Weather on December 17
Antioch, CA
55 Years of Data
Avg High
54°F
Avg Low
37°F
Warmest
2025
55°F avg
Coldest
1985
35°F avg
About This Date
December 17th in Antioch, CA typically brings cool winter weather, with average highs around 54°F and lows near 37°F. Over 55 years of records, the warmest December 17th was in 2025 (55°F average), while the coldest was 1985 (35°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 20% of December 17th dates historically, with the wettest December 17th recording 1.78" of rain. The last decade has been 1.9°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.9°F warmer on this date compared to 20-30 years ago.
Planning for December 17th in Antioch, CA? Bring layers as temperatures can vary throughout the day.
Warming Trend
1.2°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025warmest | 63° | 48° | 55° | — | — |
| 2024 | 56° | 44° | 50° | — | — |
| 2023 | 59° | 45° | 52° | — | — |
| 2022 | 47° | 39° | 43° | — | — |
| 2021 | 47° | 38° | 42° | — | — |
| 2020 | 58° | 49° | 53° | 0.53" | — |
| 2019 | 52° | 38° | 45° | — | — |
| 2018 | 54° | 46° | 50° | — | — |
| 2017 | 53° | 43° | 48° | — | — |
| 2016 | 50° | 36° | 43° | — | — |
| 2015 | 56° | 36° | 46° | 0.03" | — |
| 2014 | 61° | 47° | 54° | 0.53" | — |
| 2013 | 62° | 40° | 51° | — | — |
| 2012 | 58° | 46° | 52° | — | — |
| 2011 | 63° | 34° | 48° | — | — |
| 2010 | 54° | 45° | 49° | — | — |
| 2009 | 56° | 40° | 48° | — | — |
| 2008 | 52° | 30° | 41° | — | — |
| 2007 | 53° | 44° | 49° | — | — |
| 2006 | 48° | 32° | 40° | — | — |
| 2005 | 48° | 35° | 42° | 1.78" | — |
| 2004 | 60° | 33° | 47° | — | — |
| 2003 | 52° | 36° | 44° | — | — |
| 2002 | 56° | 39° | 47° | — | — |
| 2001 | 53° | 36° | 44° | — | — |
| 2000 | 57° | 42° | 50° | — | — |
| 1999 | 60° | 35° | 48° | — | — |
| 1998 | 62° | 36° | 49° | — | — |
| 1997 | 46° | 42° | 44° | — | — |
| 1996 | 59° | 35° | 47° | — | — |
| 1995 | 58° | 39° | 48° | — | — |
| 1994 | 44° | 38° | 41° | — | — |
| 1993 | 41° | 34° | 37° | — | — |
| 1992 | 50° | 30° | 40° | 0.3" | — |
| 1991 | 40° | 34° | 37° | 0.05" | — |
| 1990 | 53° | 34° | 43° | — | — |
| 1989 | 58° | 31° | 44° | — | — |
| 1988 | 54° | 41° | 47° | — | — |
| 1987 | 47° | 40° | 43° | 1.63" | — |
| 1986 | 64° | 37° | 51° | — | — |
| 1985coldest | 39° | 30° | 35° | — | — |
| 1984 | 53° | 27° | 40° | — | — |
| 1983 | 57° | 47° | 52° | 0.03" | — |
| 1982 | 63° | 34° | 48° | — | — |
| 1981 | 57° | 43° | 50° | — | — |
| 1980 | 61° | 34° | 47° | — | — |
| 1979 | 54° | 27° | 40° | — | — |
| 1978 | 48° | 27° | 37° | 0.15" | — |
| 1977 | 57° | 33° | 45° | 1.52" | — |
| 1976 | 60° | 29° | 44° | — | — |
| 1975 | 59° | 26° | 43° | — | — |
| 1974 | 52° | 39° | 45° | — | — |
| 1973 | 57° | 44° | 51° | — | — |
| 1972 | 45° | 33° | 39° | 1.45" | — |
| 1971 | 53° | 29° | 41° | — | — |
55 years of data from ANTIOCH FIBREBRD MILLS