Weather on September 30
Santa Clara, CA
55 Years of Data
Avg High
80°F
Avg Low
56°F
Warmest
1978
77°F avg
Coldest
1971
58°F avg
About This Date
September 30th in Santa Clara, CA typically brings warm fall weather, with average highs around 80°F and lows near 56°F. Over 55 years of records, the warmest September 30th was in 1978 (77°F average), while the coldest was 1971 (58°F) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 11% of September 30th dates historically, with the wettest September 30th recording 1.24" 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 30th in Santa Clara, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 77° | 62° | 70° | — | — |
| 2024 | 95° | 56° | 75° | — | — |
| 2023 | 69° | 59° | 64° | 0.2" | — |
| 2022 | 89° | 59° | 74° | — | — |
| 2021 | 87° | 53° | 70° | — | — |
| 2020 | 87° | 62° | 75° | — | — |
| 2019 | 68° | 51° | 60° | — | — |
| 2018 | 79° | 57° | 68° | — | — |
| 2017 | 80° | 58° | 69° | — | — |
| 2016 | 70° | 56° | 63° | — | — |
| 2015 | 65° | 59° | 62° | 0.03" | — |
| 2014 | 76° | 54° | 65° | — | — |
| 2013 | 77° | 57° | 67° | — | — |
| 2012 | 90° | 54° | 72° | — | — |
| 2011 | 76° | 60° | 68° | — | — |
| 2010 | 81° | 60° | 70° | — | — |
| 2009 | 73° | 46° | 60° | — | — |
| 2008 | 80° | 56° | 68° | — | — |
| 2007 | 80° | 46° | 63° | — | — |
| 2006 | 67° | 57° | 62° | — | — |
| 2005 | 88° | 58° | 73° | — | — |
| 2004 | 69° | 55° | 62° | — | — |
| 2003 | 77° | 55° | 66° | — | — |
| 2002 | 72° | 56° | 64° | — | — |
| 2001 | 94° | 55° | 74° | — | — |
| 2000 | 90° | 58° | 74° | — | — |
| 1999 | 91° | 61° | 76° | — | — |
| 1998 | 73° | 58° | 65° | — | — |
| 1997 | 88° | 59° | 73° | — | — |
| 1996 | 69° | 57° | 63° | — | — |
| 1995 | 82° | 53° | 68° | — | — |
| 1994 | 80° | 59° | 70° | — | — |
| 1993 | 80° | 59° | 70° | — | — |
| 1992 | 87° | 59° | 73° | — | — |
| 1991 | 79° | 60° | 69° | — | — |
| 1990 | 88° | 57° | 72° | — | — |
| 1989 | 76° | 54° | 65° | — | — |
| 1988 | 92° | 58° | 75° | — | — |
| 1987 | 84° | 59° | 72° | — | — |
| 1986 | 72° | 57° | 64° | — | — |
| 1985 | 72° | 57° | 64° | — | — |
| 1984 | 68° | 58° | 63° | 0.05" | — |
| 1983 | 71° | 56° | 63° | 1.24" | — |
| 1982 | 75° | 47° | 61° | — | — |
| 1981 | 84° | 50° | 67° | — | — |
| 1980 | 89° | 56° | 72° | — | — |
| 1979 | 85° | 59° | 72° | — | — |
| 1978warmest | 93° | 60° | 77° | — | — |
| 1977 | 77° | 53° | 65° | — | — |
| 1976 | 75° | 59° | 67° | 0.69" | — |
| 1975 | 70° | 51° | 60° | — | — |
| 1974 | 86° | 49° | 67° | — | — |
| 1973 | — | 51° | — | — | — |
| 1972 | 85° | 56° | 70° | — | — |
| 1971coldest | 68° | 49° | 58° | 0.3" | — |
55 years of data from SANTA CLARA UNIV