Weather on August 28
Sunnyvale, CA
55 Years of Data
Avg High
80°F
Avg Low
60°F
Warmest
2009
82°F avg
Coldest
2010
62°F avg
About This Date
August 28th in Sunnyvale, CA typically brings warm summer weather, with average highs around 80°F and lows near 60°F. Over 55 years of records, the warmest August 28th was in 2009 (82°F average), while the coldest was 2010 (62°F) — a 20°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 2.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.0°F warmer on this date compared to 20-30 years ago.
Planning for August 28th 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 | 77° | 59° | 68° | — | — |
| 2024 | 90° | 63° | 76° | — | — |
| 2023 | 87° | 59° | 73° | — | — |
| 2022 | 83° | 58° | 70° | — | — |
| 2021 | 96° | 64° | 80° | — | — |
| 2020 | 78° | 56° | 67° | — | — |
| 2019 | 76° | 63° | 69° | — | — |
| 2018 | 75° | 60° | 68° | — | — |
| 2017 | 82° | 64° | 73° | — | — |
| 2016 | 75° | 61° | 68° | — | — |
| 2015 | 91° | 64° | 78° | — | — |
| 2014 | 79° | 61° | 70° | — | — |
| 2013 | 78° | 61° | 69° | — | — |
| 2012 | 84° | 59° | 72° | — | — |
| 2011 | 78° | 61° | 69° | — | — |
| 2010coldest | 70° | 54° | 62° | — | — |
| 2009warmest | 101° | 63° | 82° | — | — |
| 2008 | 98° | 64° | 81° | — | — |
| 2007 | 86° | 62° | 74° | — | — |
| 2006 | 72° | 58° | 65° | — | — |
| 2005 | 82° | 57° | 70° | — | — |
| 2004 | 93° | 61° | 77° | — | — |
| 2003 | 71° | 57° | 64° | — | — |
| 2002 | 79° | 61° | 70° | — | — |
| 2001 | 82° | 58° | 70° | — | — |
| 2000 | 75° | 57° | 66° | — | — |
| 1999 | 78° | 61° | 69° | — | — |
| 1998 | 77° | 58° | 67° | — | — |
| 1997 | 82° | 58° | 70° | — | — |
| 1996 | 81° | 57° | 69° | — | — |
| 1995 | 78° | 52° | 65° | — | — |
| 1994 | 80° | 57° | 69° | — | — |
| 1993 | 90° | 64° | 77° | — | — |
| 1992 | 75° | 60° | 68° | — | — |
| 1991 | 74° | 63° | 68° | — | — |
| 1990 | 83° | 64° | 73° | — | — |
| 1989 | 74° | 60° | 67° | — | — |
| 1988 | 75° | 63° | 69° | — | — |
| 1987 | 80° | 62° | 71° | — | — |
| 1986 | 72° | 59° | 65° | — | — |
| 1985 | 75° | 55° | 65° | — | — |
| 1984 | 78° | 62° | 70° | — | — |
| 1983 | 76° | 60° | 68° | — | — |
| 1982 | 71° | 58° | 64° | — | — |
| 1981 | 85° | 63° | 74° | — | — |
| 1980 | 72° | 56° | 64° | — | — |
| 1979 | 81° | 62° | 71° | — | — |
| 1978 | 80° | 58° | 69° | — | — |
| 1977 | 94° | 62° | 78° | — | — |
| 1976 | 85° | 61° | 73° | — | — |
| 1975 | 72° | 56° | 64° | — | — |
| 1974 | 71° | 62° | 67° | — | — |
| 1973 | 83° | 57° | 70° | — | — |
| 1972 | 74° | 60° | 67° | — | — |
| 1971 | 76° | 58° | 67° | — | — |
55 years of data from MOFFETT FED AIRFIELD