Weather on November 9
Boulder, CO
55 Years of Data
Avg High
54°F
Avg Low
31°F
Warmest
1978
62°F avg
Coldest
1985
24°F avg
About This Date
November 9th in Boulder, CO typically brings cool fall weather, with average highs around 54°F and lows near 31°F. Over 55 years of records, the warmest November 9th was in 1978 (62°F average), while the coldest was 1985 (24°F) — a 38°F range across recorded history. Precipitation has occurred on 24% of recorded November 9th dates, with snow falling 13% of the time (heaviest snowfall: 10"). The last decade has been 3.3°F cooler on this date compared to 20-30 years ago.
The last decade has been 3.3°F cooler on this date compared to 20-30 years ago.
Planning for November 9th in Boulder, CO? Bring layers as temperatures can vary throughout the day.
Warming Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 50° | 27° | 38° | — | — |
| 2024 | 45° | 32° | 38° | — | — |
| 2023 | 50° | 30° | 40° | — | — |
| 2022 | 43° | 28° | 36° | — | — |
| 2021 | 54° | 32° | 43° | — | — |
| 2020 | 41° | 28° | 35° | 0.23" | — |
| 2019 | 77° | 43° | 60° | — | — |
| 2018 | 39° | 21° | 30° | — | — |
| 2017 | 41° | 29° | 35° | — | — |
| 2016 | 72° | 32° | 52° | — | — |
| 2015 | 61° | 30° | 45° | — | — |
| 2014 | 73° | 45° | 59° | — | — |
| 2013 | 61° | 36° | 48° | — | — |
| 2012 | 60° | 32° | 46° | — | — |
| 2011 | 46° | 20° | 33° | — | — |
| 2010 | 54° | 33° | 43° | 0.71" | 0.3" |
| 2009 | 56° | 35° | 45° | — | — |
| 2008 | 56° | 29° | 42° | — | — |
| 2007 | 68° | 37° | 53° | — | — |
| 2006 | 69° | 38° | 53° | — | — |
| 2005 | 62° | 30° | 46° | — | — |
| 2004 | 60° | 41° | 51° | — | — |
| 2003 | 55° | 29° | 42° | — | — |
| 2002 | 59° | 43° | 51° | 0.03" | — |
| 2001 | 65° | 25° | 45° | — | — |
| 2000 | 44° | 20° | 32° | — | — |
| 1999 | 68° | 49° | 58° | — | — |
| 1998 | 34° | 26° | 30° | 1.04" | 5.3" |
| 1997 | 39° | 27° | 33° | 1.85" | 3.9" |
| 1996 | 62° | 43° | 52° | — | — |
| 1995 | 63° | 40° | 51° | 0.08" | — |
| 1994 | 41° | 30° | 36° | 0.08" | 0.1" |
| 1993 | 53° | 26° | 40° | — | — |
| 1992 | 52° | 28° | 40° | — | — |
| 1991 | 68° | 42° | 55° | — | — |
| 1990 | 57° | 29° | 43° | — | — |
| 1989 | 59° | 29° | 44° | — | — |
| 1988 | 51° | 37° | 44° | 0.28" | — |
| 1987 | 58° | 27° | 42° | — | — |
| 1986 | 42° | 19° | 31° | — | — |
| 1985coldest | 32° | 16° | 24° | 2.39" | 10" |
| 1984 | 49° | 35° | 42° | — | — |
| 1983 | 43° | 18° | 30° | 0.13" | — |
| 1982 | 39° | 26° | 33° | — | — |
| 1981 | 58° | 29° | 43° | — | — |
| 1980 | 62° | 35° | 49° | — | — |
| 1979 | 45° | 26° | 35° | 0.58" | 2" |
| 1978warmest | 73° | 52° | 62° | — | — |
| 1977 | 41° | 14° | 28° | — | — |
| 1976 | 64° | 40° | 52° | — | — |
| 1975 | 43° | 31° | 37° | 1.12" | 2.1" |
| 1974 | 48° | 32° | 40° | 0.08" | — |
| 1973 | 53° | 32° | 43° | — | — |
| 1972 | 49° | 35° | 42° | — | — |
| 1971 | 62° | 30° | 46° | — | — |
55 years of data from BOULDER MUNI AP