Weather on September 5
Sunnyvale, CA
55 Years of Data
Avg High
80°F
Avg Low
59°F
Warmest
2022
86°F avg
Coldest
1980
63°F avg
About This Date
September 5th in Sunnyvale, CA typically brings warm fall weather, with average highs around 80°F and lows near 59°F. Over 55 years of records, the warmest September 5th was in 2022 (86°F average), while the coldest was 1980 (63°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 2% of September 5th dates historically. The last decade has been 3.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.5°F warmer on this date compared to 20-30 years ago.
Planning for September 5th in Sunnyvale, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 72° | 63° | 67° | — | — |
| 2024 | 93° | 63° | 78° | — | — |
| 2023 | 84° | 58° | 71° | — | — |
| 2022warmest | 104° | 68° | 86° | — | — |
| 2021 | 88° | 56° | 72° | — | — |
| 2020 | 98° | 61° | 79° | — | — |
| 2019 | 74° | 61° | 67° | — | — |
| 2018 | 73° | 60° | 67° | — | — |
| 2017 | 85° | 68° | 76° | — | — |
| 2016 | 76° | 52° | 64° | — | — |
| 2015 | 81° | 51° | 66° | — | — |
| 2014 | 76° | 61° | 68° | — | — |
| 2013 | 80° | 59° | 70° | — | — |
| 2012 | 70° | 59° | 64° | — | — |
| 2011 | 71° | 59° | 65° | — | — |
| 2010 | 77° | 54° | 65° | — | — |
| 2009 | 78° | 54° | 66° | — | — |
| 2008 | 97° | 63° | 80° | — | — |
| 2007 | 89° | 58° | 73° | — | — |
| 2006 | 79° | 58° | 68° | — | — |
| 2005 | 77° | 54° | 65° | — | — |
| 2004 | 96° | 63° | 79° | — | — |
| 2003 | 74° | 56° | 65° | — | — |
| 2002 | 75° | 56° | 65° | — | — |
| 2001 | 74° | 57° | 65° | — | — |
| 2000 | 79° | 51° | 65° | 0.15" | — |
| 1999 | 83° | 55° | 69° | — | — |
| 1998 | 82° | 64° | 73° | — | — |
| 1997 | 90° | 65° | 77° | — | — |
| 1996 | 82° | 55° | 69° | — | — |
| 1995 | 89° | 55° | 72° | — | — |
| 1994 | 88° | 60° | 74° | — | — |
| 1993 | 71° | 59° | 65° | — | — |
| 1992 | 85° | 58° | 71° | — | — |
| 1991 | 77° | 63° | 70° | — | — |
| 1990 | 78° | 60° | 69° | — | — |
| 1989 | 74° | 57° | 65° | — | — |
| 1988 | 81° | 61° | 71° | — | — |
| 1987 | 79° | 54° | 66° | — | — |
| 1986 | 74° | 60° | 67° | — | — |
| 1985 | 73° | 59° | 66° | — | — |
| 1984 | 78° | 64° | 71° | — | — |
| 1983 | 85° | 64° | 74° | — | — |
| 1982 | 84° | 58° | 71° | — | — |
| 1981 | 81° | 57° | 69° | — | — |
| 1980coldest | 67° | 59° | 63° | — | — |
| 1979 | 82° | 60° | 71° | — | — |
| 1978 | 78° | 62° | 70° | — | — |
| 1977 | 82° | 59° | 71° | — | — |
| 1976 | 74° | 61° | 67° | — | — |
| 1975 | 76° | 58° | 67° | — | — |
| 1974 | 88° | 58° | 73° | — | — |
| 1973 | 70° | 59° | 64° | — | — |
| 1972 | 74° | 60° | 67° | — | — |
| 1971 | 73° | 58° | 65° | — | — |
55 years of data from MOFFETT FED AIRFIELD