Weather on April 21
Santa Clara, CA
55 Years of Data
Avg High
72°F
Avg Low
49°F
Warmest
2009
76°F avg
Coldest
2008
49°F avg
About This Date
April 21st in Santa Clara, CA typically brings pleasant spring weather, with average highs around 72°F and lows near 49°F. Over 55 years of records, the warmest April 21st was in 2009 (76°F average), while the coldest was 2008 (49°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 16% of April 21st dates historically, with the wettest April 21st recording 1.65" of rain. The last decade has been 2.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.5°F warmer on this date compared to 20-30 years ago.
Planning for April 21st in Santa Clara, CA? Great weather for outdoor activities.
Warming Trend
1.0°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 78° | 47° | 62° | — | — |
| 2024 | 81° | 50° | 65° | — | — |
| 2023 | 77° | 50° | 64° | — | — |
| 2022 | 66° | 53° | 60° | 0.23" | — |
| 2021 | 69° | 48° | 59° | — | — |
| 2020 | 70° | 52° | 61° | — | — |
| 2019 | 71° | 47° | 59° | — | — |
| 2018 | 81° | 48° | 64° | — | — |
| 2017 | 77° | 50° | 64° | — | — |
| 2016 | 77° | 57° | 67° | — | — |
| 2015 | 69° | 55° | 62° | — | — |
| 2014 | 74° | 50° | 62° | — | — |
| 2013 | 84° | 49° | 66° | — | — |
| 2012 | 91° | 57° | 74° | — | — |
| 2011 | 64° | 50° | 57° | 0.05" | — |
| 2010 | 54° | 47° | 50° | 1.5" | — |
| 2009warmest | 92° | 60° | 76° | — | — |
| 2008coldest | 59° | 40° | 49° | — | — |
| 2007 | — | 50° | — | 0.41" | — |
| 2006 | 67° | 52° | 59° | — | — |
| 2005 | 74° | 49° | 61° | — | — |
| 2004 | 65° | 51° | 58° | — | — |
| 2003 | 58° | 48° | 53° | 0.15" | — |
| 2002 | 71° | 49° | 60° | — | — |
| 2001 | 64° | 41° | 53° | — | — |
| 2000 | 71° | 51° | 61° | — | — |
| 1999 | 65° | 49° | 57° | — | — |
| 1998 | 89° | 51° | 70° | — | — |
| 1997 | 78° | 61° | 69° | — | — |
| 1996 | 71° | 44° | 58° | — | — |
| 1995 | 70° | 41° | 55° | — | — |
| 1994 | 69° | 49° | 59° | — | — |
| 1993 | 76° | 52° | 64° | — | — |
| 1992 | 67° | 54° | 60° | — | — |
| 1991 | 70° | 53° | 61° | 0.03" | — |
| 1990 | 67° | 54° | 60° | — | — |
| 1989 | 69° | 55° | 62° | 0.23" | — |
| 1988 | 66° | 48° | 57° | — | — |
| 1987 | 91° | 52° | 71° | — | — |
| 1986 | 85° | 54° | 69° | — | — |
| 1985 | 62° | 50° | 56° | — | — |
| 1984 | 74° | 44° | 59° | — | — |
| 1983 | 61° | 53° | 57° | 0.56" | — |
| 1982 | 81° | 53° | 67° | — | — |
| 1981 | 70° | 48° | 59° | — | — |
| 1980 | 55° | 45° | 50° | 1.65" | — |
| 1979 | 71° | 44° | 58° | — | — |
| 1978 | 64° | 44° | 54° | — | — |
| 1977 | 73° | 44° | 59° | — | — |
| 1976 | 72° | 45° | 58° | — | — |
| 1975 | 70° | 45° | 57° | — | — |
| 1974 | 74° | 42° | 58° | — | — |
| 1973 | 76° | 43° | 59° | — | — |
| 1972 | 72° | 42° | 57° | — | — |
| 1971 | 61° | 40° | 50° | — | — |
55 years of data from SANTA CLARA UNIV