Weather on August 12
Sunnyvale, CA
55 Years of Data
Avg High
77°F
Avg Low
59°F
Warmest
1998
78°F avg
Coldest
1975
61°F avg
About This Date
August 12th in Sunnyvale, CA typically brings pleasant summer weather, with average highs around 77°F and lows near 59°F. Over 55 years of records, the warmest August 12th was in 1998 (78°F average), while the coldest was 1975 (61°F) — a 17°F range across recorded history. Rain or other precipitation has occurred on about 2% of August 12th dates historically. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for August 12th 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 | 70° | 61° | 65° | — | — |
| 2024 | 81° | 61° | 71° | — | — |
| 2023 | 86° | 61° | 73° | — | — |
| 2022 | 79° | 58° | 68° | — | — |
| 2021 | 83° | 62° | 72° | — | — |
| 2020 | 83° | 62° | 72° | — | — |
| 2019 | 88° | 61° | 74° | — | — |
| 2018 | 78° | 60° | 69° | — | — |
| 2017 | 71° | 59° | 65° | — | — |
| 2016 | 77° | 61° | 69° | — | — |
| 2015 | 81° | 59° | 70° | — | — |
| 2014 | 77° | 59° | 68° | — | — |
| 2013 | 75° | 59° | 67° | — | — |
| 2012 | 77° | 59° | 68° | — | — |
| 2011 | 73° | 55° | 64° | — | — |
| 2010 | 74° | 58° | 66° | — | — |
| 2009 | 87° | 59° | 73° | — | — |
| 2008 | 80° | 59° | 70° | 0.03" | — |
| 2007 | 72° | 55° | 63° | — | — |
| 2006 | 78° | 56° | 67° | — | — |
| 2005 | 80° | 58° | 69° | — | — |
| 2004 | 76° | 60° | 68° | — | — |
| 2003 | 78° | 56° | 67° | — | — |
| 2002 | 78° | 58° | 68° | — | — |
| 2001 | 70° | 56° | 63° | — | — |
| 2000 | 79° | 58° | 68° | — | — |
| 1999 | 72° | 57° | 64° | — | — |
| 1998warmest | 91° | 65° | 78° | — | — |
| 1997 | 81° | 63° | 72° | — | — |
| 1996 | 89° | 64° | 77° | — | — |
| 1995 | 91° | 57° | 74° | — | — |
| 1994 | 88° | 58° | 73° | — | — |
| 1993 | 77° | 57° | 67° | — | — |
| 1992 | 76° | 65° | 70° | — | — |
| 1991 | 75° | 61° | 68° | — | — |
| 1990 | 73° | 62° | 68° | — | — |
| 1989 | 73° | 58° | 65° | — | — |
| 1988 | 69° | 59° | 64° | — | — |
| 1987 | 75° | 58° | 66° | — | — |
| 1986 | 76° | 61° | 68° | — | — |
| 1985 | 75° | 57° | 66° | — | — |
| 1984 | 78° | 60° | 69° | — | — |
| 1983 | 81° | 63° | 72° | — | — |
| 1982 | 81° | 55° | 68° | — | — |
| 1981 | 77° | 62° | 70° | — | — |
| 1980 | 71° | 58° | 64° | — | — |
| 1979 | 74° | 56° | 65° | — | — |
| 1978 | 77° | 58° | 67° | — | — |
| 1977 | 71° | 60° | 66° | — | — |
| 1976 | 72° | 59° | 65° | — | — |
| 1975coldest | 69° | 53° | 61° | — | — |
| 1974 | 76° | 62° | 69° | — | — |
| 1973 | 68° | 59° | 64° | — | — |
| 1972 | 77° | 56° | 66° | — | — |
| 1971 | 77° | 61° | 69° | — | — |
55 years of data from MOFFETT FED AIRFIELD