Weather on October 11
Boulder, CO
55 Years of Data
Avg High
69°F
Avg Low
40°F
Warmest
1996
70°F avg
Coldest
2009
26°F avg
About This Date
October 11th in Boulder, CO typically brings mild fall weather, with average highs around 69°F and lows near 40°F — a 29°F daily swing. Over 55 years of records, the warmest October 11th was in 1996 (70°F average), while the coldest was 2009 (26°F) — a 44°F range across recorded history. Precipitation has occurred on 22% of recorded October 11th dates, with snow falling 2% of the time (heaviest snowfall: 6.5"). The last decade has been 2.6°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.6°F cooler on this date compared to 20-30 years ago.
Planning for October 11th in Boulder, CO? Great weather for outdoor activities.
Cooling Trend
0.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 64° | 52° | 58° | — | — |
| 2024 | 70° | 52° | 61° | — | — |
| 2023 | 70° | 48° | 59° | — | — |
| 2022 | 77° | 43° | 60° | — | — |
| 2021 | 70° | 41° | 55° | — | — |
| 2020 | 72° | 46° | 59° | — | — |
| 2019 | 52° | 19° | 36° | — | — |
| 2018 | 41° | 34° | 37° | — | — |
| 2017 | 70° | 31° | 50° | — | — |
| 2016 | 78° | 52° | 65° | — | — |
| 2015 | 86° | 54° | 70° | — | — |
| 2014 | 70° | 39° | 54° | 0.03" | — |
| 2013 | 63° | 43° | 53° | 0.15" | — |
| 2012 | 64° | 41° | 53° | — | — |
| 2011 | 69° | 45° | 57° | — | — |
| 2010 | 70° | 43° | 56° | 0.25" | — |
| 2009coldest | 29° | 23° | 26° | — | — |
| 2008 | 45° | 35° | 40° | 0.64" | — |
| 2007 | 77° | 43° | 60° | — | — |
| 2006 | 65° | 35° | 50° | — | — |
| 2005 | 54° | 34° | 44° | 0.41" | — |
| 2004 | 61° | 38° | 49° | — | — |
| 2003 | 73° | 37° | 55° | 0.03" | — |
| 2002 | 77° | 50° | 64° | — | — |
| 2001 | 70° | 31° | 50° | — | — |
| 2000 | 71° | 37° | 54° | — | — |
| 1999 | 83° | 40° | 61° | — | — |
| 1998 | 67° | 40° | 53° | — | — |
| 1997 | 80° | 52° | 66° | — | — |
| 1996warmest | 87° | 53° | 70° | — | — |
| 1995 | 81° | 46° | 63° | — | — |
| 1994 | 77° | 39° | 58° | — | — |
| 1993 | 66° | 35° | 51° | — | — |
| 1992 | 80° | 43° | 61° | — | — |
| 1991 | 79° | 50° | 64° | — | — |
| 1990 | 63° | 40° | 51° | 0.03" | — |
| 1989 | 85° | 38° | 61° | — | — |
| 1988 | 76° | 39° | 57° | — | — |
| 1987 | 70° | 26° | 48° | — | — |
| 1986 | 46° | 28° | 37° | 3.2" | 6.5" |
| 1985 | 60° | 43° | 51° | 0.43" | — |
| 1984 | 76° | 41° | 58° | — | — |
| 1983 | 51° | 39° | 45° | 0.25" | — |
| 1982 | 55° | 27° | 41° | — | — |
| 1981 | 73° | 41° | 57° | — | — |
| 1980 | 67° | 35° | 51° | — | — |
| 1979 | 83° | 45° | 64° | — | — |
| 1978 | 75° | 48° | 62° | — | — |
| 1977 | 53° | 20° | 36° | 0.03" | — |
| 1976 | 77° | 57° | 67° | — | — |
| 1975 | 82° | 46° | 64° | — | — |
| 1974 | 72° | 47° | 59° | 0.41" | — |
| 1973 | 54° | 30° | 42° | — | — |
| 1972 | 78° | 45° | 61° | — | — |
| 1971 | 80° | 45° | 62° | — | — |
55 years of data from BOULDER MUNI AP