Weather on August 14
Sunnyvale, CA
55 Years of Data
Avg High
78°F
Avg Low
60°F
Warmest
2020
88°F avg
Coldest
1975
60°F avg
About This Date
August 14th in Sunnyvale, CA typically brings pleasant summer weather, with average highs around 78°F and lows near 60°F. Over 55 years of records, the warmest August 14th was in 2020 (88°F average), while the coldest was 1975 (60°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 2% of August 14th dates historically. The last decade has been 5.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.3°F warmer on this date compared to 20-30 years ago.
Planning for August 14th in Sunnyvale, CA? Great weather for outdoor activities.
Warming Trend
1.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 75° | 63° | 69° | — | — |
| 2024 | 86° | 60° | 73° | — | — |
| 2023 | 88° | 66° | 77° | — | — |
| 2022 | 88° | 55° | 71° | — | — |
| 2021 | 81° | 62° | 71° | — | — |
| 2020warmest | 103° | 73° | 88° | — | — |
| 2019 | 95° | 63° | 79° | — | — |
| 2018 | 71° | 59° | 65° | — | — |
| 2017 | 73° | 61° | 67° | — | — |
| 2016 | 80° | 60° | 70° | — | — |
| 2015 | 78° | 63° | 70° | — | — |
| 2014 | 76° | 61° | 68° | — | — |
| 2013 | 76° | 58° | 67° | — | — |
| 2012 | 76° | 61° | 68° | — | — |
| 2011 | 76° | 58° | 67° | — | — |
| 2010 | 69° | 58° | 63° | — | — |
| 2009 | 76° | 58° | 67° | — | — |
| 2008 | 80° | 61° | 70° | — | — |
| 2007 | 74° | 53° | 63° | — | — |
| 2006 | 73° | 58° | 65° | — | — |
| 2005 | 73° | 60° | 67° | — | — |
| 2004 | 73° | 60° | 67° | — | — |
| 2003 | 75° | 59° | 67° | — | — |
| 2002 | 75° | 60° | 68° | — | — |
| 2001 | 72° | 58° | 65° | — | — |
| 2000 | 80° | 57° | 69° | — | — |
| 1999 | 73° | 53° | 63° | — | — |
| 1998 | 79° | 62° | 70° | — | — |
| 1997 | 85° | 62° | 73° | — | — |
| 1996 | 75° | 61° | 68° | — | — |
| 1995 | 94° | 64° | 79° | — | — |
| 1994 | 95° | 62° | 79° | — | — |
| 1993 | 80° | 59° | 70° | — | — |
| 1992 | 78° | 64° | 71° | — | — |
| 1991 | 78° | 64° | 71° | — | — |
| 1990 | 70° | 59° | 64° | — | — |
| 1989 | 88° | 60° | 74° | — | — |
| 1988 | 73° | 59° | 66° | — | — |
| 1987 | 68° | 58° | 63° | — | — |
| 1986 | 75° | 59° | 67° | — | — |
| 1985 | 70° | 58° | 64° | — | — |
| 1984 | 80° | 59° | 70° | — | — |
| 1983 | 78° | 62° | 70° | — | — |
| 1982 | 71° | 57° | 64° | — | — |
| 1981 | 71° | 60° | 66° | — | — |
| 1980 | 72° | 56° | 64° | — | — |
| 1979 | 74° | 59° | 66° | — | — |
| 1978 | 87° | 57° | 72° | — | — |
| 1977 | 73° | 57° | 65° | — | — |
| 1976 | 73° | 59° | 66° | 0.13" | — |
| 1975coldest | 67° | 54° | 60° | — | — |
| 1974 | 78° | 57° | 68° | — | — |
| 1973 | 79° | 60° | 69° | — | — |
| 1972 | 70° | 53° | 61° | — | — |
| 1971 | 77° | 58° | 67° | — | — |
55 years of data from MOFFETT FED AIRFIELD