Weather on December 3
Longmont, CO
55 Years of Data
Avg High
49°F
Avg Low
19°F
Warmest
2012
53°F avg
Coldest
1978
7°F avg
About This Date
December 3rd in Longmont, CO typically brings chilly winter weather, with average highs around 49°F and lows near 19°F — a 30°F daily swing. Over 55 years of records, the warmest December 3rd was in 2012 (53°F average), while the coldest was 1978 (7°F) — a 46°F range across recorded history. Precipitation has occurred on 18% of recorded December 3rd dates, with snow falling 16% of the time (heaviest snowfall: 8"). Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for December 3rd in Longmont, CO? Bring layers as temperatures can vary throughout the day.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 50° | 23° | 37° | 0.91" | 3.4" |
| 2024 | 51° | 22° | 36° | — | — |
| 2023 | 41° | 20° | 30° | — | — |
| 2022 | 53° | 15° | 34° | — | — |
| 2021 | 71° | 32° | 52° | — | — |
| 2020 | 37° | 14° | 26° | — | — |
| 2019 | 50° | 18° | 34° | — | — |
| 2018 | 40° | 17° | 28° | 0.05" | 0.4" |
| 2017 | 60° | 30° | 45° | — | — |
| 2016 | 43° | 16° | 29° | — | — |
| 2015 | 52° | 20° | 36° | — | — |
| 2014 | 57° | 28° | 43° | — | — |
| 2013 | 53° | 22° | 37° | 0.05" | 0.3" |
| 2012warmest | 62° | 45° | 53° | — | — |
| 2011 | 30° | 20° | 25° | 0.71" | 8" |
| 2010 | 65° | 34° | 49° | — | — |
| 2009 | 17° | 0° | 9° | 0.03" | 0.2" |
| 2008 | 55° | 22° | 38° | 0.08" | 0.3" |
| 2007 | 60° | 24° | 42° | — | — |
| 2006 | 30° | 3° | 17° | — | — |
| 2005 | 53° | 27° | 40° | 0.33" | 0.2" |
| 2004 | 48° | 9° | 28° | — | — |
| 2003 | 61° | 19° | 40° | — | — |
| 2002 | 60° | 26° | 43° | — | — |
| 2001 | 58° | 21° | 39° | — | — |
| 2000 | 41° | 16° | 28° | — | — |
| 1999 | 52° | 31° | 41° | 0.41" | 1" |
| 1998 | 73° | 22° | 47° | — | — |
| 1997 | 34° | 14° | 24° | 0.43" | — |
| 1996 | 41° | 8° | 25° | — | — |
| 1995 | 68° | 27° | 47° | — | — |
| 1994 | 64° | 25° | 44° | — | — |
| 1993 | 55° | 18° | 36° | — | — |
| 1992 | 33° | 9° | 21° | — | — |
| 1991 | 35° | 9° | 22° | — | — |
| 1990 | 47° | 11° | 29° | — | — |
| 1989 | 48° | 13° | 30° | — | — |
| 1988 | — | 14° | — | — | — |
| 1987 | 58° | 44° | 51° | — | — |
| 1986 | 40° | 14° | 27° | — | — |
| 1985 | 52° | 4° | 28° | — | — |
| 1984 | 38° | 11° | 24° | — | — |
| 1983 | 39° | 10° | 25° | — | — |
| 1982 | 43° | 13° | 28° | — | — |
| 1981 | 55° | 24° | 40° | — | — |
| 1980 | 56° | 17° | 36° | — | — |
| 1979 | 51° | 8° | 30° | — | — |
| 1978coldest | 12° | 1° | 7° | — | — |
| 1977 | 58° | 45° | 51° | — | — |
| 1976 | 62° | 21° | 42° | — | — |
| 1975 | 61° | 30° | 45° | — | — |
| 1974 | 47° | 17° | 32° | — | — |
| 1973 | 55° | 30° | 43° | 0.25" | 0.5" |
| 1972 | 61° | 14° | 37° | — | — |
| 1971 | 34° | 22° | 28° | — | — |
55 years of data from LONGMONT 2 ESE