Weather on December 31
Mission Viejo, CA
55 Years of Data
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. 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.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 73° | 57° | 65° | — | — |
| 2024 | 62° | 44° | 53° | — | — |
| 2023 | 62° | 49° | 55° | 0.05" | — |
| 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° | 0.02" | — |
| 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° | 0.31" | — |
| 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° | 0.05" | — |
| 1980 | 73° | 53° | 63° | — | — |
| 1979 | 70° | 52° | 61° | — | — |
| 1978 | 63° | 45° | 54° | — | — |
| 1977 | 62° | 52° | 57° | — | — |
| 1976 | 63° | 48° | 55° | 0.06" | — |
| 1975 | 59° | 41° | 50° | — | — |
| 1974 | 54° | 44° | 49° | — | — |
| 1973 | 61° | 41° | 51° | — | — |
| 1972 | 62° | 43° | 52° | — | — |
| 1971 | 65° | 53° | 59° | — | — |
Mission Viejo, CA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Mission Viejo, CA Monthly Precipitation
Average rainfall per month, in inches.
Mission Viejo, CA Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Mission Viejo, CA
Most pleasant months in Mission Viejo, CA: January, February, March, April, May, June, October, November, December.
What to expect on December 31st
This page shows what actually happened each year. For the odds — typical high and low, and how often it stays dry — see the climatological outlook for this date.
December 31st outlook →