Weather on December 31
Mission Viejo, CA
55 Years of Data
Avg High
64°F
Avg Low
47°F
Warmest
2011
66°F avg
Coldest
1988
44°F avg
About This Date
December 31st in Mission Viejo, CA typically brings mild winter weather, with average highs around 64°F and lows near 47°F. Over 55 years of records, the warmest December 31st was in 2011 (66°F average), while the coldest was 1988 (44°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 9% of December 31st dates historically, with the wettest December 31st recording 0.79" of rain. 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 Mission Viejo, CA? Great weather for outdoor activities.
Warming Trend
0.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 73° | 57° | 65° | — | — |
| 2024 | 62° | 44° | 53° | — | — |
| 2023 | 62° | 49° | 55° | 0.13" | — |
| 2022 | 58° | 54° | 56° | — | — |
| 2021 | 60° | 49° | 54° | — | — |
| 2020 | 66° | 46° | 56° | — | — |
| 2019 | 70° | 53° | 61° | — | — |
| 2018 | 60° | 50° | 55° | — | — |
| 2017 | 70° | 49° | 59° | — | — |
| 2016 | 53° | 46° | 50° | — | — |
| 2015 | 65° | 46° | 55° | — | — |
| 2014 | 52° | 37° | 44° | — | — |
| 2013 | 72° | 52° | 62° | — | — |
| 2012 | 58° | 39° | 48° | — | — |
| 2011warmest | 79° | 53° | 66° | — | — |
| 2010 | 55° | 36° | 45° | — | — |
| 2009 | 71° | 46° | 59° | — | — |
| 2008 | 71° | 50° | 61° | — | — |
| 2007 | 79° | 44° | 61° | — | — |
| 2006 | 64° | 44° | 54° | — | — |
| 2005 | 59° | 48° | 54° | — | — |
| 2004 | 59° | 45° | 52° | — | — |
| 2003 | 67° | 45° | 56° | — | — |
| 2002 | 60° | 46° | 53° | — | — |
| 2001 | 60° | 51° | 56° | — | — |
| 2000 | 75° | 50° | 63° | — | — |
| 1999 | 54° | 46° | 50° | — | — |
| 1998 | 60° | 43° | 51° | — | — |
| 1997 | 75° | 54° | 64° | — | — |
| 1996 | 65° | 55° | 60° | 0.05" | — |
| 1995 | 72° | 50° | 61° | — | — |
| 1994 | 61° | 44° | 52° | — | — |
| 1993 | 79° | 49° | 64° | — | — |
| 1992 | 63° | 44° | 53° | — | — |
| 1991 | 66° | 47° | 56° | — | — |
| 1990 | 67° | 40° | 53° | — | — |
| 1989 | 70° | 45° | 57° | — | — |
| 1988coldest | 51° | 38° | 44° | 0.79" | — |
| 1987 | 59° | 37° | 48° | — | — |
| 1986 | 64° | 43° | 53° | — | — |
| 1985 | 63° | 50° | 56° | — | — |
| 1984 | 66° | 46° | 56° | — | — |
| 1983 | 77° | 49° | 63° | — | — |
| 1982 | 64° | 42° | 53° | — | — |
| 1981 | 57° | 50° | 54° | 0.13" | — |
| 1980 | 73° | 53° | 63° | — | — |
| 1979 | 70° | 52° | 61° | — | — |
| 1978 | 63° | 45° | 54° | — | — |
| 1977 | 62° | 52° | 57° | — | — |
| 1976 | 63° | 48° | 55° | 0.15" | — |
| 1975 | 59° | 41° | 50° | — | — |
| 1974 | 54° | 44° | 49° | — | — |
| 1973 | 61° | 41° | 51° | — | — |
| 1972 | 62° | 43° | 52° | — | — |
| 1971 | 65° | 53° | 59° | — | — |
55 years of data from EL TORO MCAS