Weather on December 31
Downey, CA
55 Years of Data
Avg High
67°F
Avg Low
47°F
Warmest
1980
70°F avg
Coldest
2014
47°F avg
About This Date
December 31st in Downey, CA typically brings mild winter weather, with average highs around 67°F and lows near 47°F. Over 55 years of records, the warmest December 31st was in 1980 (70°F average), while the coldest was 2014 (47°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 11% of December 31st dates historically, with the wettest December 31st recording 1.04" of rain. The last decade has been 2.3°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.3°F cooler on this date compared to 20-30 years ago.
Planning for December 31st in Downey, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 70° | 53° | 61° | — | — |
| 2024 | 59° | 44° | 52° | — | — |
| 2023 | 61° | 52° | 56° | 0.08" | — |
| 2022 | 57° | 53° | 55° | — | — |
| 2021 | 58° | 48° | 53° | — | — |
| 2020 | 67° | 48° | 57° | — | — |
| 2019 | 72° | 56° | 64° | — | — |
| 2018 | 59° | 48° | 54° | — | — |
| 2017 | 69° | 52° | 60° | — | — |
| 2016 | 59° | 47° | 53° | 0.23" | — |
| 2015 | 68° | 44° | 56° | — | — |
| 2014coldest | 55° | 39° | 47° | — | — |
| 2013 | 68° | 43° | 55° | — | — |
| 2012 | 62° | 42° | 52° | — | — |
| 2011 | 81° | 56° | 68° | — | — |
| 2010 | 57° | 39° | 48° | — | — |
| 2009 | 69° | 45° | 57° | — | — |
| 2008 | 69° | 52° | 60° | — | — |
| 2007 | 75° | 49° | 62° | — | — |
| 2006 | 66° | 41° | 54° | — | — |
| 2005 | 68° | 48° | 58° | — | — |
| 2004 | 55° | 46° | 51° | — | — |
| 2003 | 76° | 39° | 57° | — | — |
| 2002 | 60° | 48° | 54° | — | — |
| 2001 | 58° | 51° | 54° | — | — |
| 2000 | 74° | 53° | 63° | — | — |
| 1999 | 64° | 50° | 57° | 1.04" | — |
| 1998 | 79° | 49° | 64° | — | — |
| 1997 | 79° | 57° | 68° | — | — |
| 1996 | 68° | 55° | 62° | — | — |
| 1995 | 65° | 49° | 57° | — | — |
| 1994 | 65° | 45° | 55° | — | — |
| 1993 | 73° | 49° | 61° | — | — |
| 1992 | 62° | 45° | 53° | — | — |
| 1991 | 60° | 50° | 55° | — | — |
| 1990 | 70° | 42° | 56° | — | — |
| 1989 | 76° | 42° | 59° | — | — |
| 1988 | 60° | 40° | 50° | 1.02" | — |
| 1987 | 64° | 36° | 50° | — | — |
| 1986 | 72° | 44° | 58° | — | — |
| 1985 | 72° | 54° | 63° | — | — |
| 1984 | 70° | 56° | 63° | — | — |
| 1983 | 78° | 50° | 64° | — | — |
| 1982 | 66° | 42° | 54° | — | — |
| 1981 | 59° | 50° | 55° | — | — |
| 1980warmest | 87° | 54° | 70° | — | — |
| 1979 | 72° | 54° | 63° | — | — |
| 1978 | 64° | 37° | 51° | — | — |
| 1977 | 61° | 52° | 56° | — | — |
| 1976 | 63° | 52° | 57° | 0.58" | — |
| 1975 | 65° | 44° | 54° | 0.03" | — |
| 1974 | 60° | 43° | 51° | — | — |
| 1973 | 61° | 42° | 51° | — | — |
| 1972 | 65° | 36° | 50° | — | — |
| 1971 | 67° | 36° | 51° | — | — |
55 years of data from MONTEBELLO