Weather on January 15
Longmont, CO
55 Years of Data
Avg High
46°F
Avg Low
16°F
Warmest
1975
52°F avg
Coldest
2024
1°F avg
About This Date
January 15th in Longmont, CO typically brings chilly winter weather, with average highs around 46°F and lows near 16°F — a 30°F daily swing. Over 56 years of records, the warmest January 15th was in 1975 (52°F average), while the coldest was 2024 (1°F) — a 51°F range across recorded history. Precipitation has occurred on 9% of recorded January 15th dates, with snow falling 5% of the time. 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 January 15th in Longmont, CO? Bring layers as temperatures can vary throughout the day.
Warming Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 58° | 30° | 44° | — | — |
| 2025 | 42° | 13° | 27° | — | — |
| 2024coldest | 7° | -6° | 1° | 0.03" | 0.1" |
| 2023 | 60° | 27° | 43° | — | — |
| 2022 | 43° | 16° | 29° | — | — |
| 2021 | 42° | 16° | 29° | — | — |
| 2020 | 53° | 20° | 36° | — | — |
| 2019 | 50° | 15° | 33° | — | — |
| 2018 | 50° | 22° | 36° | 0.03" | — |
| 2017 | 44° | 20° | 32° | — | — |
| 2016 | 39° | 23° | 31° | — | — |
| 2015 | 57° | 23° | 40° | — | — |
| 2014 | 53° | 20° | 36° | — | — |
| 2013 | 29° | -3° | 13° | — | — |
| 2012 | 56° | 43° | 49° | — | — |
| 2011 | 51° | 32° | 42° | — | — |
| 2010 | 49° | 24° | 36° | — | — |
| 2009 | 46° | 26° | 36° | — | — |
| 2008 | 50° | 29° | 39° | — | — |
| 2007 | 28° | -4° | 12° | — | — |
| 2006 | 57° | 38° | 47° | — | — |
| 2005 | 34° | 8° | 21° | 0.03" | 0.1" |
| 2004 | 57° | 23° | 40° | — | — |
| 2003 | 54° | 22° | 38° | — | — |
| 2002 | 38° | 8° | 23° | — | — |
| 2001 | 44° | 3° | 24° | — | — |
| 2000 | 65° | 30° | 47° | — | — |
| 1999 | 61° | 12° | 36° | — | — |
| 1998 | 52° | 18° | 35° | — | — |
| 1997 | 30° | -4° | 13° | — | — |
| 1996 | 62° | 20° | 41° | — | — |
| 1995 | 63° | 23° | 43° | — | — |
| 1994 | 61° | 12° | 36° | — | — |
| 1993 | 30° | 6° | 18° | — | — |
| 1992 | 35° | -9° | 13° | 0.18" | — |
| 1991 | 46° | 20° | 33° | — | — |
| 1990 | 60° | 20° | 40° | — | — |
| 1989 | 43° | -3° | 20° | — | — |
| 1988 | 46° | 14° | 30° | — | — |
| 1987 | 37° | 15° | 26° | 0.15" | — |
| 1986 | 55° | 22° | 38° | — | — |
| 1985 | 43° | 8° | 25° | — | — |
| 1984 | 12° | -7° | 3° | — | 0.5" |
| 1983 | 38° | 19° | 28° | — | — |
| 1982 | 51° | 17° | 34° | — | — |
| 1981 | 48° | 16° | 32° | — | — |
| 1980 | 52° | 30° | 41° | — | — |
| 1979 | 38° | -4° | 17° | — | — |
| 1978 | 40° | 16° | 28° | — | — |
| 1977 | 42° | 8° | 25° | — | — |
| 1976 | 51° | 10° | 31° | — | — |
| 1975warmest | 61° | 43° | 52° | — | — |
| 1974 | 54° | 29° | 41° | — | — |
| 1973 | 59° | 26° | 43° | — | — |
| 1972 | 15° | -12° | 2° | — | — |
| 1971 | 41° | 21° | 31° | — | — |
56 years of data from LONGMONT 2 ESE