Weather on October 20
Antioch, CA
55 Years of Data
Avg High
76°F
Avg Low
52°F
Warmest
1991
79°F avg
Coldest
2017
51°F avg
About This Date
October 20th in Antioch, CA typically brings pleasant fall weather, with average highs around 76°F and lows near 52°F. Over 54 years of records, the warmest October 20th was in 1991 (79°F average), while the coldest was 2017 (51°F) — a 28°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 3.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.1°F warmer on this date compared to 20-30 years ago.
Planning for October 20th in Antioch, CA? Great weather for outdoor activities.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 76° | 57° | 66° | — | — |
| 2024 | 75° | 60° | 68° | — | — |
| 2023 | 80° | 53° | 67° | — | — |
| 2022 | 84° | 69° | 77° | — | — |
| 2021 | 61° | 50° | 55° | — | — |
| 2020 | 89° | 59° | 74° | — | — |
| 2019 | 78° | 57° | 68° | — | — |
| 2018 | 79° | 66° | 72° | — | — |
| 2017coldest | 56° | 46° | 51° | — | — |
| 2016 | 81° | 53° | 67° | — | — |
| 2015 | 83° | 62° | 72° | — | — |
| 2014 | 70° | 57° | 63° | — | — |
| 2013 | 81° | 50° | 65° | — | — |
| 2012 | 66° | 54° | 60° | — | — |
| 2011 | 79° | 54° | 66° | — | — |
| 2010 | 78° | 52° | 65° | — | — |
| 2009 | 63° | 49° | 56° | — | — |
| 2008 | 75° | 49° | 62° | — | — |
| 2007 | 67° | — | — | — | — |
| 2006 | 75° | 50° | 63° | — | — |
| 2005 | 73° | 52° | 62° | — | — |
| 2004 | 62° | 44° | 53° | — | — |
| 2003 | 85° | 61° | 73° | — | — |
| 2002 | 76° | 50° | 63° | — | — |
| 2001 | 81° | 47° | 64° | — | — |
| 2000 | 74° | 52° | 63° | — | — |
| 1999 | 81° | 54° | 67° | — | — |
| 1998 | 83° | 54° | 68° | — | — |
| 1997 | 73° | 48° | 61° | — | — |
| 1996 | 70° | 50° | 60° | — | — |
| 1995 | 87° | 53° | 70° | — | — |
| 1994 | 74° | 44° | 59° | — | — |
| 1993 | 77° | 49° | 63° | — | — |
| 1992 | 78° | 54° | 66° | — | — |
| 1991warmest | 90° | 68° | 79° | — | — |
| 1990 | 72° | 55° | 63° | — | — |
| 1989 | 83° | 58° | 70° | — | — |
| 1987 | 76° | 49° | 62° | — | — |
| 1986 | 75° | 47° | 61° | — | — |
| 1985 | 68° | 46° | 57° | — | — |
| 1984 | 65° | 50° | 57° | — | — |
| 1983 | 80° | 48° | 64° | — | — |
| 1982 | 79° | 54° | 66° | — | — |
| 1981 | 81° | 46° | 63° | — | — |
| 1980 | 77° | 44° | 61° | — | — |
| 1979 | 70° | 48° | 59° | — | — |
| 1978 | 78° | 47° | 62° | — | — |
| 1977 | 72° | 45° | 58° | — | — |
| 1976 | 79° | 49° | 64° | — | — |
| 1975 | 83° | 51° | 67° | — | — |
| 1974 | 77° | 50° | 64° | — | — |
| 1973 | 77° | 50° | 64° | — | — |
| 1972 | 68° | 51° | 60° | — | — |
| 1971 | 73° | 43° | 58° | — | — |
54 years of data from ANTIOCH FIBREBRD MILLS