Weather on June 18
Mission Viejo, CA
55 Years of Data
About This Date
June 18th in Mission Viejo, CA typically brings pleasant summer weather, with average highs around 79°F and lows near 57°F. Over 55 years of records, the warmest June 18th was in 2016 (80°F average), while the coldest was 1975 (60°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 4% of June 18th 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 June 18th in Mission Viejo, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 83° | 56° | 69° | — | — |
| 2024 | 74° | 56° | 65° | — | — |
| 2023 | 72° | 57° | 64° | — | — |
| 2022 | 75° | 56° | 65° | — | — |
| 2021 | 77° | 60° | 69° | — | — |
| 2020 | 73° | 55° | 64° | — | — |
| 2019 | 71° | 57° | 64° | — | — |
| 2018 | 75° | 57° | 66° | — | — |
| 2017 | 84° | 56° | 70° | — | — |
| 2016warmest | 97° | 63° | 80° | — | — |
| 2015 | 83° | 56° | 69° | — | — |
| 2014 | 74° | 52° | 63° | — | — |
| 2013 | 76° | 53° | 64° | — | — |
| 2012 | 82° | 56° | 69° | — | — |
| 2011 | 76° | 55° | 65° | — | — |
| 2010 | 75° | 54° | 64° | — | — |
| 2009 | 78° | 55° | 67° | — | — |
| 2008 | 95° | 55° | 75° | — | — |
| 2007 | 78° | 53° | 66° | — | — |
| 2006 | 82° | 60° | 71° | — | — |
| 2005 | 75° | 53° | 64° | — | — |
| 2004 | 73° | 59° | 66° | — | — |
| 2003 | 70° | 56° | 63° | — | — |
| 2002 | 83° | 54° | 68° | — | — |
| 2001 | 91° | 55° | 73° | — | — |
| 2000 | 77° | 60° | 69° | — | — |
| 1999 | 78° | 55° | 67° | — | — |
| 1998 | 76° | 58° | 67° | — | — |
| 1997 | 77° | 60° | 69° | — | — |
| 1996 | 82° | 58° | 70° | — | — |
| 1995 | 76° | 52° | 64° | — | — |
| 1994 | 84° | 57° | 71° | — | — |
| 1993 | 87° | 65° | 76° | — | — |
| 1992 | 79° | 57° | 68° | — | — |
| 1991 | 72° | 59° | 65° | — | — |
| 1990 | 77° | 62° | 70° | — | — |
| 1989 | 87° | 60° | 74° | — | — |
| 1988 | 73° | 56° | 64° | — | — |
| 1987 | 75° | 51° | 63° | — | — |
| 1986 | 81° | 57° | 69° | — | — |
| 1985 | 80° | 60° | 70° | — | — |
| 1984 | 80° | 63° | 71° | — | — |
| 1983 | 78° | 60° | 69° | — | — |
| 1982 | 64° | 57° | 61° | 0.05" | — |
| 1981 | 90° | 65° | 77° | — | — |
| 1980 | 76° | 58° | 67° | — | — |
| 1979 | 72° | 58° | 65° | — | — |
| 1978 | 84° | 62° | 73° | — | — |
| 1977 | 77° | 56° | 66° | — | — |
| 1976 | 83° | 59° | 71° | — | — |
| 1975coldest | 65° | 55° | 60° | 0.08" | — |
| 1974 | 74° | 49° | 61° | — | — |
| 1973 | 84° | 52° | 68° | — | — |
| 1972 | 78° | 58° | 68° | — | — |
| 1971 | 82° | 60° | 71° | — | — |
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
Mission Viejo, CA has no months that meet our "pleasant" threshold — every season has tradeoffs.