Weather on August 13
San Mateo, CA
55 Years of Data
Avg High
73°F
Avg Low
56°F
Warmest
1991
75°F avg
Coldest
1980
55°F avg
About This Date
August 13th 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 13th was in 1991 (75°F average), while the coldest was 1980 (55°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 2% of August 13th dates historically. The last decade has been 1.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.8°F warmer on this date compared to 20-30 years ago.
Planning for August 13th 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 | 71° | 59° | 65° | — | — |
| 2024 | 69° | 54° | 61° | — | — |
| 2023 | 78° | 58° | 68° | — | — |
| 2022 | 74° | 59° | 66° | — | — |
| 2021 | 71° | 58° | 64° | — | — |
| 2020 | 86° | 56° | 71° | — | — |
| 2019 | 82° | 58° | 70° | — | — |
| 2018 | 67° | 55° | 61° | — | — |
| 2017 | 72° | 60° | 66° | — | — |
| 2016 | 70° | 53° | 61° | — | — |
| 2015 | 75° | 62° | 69° | — | — |
| 2014 | 77° | 61° | 69° | — | — |
| 2013 | 77° | 55° | 66° | — | — |
| 2012 | 70° | 53° | 61° | — | — |
| 2011 | 71° | 54° | 62° | — | — |
| 2010 | 68° | 54° | 61° | — | — |
| 2009 | 76° | 58° | 67° | — | — |
| 2008 | 80° | 56° | 68° | — | — |
| 2007 | 71° | 55° | 63° | — | — |
| 2006 | 73° | 58° | 65° | — | — |
| 2005 | 69° | 56° | 62° | — | — |
| 2004 | 76° | 59° | 67° | — | — |
| 2003 | 73° | 57° | 65° | — | — |
| 2002 | 70° | 56° | 63° | — | — |
| 2001 | 66° | 57° | 62° | — | — |
| 2000 | 72° | 53° | 62° | — | — |
| 1999 | 69° | 57° | 63° | — | — |
| 1998 | 72° | 56° | 64° | — | — |
| 1997 | 70° | 58° | 64° | — | — |
| 1996 | 71° | 55° | 63° | — | — |
| 1995 | 83° | 53° | 68° | — | — |
| 1994 | 83° | 55° | 69° | — | — |
| 1993 | 67° | 59° | 63° | — | — |
| 1992 | 71° | 58° | 64° | — | — |
| 1991warmest | 89° | 61° | 75° | 0.46" | — |
| 1990 | 73° | 57° | 65° | — | — |
| 1989 | 84° | 52° | 68° | — | — |
| 1988 | 68° | 58° | 63° | — | — |
| 1987 | 70° | 57° | 63° | — | — |
| 1986 | 70° | 53° | 61° | — | — |
| 1985 | 71° | 58° | 64° | — | — |
| 1984 | 72° | 56° | 64° | — | — |
| 1983 | 74° | 56° | 65° | — | — |
| 1982 | 71° | 57° | 64° | — | — |
| 1981 | 72° | 56° | 64° | — | — |
| 1980coldest | 59° | 52° | 55° | — | — |
| 1979 | 67° | 58° | 62° | — | — |
| 1978 | 76° | 55° | 65° | — | — |
| 1977 | 71° | 50° | 61° | — | — |
| 1976 | 71° | 57° | 64° | — | — |
| 1975 | 81° | 53° | 67° | — | — |
| 1974 | 75° | 53° | 64° | — | — |
| 1973 | 71° | 53° | 62° | — | — |
| 1972 | 71° | 52° | 61° | — | — |
| 1971 | 76° | 54° | 65° | — | — |
55 years of data from BURLINGAME