Weather on August 15
Antioch, CA
55 Years of Data
Avg High
89°F
Avg Low
60°F
Warmest
2020
88°F avg
Coldest
2017
62°F avg
About This Date
August 15th in Antioch, CA typically brings warm summer weather, with average highs around 89°F and lows near 60°F — a 29°F daily swing. Over 54 years of records, the warmest August 15th was in 2020 (88°F average), while the coldest was 2017 (62°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 4% of August 15th dates historically. The last decade has been 2.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.4°F warmer on this date compared to 20-30 years ago.
Planning for August 15th in Antioch, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 83° | 63° | 73° | — | — |
| 2024 | 80° | 63° | 71° | — | — |
| 2023 | 99° | 76° | 87° | — | — |
| 2022 | 96° | 73° | 85° | — | — |
| 2021 | 102° | 64° | 83° | — | — |
| 2020warmest | 106° | 71° | 88° | — | — |
| 2019 | 103° | 68° | 85° | — | — |
| 2018 | 83° | 61° | 72° | — | — |
| 2017coldest | 71° | 53° | 62° | — | — |
| 2016 | 88° | 56° | 72° | — | — |
| 2015 | 98° | 65° | 81° | — | — |
| 2014 | 90° | 60° | 75° | — | — |
| 2013 | 93° | 62° | 78° | — | — |
| 2012 | 83° | 58° | 70° | — | — |
| 2011 | 93° | 61° | 77° | — | — |
| 2010 | 86° | 55° | 71° | — | — |
| 2009 | 91° | 58° | 74° | — | — |
| 2008 | 103° | 63° | 83° | — | — |
| 2007 | 90° | 64° | 77° | — | — |
| 2006 | 84° | 55° | 70° | — | — |
| 2005 | 76° | 60° | 68° | — | — |
| 2004 | 86° | 59° | 73° | — | — |
| 2003 | 93° | 60° | 77° | — | — |
| 2002 | 90° | 58° | 74° | — | — |
| 2001 | 84° | 69° | 77° | — | — |
| 2000 | 92° | 57° | 74° | — | — |
| 1999 | 86° | 55° | 71° | — | — |
| 1998 | 100° | 60° | 80° | — | — |
| 1997 | 94° | 59° | 76° | — | — |
| 1996 | 104° | 64° | 84° | — | — |
| 1995 | 99° | 60° | 79° | — | — |
| 1994 | 101° | 62° | 81° | — | — |
| 1992 | 96° | 67° | 81° | — | — |
| 1991 | 91° | 62° | 77° | 0.03" | — |
| 1990 | 84° | 60° | 72° | — | — |
| 1989 | 99° | 60° | 79° | — | — |
| 1988 | 80° | 55° | 68° | — | — |
| 1987 | 75° | 52° | 63° | — | — |
| 1986 | 85° | 57° | 71° | — | — |
| 1985 | 86° | 53° | 70° | — | — |
| 1984 | 92° | 57° | 74° | — | — |
| 1983 | 87° | 65° | 76° | — | — |
| 1982 | 79° | 52° | 65° | — | — |
| 1981 | 82° | 55° | 69° | — | — |
| 1980 | 82° | 53° | 68° | — | — |
| 1979 | 86° | 56° | 71° | — | — |
| 1978 | 92° | 57° | 74° | — | — |
| 1977 | 85° | 52° | 68° | — | — |
| 1976 | 73° | 56° | 64° | 0.41" | — |
| 1975 | 83° | 52° | 67° | — | — |
| 1974 | — | 51° | — | — | — |
| 1973 | 91° | 58° | 74° | — | — |
| 1972 | 75° | 57° | 66° | — | — |
| 1971 | 87° | 60° | 74° | — | — |
54 years of data from ANTIOCH FIBREBRD MILLS