Weather on November 18
Longmont, CO
55 Years of Data
Avg High
55°F
Avg Low
24°F
Warmest
2008
62°F avg
Coldest
1996
17°F avg
About This Date
November 18th in Longmont, CO typically brings cool fall weather, with average highs around 55°F and lows near 24°F — a 31°F daily swing. Over 55 years of records, the warmest November 18th was in 2008 (62°F average), while the coldest was 1996 (17°F) — a 45°F range across recorded history. Precipitation has occurred on 11% of recorded November 18th dates, with snow falling 9% of the time (heaviest snowfall: 2.5"). 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 18th in Longmont, CO? Bring layers as temperatures can vary throughout the day.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 61° | 39° | 50° | — | — |
| 2024 | 56° | 23° | 39° | — | — |
| 2023 | 60° | 29° | 44° | — | — |
| 2022 | 25° | 11° | 18° | 0.61" | 2.5" |
| 2021 | 40° | 17° | 28° | — | — |
| 2020 | 68° | 31° | 49° | — | — |
| 2019 | 65° | 29° | 47° | — | — |
| 2018 | 33° | 15° | 24° | 0.41" | 0.5" |
| 2017 | 66° | 27° | 46° | 0.15" | — |
| 2016 | 37° | 16° | 26° | 0.25" | 1.4" |
| 2015 | 54° | 31° | 42° | — | — |
| 2014 | 47° | 23° | 35° | — | — |
| 2013 | 65° | 26° | 45° | — | — |
| 2012 | 62° | 35° | 49° | — | — |
| 2011 | 67° | 41° | 54° | — | — |
| 2010 | 66° | 26° | 46° | — | — |
| 2009 | 58° | 29° | 43° | — | — |
| 2008warmest | 78° | 47° | 62° | — | — |
| 2007 | 69° | 44° | 57° | — | — |
| 2006 | 55° | 30° | 43° | — | — |
| 2005 | 59° | 22° | 40° | — | — |
| 2004 | 57° | 39° | 48° | — | — |
| 2003 | 57° | 23° | 40° | — | — |
| 2002 | 63° | 28° | 45° | — | — |
| 2001 | 67° | 29° | 48° | — | — |
| 2000 | 31° | 9° | 20° | — | — |
| 1999 | 78° | 27° | 52° | — | — |
| 1998 | 56° | 25° | 40° | — | — |
| 1997 | 43° | 14° | 28° | — | — |
| 1996coldest | 35° | -2° | 17° | — | — |
| 1995 | 65° | 25° | 45° | — | — |
| 1994 | 40° | 16° | 28° | — | — |
| 1993 | 42° | 15° | 29° | — | — |
| 1992 | 56° | 25° | 40° | — | — |
| 1991 | 48° | 29° | 38° | 0.53" | 1.6" |
| 1990 | 69° | 25° | 47° | — | — |
| 1989 | 54° | 16° | 35° | — | — |
| 1988 | 47° | 13° | 30° | — | — |
| 1987 | 34° | 13° | 23° | — | — |
| 1986 | 62° | 27° | 44° | — | — |
| 1985 | 37° | 15° | 26° | 0.15" | 0.7" |
| 1984 | 50° | 14° | 32° | — | — |
| 1983 | 69° | 34° | 51° | — | — |
| 1982 | 59° | 23° | 41° | — | — |
| 1981 | 77° | 34° | 55° | — | — |
| 1980 | 43° | 16° | 29° | — | — |
| 1979 | 61° | 27° | 44° | — | — |
| 1978 | 55° | 21° | 38° | — | — |
| 1977 | 45° | 21° | 33° | — | — |
| 1976 | 74° | 29° | 51° | — | — |
| 1975 | 55° | 23° | 39° | — | — |
| 1974 | 60° | 28° | 44° | — | — |
| 1973 | 61° | 23° | 42° | — | — |
| 1972 | 40° | 19° | 29° | — | — |
| 1971 | 35° | 17° | 26° | — | — |
55 years of data from LONGMONT 2 ESE