Weather on June 20
Antioch, CA
55 Years of Data
Avg High
86°F
Avg Low
57°F
Warmest
1981
89°F avg
Coldest
1998
56°F avg
About This Date
June 20th in Antioch, CA typically brings warm summer weather, with average highs around 86°F and lows near 57°F — a 29°F daily swing. Over 54 years of records, the warmest June 20th was in 1981 (89°F average), while the coldest was 1998 (56°F) — a 33°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 1.0°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.0°F cooler on this date compared to 20-30 years ago.
Planning for June 20th in Antioch, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 67° | 50° | 58° | — | — |
| 2024 | 76° | 54° | 65° | — | — |
| 2023 | 73° | 48° | 61° | — | — |
| 2022 | 87° | 61° | 74° | — | — |
| 2021 | 94° | 58° | 76° | — | — |
| 2020 | 89° | 57° | 73° | — | — |
| 2019 | 84° | 59° | 72° | — | — |
| 2018 | 75° | 61° | 68° | — | — |
| 2017 | 92° | 77° | 84° | — | — |
| 2016 | 94° | 61° | 77° | — | — |
| 2015 | 96° | 57° | 77° | — | — |
| 2014 | 93° | 58° | 75° | — | — |
| 2013 | 84° | 59° | 72° | — | — |
| 2012 | 97° | 65° | 81° | — | — |
| 2011 | 99° | — | — | — | — |
| 2010 | 89° | 54° | 71° | — | — |
| 2009 | 81° | 54° | 67° | — | — |
| 2008 | 100° | 74° | 87° | — | — |
| 2007 | 67° | 48° | 57° | — | — |
| 2006 | 84° | 55° | 70° | — | — |
| 2005 | 80° | 56° | 68° | — | — |
| 2004 | 86° | 57° | 72° | — | — |
| 2003 | 71° | 54° | 62° | — | — |
| 2002 | 87° | 53° | 70° | — | — |
| 2001 | 95° | 73° | 84° | — | — |
| 2000 | 96° | 62° | 79° | — | — |
| 1999 | 91° | 55° | 73° | — | — |
| 1998coldest | 65° | 47° | 56° | — | — |
| 1997 | 96° | 62° | 79° | — | — |
| 1996 | 92° | 58° | 75° | — | — |
| 1995 | 77° | 58° | 67° | — | — |
| 1994 | 90° | 52° | 71° | — | — |
| 1993 | 101° | 63° | 82° | — | — |
| 1992 | 90° | 60° | 75° | — | — |
| 1990 | 100° | 67° | 83° | — | — |
| 1989 | 87° | 63° | 75° | — | — |
| 1988 | 102° | 58° | 80° | — | — |
| 1987 | 85° | 54° | 69° | — | — |
| 1986 | 87° | 54° | 70° | — | — |
| 1985 | — | 53° | — | — | — |
| 1984 | 75° | 56° | 65° | — | — |
| 1983 | 89° | 58° | 73° | — | — |
| 1982 | 82° | 51° | 67° | — | — |
| 1981warmest | 109° | 68° | 89° | — | — |
| 1980 | 83° | 54° | 68° | — | — |
| 1979 | 86° | 52° | 69° | — | — |
| 1978 | 82° | 52° | 67° | — | — |
| 1977 | 84° | 54° | 69° | — | — |
| 1976 | 83° | 54° | 68° | — | — |
| 1975 | 69° | 50° | 60° | — | — |
| 1974 | 75° | 58° | 66° | — | — |
| 1973 | 96° | 60° | 78° | — | — |
| 1972 | 80° | 54° | 67° | — | — |
| 1971 | 80° | 56° | 68° | — | — |
54 years of data from ANTIOCH FIBREBRD MILLS