Weather on June 18
Concord, CA
55 Years of Data
Avg High
86°F
Avg Low
56°F
Warmest
2017
90°F avg
Coldest
2010
61°F avg
About This Date
June 18th in Concord, CA typically brings warm summer weather, with average highs around 86°F and lows near 56°F — a 30°F daily swing. Over 55 years of records, the warmest June 18th was in 2017 (90°F average), while the coldest was 2010 (61°F) — a 29°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 5.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.3°F warmer on this date compared to 20-30 years ago.
Planning for June 18th in Concord, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 96° | 59° | 78° | — | — |
| 2024 | 89° | 57° | 73° | — | — |
| 2023 | 80° | 57° | 69° | — | — |
| 2022 | 76° | 53° | 64° | — | — |
| 2021 | 107° | 65° | 86° | — | — |
| 2020 | 96° | 58° | 77° | — | — |
| 2019 | 91° | 60° | 76° | — | — |
| 2018 | 84° | 58° | 71° | — | — |
| 2017warmest | 108° | 73° | 90° | — | — |
| 2016 | 83° | 59° | 71° | — | — |
| 2015 | 88° | 57° | 72° | — | — |
| 2014 | 91° | 53° | 72° | — | — |
| 2013 | 73° | 54° | 63° | — | — |
| 2012 | 82° | 55° | 69° | — | — |
| 2011 | 80° | 53° | 67° | — | — |
| 2010coldest | 70° | 53° | 61° | — | — |
| 2009 | 93° | 58° | 75° | — | — |
| 2008 | 95° | 58° | 76° | — | — |
| 2007 | 96° | 54° | 75° | — | — |
| 2006 | 86° | 56° | 71° | — | — |
| 2005 | 72° | 56° | 64° | — | — |
| 2004 | 75° | 59° | 67° | — | — |
| 2003 | 83° | 54° | 68° | — | — |
| 2002 | 82° | 63° | 72° | — | — |
| 2001 | 97° | 59° | 78° | — | — |
| 2000 | 74° | 58° | 66° | — | — |
| 1999 | 85° | 55° | 70° | — | — |
| 1998 | 89° | 56° | 72° | — | — |
| 1997 | 91° | 59° | 75° | — | — |
| 1996 | 85° | 56° | 70° | — | — |
| 1995 | 70° | 56° | 63° | — | — |
| 1994 | 84° | 53° | 69° | — | — |
| 1993 | 97° | 64° | 80° | — | — |
| 1992 | 87° | 56° | 71° | — | — |
| 1991 | 83° | 51° | 67° | — | — |
| 1990 | 83° | 50° | 66° | — | — |
| 1989 | 89° | 65° | 77° | — | — |
| 1988 | 102° | 64° | 83° | — | — |
| 1987 | 86° | 46° | 66° | — | — |
| 1986 | 84° | 53° | 69° | — | — |
| 1985 | 88° | 55° | 71° | — | — |
| 1984 | 92° | 44° | 68° | — | — |
| 1983 | 85° | 51° | 68° | — | — |
| 1982 | 72° | 54° | 63° | — | — |
| 1981 | 104° | 74° | 89° | — | — |
| 1980 | 82° | 49° | 65° | — | — |
| 1979 | 83° | 49° | 66° | — | — |
| 1978 | 77° | 53° | 65° | — | — |
| 1977 | 78° | 50° | 64° | — | — |
| 1976 | 84° | 45° | 64° | — | — |
| 1975 | 79° | 47° | 63° | — | — |
| 1974 | 72° | 54° | 63° | — | — |
| 1973 | 94° | 53° | 73° | — | — |
| 1972 | 91° | 53° | 72° | — | — |
| 1971 | 89° | 53° | 71° | — | — |
55 years of data from CONCORD BUCHANAN FLD