Weather on September 7
San Mateo, CA
55 Years of Data
Avg High
77°F
Avg Low
56°F
Warmest
2020
80°F avg
Coldest
1988
60°F avg
About This Date
September 7th in San Mateo, CA typically brings pleasant fall weather, with average highs around 77°F and lows near 56°F. Over 55 years of records, the warmest September 7th was in 2020 (80°F average), while the coldest was 1988 (60°F) — a 20°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 1.9°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.9°F warmer on this date compared to 20-30 years ago.
Planning for September 7th in San Mateo, CA? Great weather for outdoor activities.
Warming Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 76° | 62° | 69° | — | — |
| 2024 | 66° | 53° | 60° | — | — |
| 2023 | 71° | 58° | 64° | — | — |
| 2022 | 88° | 64° | 76° | — | — |
| 2021 | 75° | 58° | 66° | — | — |
| 2020warmest | 97° | 63° | 80° | — | — |
| 2019 | 72° | 61° | 66° | — | — |
| 2018 | 72° | 53° | 62° | — | — |
| 2017 | 72° | 62° | 67° | — | — |
| 2016 | 88° | 58° | 73° | — | — |
| 2015 | 89° | 58° | 73° | — | — |
| 2014 | 71° | 57° | 64° | — | — |
| 2013 | 88° | 58° | 73° | — | — |
| 2012 | 68° | 54° | 61° | — | — |
| 2011 | 86° | 52° | 69° | — | — |
| 2010 | 70° | 58° | 64° | — | — |
| 2009 | 72° | 57° | 64° | — | — |
| 2008 | 69° | 55° | 62° | — | — |
| 2007 | 73° | 60° | 67° | — | — |
| 2006 | 70° | 53° | 61° | — | — |
| 2005 | 66° | 53° | 60° | — | — |
| 2004 | 91° | 60° | 76° | — | — |
| 2003 | 68° | 58° | 63° | — | — |
| 2002 | 66° | 54° | 60° | — | — |
| 2001 | 75° | 54° | 64° | — | — |
| 2000 | 87° | 57° | 72° | — | — |
| 1999 | 73° | 52° | 62° | — | — |
| 1998 | 83° | 60° | 71° | — | — |
| 1997 | 72° | 60° | 66° | — | — |
| 1996 | 86° | 53° | 70° | — | — |
| 1995 | 87° | 54° | 70° | — | — |
| 1994 | 68° | 52° | 60° | — | — |
| 1993 | 82° | 55° | 69° | — | — |
| 1992 | 80° | 54° | 67° | — | — |
| 1991 | 70° | 59° | 64° | — | — |
| 1990 | 75° | 57° | 66° | — | — |
| 1989 | 72° | 52° | 62° | — | — |
| 1988coldest | 70° | 51° | 60° | — | — |
| 1987 | 73° | 57° | 65° | — | — |
| 1986 | 70° | 56° | 63° | — | — |
| 1985 | 71° | 60° | 66° | — | — |
| 1984 | 91° | 57° | 74° | — | — |
| 1983 | 72° | 59° | 65° | — | — |
| 1982 | 82° | 54° | 68° | — | — |
| 1981 | 68° | 54° | 61° | — | — |
| 1980 | 73° | 56° | 64° | — | — |
| 1979 | 73° | 59° | 66° | — | — |
| 1978 | 75° | 56° | 65° | — | — |
| 1977 | 82° | 52° | 67° | — | — |
| 1976 | 88° | 50° | 69° | — | — |
| 1975 | 83° | 50° | 66° | — | — |
| 1974 | 82° | 55° | 69° | — | — |
| 1973 | 73° | 52° | 62° | — | — |
| 1972 | 77° | 51° | 64° | — | — |
| 1971 | 86° | 55° | 71° | — | — |
55 years of data from BURLINGAME