Weather on May 21
San Jose, CA
55 Years of Data
Avg High
75°F
Avg Low
52°F
Warmest
1988
77°F avg
Coldest
2010
56°F avg
About This Date
May 21st in San Jose, CA typically brings pleasant spring weather, with average highs around 75°F and lows near 52°F. Over 55 years of records, the warmest May 21st was in 1988 (77°F average), while the coldest was 2010 (56°F) — a 21°F range across recorded history. Rain or other precipitation has occurred on about 7% of May 21st dates historically, with the wettest May 21st recording 1.07" of rain. 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 Jose, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 81° | 51° | 66° | — | — |
| 2024 | 83° | 52° | 67° | — | — |
| 2023 | 79° | 57° | 68° | — | — |
| 2022 | 84° | 52° | 68° | — | — |
| 2021 | 70° | 48° | 59° | — | — |
| 2020 | 79° | 51° | 65° | — | — |
| 2019 | 62° | 50° | 56° | 0.36" | — |
| 2018 | 74° | 55° | 64° | — | — |
| 2017 | 89° | 59° | 74° | — | — |
| 2016 | 63° | 52° | 57° | 0.36" | — |
| 2015 | 68° | 55° | 62° | — | — |
| 2014 | 77° | 55° | 66° | — | — |
| 2013 | 69° | 51° | 60° | — | — |
| 2012 | 75° | 54° | 64° | — | — |
| 2011 | 71° | 52° | 61° | — | — |
| 2010coldest | 65° | 47° | 56° | — | — |
| 2009 | 78° | 48° | 63° | — | — |
| 2008 | 70° | 50° | 60° | — | — |
| 2007 | 79° | 54° | 66° | — | — |
| 2006 | 68° | 54° | 61° | 1.07" | — |
| 2005 | 78° | 51° | 65° | — | — |
| 2004 | 65° | 55° | 60° | — | — |
| 2003 | 83° | 56° | 69° | — | — |
| 2002 | 66° | 51° | 59° | 0.25" | — |
| 2001 | 88° | 58° | 73° | — | — |
| 2000 | 97° | — | — | — | — |
| 1999 | 77° | 47° | 62° | — | — |
| 1998 | 68° | 49° | 58° | — | — |
| 1997 | 81° | 54° | 67° | — | — |
| 1996 | 73° | 52° | 62° | — | — |
| 1995 | 67° | 55° | 61° | — | — |
| 1994 | 70° | 48° | 59° | — | — |
| 1993 | 74° | 56° | 65° | — | — |
| 1992 | 84° | 54° | 69° | — | — |
| 1991 | 78° | 52° | 65° | — | — |
| 1990 | 78° | 55° | 67° | — | — |
| 1989 | 74° | 50° | 62° | — | — |
| 1988warmest | 94° | 60° | 77° | — | — |
| 1987 | 67° | 53° | 60° | — | — |
| 1986 | 69° | 51° | 60° | — | — |
| 1985 | 82° | 50° | 66° | — | — |
| 1984 | 75° | 48° | 62° | — | — |
| 1983 | 89° | 57° | 73° | — | — |
| 1982 | 70° | 51° | 60° | — | — |
| 1981 | 67° | 55° | 61° | — | — |
| 1980 | 75° | 53° | 64° | — | — |
| 1979 | 71° | 58° | 64° | — | — |
| 1978 | 74° | 55° | 64° | — | — |
| 1977 | 69° | 49° | 59° | — | — |
| 1976 | 74° | 50° | 62° | — | — |
| 1975 | 79° | 47° | 63° | — | — |
| 1974 | 72° | 43° | 57° | — | — |
| 1973 | 75° | 50° | 63° | — | — |
| 1972 | 73° | 54° | 63° | — | — |
| 1971 | 70° | 46° | 58° | — | — |
55 years of data from SAN JOSE