Weather on September 4
San Francisco, CA
55 Years of Data
Avg High
70°F
Avg Low
56°F
Warmest
2004
75°F avg
Coldest
1999
55°F avg
About This Date
September 4th in San Francisco, CA typically brings pleasant fall weather, with average highs around 70°F and lows near 56°F. Over 55 years of records, the warmest September 4th was in 2004 (75°F average), while the coldest was 1999 (55°F) — a 20°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 September 4th in San Francisco, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 65° | 57° | 61° | — | — |
| 2024 | 68° | 57° | 63° | — | — |
| 2023 | 67° | 56° | 61° | — | — |
| 2022 | 82° | 57° | 70° | — | — |
| 2021 | 66° | 53° | 60° | — | — |
| 2020 | 69° | 55° | 62° | — | — |
| 2019 | 69° | 57° | 63° | — | — |
| 2018 | 66° | 56° | 61° | — | — |
| 2017 | 79° | 64° | 71° | — | — |
| 2016 | 65° | 53° | 59° | — | — |
| 2015 | 68° | 55° | 62° | — | — |
| 2014 | 69° | 59° | 64° | — | — |
| 2013 | 71° | 59° | 65° | — | — |
| 2012 | 62° | 51° | 57° | — | — |
| 2011 | 61° | 54° | 57° | — | — |
| 2010 | 62° | 52° | 57° | — | — |
| 2009 | 64° | 53° | 59° | — | — |
| 2008 | 93° | 58° | 75° | — | — |
| 2007 | 67° | 60° | 63° | — | — |
| 2006 | 61° | 53° | 57° | — | — |
| 2005 | 62° | 55° | 59° | — | — |
| 2004warmest | 88° | 63° | 75° | — | — |
| 2003 | 69° | 58° | 63° | — | — |
| 2002 | 64° | 54° | 59° | — | — |
| 2001 | 70° | 55° | 62° | — | — |
| 2000 | 65° | 55° | 60° | — | — |
| 1999coldest | 61° | 50° | 55° | — | — |
| 1998 | 65° | 56° | 60° | — | — |
| 1997 | 84° | 59° | 72° | — | — |
| 1996 | 70° | 56° | 63° | — | — |
| 1995 | 72° | 57° | 64° | — | — |
| 1994 | 81° | 56° | 68° | — | — |
| 1993 | 66° | 55° | 61° | — | — |
| 1992 | 76° | 56° | 66° | — | — |
| 1991 | 71° | 56° | 63° | — | — |
| 1990 | 74° | 58° | 66° | — | — |
| 1989 | 70° | 53° | 61° | — | — |
| 1988 | 81° | 54° | 67° | — | — |
| 1987 | 65° | 57° | 61° | — | — |
| 1986 | 68° | 57° | 63° | — | — |
| 1985 | 70° | 59° | 64° | — | — |
| 1984 | 85° | 56° | 70° | — | — |
| 1983 | 84° | 60° | 72° | — | — |
| 1982 | 75° | 54° | 64° | — | — |
| 1981 | 60° | 52° | 56° | — | — |
| 1980 | 63° | 53° | 58° | — | — |
| 1979 | 71° | 59° | 65° | — | — |
| 1978 | 74° | 59° | 66° | — | — |
| 1977 | 77° | 58° | 67° | — | — |
| 1976 | 60° | 54° | 57° | — | — |
| 1975 | 71° | 56° | 63° | — | — |
| 1974 | 64° | 55° | 60° | — | — |
| 1973 | 60° | 51° | 56° | — | — |
| 1972 | 69° | 57° | 63° | — | — |
| 1971 | 85° | 60° | 72° | — | — |
55 years of data from SAN FRANCISCO DWTN