Weather on October 27
Boulder, CO
55 Years of Data
Avg High
61°F
Avg Low
35°F
Warmest
2016
62°F avg
Coldest
2019
26°F avg
About This Date
October 27th in Boulder, CO typically brings mild fall weather, with average highs around 61°F and lows near 35°F — a 26°F daily swing. Over 55 years of records, the warmest October 27th was in 2016 (62°F average), while the coldest was 2019 (26°F) — a 36°F range across recorded history. Precipitation has occurred on 15% of recorded October 27th dates, with snow falling 4% of the time (heaviest snowfall: 2"). The last decade has been 4.8°F cooler on this date compared to 20-30 years ago.
The last decade has been 4.8°F cooler on this date compared to 20-30 years ago.
Planning for October 27th in Boulder, CO? Great weather for outdoor activities.
Cooling Trend
1.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 59° | 39° | 49° | — | — |
| 2024 | 72° | 41° | 56° | — | — |
| 2023 | 41° | 28° | 35° | — | — |
| 2022 | 46° | 36° | 41° | 0.23" | — |
| 2021 | 57° | 39° | 48° | — | — |
| 2020 | 43° | 10° | 27° | — | — |
| 2019coldest | 32° | 19° | 26° | — | — |
| 2018 | 73° | 45° | 59° | — | — |
| 2017 | 45° | 30° | 38° | — | — |
| 2016warmest | 82° | 43° | 62° | — | — |
| 2015 | 63° | 40° | 51° | — | — |
| 2014 | 68° | 43° | 55° | — | — |
| 2013 | 71° | 35° | 53° | — | — |
| 2012 | 50° | 22° | 36° | — | — |
| 2011 | 45° | 14° | 29° | — | — |
| 2010 | 51° | 32° | 42° | — | — |
| 2009 | 63° | 37° | 50° | 0.03" | — |
| 2008 | 59° | 23° | 41° | — | — |
| 2007 | 49° | 35° | 42° | 0.28" | — |
| 2006 | 55° | 30° | 43° | — | — |
| 2005 | 61° | 33° | 47° | — | — |
| 2004 | 59° | 35° | 47° | — | — |
| 2003 | 67° | 47° | 57° | — | — |
| 2002 | 52° | 40° | 46° | 0.05" | — |
| 2001 | 77° | 34° | 55° | — | — |
| 2000 | 58° | 33° | 45° | — | — |
| 1999 | 75° | 42° | 59° | — | — |
| 1998 | 57° | 41° | 49° | 0.25" | — |
| 1997 | 64° | 23° | 44° | — | — |
| 1996 | 51° | 29° | 40° | — | — |
| 1995 | 60° | 43° | 51° | — | — |
| 1994 | 73° | 43° | 58° | — | — |
| 1993 | 62° | 24° | 43° | — | — |
| 1992 | 68° | 46° | 57° | — | — |
| 1991 | 60° | 34° | 47° | — | — |
| 1990 | 65° | 40° | 52° | — | — |
| 1989 | 60° | 30° | 45° | — | — |
| 1988 | 66° | 37° | 52° | — | — |
| 1987 | 64° | 29° | 46° | — | — |
| 1986 | 61° | 39° | 50° | — | — |
| 1985 | 74° | 35° | 54° | — | — |
| 1984 | 56° | 39° | 47° | — | — |
| 1983 | 79° | 37° | 58° | — | — |
| 1982 | 62° | 35° | 49° | 0.56" | — |
| 1981 | 66° | 44° | 55° | — | — |
| 1980 | 40° | 30° | 35° | 0.46" | 2" |
| 1979 | 68° | 39° | 54° | — | — |
| 1978 | 66° | 37° | 52° | — | — |
| 1977 | 75° | 41° | 58° | — | — |
| 1976 | 42° | 31° | 36° | 0.3" | 0.3" |
| 1975 | 66° | 45° | 55° | — | — |
| 1974 | 63° | 39° | 51° | — | — |
| 1973 | 62° | 29° | 45° | — | — |
| 1972 | 66° | 37° | 52° | — | — |
| 1971 | 61° | 46° | 53° | — | — |
55 years of data from BOULDER MUNI AP