Weather on May 18
Concord, CA
55 Years of Data
Avg High
79°F
Avg Low
51°F
Warmest
1997
82°F avg
Coldest
1974
50°F avg
About This Date
May 18th in Concord, CA typically brings pleasant spring weather, with average highs around 79°F and lows near 51°F — a 28°F daily swing. Over 55 years of records, the warmest May 18th was in 1997 (82°F average), while the coldest was 1974 (50°F) — a 32°F range across recorded history. Rain or other precipitation has occurred on about 11% of May 18th dates historically, with the wettest May 18th recording 0.94" of rain. 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 May 18th in Concord, CA? Great weather for outdoor activities.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 81° | 52° | 66° | — | — |
| 2024 | 71° | 55° | 63° | — | — |
| 2023 | 80° | 53° | 67° | — | — |
| 2022 | 94° | 53° | 73° | — | — |
| 2021 | 81° | 53° | 67° | — | — |
| 2020 | 69° | 55° | 62° | 0.41" | — |
| 2019 | 59° | 50° | 55° | 0.94" | — |
| 2018 | 75° | 55° | 65° | — | — |
| 2017 | 86° | 51° | 69° | — | — |
| 2016 | 95° | 59° | 77° | — | — |
| 2015 | 68° | 54° | 61° | — | — |
| 2014 | 76° | 56° | 66° | — | — |
| 2013 | 78° | 50° | 64° | — | — |
| 2012 | 82° | 51° | 67° | — | — |
| 2011 | 70° | 50° | 60° | 0.05" | — |
| 2010 | 72° | 54° | 63° | — | — |
| 2009 | 87° | 55° | 71° | — | — |
| 2008 | 89° | 55° | 72° | — | — |
| 2007 | 75° | 52° | 63° | — | — |
| 2006 | 84° | 53° | 69° | — | — |
| 2005 | 72° | 58° | 65° | 0.03" | — |
| 2004 | 73° | 53° | 63° | — | — |
| 2003 | 78° | 48° | 63° | — | — |
| 2002 | 69° | 49° | 59° | — | — |
| 2001 | 89° | 55° | 72° | — | — |
| 2000 | 86° | 54° | 70° | — | — |
| 1999 | 71° | — | — | — | — |
| 1998 | 76° | 48° | 62° | — | — |
| 1997warmest | 99° | 65° | 82° | — | — |
| 1996 | 69° | 56° | 62° | 0.41" | — |
| 1995 | 78° | 53° | 66° | — | — |
| 1994 | 70° | 52° | 61° | — | — |
| 1993 | 83° | 52° | 67° | — | — |
| 1992 | 79° | 57° | 68° | — | — |
| 1991 | 64° | 47° | 55° | — | — |
| 1990 | 69° | 44° | 57° | — | — |
| 1989 | 76° | 47° | 61° | — | — |
| 1988 | 85° | 47° | 66° | — | — |
| 1987 | 74° | 55° | 64° | — | — |
| 1986 | 88° | 51° | 69° | — | — |
| 1985 | 79° | 46° | 62° | — | — |
| 1984 | 85° | 45° | 65° | — | — |
| 1983 | 89° | 52° | 70° | — | — |
| 1982 | 79° | 47° | 63° | — | — |
| 1981 | 70° | 58° | 64° | 0.18" | — |
| 1980 | 89° | 51° | 70° | — | — |
| 1979 | 88° | 55° | 71° | — | — |
| 1978 | 90° | 49° | 69° | — | — |
| 1977 | 64° | 44° | 54° | — | — |
| 1976 | 78° | 43° | 60° | — | — |
| 1975 | 82° | 48° | 65° | — | — |
| 1974coldest | 65° | 35° | 50° | — | — |
| 1973 | 93° | 53° | 73° | — | — |
| 1972 | 74° | 46° | 60° | — | — |
| 1971 | 81° | 39° | 60° | — | — |
55 years of data from CONCORD BUCHANAN FLD