Weather on December 1
Mission Viejo, CA
55 Years of Data
Avg High
70°F
Avg Low
49°F
Warmest
1977
70°F avg
Coldest
1973
48°F avg
About This Date
December 1st in Mission Viejo, 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 1st was in 1977 (70°F average), while the coldest was 1973 (48°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 7% of December 1st dates historically, with the wettest December 1st recording 3.18" of rain. The last decade has been 4.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.5°F warmer on this date compared to 20-30 years ago.
Planning for December 1st 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 | 69° | 50° | 60° | — | — |
| 2024 | 76° | 55° | 65° | — | — |
| 2023 | 67° | 49° | 58° | — | — |
| 2022 | 59° | 49° | 54° | — | — |
| 2021 | 85° | 50° | 67° | — | — |
| 2020 | 77° | 57° | 67° | — | — |
| 2019 | 66° | 50° | 58° | — | — |
| 2018 | 64° | 49° | 56° | — | — |
| 2017 | 77° | 55° | 66° | — | — |
| 2016 | 65° | 48° | 56° | — | — |
| 2015 | 69° | 48° | 59° | — | — |
| 2014 | 69° | 55° | 62° | — | — |
| 2013 | 81° | 60° | 70° | — | — |
| 2012 | 67° | 57° | 62° | — | — |
| 2011 | 64° | 52° | 58° | — | — |
| 2010 | 75° | 49° | 62° | — | — |
| 2009 | 70° | 49° | 59° | — | — |
| 2008 | 79° | 51° | 65° | — | — |
| 2007 | 57° | 44° | 51° | — | — |
| 2006 | 76° | 50° | 63° | — | — |
| 2005 | 70° | 52° | 61° | — | — |
| 2004 | 62° | 42° | 52° | — | — |
| 2003 | 70° | 51° | 60° | — | — |
| 2002 | 68° | 48° | 58° | — | — |
| 2001 | 66° | 46° | 56° | — | — |
| 2000 | 65° | 45° | 55° | — | — |
| 1999 | 66° | 49° | 57° | — | — |
| 1998 | 60° | 45° | 52° | 3.18" | — |
| 1997 | 66° | 49° | 57° | — | — |
| 1996 | 64° | 45° | 54° | — | — |
| 1995 | 74° | 53° | 63° | — | — |
| 1994 | 72° | 49° | 60° | — | — |
| 1993 | 76° | 52° | 64° | — | — |
| 1992 | 73° | 49° | 61° | — | — |
| 1991 | 63° | 47° | 55° | — | — |
| 1990 | 69° | 46° | 58° | — | — |
| 1989 | 73° | 48° | 61° | — | — |
| 1988 | 78° | 51° | 65° | — | — |
| 1987 | 63° | 42° | 52° | — | — |
| 1986 | 77° | 50° | 64° | — | — |
| 1985 | 64° | 46° | 55° | — | — |
| 1984 | 67° | 48° | 57° | — | — |
| 1983 | 68° | 52° | 60° | 0.13" | — |
| 1982 | 60° | 45° | 52° | — | — |
| 1981 | 70° | 45° | 57° | — | — |
| 1980 | 65° | 50° | 57° | — | — |
| 1979 | 82° | 58° | 70° | — | — |
| 1978 | 60° | 48° | 54° | 0.03" | — |
| 1977warmest | 81° | 60° | 70° | — | — |
| 1976 | 83° | 50° | 66° | — | — |
| 1975 | 73° | 45° | 59° | — | — |
| 1974 | 66° | 49° | 57° | — | — |
| 1973coldest | 56° | 40° | 48° | 0.15" | — |
| 1972 | 78° | 53° | 66° | — | — |
| 1971 | 75° | 47° | 61° | — | — |
55 years of data from EL TORO MCAS