Weather on October 23
Boulder, CO
55 Years of Data
Avg High
63°F
Avg Low
37°F
Warmest
2003
67°F avg
Coldest
2002
27°F avg
About This Date
October 23rd in Boulder, CO typically brings mild fall weather, with average highs around 63°F and lows near 37°F — a 26°F daily swing. Over 55 years of records, the warmest October 23rd was in 2003 (67°F average), while the coldest was 2002 (27°F) — a 40°F range across recorded history. Precipitation has occurred on 18% of recorded October 23rd dates, with snow falling 5% of the time (heaviest snowfall: 4.8"). The last decade has been 1.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.6°F warmer on this date compared to 20-30 years ago.
Planning for October 23rd in Boulder, CO? Great weather for outdoor activities.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 70° | 39° | 54° | — | — |
| 2024 | 73° | 43° | 58° | — | — |
| 2023 | 77° | 43° | 60° | — | — |
| 2022 | 64° | 37° | 51° | — | — |
| 2021 | 68° | 41° | 55° | — | — |
| 2020 | 32° | 23° | 28° | — | — |
| 2019 | 55° | 32° | 44° | — | — |
| 2018 | 59° | 45° | 52° | — | — |
| 2017 | 64° | 40° | 52° | — | — |
| 2016 | 72° | 43° | 57° | — | — |
| 2015 | 58° | 40° | 49° | 0.18" | — |
| 2014 | 76° | 39° | 57° | — | — |
| 2013 | 65° | 39° | 52° | — | — |
| 2012 | 78° | 42° | 60° | — | — |
| 2011 | 76° | 39° | 57° | — | — |
| 2010 | 64° | 43° | 53° | 0.03" | — |
| 2009 | 56° | 29° | 42° | — | — |
| 2008 | 55° | 21° | 38° | — | — |
| 2007 | 69° | 34° | 51° | — | — |
| 2006 | 65° | 33° | 49° | — | — |
| 2005 | 54° | 36° | 45° | — | — |
| 2004 | 68° | 41° | 55° | — | — |
| 2003warmest | 86° | 49° | 67° | — | — |
| 2002coldest | 29° | 26° | 27° | 0.46" | 0.3" |
| 2001 | 69° | 43° | 56° | — | — |
| 2000 | 48° | 37° | 43° | 0.15" | — |
| 1999 | 70° | 35° | 52° | — | — |
| 1998 | 69° | 32° | 51° | 0.05" | — |
| 1997 | 62° | 39° | 51° | — | — |
| 1996 | 57° | 39° | 48° | — | — |
| 1995 | 49° | 29° | 39° | 0.03" | 0.1" |
| 1994 | 68° | 30° | 49° | — | — |
| 1993 | 66° | 40° | 53° | — | — |
| 1992 | 66° | 47° | 56° | — | — |
| 1991 | 58° | 43° | 50° | — | — |
| 1990 | 62° | 35° | 49° | — | — |
| 1989 | 72° | 31° | 51° | — | — |
| 1988 | 71° | 30° | 51° | — | — |
| 1987 | 68° | 35° | 52° | — | — |
| 1986 | 51° | 42° | 47° | 0.1" | — |
| 1985 | 69° | 49° | 59° | — | — |
| 1984 | 44° | 30° | 37° | — | — |
| 1983 | 80° | 38° | 59° | — | — |
| 1982 | 71° | 41° | 56° | — | — |
| 1981 | 55° | 26° | 41° | — | — |
| 1980 | 54° | 29° | 41° | — | — |
| 1979 | 59° | 38° | 48° | — | — |
| 1978 | 57° | 26° | 42° | 0.2" | — |
| 1977 | 68° | 35° | 52° | — | — |
| 1976 | 64° | 40° | 52° | — | — |
| 1975 | 69° | 26° | 48° | 1.47" | 4.8" |
| 1974 | 55° | 41° | 48° | — | — |
| 1973 | 82° | 45° | 63° | — | — |
| 1972 | 58° | 32° | 45° | 0.2" | — |
| 1971 | 63° | 33° | 48° | — | — |
55 years of data from BOULDER MUNI AP