Weather on June 18
Antioch, CA
55 Years of Data
Avg High
86°F
Avg Low
58°F
Warmest
2017
90°F avg
Coldest
1979
55°F avg
About This Date
June 18th in Antioch, CA typically brings warm summer weather, with average highs around 86°F and lows near 58°F — a 28°F daily swing. Over 54 years of records, the warmest June 18th was in 2017 (90°F average), while the coldest was 1979 (55°F) — a 35°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 2.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.1°F warmer on this date compared to 20-30 years ago.
Planning for June 18th in Antioch, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 89° | 65° | 77° | — | — |
| 2024 | 84° | 64° | 74° | — | — |
| 2023 | 70° | 54° | 62° | — | — |
| 2022 | 68° | 48° | 58° | — | — |
| 2021 | 106° | 69° | 87° | — | — |
| 2020 | 95° | 63° | 79° | — | — |
| 2019 | 93° | 63° | 78° | — | — |
| 2018 | 76° | 50° | 63° | — | — |
| 2017warmest | 100° | 80° | 90° | — | — |
| 2016 | 81° | 59° | 70° | — | — |
| 2015 | 92° | 56° | 74° | — | — |
| 2014 | 90° | 66° | 78° | — | — |
| 2013 | 74° | 56° | 65° | — | — |
| 2012 | 99° | 67° | 83° | — | — |
| 2011 | 74° | 60° | 67° | — | — |
| 2010 | 77° | 52° | 64° | — | — |
| 2009 | 94° | 59° | 76° | — | — |
| 2008 | 90° | 60° | 75° | — | — |
| 2007 | 94° | 59° | 76° | — | — |
| 2006 | 92° | 62° | 77° | — | — |
| 2005 | 72° | 55° | 63° | — | — |
| 2004 | 83° | 55° | 69° | — | — |
| 2003 | 74° | 59° | 66° | — | — |
| 2002 | 91° | 64° | 78° | — | — |
| 2001 | 95° | 68° | 82° | — | — |
| 2000 | 79° | 59° | 69° | — | — |
| 1999 | 91° | 56° | 73° | — | — |
| 1998 | 89° | 56° | 72° | — | — |
| 1997 | 91° | 64° | 78° | — | — |
| 1996 | 82° | 52° | 67° | — | — |
| 1995 | 74° | 55° | 64° | — | — |
| 1994 | 84° | 51° | 68° | — | — |
| 1993 | 97° | 68° | 82° | — | — |
| 1992 | 86° | 56° | 71° | — | — |
| 1990 | 86° | 56° | 71° | — | — |
| 1989 | 91° | 66° | 79° | — | — |
| 1988 | 88° | 62° | 75° | — | — |
| 1987 | 78° | 54° | 66° | — | — |
| 1986 | 79° | 56° | 67° | — | — |
| 1985 | — | 50° | — | — | — |
| 1984 | 96° | 53° | 75° | — | — |
| 1983 | 85° | — | — | — | — |
| 1982 | 87° | 50° | 69° | — | — |
| 1981 | 97° | 68° | 82° | — | — |
| 1980 | 92° | 56° | 74° | — | — |
| 1979coldest | 76° | 35° | 55° | — | — |
| 1978 | 86° | 52° | 69° | — | — |
| 1977 | 75° | 53° | 64° | — | — |
| 1976 | 95° | 56° | 75° | — | — |
| 1975 | 76° | 56° | 66° | — | — |
| 1974 | 73° | 59° | 66° | — | — |
| 1973 | 75° | 59° | 67° | — | — |
| 1972 | 91° | 57° | 74° | — | — |
| 1971 | 91° | 64° | 78° | — | — |
54 years of data from ANTIOCH FIBREBRD MILLS