Weather on May 21
Santa Clara, CA
55 Years of Data
Avg High
75°F
Avg Low
52°F
Warmest
2000
79°F avg
Coldest
2010
56°F avg
About This Date
May 21st in Santa Clara, 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 2000 (79°F average), while the coldest was 2010 (56°F) — a 23°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 0.99" of rain. The last decade has been 1.0°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.0°F cooler on this date compared to 20-30 years ago.
Planning for May 21st in Santa Clara, 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 | 80° | 54° | 67° | — | — |
| 2006 | 68° | 54° | 61° | 0.99" | — |
| 2005 | 78° | 51° | 65° | — | — |
| 2004 | 65° | 55° | 60° | — | — |
| 2003 | 83° | 56° | 69° | — | — |
| 2002 | 65° | 50° | 57° | 0.13" | — |
| 2001 | 88° | 58° | 73° | — | — |
| 2000warmest | 97° | 61° | 79° | — | — |
| 1999 | 81° | 48° | 64° | — | — |
| 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° | — | — |
| 1988 | 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 | 75° | 50° | 63° | — | — |
| 1975 | 86° | 45° | 65° | — | — |
| 1974 | 74° | 41° | 57° | — | — |
| 1973 | 75° | 50° | 63° | — | — |
| 1972 | 75° | 54° | 64° | — | — |
| 1971 | 72° | 45° | 58° | — | — |
55 years of data from SANTA CLARA UNIV