Weather on July 23
San Mateo, CA
55 Years of Data
Avg High
73°F
Avg Low
55°F
Warmest
2006
75°F avg
Coldest
1973
60°F avg
About This Date
July 23rd in San Mateo, CA typically brings pleasant summer weather, with average highs around 73°F and lows near 55°F. Over 55 years of records, the warmest July 23rd was in 2006 (75°F average), while the coldest was 1973 (60°F) — a 15°F range across recorded history. Rain or other precipitation has occurred on about 2% of July 23rd 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 July 23rd in San Mateo, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 71° | 58° | 64° | — | — |
| 2024 | 78° | 55° | 67° | — | — |
| 2023 | 70° | 60° | 65° | — | — |
| 2022 | 68° | 54° | 61° | — | — |
| 2021 | 75° | 53° | 64° | — | — |
| 2020 | 73° | 56° | 64° | — | — |
| 2019 | 71° | 58° | 64° | — | — |
| 2018 | 70° | 55° | 62° | — | — |
| 2017 | 70° | 56° | 63° | — | — |
| 2016 | 72° | 56° | 64° | — | — |
| 2015 | 68° | 60° | 64° | — | — |
| 2014 | 76° | 64° | 70° | — | — |
| 2013 | 69° | 56° | 62° | — | — |
| 2012 | 74° | 56° | 65° | — | — |
| 2011 | 72° | 55° | 63° | — | — |
| 2010 | 68° | 56° | 62° | — | — |
| 2009 | 66° | 54° | 60° | — | — |
| 2008 | 68° | 54° | 61° | — | — |
| 2007 | 72° | 59° | 65° | — | — |
| 2006warmest | 88° | 62° | 75° | — | — |
| 2005 | 89° | 57° | 73° | — | — |
| 2004 | 74° | 58° | 66° | — | — |
| 2003 | 71° | 54° | 62° | — | — |
| 2002 | 73° | 53° | 63° | — | — |
| 2001 | 69° | 54° | 61° | — | — |
| 2000 | 71° | 53° | 62° | — | — |
| 1999 | 66° | 54° | 60° | — | — |
| 1998 | 74° | 58° | 66° | — | — |
| 1997 | 72° | 57° | 64° | — | — |
| 1996 | 67° | 54° | 60° | — | — |
| 1995 | 68° | 58° | 63° | — | — |
| 1994 | 71° | 59° | 65° | — | — |
| 1993 | 73° | 57° | 65° | — | — |
| 1992 | 75° | 54° | 64° | — | — |
| 1991 | 69° | 56° | 62° | — | — |
| 1990 | 64° | 56° | 60° | — | — |
| 1989 | 72° | 53° | 62° | — | — |
| 1988 | 81° | 58° | 69° | — | — |
| 1987 | 72° | 57° | 64° | — | — |
| 1986 | 76° | 57° | 66° | 0.03" | — |
| 1985 | 72° | 54° | 63° | — | — |
| 1984 | 72° | 56° | 64° | — | — |
| 1983 | 72° | 58° | 65° | — | — |
| 1982 | 73° | 51° | 62° | — | — |
| 1981 | 70° | 50° | 60° | — | — |
| 1980 | 70° | 54° | 62° | — | — |
| 1979 | 77° | 55° | 66° | — | — |
| 1978 | 81° | 54° | 67° | — | — |
| 1977 | 73° | 54° | 63° | — | — |
| 1976 | 82° | 47° | 64° | — | — |
| 1975 | 74° | 53° | 63° | — | — |
| 1974 | 82° | 54° | 68° | — | — |
| 1973coldest | 68° | 52° | 60° | — | — |
| 1972 | 70° | 52° | 61° | — | — |
| 1971 | 74° | 54° | 64° | — | — |
55 years of data from BURLINGAME