Weather on September 1
San Jose, CA
55 Years of Data
Avg High
83°F
Avg Low
58°F
Warmest
2017
88°F avg
Coldest
2000
61°F avg
About This Date
September 1st in San Jose, CA typically brings warm fall weather, with average highs around 83°F and lows near 58°F — a 25°F daily swing. Over 55 years of records, the warmest September 1st was in 2017 (88°F average), while the coldest was 2000 (61°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 2% of September 1st dates historically. The last decade has been 2.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.3°F warmer on this date compared to 20-30 years ago.
Planning for September 1st in San Jose, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 90° | 61° | 75° | — | — |
| 2024 | 79° | 60° | 69° | — | — |
| 2023 | 77° | 61° | 69° | — | — |
| 2022 | 90° | 60° | 75° | — | — |
| 2021 | 81° | 57° | 69° | — | — |
| 2020 | 75° | 57° | 66° | — | — |
| 2019 | 89° | 62° | 76° | — | — |
| 2018 | 77° | 56° | 66° | — | — |
| 2017warmest | 108° | 69° | 88° | — | — |
| 2016 | 75° | 59° | 67° | — | — |
| 2015 | 83° | 59° | 71° | — | — |
| 2014 | 86° | 58° | 72° | — | — |
| 2013 | 81° | 62° | 71° | — | — |
| 2012 | 74° | 57° | 65° | — | — |
| 2011 | 84° | 55° | 70° | — | — |
| 2010 | 94° | 59° | 76° | — | — |
| 2009 | 83° | 60° | 71° | — | — |
| 2008 | 87° | 55° | 71° | — | — |
| 2007 | 90° | 64° | 77° | — | — |
| 2006 | 79° | 57° | 68° | — | — |
| 2005 | 79° | 57° | 68° | — | — |
| 2004 | 77° | 63° | 70° | — | — |
| 2003 | 87° | 60° | 74° | — | — |
| 2002 | 94° | 62° | 78° | — | — |
| 2001 | 83° | 56° | 69° | — | — |
| 2000coldest | 63° | 59° | 61° | 0.15" | — |
| 1999 | 77° | 51° | 64° | — | — |
| 1998 | 86° | 59° | 73° | — | — |
| 1997 | 81° | 61° | 71° | — | — |
| 1996 | 82° | 56° | 69° | — | — |
| 1995 | 73° | 58° | 65° | — | — |
| 1994 | 79° | 57° | 68° | — | — |
| 1993 | 85° | 61° | 73° | — | — |
| 1992 | 79° | 60° | 69° | — | — |
| 1991 | 85° | 60° | 72° | — | — |
| 1990 | 80° | 56° | 68° | — | — |
| 1989 | 85° | 58° | 71° | — | — |
| 1988 | 80° | 62° | 71° | — | — |
| 1987 | 85° | 63° | 74° | — | — |
| 1986 | 88° | 59° | 73° | — | — |
| 1985 | 84° | 63° | 73° | — | — |
| 1984 | 92° | 55° | 73° | — | — |
| 1983 | 80° | 63° | 71° | — | — |
| 1982 | 87° | 57° | 72° | — | — |
| 1981 | 84° | 54° | 69° | — | — |
| 1980 | 78° | 54° | 66° | — | — |
| 1979 | 84° | 56° | 70° | — | — |
| 1978 | 90° | 59° | 74° | — | — |
| 1977 | 79° | 56° | 67° | — | — |
| 1976 | 89° | 59° | 74° | — | — |
| 1975 | 78° | 50° | 64° | — | — |
| 1974 | 78° | 56° | 67° | — | — |
| 1973 | 82° | 52° | 67° | — | — |
| 1972 | 81° | 59° | 70° | — | — |
| 1971 | 79° | 55° | 67° | — | — |
55 years of data from SAN JOSE