Weather on December 9
Antioch, CA
55 Years of Data
Avg High
56°F
Avg Low
40°F
Warmest
2010
61°F avg
Coldest
1972
34°F avg
About This Date
December 9th in Antioch, CA typically brings cool winter weather, with average highs around 56°F and lows near 40°F. Over 55 years of records, the warmest December 9th was in 2010 (61°F average), while the coldest was 1972 (34°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 20% of December 9th dates historically, with the wettest December 9th recording 1.27" 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 December 9th in Antioch, CA? Bring layers as temperatures can vary throughout the day.
Warming Trend
1.0°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 55° | 44° | 50° | — | — |
| 2024 | 55° | 44° | 50° | — | — |
| 2023 | 52° | 42° | 47° | — | — |
| 2022 | 49° | 43° | 46° | — | — |
| 2021 | 49° | 42° | 45° | — | — |
| 2020 | 64° | 40° | 52° | — | — |
| 2019 | 60° | 46° | 53° | 0.03" | — |
| 2018 | 50° | 43° | 46° | 0.03" | — |
| 2017 | 57° | 53° | 55° | — | — |
| 2016 | 61° | 48° | 54° | — | — |
| 2015 | 65° | 51° | 58° | — | — |
| 2014 | 56° | 52° | 54° | 0.03" | — |
| 2013 | 45° | 32° | 38° | — | — |
| 2012 | 61° | 41° | 51° | — | — |
| 2011 | 62° | 36° | 49° | — | — |
| 2010warmest | 69° | 53° | 61° | — | — |
| 2009 | 46° | 29° | 37° | — | — |
| 2008 | 46° | 29° | 37° | — | — |
| 2007 | 56° | 37° | 46° | — | — |
| 2006 | 67° | 41° | 54° | — | — |
| 2005 | 63° | 36° | 49° | — | — |
| 2004 | 63° | 49° | 56° | — | — |
| 2003 | 54° | 42° | 48° | 1.19" | — |
| 2002 | 55° | 43° | 49° | 0.71" | — |
| 2001 | 54° | 41° | 47° | — | — |
| 2000 | 52° | 45° | 48° | — | — |
| 1999 | 53° | 41° | 47° | 0.13" | — |
| 1998 | 53° | 40° | 46° | — | — |
| 1997 | 58° | 39° | 48° | — | — |
| 1996 | 64° | 47° | 55° | 0.33" | — |
| 1995 | 61° | 46° | 53° | — | — |
| 1994 | 51° | 31° | 41° | — | — |
| 1993 | 64° | 50° | 57° | 1.02" | — |
| 1992 | 56° | 44° | 50° | 1.27" | — |
| 1991 | 61° | 35° | 48° | — | — |
| 1990 | 61° | 34° | 47° | — | — |
| 1989 | 57° | 42° | 50° | — | — |
| 1988 | 68° | — | — | — | — |
| 1987 | 53° | 47° | 50° | — | — |
| 1986 | 55° | 36° | 45° | — | — |
| 1985 | 57° | 42° | 50° | — | — |
| 1984 | 54° | 42° | 48° | — | — |
| 1983 | 58° | 41° | 49° | 0.74" | — |
| 1982 | 59° | 38° | 48° | — | — |
| 1981 | 46° | 43° | 44° | — | — |
| 1980 | 55° | 27° | 41° | — | — |
| 1979 | 66° | 41° | 54° | — | — |
| 1978 | 47° | 27° | 37° | — | — |
| 1977 | 56° | 34° | 45° | — | — |
| 1976 | 61° | 36° | 48° | — | — |
| 1975 | 56° | 37° | 46° | — | — |
| 1974 | 51° | 32° | 42° | — | — |
| 1973 | 58° | 42° | 50° | — | — |
| 1972coldest | 43° | 25° | 34° | — | — |
| 1971 | 56° | 33° | 44° | 0.03" | — |
55 years of data from ANTIOCH FIBREBRD MILLS