Weather on December 9
Downey, CA
55 Years of Data
Avg High
70°F
Avg Low
49°F
Warmest
2025
75°F avg
Coldest
1972
42°F avg
About This Date
December 9th in Downey, CA typically brings pleasant winter weather, with average highs around 70°F and lows near 49°F. Over 55 years of records, the warmest December 9th was in 2025 (75°F average), while the coldest was 1972 (42°F) — a 33°F range across recorded history. Rain or other precipitation has occurred on about 4% of December 9th dates historically, with the wettest December 9th recording 1.98" of rain. The last decade has been 4.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.2°F warmer on this date compared to 20-30 years ago.
Planning for December 9th in Downey, CA? Great weather for outdoor activities.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025warmest | 83° | 68° | 75° | — | — |
| 2024 | 68° | 49° | 58° | — | — |
| 2023 | 72° | 56° | 64° | — | — |
| 2022 | 62° | 47° | 54° | — | — |
| 2021 | 54° | 47° | 50° | — | — |
| 2020 | 77° | 52° | 64° | — | — |
| 2019 | 67° | 50° | 58° | — | — |
| 2018 | 70° | 56° | 63° | — | — |
| 2017 | 84° | 65° | 74° | — | — |
| 2016 | 64° | 51° | 58° | — | — |
| 2015 | 77° | 59° | 68° | — | — |
| 2014 | 79° | 59° | 69° | — | — |
| 2013 | 62° | 41° | 52° | — | — |
| 2012 | 69° | 51° | 60° | — | — |
| 2011 | 73° | 52° | 62° | — | — |
| 2010 | 71° | 53° | 62° | — | — |
| 2009 | 61° | 42° | 51° | — | — |
| 2008 | 70° | 48° | 59° | — | — |
| 2007 | 65° | 43° | 54° | — | — |
| 2006 | 69° | 50° | 60° | — | — |
| 2005 | 77° | 51° | 64° | — | — |
| 2004 | 66° | 48° | 57° | — | — |
| 2003 | 70° | 49° | 59° | — | — |
| 2002 | 72° | 52° | 62° | — | — |
| 2001 | 66° | 46° | 56° | — | — |
| 2000 | 65° | 51° | 58° | — | — |
| 1999 | 68° | 50° | 59° | — | — |
| 1998 | 69° | 39° | 54° | — | — |
| 1997 | 69° | 41° | 55° | — | — |
| 1996 | 56° | 49° | 52° | 1.98" | — |
| 1995 | 74° | 50° | 62° | — | — |
| 1994 | 72° | 44° | 58° | — | — |
| 1993 | 68° | 50° | 59° | — | — |
| 1992 | 71° | 47° | 59° | — | — |
| 1991 | 76° | 50° | 63° | — | — |
| 1990 | 82° | 56° | 69° | — | — |
| 1989 | 86° | 42° | 64° | — | — |
| 1988 | 80° | 48° | 64° | — | — |
| 1987 | 70° | 50° | 60° | — | — |
| 1986 | 69° | 47° | 58° | — | — |
| 1985 | 66° | 40° | 53° | — | — |
| 1984 | 69° | 57° | 63° | — | — |
| 1983 | 72° | 50° | 61° | 0.3" | — |
| 1982 | 64° | 52° | 58° | — | — |
| 1981 | 78° | 49° | 63° | — | — |
| 1980 | 69° | 45° | 57° | — | — |
| 1979 | 77° | 46° | 62° | — | — |
| 1978 | 62° | 33° | 48° | — | — |
| 1977 | 70° | 55° | 62° | — | — |
| 1976 | 67° | 42° | 54° | — | — |
| 1975 | 84° | 48° | 66° | — | — |
| 1974 | 70° | 42° | 56° | — | — |
| 1973 | 84° | 48° | 66° | — | — |
| 1972coldest | 50° | 33° | 42° | — | — |
| 1971 | 60° | 37° | 49° | — | — |
55 years of data from MONTEBELLO