Weather on May 21
San Diego, CA
55 Years of Data
Avg High
69°F
Avg Low
60°F
Warmest
2005
70°F avg
Coldest
1971
59°F avg
About This Date
May 21st in San Diego, CA typically brings mild spring weather, with average highs around 69°F and lows near 60°F. Over 55 years of records, the warmest May 21st was in 2005 (70°F average), while the coldest was 1971 (59°F) — a 11°F range across recorded history. Rain or other precipitation has occurred on about 2% of May 21st 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 21st in San Diego, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 75° | 62° | 69° | — | — |
| 2024 | 68° | 59° | 64° | — | — |
| 2023 | 69° | 61° | 65° | — | — |
| 2022 | 66° | 59° | 63° | — | — |
| 2021 | 66° | 59° | 63° | — | — |
| 2020 | 75° | 60° | 68° | — | — |
| 2019 | 67° | 60° | 63° | — | — |
| 2018 | 64° | 59° | 62° | — | — |
| 2017 | 78° | 63° | 70° | — | — |
| 2016 | 67° | 60° | 63° | — | — |
| 2015 | 67° | 61° | 64° | 0.03" | — |
| 2014 | 69° | 62° | 66° | — | — |
| 2013 | 71° | 62° | 67° | — | — |
| 2012 | 70° | 60° | 65° | — | — |
| 2011 | 69° | 61° | 65° | — | — |
| 2010 | 66° | 59° | 63° | — | — |
| 2009 | 66° | 60° | 63° | — | — |
| 2008 | 67° | 60° | 63° | — | — |
| 2007 | 62° | 58° | 60° | — | — |
| 2006 | 68° | 62° | 65° | — | — |
| 2005warmest | 78° | 63° | 70° | — | — |
| 2004 | 67° | 63° | 65° | — | — |
| 2003 | 76° | 61° | 68° | — | — |
| 2002 | 65° | 58° | 61° | — | — |
| 2001 | 67° | 61° | 64° | — | — |
| 2000 | 68° | 58° | 63° | — | — |
| 1999 | 61° | 57° | 59° | — | — |
| 1998 | 67° | 59° | 63° | — | — |
| 1997 | 73° | 65° | 69° | — | — |
| 1996 | 74° | 63° | 68° | — | — |
| 1995 | 67° | 58° | 62° | — | — |
| 1994 | 69° | 56° | 62° | — | — |
| 1993 | 70° | 61° | 65° | — | — |
| 1992 | 71° | 62° | 67° | — | — |
| 1991 | 62° | 56° | 59° | — | — |
| 1990 | 71° | 61° | 66° | — | — |
| 1989 | 73° | 58° | 65° | — | — |
| 1988 | 74° | 61° | 67° | — | — |
| 1987 | 69° | 59° | 64° | — | — |
| 1986 | 71° | 61° | 66° | — | — |
| 1985 | 71° | 63° | 67° | — | — |
| 1984 | 70° | 63° | 66° | — | — |
| 1983 | 73° | 63° | 68° | — | — |
| 1982 | 70° | 63° | 66° | — | — |
| 1981 | 71° | 58° | 64° | — | — |
| 1980 | 70° | 63° | 66° | — | — |
| 1979 | 71° | 63° | 67° | — | — |
| 1978 | 72° | 63° | 67° | — | — |
| 1977 | 68° | 59° | 64° | — | — |
| 1976 | 70° | 61° | 65° | — | — |
| 1975 | 66° | 54° | 60° | — | — |
| 1974 | 73° | 56° | 64° | — | — |
| 1973 | 68° | 60° | 64° | — | — |
| 1972 | 69° | 57° | 63° | — | — |
| 1971coldest | 63° | 56° | 59° | — | — |
55 years of data from SAN DIEGO INTL AP