Weather on August 21
Fremont, CA
55 Years of Data
Avg High
77°F
Avg Low
58°F
Warmest
2025
73°F avg
Coldest
1991
62°F avg
About This Date
August 21st in Fremont, CA typically brings pleasant summer weather, with average highs around 77°F and lows near 58°F. Over 55 years of records, the warmest August 21st was in 2025 (73°F average), while the coldest was 1991 (62°F) — a 11°F range across recorded history. This date has historically been dry, with little recorded precipitation. 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 August 21st in Fremont, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025warmest | 90° | 56° | 73° | — | — |
| 2024 | 75° | 55° | 65° | — | — |
| 2023 | 87° | 58° | 72° | — | — |
| 2022 | 82° | 54° | 68° | — | — |
| 2021 | 73° | 58° | 65° | — | — |
| 2020 | 83° | 58° | 70° | — | — |
| 2019 | 82° | — | — | — | — |
| 2018 | 70° | 57° | 63° | — | — |
| 2017 | 76° | 62° | 69° | — | — |
| 2016 | 73° | 57° | 65° | — | — |
| 2015 | 74° | 61° | 67° | — | — |
| 2014 | 79° | 59° | 69° | — | — |
| 2013 | 75° | 58° | 66° | — | — |
| 2012 | 73° | 55° | 64° | — | — |
| 2011 | 70° | 59° | 64° | — | — |
| 2010 | 72° | 57° | 64° | — | — |
| 2009 | 86° | 57° | 72° | — | — |
| 2008 | 76° | 63° | 69° | — | — |
| 2007 | 84° | 59° | 72° | — | — |
| 2006 | 72° | 56° | 64° | — | — |
| 2005 | 72° | 56° | 64° | — | — |
| 2004 | 75° | 60° | 68° | — | — |
| 2003 | 76° | 62° | 69° | — | — |
| 2002 | 76° | 54° | 65° | — | — |
| 2001 | 71° | 55° | 63° | — | — |
| 2000 | 84° | 54° | 69° | — | — |
| 1999 | 75° | 58° | 66° | — | — |
| 1998 | 81° | 53° | 67° | — | — |
| 1997 | 83° | 59° | 71° | — | — |
| 1996 | 82° | 55° | 69° | — | — |
| 1995 | 83° | 60° | 71° | — | — |
| 1994 | 79° | 57° | 68° | — | — |
| 1993 | 74° | 54° | 64° | — | — |
| 1992 | 73° | 54° | 63° | — | — |
| 1991coldest | 70° | 55° | 62° | — | — |
| 1990 | 75° | 59° | 67° | — | — |
| 1989 | 76° | 58° | 67° | — | — |
| 1988 | 76° | 57° | 66° | — | — |
| 1987 | 72° | 57° | 64° | — | — |
| 1986 | 73° | 57° | 65° | — | — |
| 1985 | 72° | 59° | 65° | — | — |
| 1984 | 77° | 59° | 68° | — | — |
| 1983 | 77° | 64° | 71° | — | — |
| 1982 | 75° | 59° | 67° | — | — |
| 1981 | 73° | 60° | 67° | — | — |
| 1980 | 76° | 58° | 67° | — | — |
| 1979 | 74° | 61° | 67° | — | — |
| 1978 | 75° | 58° | 66° | — | — |
| 1977 | 69° | 57° | 63° | — | — |
| 1976 | 72° | 66° | 69° | — | — |
| 1975 | 80° | 55° | 68° | — | — |
| 1974 | 87° | 56° | 71° | — | — |
| 1973 | 78° | 53° | 66° | — | — |
| 1972 | 84° | 60° | 72° | — | — |
| 1971 | 74° | 60° | 67° | — | — |
55 years of data from FREMONT