |
| 2008 | 34° | 10° | 22° | — | — |
| 2007 | 21° | 11° | 16° | 0.43" | 2.9" |
| 2006 | 58° | 31° | 44° | — | — |
| 2005 | 56° | 40° | 48° | — | — |
| 2004 | 51° | 33° | 42° | — | — |
| 2003 | 52° | 17° | 34° | — | — |
| 2002 | 47° | 12° | 29° | — | — |
| 2001 | 54° | 10° | 32° | — | — |
| 2000 | 43° | 4° | 23° | — | — |
| 1999 | 55° | 26° | 41° | — | — |
| 1998 | 55° | 29° | 42° | — | — |
| 1997 | 40° | 9° | 24° | — | — |
| 1996 | 53° | 3° | 28° | — | — |
| 1995 | 53° | 7° | 30° | — | — |
| 1994 | 60° | 17° | 39° | — | — |
| 1993 | 62° | 22° | 42° | — | — |
| 1992 | 54° | 11° | 32° | — | — |
| 1991 | 44° | 13° | 28° | — | — |
| 1990 | 29° | -5° | 12° | — | — |
| 1989 | 57° | 11° | 34° | — | — |
| 1988 | 36° | -14° | 11° | — | — |
| 1987 | 26° | 16° | 21° | 2.49" | 12.6" |
| 1986 | 40° | 14° | 27° | — | — |
| 1985 | 32° | 15° | 24° | — | — |
| 1984 | 60° | 22° | 41° | — | — |
| 1983 | 34° | 11° | 22° | — | — |
| 1982 | 32° | 20° | 26° | — | — |
| 1981 | 45° | 8° | 26° | — | — |
| 1980 | 65° | 30° | 47° | — | — |
| 1979 | 38° | 27° | 32° | 1.14" | 6" |
| 1978 | 25° | 12° | 18° | — | — |
| 1977 | 37° | 10° | 24° | — | — |
| 1976 | 64° | 35° | 50° | — | — |
| 1975 | 48° | 25° | 36° | — | — |
| 1974 | 33° | 5° | 19° | — | — |
| 1973 | 34° | -1° | 17° | — | — |
| 1972 | 55° | 20° | 37° | — | — |
| 1971 | 42° | 18° | 30° | — | — |
55 years of data from LONGMONT 2 ESE