Weather on May 20
Antioch, CA
55 Years of Data
Avg High
79°F
Avg Low
54°F
Warmest
2001
83°F avg
Coldest
1994
56°F avg
About This Date
May 20th in Antioch, CA typically brings pleasant spring weather, with average highs around 79°F and lows near 54°F — a 25°F daily swing. Over 55 years of records, the warmest May 20th was in 2001 (83°F average), while the coldest was 1994 (56°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 2% of May 20th dates historically. The last decade has been 3.9°F cooler on this date compared to 20-30 years ago.
The last decade has been 3.9°F cooler on this date compared to 20-30 years ago.
Planning for May 20th in Antioch, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 78° | 55° | 67° | — | — |
| 2024 | 76° | 53° | 64° | — | — |
| 2023 | 65° | 57° | 61° | — | — |
| 2022 | 76° | 52° | 64° | — | — |
| 2021 | 70° | 50° | 60° | — | — |
| 2020 | 75° | 52° | 63° | — | — |
| 2019 | 68° | 47° | 57° | — | — |
| 2018 | 73° | 54° | 63° | — | — |
| 2017 | 86° | 70° | 78° | — | — |
| 2016 | 68° | 53° | 61° | — | — |
| 2015 | 73° | 52° | 62° | — | — |
| 2014 | 75° | 52° | 63° | — | — |
| 2013 | 90° | 63° | 76° | — | — |
| 2012 | 83° | 61° | 72° | — | — |
| 2011 | 82° | 55° | 69° | — | — |
| 2010 | 74° | 51° | 62° | — | — |
| 2009 | 85° | 52° | 68° | — | — |
| 2008 | 81° | 54° | 67° | — | — |
| 2007 | 81° | 59° | 70° | — | — |
| 2006 | 74° | 53° | 63° | — | — |
| 2005 | 75° | 56° | 65° | — | — |
| 2004 | 74° | 51° | 62° | — | — |
| 2003 | 82° | 63° | 72° | — | — |
| 2002 | 63° | 49° | 56° | — | — |
| 2001warmest | 95° | 71° | 83° | — | — |
| 2000 | 94° | 57° | 75° | — | — |
| 1999 | 77° | 50° | 64° | — | — |
| 1998 | 72° | 47° | 59° | — | — |
| 1997 | 92° | 57° | 74° | — | — |
| 1996 | 73° | 61° | 67° | — | — |
| 1995 | 83° | 50° | 66° | — | — |
| 1994coldest | 65° | 48° | 56° | — | — |
| 1993 | 81° | 58° | 69° | — | — |
| 1992 | 77° | 56° | 66° | — | — |
| 1991 | 71° | 42° | 57° | — | — |
| 1990 | 67° | 52° | 59° | — | — |
| 1989 | 80° | 51° | 66° | — | — |
| 1988 | 91° | 58° | 74° | — | — |
| 1987 | 73° | 54° | 63° | 0.15" | — |
| 1986 | 85° | 55° | 70° | — | — |
| 1985 | — | 51° | — | — | — |
| 1984 | 92° | 64° | 78° | — | — |
| 1983 | 90° | 59° | 74° | — | — |
| 1982 | 88° | 45° | 66° | — | — |
| 1981 | 68° | 47° | 57° | — | — |
| 1980 | 93° | 58° | 75° | — | — |
| 1979 | 84° | 53° | 69° | — | — |
| 1978 | 94° | 59° | 76° | — | — |
| 1977 | 77° | 50° | 64° | — | — |
| 1976 | 80° | 49° | 64° | — | — |
| 1975 | 80° | 49° | 64° | — | — |
| 1974 | 71° | 46° | 59° | — | — |
| 1973 | 84° | 52° | 68° | — | — |
| 1972 | 68° | 52° | 60° | — | — |
| 1971 | 77° | 47° | 62° | — | — |
55 years of data from ANTIOCH FIBREBRD MILLS