Weather on December 21
Tracy, CA
55 Years of Data
Avg High
54°F
Avg Low
37°F
Warmest
2014
61°F avg
Coldest
1985
35°F avg
About This Date
December 21st in Tracy, 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 21st was in 2014 (61°F average), while the coldest was 1985 (35°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 38% of December 21st dates historically, with the wettest December 21st recording 2.97" 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 21st in Tracy, CA? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 60° | 49° | 54° | 0.76" | — |
| 2024 | 53° | 47° | 50° | 0.13" | — |
| 2023 | 56° | 45° | 50° | 1.3" | — |
| 2022 | 52° | 32° | 42° | — | — |
| 2021 | 46° | 38° | 42° | — | — |
| 2020 | 58° | 28° | 43° | — | — |
| 2019 | 54° | 42° | 48° | 0.03" | — |
| 2018 | 55° | 49° | 52° | 0.05" | — |
| 2017 | 56° | 34° | 45° | — | — |
| 2016 | 57° | 28° | 43° | — | — |
| 2015 | 58° | 45° | 51° | 0.33" | — |
| 2014warmest | 66° | 56° | 61° | — | — |
| 2013 | 61° | 33° | 47° | — | — |
| 2012 | 51° | 30° | 41° | — | — |
| 2011 | 52° | 26° | 39° | — | — |
| 2010 | 60° | 38° | 49° | 0.03" | — |
| 2009 | 61° | 44° | 52° | 0.28" | — |
| 2008 | 49° | 38° | 43° | 0.2" | — |
| 2007 | 56° | 38° | 47° | 0.05" | — |
| 2006 | 44° | 37° | 41° | 0.43" | — |
| 2005 | 62° | 49° | 55° | — | — |
| 2004 | 58° | 37° | 47° | — | — |
| 2003 | 55° | 49° | 52° | 0.28" | — |
| 2002 | 56° | 45° | 50° | 0.25" | — |
| 2001 | 53° | 32° | 43° | 0.81" | — |
| 2000 | 60° | 29° | 44° | — | — |
| 1999 | 66° | 29° | 47° | — | — |
| 1998 | 54° | 26° | 40° | — | — |
| 1997 | 50° | 34° | 42° | 0.08" | — |
| 1996 | 45° | 41° | 43° | 2.97" | — |
| 1995 | 46° | 36° | 41° | — | — |
| 1994 | 50° | 43° | 46° | — | — |
| 1993 | 38° | 33° | 35° | — | — |
| 1992 | 54° | 29° | 41° | — | — |
| 1991 | 55° | 30° | 43° | — | — |
| 1990 | — | 20° | — | — | — |
| 1989 | 41° | 34° | 37° | — | — |
| 1988 | 52° | 39° | 45° | 0.13" | — |
| 1987 | 56° | 26° | 41° | — | — |
| 1986 | 46° | 34° | 40° | — | — |
| 1985coldest | 40° | 30° | 35° | — | — |
| 1984 | 50° | 36° | 43° | — | — |
| 1983 | 51° | 38° | 44° | — | — |
| 1982 | 61° | 45° | 53° | 0.51" | — |
| 1981 | 65° | 49° | 57° | 0.1" | — |
| 1980 | 57° | 39° | 48° | — | — |
| 1979 | 49° | 41° | 45° | 0.33" | — |
| 1978 | 51° | 31° | 41° | — | — |
| 1977 | 56° | 34° | 45° | — | — |
| 1976 | 60° | 30° | 45° | — | — |
| 1975 | 61° | 33° | 47° | — | — |
| 1974 | 47° | 42° | 44° | — | — |
| 1973 | 48° | 42° | 45° | 0.58" | — |
| 1972 | 56° | 51° | 53° | — | — |
| 1971 | 42° | 30° | 36° | — | — |
55 years of data from TRACY CARBONA