Weather on December 31
West Covina, CA
55 Years of Data
Avg High
67°F
Avg Low
44°F
Warmest
1997
67°F avg
Coldest
1988
46°F avg
About This Date
December 31st in West Covina, CA typically brings mild winter weather, with average highs around 67°F and lows near 44°F. Over 53 years of records, the warmest December 31st was in 1997 (67°F average), while the coldest was 1988 (46°F) — a 21°F range across recorded history. Rain or other precipitation has occurred on about 6% of December 31st dates historically. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for December 31st in West Covina, CA? Great weather for outdoor activities.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 67° | 55° | 61° | — | — |
| 2024 | 62° | 43° | 52° | — | — |
| 2022 | 59° | 55° | 57° | — | — |
| 2021 | 62° | 47° | 55° | — | — |
| 2020 | 68° | 45° | 56° | — | — |
| 2019 | 74° | 51° | 62° | — | — |
| 2018 | 63° | 48° | 55° | — | — |
| 2017 | 72° | 47° | 59° | — | — |
| 2015 | 67° | 42° | 54° | — | — |
| 2014 | 60° | 42° | 51° | — | — |
| 2013 | 77° | 52° | 64° | — | — |
| 2012 | 63° | 37° | 50° | — | — |
| 2011 | 84° | 45° | 64° | — | — |
| 2010 | 58° | 38° | 48° | — | — |
| 2009 | 71° | 46° | 59° | — | — |
| 2008 | 72° | 44° | 58° | — | — |
| 2007 | 76° | 45° | 60° | — | — |
| 2006 | 64° | 46° | 55° | — | — |
| 2005 | 58° | 46° | 52° | — | — |
| 2004 | 59° | 43° | 51° | — | — |
| 2003 | 69° | 47° | 58° | — | — |
| 2002 | 62° | 44° | 53° | — | — |
| 2001 | 58° | 51° | 54° | — | — |
| 2000 | 74° | 53° | 63° | — | — |
| 1999 | 53° | 46° | 50° | — | — |
| 1998 | 61° | 45° | 53° | — | — |
| 1997warmest | 79° | 56° | 67° | — | — |
| 1996 | 70° | 53° | 61° | — | — |
| 1995 | 68° | 48° | 58° | — | — |
| 1994 | 63° | 44° | 53° | — | — |
| 1993 | 74° | 51° | 62° | — | — |
| 1992 | 68° | 38° | 53° | — | — |
| 1991 | 64° | 41° | 53° | — | — |
| 1990 | 71° | 33° | 52° | — | — |
| 1989 | 75° | 39° | 57° | — | — |
| 1988coldest | 58° | 35° | 46° | — | — |
| 1987 | 65° | 31° | 48° | — | — |
| 1986 | 70° | 40° | 55° | — | — |
| 1985 | 74° | 50° | 62° | — | — |
| 1984 | 70° | 37° | 53° | — | — |
| 1983 | 78° | 47° | 62° | — | — |
| 1982 | 66° | 32° | 49° | — | — |
| 1981 | 60° | 52° | 56° | 0.03" | — |
| 1980 | 83° | 47° | 65° | — | — |
| 1979 | 73° | 49° | 61° | — | — |
| 1978 | 66° | 33° | 50° | — | — |
| 1977 | 64° | 47° | 55° | — | — |
| 1976 | 63° | 49° | 56° | 0.2" | — |
| 1975 | 61° | 41° | 51° | — | — |
| 1974 | 59° | 40° | 49° | 0.08" | — |
| 1973 | 64° | 40° | 52° | — | — |
| 1972 | 63° | 32° | 47° | — | — |
| 1971 | 66° | 34° | 50° | — | — |
53 years of data from SANTA FE DAM CALIFORNIA