Weather on September 15
Santa Clara, CA
55 Years of Data
Avg High
78°F
Avg Low
57°F
Warmest
1971
85°F avg
Coldest
2006
60°F avg
About This Date
September 15th in Santa Clara, CA typically brings pleasant fall weather, with average highs around 78°F and lows near 57°F. Over 55 years of records, the warmest September 15th was in 1971 (85°F average), while the coldest was 2006 (60°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 2% of September 15th 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 September 15th in Santa Clara, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 90° | 60° | 75° | — | — |
| 2024 | 75° | 57° | 66° | — | — |
| 2023 | 80° | 62° | 71° | — | — |
| 2022 | 74° | 58° | 66° | — | — |
| 2021 | 80° | 56° | 68° | — | — |
| 2020 | 79° | 60° | 69° | — | — |
| 2019 | 78° | 58° | 68° | — | — |
| 2018 | 73° | 54° | 63° | — | — |
| 2017 | 77° | 55° | 66° | — | — |
| 2016 | 76° | 56° | 66° | — | — |
| 2015 | 73° | 57° | 65° | — | — |
| 2014 | 77° | 60° | 69° | — | — |
| 2013 | 78° | 58° | 68° | — | — |
| 2012 | 76° | 56° | 66° | — | — |
| 2011 | 77° | 56° | 66° | — | — |
| 2010 | 73° | 56° | 64° | — | — |
| 2009 | 82° | 56° | 69° | — | — |
| 2008 | 76° | 57° | 66° | — | — |
| 2007 | 74° | 56° | 65° | — | — |
| 2006coldest | 69° | 52° | 60° | — | — |
| 2005 | 72° | 55° | 63° | — | — |
| 2004 | 91° | 60° | 76° | — | — |
| 2003 | 79° | 58° | 68° | — | — |
| 2002 | 76° | 58° | 67° | — | — |
| 2001 | 72° | 57° | 64° | — | — |
| 2000 | 77° | 58° | 67° | — | — |
| 1999 | 75° | 55° | 65° | — | — |
| 1998 | 81° | 61° | 71° | — | — |
| 1997 | 77° | 60° | 69° | — | — |
| 1996 | 76° | 62° | 69° | — | — |
| 1995 | 74° | 60° | 67° | — | — |
| 1994 | 91° | 56° | 73° | — | — |
| 1993 | 75° | 60° | 68° | — | — |
| 1992 | 79° | 51° | 65° | — | — |
| 1991 | 79° | 54° | 66° | — | — |
| 1990 | 77° | 54° | 65° | — | — |
| 1989 | 78° | 60° | 69° | — | — |
| 1988 | 70° | 57° | 63° | — | — |
| 1987 | 82° | 55° | 69° | — | — |
| 1986 | 76° | 53° | 64° | 0.03" | — |
| 1985 | 81° | 51° | 66° | — | — |
| 1984 | 80° | 58° | 69° | — | — |
| 1983 | 91° | 64° | 78° | — | — |
| 1982 | 73° | 60° | 67° | — | — |
| 1981 | 73° | 57° | 65° | — | — |
| 1980 | 78° | 55° | 67° | — | — |
| 1979 | 93° | 59° | 76° | — | — |
| 1978 | 85° | 58° | 71° | — | — |
| 1977 | 70° | 59° | 64° | — | — |
| 1976 | 74° | 54° | 64° | — | — |
| 1975 | 73° | 48° | 61° | — | — |
| 1974 | 72° | 55° | 63° | — | — |
| 1973 | 71° | 55° | 63° | — | — |
| 1972 | 76° | 53° | 64° | — | — |
| 1971warmest | 103° | 67° | 85° | — | — |
55 years of data from SANTA CLARA UNIV