Weather on September 17
Santa Clara, CA
55 Years of Data
Avg High
79°F
Avg Low
57°F
Warmest
1984
79°F avg
Coldest
1989
61°F avg
About This Date
September 17th in Santa Clara, CA typically brings pleasant fall weather, with average highs around 79°F and lows near 57°F. Over 55 years of records, the warmest September 17th was in 1984 (79°F average), while the coldest was 1989 (61°F) — a 18°F range across recorded history. Rain or other precipitation has occurred on about 5% of September 17th dates historically, with the wettest September 17th recording 0.86" of rain. 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 17th in Santa Clara, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 89° | 62° | 76° | — | — |
| 2024 | 76° | 56° | 66° | — | — |
| 2023 | 78° | 63° | 70° | — | — |
| 2022 | 75° | 54° | 64° | — | — |
| 2021 | 77° | 57° | 67° | — | — |
| 2020 | 82° | 65° | 73° | — | — |
| 2019 | 78° | 55° | 67° | — | — |
| 2018 | 74° | 53° | 63° | — | — |
| 2017 | 81° | 57° | 69° | — | — |
| 2016 | 85° | 58° | 71° | — | — |
| 2015 | 75° | 58° | 66° | — | — |
| 2014 | 83° | 59° | 71° | — | — |
| 2013 | 75° | 56° | 65° | — | — |
| 2012 | 71° | 55° | 63° | — | — |
| 2011 | 79° | 53° | 66° | — | — |
| 2010 | 76° | 64° | 70° | — | — |
| 2009 | 84° | 61° | 72° | — | — |
| 2008 | 73° | 55° | 64° | — | — |
| 2007 | 76° | 55° | 65° | — | — |
| 2006 | 86° | 52° | 69° | — | — |
| 2005 | 74° | 57° | 65° | — | — |
| 2004 | 78° | 59° | 69° | — | — |
| 2003 | 81° | 55° | 68° | — | — |
| 2002 | 78° | 57° | 68° | — | — |
| 2001 | 76° | 58° | 67° | — | — |
| 2000 | 94° | 59° | 76° | — | — |
| 1999 | 75° | 56° | 65° | — | — |
| 1998 | 79° | 57° | 68° | — | — |
| 1997 | 81° | 58° | 69° | — | — |
| 1996 | 83° | 53° | 68° | — | — |
| 1995 | 81° | 56° | 68° | — | — |
| 1994 | 91° | 57° | 74° | — | — |
| 1993 | 67° | 59° | 63° | — | — |
| 1992 | 76° | 59° | 67° | — | — |
| 1991 | 83° | 59° | 71° | — | — |
| 1990 | 83° | 59° | 71° | — | — |
| 1989coldest | 66° | 55° | 61° | 0.13" | — |
| 1988 | 85° | 50° | 67° | — | — |
| 1987 | 85° | 56° | 70° | — | — |
| 1986 | 68° | 60° | 64° | 0.86" | — |
| 1985 | 75° | 54° | 64° | 0.03" | — |
| 1984warmest | 93° | 65° | 79° | — | — |
| 1983 | 81° | 55° | 68° | — | — |
| 1982 | 72° | 58° | 65° | — | — |
| 1981 | 77° | 56° | 66° | — | — |
| 1980 | 79° | 59° | 69° | — | — |
| 1979 | 88° | 59° | 73° | — | — |
| 1978 | 81° | 53° | 67° | — | — |
| 1977 | 74° | 57° | 65° | — | — |
| 1976 | 76° | 58° | 67° | — | — |
| 1975 | 76° | 54° | 65° | — | — |
| 1974 | 81° | 54° | 67° | — | — |
| 1973 | 75° | 50° | 63° | — | — |
| 1972 | 74° | 55° | 64° | — | — |
| 1971 | 80° | 60° | 70° | — | — |
55 years of data from SANTA CLARA UNIV