Weather on August 20
Concord, CA
55 Years of Data
Avg High
85°F
Avg Low
57°F
Warmest
1995
80°F avg
Coldest
2001
63°F avg
About This Date
August 20th in Concord, CA typically brings warm summer weather, with average highs around 85°F and lows near 57°F — a 28°F daily swing. Over 55 years of records, the warmest August 20th was in 1995 (80°F average), while the coldest was 2001 (63°F) — a 17°F range across recorded history. Rain or other precipitation has occurred on about 5% of August 20th dates historically, with the wettest August 20th recording 1.42" of rain. The last decade has been 4.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.6°F warmer on this date compared to 20-30 years ago.
Planning for August 20th in Concord, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 97° | 59° | 78° | — | — |
| 2024 | 92° | 61° | 76° | — | — |
| 2023 | 93° | 63° | 78° | — | — |
| 2022 | 99° | 59° | 79° | — | — |
| 2021 | 81° | 60° | 70° | — | — |
| 2020 | 94° | 65° | 79° | — | — |
| 2019 | 83° | 62° | 72° | — | — |
| 2018 | 83° | 58° | 70° | — | — |
| 2017 | 81° | 61° | 71° | — | — |
| 2016 | 85° | 58° | 71° | — | — |
| 2015 | 80° | 62° | 71° | — | — |
| 2014 | 71° | 60° | 66° | — | — |
| 2013 | 87° | 58° | 72° | — | — |
| 2012 | 89° | 55° | 72° | — | — |
| 2011 | 78° | 57° | 68° | — | — |
| 2010 | 83° | 54° | 68° | — | — |
| 2009 | 79° | 58° | 68° | — | — |
| 2008 | 85° | 61° | 73° | — | — |
| 2007 | 91° | 63° | 77° | — | — |
| 2006 | 79° | 55° | 67° | — | — |
| 2005 | 83° | 55° | 69° | — | — |
| 2004 | 86° | 60° | 73° | — | — |
| 2003 | 89° | 59° | 74° | — | — |
| 2002 | 85° | 51° | 68° | — | — |
| 2001coldest | 69° | 57° | 63° | — | — |
| 2000 | 89° | 58° | 73° | — | — |
| 1999 | 88° | 58° | 73° | — | — |
| 1998 | 78° | 57° | 68° | — | — |
| 1997 | 76° | 60° | 68° | 1.02" | — |
| 1996 | 82° | 56° | 69° | — | — |
| 1995warmest | 96° | 64° | 80° | — | — |
| 1994 | 89° | 58° | 73° | — | — |
| 1993 | 81° | 60° | 70° | — | — |
| 1992 | 94° | 55° | 74° | — | — |
| 1991 | 84° | 59° | 72° | — | — |
| 1990 | 82° | 57° | 70° | — | — |
| 1989 | 78° | 53° | 66° | — | — |
| 1988 | 84° | 55° | 70° | — | — |
| 1987 | 82° | 48° | 65° | — | — |
| 1986 | 90° | 52° | 71° | — | — |
| 1985 | 86° | 47° | 66° | — | — |
| 1984 | 85° | 61° | 73° | — | — |
| 1983 | 82° | 52° | 67° | 1.42" | — |
| 1982 | 93° | 50° | 72° | 0.05" | — |
| 1981 | 84° | 61° | 72° | — | — |
| 1980 | 87° | 55° | 71° | — | — |
| 1979 | 82° | 58° | 70° | — | — |
| 1978 | 89° | — | — | — | — |
| 1977 | 86° | 55° | 71° | — | — |
| 1976 | 89° | 59° | 74° | — | — |
| 1975 | 89° | 51° | 70° | — | — |
| 1974 | 92° | 50° | 71° | — | — |
| 1973 | 92° | 52° | 72° | — | — |
| 1972 | 86° | 57° | 72° | — | — |
| 1971 | 84° | 55° | 70° | — | — |
55 years of data from CONCORD BUCHANAN FLD