Weather on August 22
San Mateo, CA
55 Years of Data
Avg High
74°F
Avg Low
57°F
Warmest
1999
73°F avg
Coldest
1986
58°F avg
About This Date
August 22nd in San Mateo, CA typically brings pleasant summer weather, with average highs around 74°F and lows near 57°F. Over 55 years of records, the warmest August 22nd was in 1999 (73°F average), while the coldest was 1986 (58°F) — a 15°F range across recorded history. Rain or other precipitation has occurred on about 2% of August 22nd dates historically. 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 22nd in San Mateo, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 71° | 56° | 63° | — | — |
| 2024 | 68° | 57° | 63° | — | — |
| 2023 | 78° | 64° | 71° | — | — |
| 2022 | 77° | 57° | 67° | — | — |
| 2021 | 73° | 58° | 65° | — | — |
| 2020 | 79° | 56° | 67° | — | — |
| 2019 | 79° | 61° | 70° | — | — |
| 2018 | 72° | 61° | 66° | — | — |
| 2017 | 73° | 60° | 67° | — | — |
| 2016 | 69° | 58° | 63° | — | — |
| 2015 | 73° | 59° | 66° | — | — |
| 2014 | 77° | 59° | 68° | — | — |
| 2013 | 70° | 58° | 64° | — | — |
| 2012 | 68° | 54° | 61° | — | — |
| 2011 | 67° | 56° | 61° | — | — |
| 2010 | 74° | 56° | 65° | — | — |
| 2009 | 68° | 58° | 63° | — | — |
| 2008 | 70° | 58° | 64° | — | — |
| 2007 | 75° | 57° | 66° | — | — |
| 2006 | 70° | 54° | 62° | — | — |
| 2005 | 68° | 54° | 61° | — | — |
| 2004 | 76° | 62° | 69° | — | — |
| 2003 | 76° | 63° | 69° | — | — |
| 2002 | 67° | 55° | 61° | — | — |
| 2001 | 71° | 59° | 65° | — | — |
| 2000 | 74° | 55° | 64° | — | — |
| 1999warmest | 90° | 57° | 73° | — | — |
| 1998 | 74° | 55° | 64° | — | — |
| 1997 | 77° | 61° | 69° | — | — |
| 1996 | 74° | 52° | 63° | — | — |
| 1995 | 72° | 54° | 63° | — | — |
| 1994 | 78° | 56° | 67° | — | — |
| 1993 | 83° | 58° | 70° | — | — |
| 1992 | 75° | 56° | 65° | — | — |
| 1991 | 67° | 57° | 62° | — | — |
| 1990 | 81° | 57° | 69° | — | — |
| 1989 | 70° | 57° | 63° | — | — |
| 1988 | 75° | 57° | 66° | — | — |
| 1987 | 74° | 57° | 65° | — | — |
| 1986coldest | 64° | 51° | 58° | — | — |
| 1985 | 71° | 53° | 62° | — | — |
| 1984 | 70° | 54° | 62° | — | — |
| 1983 | 75° | 59° | 67° | — | — |
| 1982 | 69° | 53° | 61° | — | — |
| 1981 | 69° | 53° | 61° | — | — |
| 1980 | 68° | 52° | 60° | — | — |
| 1979 | 74° | 60° | 67° | — | — |
| 1978 | 73° | 53° | 63° | — | — |
| 1977 | 77° | 56° | 66° | — | — |
| 1976 | 79° | 59° | 69° | 0.05" | — |
| 1975 | 76° | 52° | 64° | — | — |
| 1974 | 86° | 54° | 70° | — | — |
| 1973 | 72° | 50° | 61° | — | — |
| 1972 | 78° | 56° | 67° | — | — |
| 1971 | 76° | 62° | 69° | — | — |
55 years of data from BURLINGAME