Weather on December 13
Longmont, CO
55 Years of Data
Avg High
47°F
Avg Low
19°F
Warmest
2010
50°F avg
Coldest
1972
9°F avg
About This Date
December 13th in Longmont, CO typically brings chilly winter weather, with average highs around 47°F and lows near 19°F — a 28°F daily swing. Over 55 years of records, the warmest December 13th was in 2010 (50°F average), while the coldest was 1972 (9°F) — a 41°F range across recorded history. Precipitation has occurred on 11% of recorded December 13th dates, with snow falling 5% of the time (heaviest snowfall: 1.3"). The last decade has been 8.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 8.3°F warmer on this date compared to 20-30 years ago.
Planning for December 13th in Longmont, CO? Bring layers as temperatures can vary throughout the day.
Warming Trend
2.0°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 51° | 26° | 39° | — | — |
| 2024 | 51° | 21° | 36° | — | — |
| 2023 | 32° | 28° | 30° | — | — |
| 2022 | 61° | 21° | 41° | — | — |
| 2021 | 65° | 26° | 45° | — | — |
| 2020 | 26° | 9° | 17° | 0.18" | 1.3" |
| 2019 | 50° | 28° | 39° | — | — |
| 2018 | 53° | 22° | 37° | — | — |
| 2017 | 64° | 25° | 44° | — | — |
| 2016 | 46° | 28° | 37° | — | — |
| 2015 | 44° | 19° | 32° | — | — |
| 2014 | 59° | 38° | 48° | — | — |
| 2013 | 51° | 25° | 38° | — | — |
| 2012 | 52° | 27° | 39° | — | — |
| 2011 | 43° | 15° | 29° | — | — |
| 2010warmest | 66° | 33° | 50° | — | — |
| 2009 | 51° | 32° | 42° | 0.03" | — |
| 2008 | 54° | 33° | 43° | — | — |
| 2007 | 43° | 16° | 29° | — | — |
| 2006 | 57° | 35° | 46° | — | — |
| 2005 | 51° | 29° | 40° | — | — |
| 2004 | 41° | 24° | 33° | — | — |
| 2003 | 35° | 7° | 21° | — | — |
| 2002 | 44° | 15° | 30° | — | — |
| 2001 | 32° | 4° | 18° | — | — |
| 2000 | 25° | -5° | 10° | — | — |
| 1999 | 48° | 18° | 33° | — | — |
| 1998 | 42° | 10° | 26° | — | — |
| 1997 | 49° | 7° | 28° | — | — |
| 1996 | 62° | 25° | 43° | — | — |
| 1995 | 57° | 35° | 46° | — | — |
| 1994 | 45° | 16° | 30° | — | — |
| 1993 | 56° | 22° | 39° | — | — |
| 1992 | 32° | 17° | 25° | 0.15" | — |
| 1991 | 51° | 22° | 36° | — | — |
| 1990 | 41° | 30° | 36° | 0.1" | 0.5" |
| 1989 | 36° | 7° | 21° | — | — |
| 1988 | 51° | 24° | 38° | — | — |
| 1987 | 35° | 16° | 25° | 0.05" | — |
| 1986 | 43° | 10° | 26° | — | — |
| 1985 | 26° | -9° | 9° | — | — |
| 1984 | 27° | 22° | 24° | 0.13" | 0.5" |
| 1983 | 53° | 21° | 37° | — | — |
| 1982 | 52° | 17° | 34° | — | — |
| 1981 | 46° | 23° | 35° | — | — |
| 1980 | 59° | 20° | 39° | — | — |
| 1979 | 42° | 1° | 22° | — | — |
| 1978 | 57° | 18° | 37° | — | — |
| 1977 | 59° | 20° | 39° | — | — |
| 1976 | 51° | 16° | 33° | — | — |
| 1975 | 35° | 19° | 27° | — | — |
| 1974 | 45° | 15° | 30° | — | — |
| 1973 | 52° | 24° | 38° | — | — |
| 1972coldest | 23° | -6° | 9° | — | — |
| 1971 | 37° | 13° | 25° | — | — |
55 years of data from LONGMONT 2 ESE