Weather on December 21
Chula Vista, CA
55 Years of Data
Avg High
66°F
Avg Low
46°F
Warmest
2005
68°F avg
Coldest
1978
48°F avg
About This Date
December 21st in Chula Vista, CA typically brings mild winter weather, with average highs around 66°F and lows near 46°F. Over 55 years of records, the warmest December 21st was in 2005 (68°F average), while the coldest was 1978 (48°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 18% of December 21st dates historically, with the wettest December 21st recording 5.05" of rain. The last decade has been 3.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.4°F warmer on this date compared to 20-30 years ago.
Planning for December 21st in Chula Vista, CA? Great weather for outdoor activities.
Warming Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 69° | 53° | 61° | — | — |
| 2024 | 64° | 42° | 53° | — | — |
| 2023 | 75° | 55° | 65° | — | — |
| 2022 | 70° | 42° | 56° | — | — |
| 2021 | 66° | 50° | 58° | — | — |
| 2020 | 78° | 50° | 64° | — | — |
| 2019 | 69° | 47° | 58° | — | — |
| 2018 | 65° | 49° | 57° | — | — |
| 2017 | 63° | 43° | 53° | 0.08" | — |
| 2016 | 75° | 59° | 67° | — | — |
| 2015 | 65° | 46° | 55° | — | — |
| 2014 | 68° | 53° | 61° | — | — |
| 2013 | 64° | 44° | 54° | — | — |
| 2012 | 63° | 36° | 49° | — | — |
| 2011 | 64° | 41° | 53° | — | — |
| 2010 | 59° | 54° | 56° | 5.05" | — |
| 2009 | 64° | 50° | 57° | — | — |
| 2008 | 63° | 41° | 52° | — | — |
| 2007 | 64° | 45° | 54° | — | — |
| 2006 | 63° | 41° | 52° | — | — |
| 2005warmest | 84° | 52° | 68° | — | — |
| 2004 | 64° | 47° | 55° | — | — |
| 2003 | 67° | 46° | 56° | — | — |
| 2002 | 59° | 46° | 53° | 0.25" | — |
| 2001 | 60° | 49° | 54° | 0.46" | — |
| 2000 | 63° | 40° | 51° | — | — |
| 1999 | 77° | 46° | 62° | — | — |
| 1998 | 59° | 42° | 51° | — | — |
| 1997 | 65° | 47° | 56° | 1.91" | — |
| 1996 | 63° | 42° | 52° | — | — |
| 1995 | 65° | 43° | 54° | — | — |
| 1994 | 67° | 43° | 55° | — | — |
| 1993 | 69° | 48° | 59° | — | — |
| 1992 | 65° | 39° | 52° | — | — |
| 1991 | 70° | 41° | 55° | — | — |
| 1990 | 54° | 44° | 49° | 0.33" | — |
| 1989 | 61° | 44° | 52° | — | — |
| 1988 | 62° | 54° | 58° | 0.25" | — |
| 1987 | 65° | 42° | 53° | — | — |
| 1986 | 68° | 42° | 55° | — | — |
| 1985 | 78° | 47° | 62° | — | — |
| 1984 | 60° | 39° | 50° | — | — |
| 1983 | 64° | 51° | 58° | — | — |
| 1982 | 65° | 39° | 52° | — | — |
| 1981 | 65° | 54° | 59° | 0.25" | — |
| 1980 | 66° | 43° | 54° | — | — |
| 1979 | 64° | 47° | 55° | — | — |
| 1978coldest | 59° | 37° | 48° | — | — |
| 1977 | 68° | 61° | 64° | — | — |
| 1976 | 68° | 45° | 56° | — | — |
| 1975 | 58° | 43° | 50° | 0.15" | — |
| 1974 | 68° | 41° | 55° | — | — |
| 1973 | 74° | 44° | 59° | — | — |
| 1972 | 68° | 50° | 59° | — | — |
| 1971 | 60° | 42° | 51° | 0.13" | — |
55 years of data from CHULA VISTA