Weather on October 31
Longmont, CO
55 Years of Data
About This Date
October 31st in Longmont, CO typically brings cool fall weather, with average highs around 55°F and lows near 29°F — a 26°F daily swing. Over 55 years of records, the warmest October 31st was in 2016 (65°F average), while the coldest was 1991 (11°F) — a 54°F range across recorded history. Precipitation has occurred on 27% of recorded October 31st dates, with snow falling 4% 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 October 31st in Longmont, CO? Bring layers as temperatures can vary throughout the day.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 55° | 29° | 42° | — | — |
| 2024 | 45° | 32° | 38° | 0.08" | — |
| 2023 | 42° | 11° | 26° | — | — |
| 2022 | 62° | 29° | 45° | — | — |
| 2021 | 72° | 35° | 53° | — | — |
| 2020 | 68° | 29° | 48° | — | — |
| 2019 | 24° | 4° | 14° | — | — |
| 2018 | 44° | 34° | 39° | 0.51" | — |
| 2017 | 35° | 26° | 31° | 0.05" | 0.3" |
| 2016warmest | 78° | 52° | 65° | — | — |
| 2015 | 67° | 34° | 50° | — | — |
| 2014 | 57° | 29° | 43° | — | — |
| 2013 | 55° | 29° | 42° | — | — |
| 2012 | 71° | 40° | 55° | — | — |
| 2011 | 73° | 35° | 54° | — | — |
| 2010 | 65° | 38° | 51° | — | — |
| 2009 | 61° | 38° | 49° | — | — |
| 2008 | 75° | 40° | 57° | — | — |
| 2007 | 64° | 33° | 49° | 0.15" | — |
| 2006 | 39° | 23° | 31° | — | — |
| 2005 | 57° | 28° | 43° | 0.1" | — |
| 2004 | 60° | 28° | 44° | — | — |
| 2003 | 29° | 23° | 26° | 0.25" | — |
| 2002 | 20° | 10° | 15° | 0.1" | 0.5" |
| 2001 | 70° | 32° | 51° | — | — |
| 2000 | 63° | 27° | 45° | — | — |
| 1999 | 66° | 35° | 51° | — | — |
| 1998 | 45° | 31° | 38° | 0.2" | — |
| 1997 | 67° | 41° | 54° | — | — |
| 1996 | 39° | 25° | 32° | — | — |
| 1995 | — | 29° | — | — | — |
| 1994 | 44° | 20° | 32° | — | — |
| 1993 | 38° | 15° | 26° | — | — |
| 1992 | 56° | 36° | 46° | 0.03" | — |
| 1991coldest | 19° | 3° | 11° | — | — |
| 1990 | 77° | 38° | 57° | — | — |
| 1989 | 52° | 23° | 37° | — | — |
| 1988 | 72° | 25° | 48° | — | — |
| 1987 | 63° | 44° | 53° | 1.17" | — |
| 1986 | 71° | 40° | 55° | 0.13" | — |
| 1985 | 60° | 38° | 49° | 0.28" | — |
| 1984 | 35° | 26° | 31° | — | — |
| 1983 | 73° | 37° | 55° | — | — |
| 1982 | 60° | 34° | 47° | — | — |
| 1981 | 49° | 28° | 38° | 0.08" | — |
| 1980 | 68° | 34° | 51° | — | — |
| 1979 | 38° | 19° | 28° | — | — |
| 1978 | 50° | 29° | 39° | — | — |
| 1977 | 64° | 32° | 48° | — | — |
| 1976 | 54° | 25° | 39° | — | — |
| 1975 | 76° | 36° | 56° | — | — |
| 1974 | 48° | 27° | 37° | 0.41" | — |
| 1973 | 56° | 37° | 46° | — | — |
| 1972 | 25° | 18° | 21° | 0.03" | — |
| 1971 | 45° | 21° | 33° | — | — |
Longmont, CO Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Longmont, CO Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Longmont, CO Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Longmont, CO
Longmont, CO has no months that meet our "pleasant" threshold — every season has tradeoffs.