Weather on December 18
Antioch, CA
55 Years of Data
Avg High
54°F
Avg Low
38°F
Warmest
2010
56°F avg
Coldest
1985
37°F avg
About This Date
December 18th in Antioch, CA typically brings cool winter weather, with average highs around 54°F and lows near 38°F. Over 55 years of records, the warmest December 18th was in 2010 (56°F average), while the coldest was 1985 (37°F) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 20% of December 18th dates historically, with the wettest December 18th recording 1.47" of rain. The last decade has been 1.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.5°F warmer on this date compared to 20-30 years ago.
Planning for December 18th in Antioch, CA? Bring layers as temperatures can vary throughout the day.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 58° | 48° | 53° | — | — |
| 2024 | 54° | 45° | 49° | — | — |
| 2023 | 56° | 43° | 49° | — | — |
| 2022 | 47° | 40° | 43° | — | — |
| 2021 | 39° | 35° | 37° | — | — |
| 2020 | 59° | 42° | 51° | — | — |
| 2019 | 57° | 43° | 50° | 0.15" | — |
| 2018 | 65° | 45° | 55° | — | — |
| 2017 | 51° | 44° | 48° | — | — |
| 2016 | 50° | 34° | 42° | — | — |
| 2015 | 56° | 40° | 48° | 0.1" | — |
| 2014 | 56° | 50° | 53° | 0.1" | — |
| 2013 | 63° | 42° | 52° | — | — |
| 2012 | 52° | 42° | 47° | — | — |
| 2011 | 58° | 36° | 47° | — | — |
| 2010warmest | 60° | 52° | 56° | — | — |
| 2009 | 57° | 41° | 49° | — | — |
| 2008 | 53° | 29° | 41° | — | — |
| 2007 | 52° | 42° | 47° | — | — |
| 2006 | 55° | 30° | 43° | — | — |
| 2005 | 57° | 48° | 53° | 1.47" | — |
| 2004 | 42° | 33° | 38° | — | — |
| 2003 | 56° | 40° | 48° | — | — |
| 2002 | 56° | 37° | 46° | — | — |
| 2001 | 57° | 40° | 48° | — | — |
| 2000 | 47° | 39° | 43° | — | — |
| 1999 | 61° | 35° | 48° | — | — |
| 1998 | 52° | 37° | 44° | — | — |
| 1997 | 49° | 42° | 45° | — | — |
| 1996 | 60° | 38° | 49° | — | — |
| 1995 | 50° | 42° | 46° | 0.03" | — |
| 1994 | 45° | 38° | 41° | — | — |
| 1993 | 47° | 33° | 40° | — | — |
| 1992 | 52° | 35° | 43° | 0.3" | — |
| 1991 | 54° | 37° | 45° | 0.05" | — |
| 1990 | 54° | 33° | 43° | — | — |
| 1989 | 50° | 32° | 41° | — | — |
| 1988 | 44° | 43° | 43° | — | — |
| 1987 | 56° | 35° | 45° | — | — |
| 1986 | 58° | 39° | 48° | 0.05" | — |
| 1985coldest | 44° | 30° | 37° | — | — |
| 1984 | 50° | 33° | 42° | — | — |
| 1983 | 59° | 39° | 49° | — | — |
| 1982 | 60° | 36° | 48° | — | — |
| 1981 | 49° | 43° | 46° | — | — |
| 1980 | 63° | 42° | 52° | — | — |
| 1979 | 51° | 28° | 40° | — | — |
| 1978 | 53° | 39° | 46° | 0.25" | — |
| 1977 | 56° | 38° | 47° | 0.3" | — |
| 1976 | 59° | 34° | 46° | — | — |
| 1975 | 59° | 27° | 43° | — | — |
| 1974 | 62° | 29° | 45° | — | — |
| 1973 | 61° | 44° | 52° | — | — |
| 1972 | 49° | 41° | 45° | 0.41" | — |
| 1971 | 53° | 30° | 42° | — | — |
55 years of data from ANTIOCH FIBREBRD MILLS