Weather on September 2
Sunnyvale, CA
55 Years of Data
Avg High
79°F
Avg Low
59°F
Warmest
2017
88°F avg
Coldest
1974
63°F avg
About This Date
September 2nd in Sunnyvale, CA typically brings pleasant fall weather, with average highs around 79°F and lows near 59°F. Over 55 years of records, the warmest September 2nd was in 2017 (88°F average), while the coldest was 1974 (63°F) — a 25°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 2.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.1°F warmer on this date compared to 20-30 years ago.
Planning for September 2nd in Sunnyvale, CA? Great weather for outdoor activities.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 86° | 64° | 75° | — | — |
| 2024 | 80° | 58° | 69° | — | — |
| 2023 | 74° | 61° | 67° | — | — |
| 2022 | 82° | 60° | 71° | — | — |
| 2021 | 76° | 56° | 66° | — | — |
| 2020 | 76° | 60° | 68° | — | — |
| 2019 | 76° | 63° | 69° | — | — |
| 2018 | 76° | 56° | 66° | — | — |
| 2017warmest | 106° | 71° | 88° | — | — |
| 2016 | 78° | 55° | 67° | — | — |
| 2015 | 78° | 59° | 69° | — | — |
| 2014 | 76° | 61° | 68° | — | — |
| 2013 | 76° | 65° | 70° | — | — |
| 2012 | 80° | 54° | 67° | — | — |
| 2011 | 82° | 59° | 71° | — | — |
| 2010 | 92° | 63° | 77° | — | — |
| 2009 | 92° | 64° | 78° | — | — |
| 2008 | 91° | 56° | 73° | — | — |
| 2007 | 89° | 60° | 75° | — | — |
| 2006 | 70° | 58° | 64° | — | — |
| 2005 | 74° | 59° | 66° | — | — |
| 2004 | 77° | 58° | 67° | — | — |
| 2003 | 77° | 61° | 69° | — | — |
| 2002 | 93° | 63° | 78° | — | — |
| 2001 | 77° | 59° | 68° | — | — |
| 2000 | 71° | 56° | 63° | — | — |
| 1999 | 74° | 55° | 64° | — | — |
| 1998 | 87° | 59° | 73° | — | — |
| 1997 | 82° | 59° | 71° | — | — |
| 1996 | 78° | 54° | 66° | — | — |
| 1995 | 77° | 53° | 65° | — | — |
| 1994 | 75° | 55° | 65° | — | — |
| 1993 | 82° | 64° | 73° | — | — |
| 1992 | 73° | 59° | 66° | — | — |
| 1991 | 86° | 61° | 73° | — | — |
| 1990 | 79° | 55° | 67° | — | — |
| 1989 | 82° | 54° | 68° | — | — |
| 1988 | 72° | 61° | 66° | — | — |
| 1987 | 85° | 64° | 74° | — | — |
| 1986 | 75° | 60° | 68° | — | — |
| 1985 | 72° | 57° | 64° | — | — |
| 1984 | 87° | 60° | 74° | — | — |
| 1983 | 84° | 58° | 71° | — | — |
| 1982 | 79° | 59° | 69° | — | — |
| 1981 | 77° | 55° | 66° | — | — |
| 1980 | 68° | 58° | 63° | — | — |
| 1979 | 79° | 66° | 72° | — | — |
| 1978 | 80° | 63° | 71° | — | — |
| 1977 | 69° | 57° | 63° | — | — |
| 1976 | 78° | 58° | 68° | — | — |
| 1975 | 82° | 51° | 67° | — | — |
| 1974coldest | 70° | 57° | 63° | — | — |
| 1973 | 74° | 57° | 65° | — | — |
| 1972 | 76° | 60° | 68° | — | — |
| 1971 | 75° | 58° | 66° | — | — |
55 years of data from MOFFETT FED AIRFIELD