Weather on July 21
San Leandro, CA
55 Years of Data
Avg High
74°F
Avg Low
54°F
Warmest
2006
78°F avg
Coldest
2010
54°F avg
About This Date
July 21st in San Leandro, CA typically brings pleasant summer weather, with average highs around 74°F and lows near 54°F. Over 52 years of records, the warmest July 21st was in 2006 (78°F average), while the coldest was 2010 (54°F) — a 24°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 1.6°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.6°F cooler on this date compared to 20-30 years ago.
Planning for July 21st in San Leandro, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 57° | 53° | 55° | — | — |
| 2024 | 70° | 52° | 61° | — | — |
| 2023 | 88° | 63° | 75° | — | — |
| 2022 | 75° | 49° | 62° | — | — |
| 2021 | 73° | 51° | 62° | — | — |
| 2020 | 69° | 52° | 60° | — | — |
| 2019 | 81° | 53° | 67° | — | — |
| 2018 | 77° | 56° | 66° | — | — |
| 2017 | 75° | 51° | 63° | — | — |
| 2016 | 70° | 50° | 60° | — | — |
| 2015 | 67° | 56° | 61° | — | — |
| 2014 | 67° | 57° | 62° | — | — |
| 2013 | 75° | 50° | 63° | — | — |
| 2012 | 88° | 57° | 72° | — | — |
| 2011 | 78° | 52° | 65° | — | — |
| 2010coldest | 59° | 49° | 54° | — | — |
| 2009 | 65° | 56° | 60° | — | — |
| 2008 | 68° | 55° | 62° | — | — |
| 2007 | 76° | 55° | 65° | — | — |
| 2006warmest | 90° | 66° | 78° | — | — |
| 2005 | 70° | 55° | 62° | — | — |
| 2004 | 86° | 55° | 71° | — | — |
| 2003 | 86° | 63° | 74° | — | — |
| 2002 | 70° | 54° | 62° | — | — |
| 2001 | 64° | 51° | 58° | — | — |
| 2000 | 63° | 50° | 56° | — | — |
| 1999 | 68° | 52° | 60° | — | — |
| 1998 | 68° | 52° | 60° | — | — |
| 1997 | 80° | 53° | 67° | — | — |
| 1996 | 90° | 65° | 77° | — | — |
| 1995 | 71° | 58° | 64° | — | — |
| 1994 | 65° | 53° | 59° | — | — |
| 1993 | 70° | 52° | 61° | — | — |
| 1989 | 78° | 51° | 65° | — | — |
| 1988 | 73° | 56° | 64° | — | — |
| 1987 | 70° | 52° | 61° | — | — |
| 1986 | 88° | 53° | 70° | — | — |
| 1985 | 66° | 55° | 61° | — | — |
| 1984 | 73° | 65° | 69° | — | — |
| 1983 | 79° | 55° | 67° | — | — |
| 1982 | 71° | 53° | 62° | — | — |
| 1981 | 86° | 51° | 69° | — | — |
| 1980 | 74° | 54° | 64° | — | — |
| 1979 | 70° | 54° | 62° | — | — |
| 1978 | 72° | 51° | 61° | — | — |
| 1977 | 78° | 54° | 66° | — | — |
| 1976 | 73° | 45° | 59° | — | — |
| 1975 | 67° | 53° | 60° | — | — |
| 1974 | 81° | 52° | 66° | — | — |
| 1973 | 67° | 51° | 59° | — | — |
| 1972 | 64° | 55° | 60° | — | — |
| 1971 | 76° | 53° | 64° | — | — |
52 years of data from UPPER SAN LEANDRO FILTERS