Weather on May 18
San Diego, CA
55 Years of Data
Avg High
70°F
Avg Low
60°F
Warmest
2008
76°F avg
Coldest
1999
59°F avg
About This Date
May 18th in San Diego, CA typically brings pleasant spring weather, with average highs around 70°F and lows near 60°F. Over 55 years of records, the warmest May 18th was in 2008 (76°F average), while the coldest was 1999 (59°F) — a 17°F range across recorded history. Rain or other precipitation has occurred on about 4% of May 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 May 18th in San Diego, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 69° | 61° | 65° | — | — |
| 2024 | 70° | 61° | 65° | — | — |
| 2023 | 67° | 58° | 62° | — | — |
| 2022 | 65° | 59° | 62° | — | — |
| 2021 | 70° | 62° | 66° | — | — |
| 2020 | 75° | 66° | 71° | — | — |
| 2019 | 69° | 57° | 63° | — | — |
| 2018 | 65° | 60° | 62° | — | — |
| 2017 | 70° | 61° | 65° | — | — |
| 2016 | 72° | 62° | 67° | — | — |
| 2015 | 68° | 61° | 64° | — | — |
| 2014 | 70° | 63° | 66° | — | — |
| 2013 | 70° | 62° | 66° | — | — |
| 2012 | 67° | 60° | 63° | — | — |
| 2011 | 67° | 58° | 62° | 0.48" | — |
| 2010 | 69° | 58° | 63° | — | — |
| 2009 | 69° | 60° | 65° | — | — |
| 2008warmest | 86° | 66° | 76° | — | — |
| 2007 | 65° | 58° | 61° | — | — |
| 2006 | 68° | 61° | 64° | — | — |
| 2005 | 71° | 62° | 67° | — | — |
| 2004 | 72° | 63° | 67° | — | — |
| 2003 | 68° | 59° | 64° | — | — |
| 2002 | 62° | 59° | 61° | — | — |
| 2001 | 67° | 61° | 64° | — | — |
| 2000 | 70° | 60° | 65° | — | — |
| 1999coldest | 63° | 56° | 59° | — | — |
| 1998 | 70° | 56° | 63° | — | — |
| 1997 | 69° | 65° | 67° | — | — |
| 1996 | 73° | 64° | 69° | — | — |
| 1995 | 70° | 59° | 64° | — | — |
| 1994 | 66° | 55° | 61° | — | — |
| 1993 | 72° | 60° | 66° | — | — |
| 1992 | 72° | 62° | 67° | — | — |
| 1991 | 65° | 55° | 60° | — | — |
| 1990 | 66° | 59° | 63° | — | — |
| 1989 | 69° | 61° | 65° | — | — |
| 1988 | 69° | 59° | 64° | — | — |
| 1987 | 68° | 61° | 64° | — | — |
| 1986 | 75° | 62° | 69° | — | — |
| 1985 | 68° | 60° | 64° | — | — |
| 1984 | 75° | 60° | 68° | — | — |
| 1983 | 86° | 63° | 74° | — | — |
| 1982 | 67° | 61° | 64° | — | — |
| 1981 | 75° | 62° | 69° | — | — |
| 1980 | 71° | 63° | 67° | — | — |
| 1979 | 70° | 59° | 64° | — | — |
| 1978 | 85° | 64° | 74° | — | — |
| 1977 | 69° | 54° | 61° | — | — |
| 1976 | 73° | 62° | 68° | — | — |
| 1975 | 70° | 61° | 65° | — | — |
| 1974 | 66° | 56° | 61° | — | — |
| 1973 | 67° | 59° | 63° | — | — |
| 1972 | 64° | 57° | 61° | 0.03" | — |
| 1971 | 82° | 57° | 70° | — | — |
55 years of data from SAN DIEGO INTL AP