Weather on August 12
San Mateo, CA
55 Years of Data
Avg High
73°F
Avg Low
56°F
Warmest
2019
73°F avg
Coldest
1979
59°F avg
About This Date
August 12th in San Mateo, CA typically brings pleasant summer weather, with average highs around 73°F and lows near 56°F. Over 55 years of records, the warmest August 12th was in 2019 (73°F average), while the coldest was 1979 (59°F) — a 14°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 12th in San Mateo, CA? Great weather for outdoor activities.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 68° | 57° | 63° | — | — |
| 2024 | 66° | 53° | 60° | — | — |
| 2023 | 75° | 59° | 67° | — | — |
| 2022 | 72° | 60° | 66° | — | — |
| 2021 | 71° | 59° | 65° | — | — |
| 2020 | 71° | 56° | 63° | — | — |
| 2019warmest | 86° | 59° | 73° | — | — |
| 2018 | 72° | 58° | 65° | — | — |
| 2017 | 73° | 60° | 67° | — | — |
| 2016 | 69° | 54° | 61° | — | — |
| 2015 | 77° | 58° | 67° | — | — |
| 2014 | 77° | 62° | 70° | — | — |
| 2013 | 74° | 56° | 65° | — | — |
| 2012 | 65° | 53° | 59° | — | — |
| 2011 | 68° | 54° | 61° | — | — |
| 2010 | 69° | 54° | 61° | — | — |
| 2009 | 84° | 57° | 71° | — | — |
| 2008 | 72° | 55° | 63° | — | — |
| 2007 | 69° | 55° | 62° | — | — |
| 2006 | 74° | 55° | 64° | — | — |
| 2005 | 74° | 57° | 65° | — | — |
| 2004 | 74° | 57° | 65° | — | — |
| 2003 | 72° | 57° | 64° | — | — |
| 2002 | 70° | 54° | 62° | — | — |
| 2001 | 68° | 57° | 63° | — | — |
| 2000 | 70° | 55° | 62° | — | — |
| 1999 | 69° | 58° | 63° | — | — |
| 1998 | 83° | 56° | 69° | — | — |
| 1997 | 71° | 57° | 64° | — | — |
| 1996 | 80° | 58° | 69° | — | — |
| 1995 | 83° | 50° | 66° | — | — |
| 1994 | 78° | 54° | 66° | — | — |
| 1993 | 74° | 59° | 66° | — | — |
| 1992 | 73° | 61° | 67° | — | — |
| 1991 | 72° | 56° | 64° | — | — |
| 1990 | 68° | 55° | 62° | — | — |
| 1989 | 71° | 56° | 63° | — | — |
| 1988 | 65° | 57° | 61° | — | — |
| 1987 | 74° | 58° | 66° | — | — |
| 1986 | 71° | 52° | 61° | — | — |
| 1985 | 73° | 56° | 64° | — | — |
| 1984 | 76° | 53° | 64° | — | — |
| 1983 | 76° | 55° | 65° | — | — |
| 1982 | 78° | 52° | 65° | — | — |
| 1981 | 72° | 56° | 64° | — | — |
| 1980 | 66° | 51° | 59° | — | — |
| 1979coldest | 65° | 53° | 59° | — | — |
| 1978 | 71° | 55° | 63° | — | — |
| 1977 | 73° | 55° | 64° | — | — |
| 1976 | 73° | 51° | 62° | — | — |
| 1975 | 81° | — | — | — | — |
| 1974 | 74° | 55° | 64° | — | — |
| 1973 | 71° | 52° | 61° | — | — |
| 1972 | 71° | 52° | 61° | — | — |
| 1971 | 77° | 53° | 65° | — | — |
55 years of data from BURLINGAME