Weather on December 20
Antioch, CA
55 Years of Data
Avg High
53°F
Avg Low
39°F
Warmest
2025
57°F avg
Coldest
1985
34°F avg
About This Date
December 20th in Antioch, CA typically brings cool winter weather, with average highs around 53°F and lows near 39°F. Over 55 years of records, the warmest December 20th was in 2025 (57°F average), while the coldest was 1985 (34°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 27% of December 20th dates historically, with the wettest December 20th recording 2.79" 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 20th in Antioch, CA? Bring layers as temperatures can vary throughout the day.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025warmest | 59° | 55° | 57° | — | — |
| 2024 | 53° | 40° | 46° | — | — |
| 2023 | 54° | 49° | 51° | — | — |
| 2022 | 48° | 36° | 42° | — | — |
| 2021 | 38° | 36° | 37° | — | — |
| 2020 | 55° | 34° | 44° | 0.03" | — |
| 2019 | 53° | 43° | 48° | 0.03" | — |
| 2018 | 52° | 48° | 50° | 0.03" | — |
| 2017 | 47° | 38° | 42° | — | — |
| 2016 | 56° | 33° | 44° | — | — |
| 2015 | 54° | 47° | 50° | 0.66" | — |
| 2014 | 58° | 52° | 55° | 0.1" | — |
| 2013 | 60° | 42° | 51° | — | — |
| 2012 | 54° | 32° | 43° | — | — |
| 2011 | 56° | 33° | 44° | — | — |
| 2010 | 57° | 45° | 51° | — | — |
| 2009 | 51° | 36° | 43° | — | — |
| 2008 | 51° | 39° | 45° | — | — |
| 2007 | 57° | 48° | 53° | 0.25" | — |
| 2006 | 49° | 34° | 41° | — | — |
| 2005 | 60° | 49° | 54° | 0.51" | — |
| 2004 | 46° | 36° | 41° | — | — |
| 2003 | 51° | 46° | 49° | 0.13" | — |
| 2002 | 50° | 42° | 46° | 2.79" | — |
| 2001 | 49° | 43° | 46° | — | — |
| 2000 | 56° | 45° | 50° | — | — |
| 1999 | 67° | 36° | 51° | — | — |
| 1998 | 47° | 36° | 41° | — | — |
| 1997 | 56° | 33° | 44° | — | — |
| 1996 | 51° | 38° | 44° | — | — |
| 1995 | 59° | 37° | 48° | — | — |
| 1994 | 49° | 43° | 46° | — | — |
| 1993 | 47° | 34° | 40° | — | — |
| 1992 | 47° | 34° | 40° | — | — |
| 1991 | 55° | 36° | 45° | — | — |
| 1990 | 55° | 33° | 44° | — | — |
| 1989 | 40° | 32° | 36° | — | — |
| 1988 | 49° | 43° | 46° | 0.53" | — |
| 1987 | 58° | 29° | 43° | — | — |
| 1986 | 56° | 40° | 48° | 0.08" | — |
| 1985coldest | 38° | 30° | 34° | — | — |
| 1984 | 52° | 31° | 41° | — | — |
| 1983 | 54° | 40° | 47° | — | — |
| 1982 | 45° | 36° | 40° | 0.36" | — |
| 1981 | 67° | 45° | 56° | — | — |
| 1980 | 56° | 38° | 47° | — | — |
| 1979 | 47° | 41° | 44° | 0.84" | — |
| 1978 | 51° | 28° | 40° | — | — |
| 1977 | 52° | 35° | 43° | — | — |
| 1976 | 63° | 30° | 46° | — | — |
| 1975 | 58° | 28° | 43° | — | — |
| 1974 | 59° | 39° | 49° | — | — |
| 1973 | 47° | 38° | 42° | 0.03" | — |
| 1972 | 59° | 49° | 54° | 0.03" | — |
| 1971 | 56° | 32° | 44° | — | — |
55 years of data from ANTIOCH FIBREBRD MILLS