Weather on September 8
Sunnyvale, CA
55 Years of Data
Avg High
79°F
Avg Low
59°F
Warmest
2022
87°F avg
Coldest
1975
59°F avg
About This Date
September 8th 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 8th was in 2022 (87°F average), while the coldest was 1975 (59°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 5% of September 8th dates historically, with the wettest September 8th recording 0.51" of rain. The last decade has been 4.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.6°F warmer on this date compared to 20-30 years ago.
Planning for September 8th in Sunnyvale, CA? Great weather for outdoor activities.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 77° | 63° | 70° | — | — |
| 2024 | 90° | 60° | 75° | — | — |
| 2023 | 87° | 59° | 73° | — | — |
| 2022warmest | 104° | 70° | 87° | — | — |
| 2021 | 91° | 64° | 78° | — | — |
| 2020 | 84° | 64° | 74° | — | — |
| 2019 | 78° | 57° | 68° | — | — |
| 2018 | 82° | 57° | 70° | — | — |
| 2017 | 75° | 61° | 68° | — | — |
| 2016 | 75° | 60° | 68° | — | — |
| 2015 | 97° | 59° | 78° | — | — |
| 2014 | 69° | 56° | 62° | — | — |
| 2013 | 83° | 62° | 72° | — | — |
| 2012 | 68° | 56° | 62° | — | — |
| 2011 | 75° | 59° | 67° | — | — |
| 2010 | 69° | 59° | 64° | — | — |
| 2009 | 79° | 54° | 66° | — | — |
| 2008 | 75° | 59° | 67° | — | — |
| 2007 | 73° | 62° | 68° | — | — |
| 2006 | 74° | 57° | 65° | — | — |
| 2005 | 74° | 58° | 66° | — | — |
| 2004 | 94° | 63° | 78° | — | — |
| 2003 | 78° | 54° | 66° | — | — |
| 2002 | 79° | 51° | 65° | — | — |
| 2001 | 74° | 55° | 64° | — | — |
| 2000 | 77° | 58° | 67° | — | — |
| 1999 | 70° | 60° | 65° | 0.13" | — |
| 1998 | 73° | 59° | 66° | — | — |
| 1997 | 86° | 62° | 74° | — | — |
| 1996 | 91° | 58° | 74° | — | — |
| 1995 | 84° | 58° | 71° | — | — |
| 1994 | 78° | 53° | 66° | — | — |
| 1993 | 85° | 62° | 73° | — | — |
| 1992 | 84° | 56° | 70° | — | — |
| 1991 | 72° | 58° | 65° | — | — |
| 1990 | 77° | 56° | 66° | — | — |
| 1989 | 71° | 60° | 66° | — | — |
| 1988 | 73° | 56° | 64° | — | — |
| 1987 | 86° | 57° | 72° | — | — |
| 1986 | 70° | 57° | 63° | — | — |
| 1985 | 70° | 58° | 64° | 0.51" | — |
| 1984 | 100° | 67° | 83° | — | — |
| 1983 | 75° | 59° | 67° | — | — |
| 1982 | 81° | 63° | 72° | — | — |
| 1981 | 74° | 60° | 67° | — | — |
| 1980 | 68° | 62° | 65° | — | — |
| 1979 | 81° | 63° | 72° | — | — |
| 1978 | 77° | 53° | 65° | — | — |
| 1977 | 81° | 59° | 70° | — | — |
| 1976 | 98° | 63° | 80° | — | — |
| 1975coldest | 62° | 55° | 59° | 0.05" | — |
| 1974 | 77° | 60° | 69° | — | — |
| 1973 | 90° | 58° | 74° | — | — |
| 1972 | 74° | 59° | 66° | — | — |
| 1971 | 82° | 56° | 69° | — | — |
55 years of data from MOFFETT FED AIRFIELD