Weather on January 18
Mission Viejo, CA
55 Years of Data
Avg High
69°F
Avg Low
50°F
Warmest
2005
75°F avg
Coldest
1988
48°F avg
About This Date
January 18th in Mission Viejo, CA typically brings mild winter weather, with average highs around 69°F and lows near 50°F. Over 56 years of records, the warmest January 18th was in 2005 (75°F average), while the coldest was 1988 (48°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 7% of January 18th dates historically, with the wettest January 18th recording 3.28" of rain. The last decade has been 2.7°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.7°F cooler on this date compared to 20-30 years ago.
Planning for January 18th in Mission Viejo, CA? Great weather for outdoor activities.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 79° | 59° | 69° | — | — |
| 2025 | 63° | 44° | 53° | — | — |
| 2024 | 67° | 49° | 58° | — | — |
| 2023 | 59° | 42° | 51° | — | — |
| 2022 | 63° | 53° | 58° | — | — |
| 2021 | 79° | 47° | 63° | — | — |
| 2020 | 70° | 49° | 59° | — | — |
| 2019 | 64° | 51° | 58° | — | — |
| 2018 | 75° | 55° | 65° | — | — |
| 2017 | 61° | 45° | 53° | — | — |
| 2016 | 64° | 51° | 58° | — | — |
| 2015 | 73° | 56° | 64° | — | — |
| 2014 | 83° | 62° | 72° | — | — |
| 2013 | 80° | 59° | 70° | — | — |
| 2012 | 66° | 43° | 54° | — | — |
| 2011 | 80° | 59° | 70° | — | — |
| 2010 | 56° | 50° | 53° | — | — |
| 2009 | 86° | 64° | 75° | — | — |
| 2008 | 64° | 46° | 55° | — | — |
| 2007 | 67° | 41° | 54° | — | — |
| 2006 | 65° | 45° | 55° | — | — |
| 2005warmest | 86° | 65° | 75° | — | — |
| 2004 | 66° | 46° | 56° | — | — |
| 2003 | 82° | 53° | 68° | — | — |
| 2002 | 65° | 55° | 60° | — | — |
| 2001 | 64° | 45° | 54° | — | — |
| 2000 | 78° | 63° | 70° | — | — |
| 1999 | 58° | 47° | 52° | — | — |
| 1998 | 66° | 55° | 61° | — | — |
| 1997 | 73° | 47° | 60° | — | — |
| 1996 | 66° | 48° | 57° | — | — |
| 1995 | 64° | 42° | 53° | — | — |
| 1994 | 82° | 56° | 69° | — | — |
| 1993 | 57° | 49° | 53° | 3.28" | — |
| 1992 | 66° | 44° | 55° | — | — |
| 1991 | 71° | 51° | 61° | — | — |
| 1990 | 56° | 42° | 49° | — | — |
| 1989 | 79° | 49° | 64° | — | — |
| 1988coldest | 56° | 40° | 48° | — | — |
| 1987 | 61° | 41° | 51° | — | — |
| 1986 | 84° | 49° | 66° | — | — |
| 1985 | 68° | 44° | 56° | — | — |
| 1984 | 63° | 40° | 51° | — | — |
| 1983 | 66° | 45° | 55° | — | — |
| 1982 | 58° | 46° | 52° | — | — |
| 1981 | 75° | 51° | 63° | — | — |
| 1980 | 68° | 54° | 61° | 0.15" | — |
| 1979 | 56° | 44° | 50° | 0.56" | — |
| 1978 | 64° | 50° | 57° | — | — |
| 1977 | 80° | 58° | 69° | — | — |
| 1976 | 76° | 51° | 63° | — | — |
| 1975 | 78° | 50° | 64° | — | — |
| 1974 | 64° | 53° | 59° | — | — |
| 1973 | 60° | 41° | 51° | 2.74" | — |
| 1972 | 60° | 46° | 53° | — | — |
| 1971 | 89° | 58° | 73° | — | — |
56 years of data from EL TORO MCAS