Weather on October 12
Boulder, CO
55 Years of Data
Avg High
68°F
Avg Low
39°F
Warmest
1996
68°F avg
Coldest
1986
29°F avg
About This Date
October 12th in Boulder, CO typically brings mild fall weather, with average highs around 68°F and lows near 39°F — a 29°F daily swing. Over 55 years of records, the warmest October 12th was in 1996 (68°F average), while the coldest was 1986 (29°F) — a 39°F range across recorded history. Precipitation has occurred on 15% of recorded October 12th dates, with snow falling 4% of the time. The last decade has been 1.5°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.5°F cooler on this date compared to 20-30 years ago.
Planning for October 12th in Boulder, CO? Great weather for outdoor activities.
Cooling Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 68° | 48° | 58° | — | — |
| 2024 | 81° | 48° | 64° | — | — |
| 2023 | 59° | 41° | 50° | — | — |
| 2022 | 70° | 37° | 53° | — | — |
| 2021 | 50° | 36° | 43° | — | — |
| 2020 | 73° | 50° | 62° | — | — |
| 2019 | 64° | 30° | 47° | — | — |
| 2018 | 61° | 34° | 47° | — | — |
| 2017 | 78° | 40° | 59° | — | — |
| 2016 | 66° | 35° | 51° | 0.41" | — |
| 2015 | 78° | 41° | 60° | — | — |
| 2014 | 67° | 44° | 55° | 0.05" | — |
| 2013 | 56° | 41° | 48° | — | — |
| 2012 | 63° | 31° | 47° | — | — |
| 2011 | 69° | 40° | 54° | — | — |
| 2010 | 57° | 41° | 49° | 1.35" | — |
| 2009 | 46° | 23° | 35° | — | — |
| 2008 | 39° | 35° | 37° | 0.81" | — |
| 2007 | 67° | 41° | 54° | — | — |
| 2006 | 62° | 35° | 49° | — | — |
| 2005 | 61° | 37° | 49° | — | — |
| 2004 | 70° | 37° | 53° | — | — |
| 2003 | 81° | 36° | 58° | — | — |
| 2002 | 71° | 31° | 51° | — | — |
| 2001 | 57° | 40° | 48° | — | — |
| 2000 | 68° | 43° | 55° | — | — |
| 1999 | 81° | 51° | 66° | — | — |
| 1998 | 70° | 33° | 51° | — | — |
| 1997 | 68° | 32° | 50° | 0.71" | 0.2" |
| 1996warmest | 85° | 52° | 68° | — | — |
| 1995 | 81° | 54° | 67° | — | — |
| 1994 | 71° | 47° | 59° | — | — |
| 1993 | 64° | 42° | 53° | — | — |
| 1992 | 79° | 40° | 59° | — | — |
| 1991 | 83° | 45° | 64° | — | — |
| 1990 | 67° | 28° | 47° | — | — |
| 1989 | 82° | 37° | 60° | — | — |
| 1988 | 80° | 44° | 62° | — | — |
| 1987 | 78° | 35° | 57° | — | — |
| 1986coldest | 36° | 23° | 29° | 0.46" | 0.5" |
| 1985 | 70° | 36° | 53° | — | — |
| 1984 | 74° | 42° | 58° | 0.51" | — |
| 1983 | 60° | 37° | 49° | — | — |
| 1982 | 56° | 34° | 45° | — | — |
| 1981 | 69° | 41° | 55° | — | — |
| 1980 | 81° | 40° | 60° | — | — |
| 1979 | 71° | 45° | 58° | — | — |
| 1978 | 73° | 52° | 62° | — | — |
| 1977 | 68° | 26° | 47° | — | — |
| 1976 | 66° | 42° | 54° | — | — |
| 1975 | 83° | 39° | 61° | — | — |
| 1974 | 50° | 40° | 45° | 3.05" | — |
| 1973 | 60° | 33° | 47° | — | — |
| 1972 | 77° | 38° | 57° | — | — |
| 1971 | 77° | 52° | 64° | — | — |
55 years of data from BOULDER MUNI AP