Weather on December 9
Chula Vista, CA
55 Years of Data
Avg High
68°F
Avg Low
47°F
Warmest
2025
68°F avg
Coldest
1978
42°F avg
About This Date
December 9th in Chula Vista, CA typically brings mild winter weather, with average highs around 68°F and lows near 47°F. Over 55 years of records, the warmest December 9th was in 2025 (68°F average), while the coldest was 1978 (42°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 13% of December 9th dates historically, with the wettest December 9th recording 1.17" of rain. The last decade has been 1.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.7°F warmer on this date compared to 20-30 years ago.
Planning for December 9th in Chula Vista, CA? Great weather for outdoor activities.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025warmest | 84° | 52° | 68° | — | — |
| 2024 | 62° | 46° | 54° | — | — |
| 2023 | 77° | 46° | 62° | — | — |
| 2022 | 61° | 42° | 51° | — | — |
| 2021 | 63° | 55° | 59° | 0.33" | — |
| 2020 | 73° | 50° | 62° | — | — |
| 2019 | 65° | 51° | 58° | 0.13" | — |
| 2018 | 69° | 48° | 59° | — | — |
| 2017 | 79° | 49° | 64° | — | — |
| 2016 | 67° | 49° | 58° | — | — |
| 2015 | 72° | 49° | 60° | — | — |
| 2014 | 74° | 53° | 63° | — | — |
| 2013 | 66° | 36° | 51° | — | — |
| 2012 | 68° | 52° | 60° | — | — |
| 2011 | 70° | 39° | 54° | — | — |
| 2010 | 64° | 44° | 54° | — | — |
| 2009 | 59° | 44° | 52° | — | — |
| 2008 | 75° | 49° | 62° | — | — |
| 2007 | 58° | 44° | 51° | — | — |
| 2006 | 68° | 43° | 55° | 0.3" | — |
| 2005 | 76° | 50° | 63° | — | — |
| 2004 | 66° | 54° | 60° | — | — |
| 2003 | 73° | 45° | 59° | — | — |
| 2002 | 70° | 47° | 58° | — | — |
| 2001 | 72° | 44° | 58° | — | — |
| 2000 | 65° | 53° | 59° | — | — |
| 1999 | 65° | 42° | 53° | — | — |
| 1998 | 70° | 39° | 54° | — | — |
| 1997 | 66° | 46° | 56° | — | — |
| 1996 | 64° | 52° | 58° | 0.25" | — |
| 1995 | 66° | 50° | 58° | — | — |
| 1994 | 67° | 38° | 52° | — | — |
| 1993 | 68° | 44° | 56° | — | — |
| 1992 | 66° | 48° | 57° | — | — |
| 1991 | 74° | 53° | 63° | 0.76" | — |
| 1990 | 78° | 47° | 62° | — | — |
| 1989 | 75° | 47° | 61° | — | — |
| 1988 | 76° | 57° | 66° | — | — |
| 1987 | 69° | 48° | 59° | — | — |
| 1986 | 67° | 44° | 55° | — | — |
| 1985 | 61° | 46° | 53° | — | — |
| 1984 | — | 47° | — | — | — |
| 1983 | 68° | 45° | 56° | — | — |
| 1982 | 65° | 52° | 58° | 0.84" | — |
| 1981 | 73° | 48° | 61° | — | — |
| 1980 | 62° | 42° | 52° | — | — |
| 1979 | 67° | 45° | 56° | — | — |
| 1978coldest | 52° | 33° | 42° | — | — |
| 1977 | 65° | 52° | 58° | — | — |
| 1976 | 66° | 44° | 55° | — | — |
| 1975 | 74° | 49° | 61° | — | — |
| 1974 | 70° | 46° | 58° | — | — |
| 1973 | 70° | 48° | 59° | — | — |
| 1972 | 56° | 45° | 50° | 1.17" | — |
| 1971 | 54° | 37° | 45° | — | — |
55 years of data from CHULA VISTA