Weather on November 21
Longmont, CO
55 Years of Data
Avg High
52°F
Avg Low
23°F
Warmest
1998
58°F avg
Coldest
1985
15°F avg
About This Date
November 21st in Longmont, CO typically brings cool fall weather, with average highs around 52°F and lows near 23°F — a 29°F daily swing. Over 55 years of records, the warmest November 21st was in 1998 (58°F average), while the coldest was 1985 (15°F) — a 43°F range across recorded history. Precipitation has occurred on 16% of recorded November 21st dates, with snow falling 15% of the time (heaviest snowfall: 7"). 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 November 21st in Longmont, CO? Bring layers as temperatures can vary throughout the day.
Warming Trend
2.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 51° | 40° | 45° | 0.03" | — |
| 2024 | 45° | 22° | 33° | — | — |
| 2023 | 50° | 26° | 38° | — | — |
| 2022 | 47° | 14° | 30° | — | — |
| 2021 | 56° | 24° | 40° | — | — |
| 2020 | 56° | 25° | 40° | — | — |
| 2019 | 52° | 27° | 39° | 0.53" | 0.9" |
| 2018 | 55° | 22° | 38° | — | — |
| 2017 | 71° | 45° | 58° | — | — |
| 2016 | 65° | 39° | 52° | — | — |
| 2015 | 48° | 11° | 29° | 0.23" | 1.6" |
| 2014 | 58° | 30° | 44° | — | — |
| 2013 | 58° | 13° | 35° | 0.64" | 5.8" |
| 2012 | 73° | 37° | 55° | — | — |
| 2011 | 52° | 25° | 38° | — | — |
| 2010 | 51° | 22° | 36° | — | — |
| 2009 | 63° | 29° | 46° | — | — |
| 2008 | 55° | 25° | 40° | — | — |
| 2007 | 35° | 22° | 28° | 1.12" | 5.8" |
| 2006 | 70° | 44° | 57° | — | — |
| 2005 | 59° | 32° | 46° | — | — |
| 2004 | 30° | 19° | 25° | 0.38" | 0.2" |
| 2003 | 74° | 28° | 51° | — | — |
| 2002 | 64° | 30° | 47° | — | — |
| 2001 | 63° | 14° | 38° | — | — |
| 2000 | 47° | 10° | 28° | — | — |
| 1999 | 69° | 29° | 49° | — | — |
| 1998warmest | 65° | 52° | 58° | — | — |
| 1997 | 49° | 20° | 34° | — | — |
| 1996 | 70° | 23° | 46° | — | — |
| 1995 | 51° | 20° | 35° | — | — |
| 1994 | 56° | 21° | 38° | — | — |
| 1993 | 50° | 13° | 31° | — | — |
| 1992 | 36° | 21° | 28° | 1.47" | 4" |
| 1991 | 51° | 16° | 33° | — | — |
| 1990 | 64° | 30° | 47° | — | — |
| 1989 | 62° | 19° | 41° | — | — |
| 1988 | 46° | 12° | 29° | — | — |
| 1987 | 54° | 21° | 37° | — | — |
| 1986 | 57° | 24° | 41° | — | — |
| 1985coldest | 26° | 4° | 15° | — | — |
| 1984 | 54° | 14° | 34° | — | — |
| 1983 | 53° | 21° | 37° | — | — |
| 1982 | 53° | 19° | 36° | — | — |
| 1981 | 50° | 19° | 35° | — | — |
| 1980 | 49° | 17° | 33° | — | — |
| 1979 | 29° | 20° | 24° | 1.5" | 7" |
| 1978 | 23° | 16° | 19° | — | — |
| 1977 | 33° | 3° | 18° | — | — |
| 1976 | 46° | 20° | 33° | — | — |
| 1975 | 32° | 6° | 19° | — | — |
| 1974 | 64° | 25° | 44° | — | — |
| 1973 | 38° | 17° | 27° | — | — |
| 1972 | 28° | 20° | 24° | 0.53" | 3" |
| 1971 | 62° | 22° | 42° | — | — |
55 years of data from LONGMONT 2 ESE