Weather on May 17
Mission Viejo, CA
55 Years of Data
Avg High
73°F
Avg Low
55°F
Warmest
2008
83°F avg
Coldest
2010
56°F avg
About This Date
May 17th in Mission Viejo, CA typically brings pleasant spring weather, with average highs around 73°F and lows near 55°F. Over 55 years of records, the warmest May 17th was in 2008 (83°F average), while the coldest was 2010 (56°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 2% of May 17th dates historically, with the wettest May 17th recording 0.66" of rain. The last decade has been 4.0°F cooler on this date compared to 20-30 years ago.
The last decade has been 4.0°F cooler on this date compared to 20-30 years ago.
Planning for May 17th in Mission Viejo, CA? Great weather for outdoor activities.
Cooling Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 63° | 54° | 58° | — | — |
| 2024 | 66° | 56° | 61° | — | — |
| 2023 | 73° | 54° | 63° | — | — |
| 2022 | 70° | 56° | 63° | — | — |
| 2021 | 63° | 54° | 58° | — | — |
| 2020 | 75° | 58° | 66° | — | — |
| 2019 | 68° | 50° | 59° | — | — |
| 2018 | 70° | 50° | 60° | — | — |
| 2017 | 62° | 50° | 56° | — | — |
| 2016 | 67° | 58° | 62° | — | — |
| 2015 | 70° | 51° | 60° | — | — |
| 2014 | 81° | 58° | 69° | — | — |
| 2013 | 70° | 58° | 64° | — | — |
| 2012 | 75° | 55° | 65° | — | — |
| 2011 | 64° | 48° | 56° | — | — |
| 2010coldest | 63° | 50° | 56° | — | — |
| 2009 | 79° | 52° | 65° | — | — |
| 2008warmest | 97° | 69° | 83° | — | — |
| 2007 | 72° | 55° | 63° | — | — |
| 2006 | 63° | 57° | 60° | — | — |
| 2005 | 77° | 53° | 65° | — | — |
| 2004 | 73° | 58° | 65° | — | — |
| 2003 | 76° | 52° | 64° | — | — |
| 2002 | 73° | 55° | 64° | — | — |
| 2001 | 74° | 56° | 65° | — | — |
| 2000 | 70° | 47° | 58° | — | — |
| 1999 | 80° | 50° | 65° | — | — |
| 1998 | 74° | 50° | 62° | — | — |
| 1997 | 78° | 63° | 70° | — | — |
| 1996 | 76° | 60° | 68° | — | — |
| 1995 | 71° | 53° | 62° | — | — |
| 1994 | 63° | 52° | 57° | 0.66" | — |
| 1993 | 76° | 59° | 67° | — | — |
| 1992 | 78° | 60° | 69° | — | — |
| 1991 | 77° | 57° | 67° | — | — |
| 1990 | 72° | 58° | 65° | — | — |
| 1989 | 69° | 59° | 64° | — | — |
| 1988 | 66° | 55° | 61° | — | — |
| 1987 | 70° | 60° | 65° | — | — |
| 1986 | 87° | 55° | 71° | — | — |
| 1985 | 70° | 54° | 62° | — | — |
| 1984 | 78° | 54° | 66° | — | — |
| 1983 | 90° | 53° | 71° | — | — |
| 1982 | 85° | 56° | 70° | — | — |
| 1981 | 79° | 50° | 64° | — | — |
| 1980 | 74° | 57° | 65° | — | — |
| 1979 | 69° | 54° | 61° | — | — |
| 1978 | 89° | 53° | 71° | — | — |
| 1977 | 68° | 47° | 57° | — | — |
| 1976 | 76° | 54° | 65° | — | — |
| 1975 | 71° | 57° | 64° | — | — |
| 1974 | 68° | 46° | 57° | — | — |
| 1973 | 75° | 54° | 64° | — | — |
| 1972 | 69° | 55° | 62° | — | — |
| 1971 | 85° | 51° | 68° | — | — |
55 years of data from EL TORO MCAS