Weather on August 31
Antioch, CA
55 Years of Data
Avg High
88°F
Avg Low
59°F
Warmest
2005
85°F avg
Coldest
2012
59°F avg
About This Date
August 31st in Antioch, CA typically brings warm summer weather, with average highs around 88°F and lows near 59°F — a 29°F daily swing. Over 55 years of records, the warmest August 31st was in 2005 (85°F average), while the coldest was 2012 (59°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 2% of August 31st 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 31st in Antioch, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.0°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 93° | 77° | 85° | — | — |
| 2024 | 81° | 62° | 71° | — | — |
| 2023 | 85° | 63° | 74° | — | — |
| 2022 | 87° | 72° | 79° | — | — |
| 2021 | 90° | 60° | 75° | — | — |
| 2020 | 87° | 58° | 72° | — | — |
| 2019 | 95° | 61° | 78° | — | — |
| 2018 | 83° | 56° | 69° | — | — |
| 2017 | 95° | 71° | 83° | — | — |
| 2016 | 87° | 62° | 75° | — | — |
| 2015 | 90° | 63° | 76° | — | — |
| 2014 | 91° | 66° | 79° | — | — |
| 2013 | 90° | 61° | 75° | — | — |
| 2012coldest | 67° | 52° | 59° | — | — |
| 2011 | 84° | 58° | 71° | — | — |
| 2010 | 86° | 57° | 72° | — | — |
| 2009 | 99° | 60° | 79° | — | — |
| 2008 | 80° | 60° | 70° | — | — |
| 2007 | 94° | 66° | 80° | — | — |
| 2006 | 93° | 60° | 77° | — | — |
| 2005warmest | 96° | 74° | 85° | — | — |
| 2004 | 89° | 63° | 76° | — | — |
| 2003 | 92° | 57° | 74° | — | — |
| 2002 | 94° | 57° | 75° | — | — |
| 2001 | 84° | 58° | 71° | — | — |
| 2000 | 76° | 58° | 67° | — | — |
| 1999 | 83° | 62° | 72° | — | — |
| 1998 | 100° | 58° | 79° | — | — |
| 1997 | 87° | 62° | 75° | — | — |
| 1996 | 101° | 61° | 81° | — | — |
| 1995 | 87° | 54° | 70° | — | — |
| 1994 | 92° | 56° | 74° | — | — |
| 1993 | 77° | 55° | 66° | — | — |
| 1992 | 77° | 54° | 65° | — | — |
| 1991 | 89° | 57° | 73° | — | — |
| 1990 | 85° | 57° | 71° | — | — |
| 1989 | 81° | 56° | 68° | — | — |
| 1988 | 101° | 60° | 80° | — | — |
| 1987 | 97° | 61° | 79° | — | — |
| 1986 | 89° | 57° | 73° | — | — |
| 1985 | 90° | 59° | 74° | — | — |
| 1984 | 80° | 50° | 65° | 0.03" | — |
| 1983 | 86° | 58° | 72° | — | — |
| 1982 | 87° | 49° | 68° | — | — |
| 1981 | 91° | 58° | 74° | — | — |
| 1980 | 85° | 50° | 67° | — | — |
| 1979 | 81° | 55° | 68° | — | — |
| 1978 | 89° | 55° | 72° | — | — |
| 1977 | 98° | 59° | 79° | — | — |
| 1976 | 102° | 60° | 81° | — | — |
| 1975 | 85° | 51° | 68° | — | — |
| 1974 | 83° | 54° | 68° | — | — |
| 1973 | 82° | 57° | 70° | — | — |
| 1972 | 90° | 61° | 75° | — | — |
| 1971 | 82° | 58° | 70° | — | — |
55 years of data from ANTIOCH FIBREBRD MILLS