Weather on May 9
Antioch, CA
55 Years of Data
Avg High
77°F
Avg Low
52°F
Warmest
2025
78°F avg
Coldest
2022
46°F avg
About This Date
May 9th in Antioch, CA typically brings pleasant spring weather, with average highs around 77°F and lows near 52°F — a 25°F daily swing. Over 54 years of records, the warmest May 9th was in 2025 (78°F average), while the coldest was 2022 (46°F) — a 32°F range across recorded history. Rain or other precipitation has occurred on about 4% of May 9th dates historically. The last decade has been 3.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.8°F warmer on this date compared to 20-30 years ago.
Planning for May 9th in Antioch, CA? Great weather for outdoor activities.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025warmest | 87° | 68° | 78° | — | — |
| 2024 | 78° | 55° | 67° | — | — |
| 2023 | 60° | 45° | 52° | — | — |
| 2022coldest | 52° | 40° | 46° | — | — |
| 2021 | 87° | 65° | 76° | — | — |
| 2020 | 91° | 56° | 73° | — | — |
| 2019 | 73° | 53° | 63° | — | — |
| 2018 | 78° | 59° | 69° | — | — |
| 2017 | 88° | 54° | 71° | — | — |
| 2016 | 76° | 52° | 64° | — | — |
| 2015 | 77° | 51° | 64° | — | — |
| 2014 | 74° | 56° | 65° | — | — |
| 2013 | 78° | 54° | 66° | — | — |
| 2012 | 79° | 62° | 70° | — | — |
| 2011 | 62° | 43° | 52° | — | — |
| 2010 | 72° | 49° | 60° | — | — |
| 2009 | 83° | 58° | 70° | — | — |
| 2008 | 80° | 48° | 64° | — | — |
| 2007 | 91° | 50° | 71° | — | — |
| 2006 | 82° | 60° | 71° | — | — |
| 2005 | 72° | 50° | 61° | 0.08" | — |
| 2004 | 78° | 53° | 66° | — | — |
| 2003 | 59° | 39° | 49° | — | — |
| 2002 | 76° | 51° | 63° | — | — |
| 2001 | 84° | 67° | 75° | — | — |
| 2000 | 71° | 52° | 61° | — | — |
| 1999 | 73° | 49° | 61° | — | — |
| 1998 | 68° | 47° | 57° | — | — |
| 1997 | 86° | 50° | 68° | — | — |
| 1996 | 76° | 44° | 60° | — | — |
| 1995 | 71° | 49° | 60° | — | — |
| 1994 | 76° | 51° | 63° | — | — |
| 1993 | 78° | 51° | 65° | — | — |
| 1992 | 88° | 53° | 70° | — | — |
| 1991 | 82° | 48° | 65° | — | — |
| 1990 | 85° | 53° | 69° | — | — |
| 1989 | 84° | 56° | 70° | — | — |
| 1988 | 69° | 52° | 60° | — | — |
| 1987 | 89° | 61° | 75° | — | — |
| 1985 | 74° | 41° | 57° | — | — |
| 1984 | 92° | 55° | 73° | — | — |
| 1983 | 67° | 46° | 56° | — | — |
| 1982 | 74° | 48° | 61° | — | — |
| 1981 | 87° | 61° | 74° | — | — |
| 1980 | 70° | 50° | 60° | — | — |
| 1979 | 68° | 43° | 55° | — | — |
| 1978 | 88° | 50° | 69° | — | — |
| 1977 | 68° | 45° | 56° | 0.3" | — |
| 1976 | 81° | 49° | 65° | — | — |
| 1975 | 72° | 47° | 59° | — | — |
| 1974 | 81° | 60° | 70° | — | — |
| 1973 | 80° | 45° | 62° | — | — |
| 1972 | 68° | 52° | 60° | — | — |
| 1971 | 63° | 51° | 57° | — | — |
54 years of data from ANTIOCH FIBREBRD MILLS