Weather on December 9
San Diego, CA
55 Years of Data
Avg High
67°F
Avg Low
50°F
Warmest
1973
65°F avg
Coldest
1978
48°F avg
About This Date
December 9th in San Diego, CA typically brings mild winter weather, with average highs around 67°F and lows near 50°F. Over 55 years of records, the warmest December 9th was in 1973 (65°F average), while the coldest was 1978 (48°F) — a 17°F range across recorded history. Rain or other precipitation has occurred on about 15% of December 9th dates historically, with the wettest December 9th recording 1.07" 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 9th in San Diego, CA? Great weather for outdoor activities.
Warming Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 80° | 47° | 63° | — | — |
| 2024 | 64° | 50° | 57° | — | — |
| 2023 | 75° | 46° | 61° | — | — |
| 2022 | 62° | 43° | 52° | — | — |
| 2021 | 63° | 55° | 59° | 0.28" | — |
| 2020 | 73° | 50° | 62° | — | — |
| 2019 | 66° | 54° | 60° | 0.05" | — |
| 2018 | 71° | 52° | 61° | — | — |
| 2017 | 78° | 51° | 65° | — | — |
| 2016 | 66° | 51° | 59° | — | — |
| 2015 | 72° | 54° | 63° | — | — |
| 2014 | 75° | 55° | 65° | — | — |
| 2013 | 60° | 44° | 52° | — | — |
| 2012 | 63° | 54° | 58° | — | — |
| 2011 | 67° | 44° | 55° | — | — |
| 2010 | 66° | 47° | 56° | — | — |
| 2009 | 57° | 48° | 53° | — | — |
| 2008 | 75° | 51° | 63° | — | — |
| 2007 | 57° | 46° | 52° | 0.18" | — |
| 2006 | 66° | 51° | 59° | 0.08" | — |
| 2005 | 74° | 55° | 64° | — | — |
| 2004 | 64° | 51° | 58° | — | — |
| 2003 | 72° | 49° | 60° | — | — |
| 2002 | 66° | 52° | 59° | — | — |
| 2001 | 63° | 48° | 55° | — | — |
| 2000 | 64° | 58° | 61° | — | — |
| 1999 | 63° | 47° | 55° | — | — |
| 1998 | 69° | 42° | 56° | — | — |
| 1997 | 62° | 49° | 55° | — | — |
| 1996 | 62° | 52° | 57° | 0.46" | — |
| 1995 | 67° | 54° | 60° | — | — |
| 1994 | 63° | 40° | 51° | — | — |
| 1993 | 64° | 46° | 55° | — | — |
| 1992 | 65° | 47° | 56° | — | — |
| 1991 | 72° | 55° | 63° | 0.03" | — |
| 1990 | 76° | 47° | 61° | — | — |
| 1989 | 73° | 48° | 61° | — | — |
| 1988 | 76° | 55° | 65° | — | — |
| 1987 | 66° | 54° | 60° | — | — |
| 1986 | 64° | 47° | 55° | — | — |
| 1985 | 60° | 46° | 53° | — | — |
| 1984 | 68° | 53° | 61° | — | — |
| 1983 | 67° | 53° | 60° | 0.79" | — |
| 1982 | 66° | 57° | 62° | 1.07" | — |
| 1981 | 71° | 52° | 61° | — | — |
| 1980 | 68° | 47° | 57° | — | — |
| 1979 | 68° | 49° | 58° | — | — |
| 1978coldest | 58° | 38° | 48° | — | — |
| 1977 | 66° | 60° | 63° | — | — |
| 1976 | 66° | 50° | 58° | — | — |
| 1975 | 67° | 50° | 58° | — | — |
| 1974 | 70° | 50° | 60° | — | — |
| 1973warmest | 81° | 50° | 65° | — | — |
| 1972 | 55° | 47° | 51° | — | — |
| 1971 | 59° | 41° | 50° | — | — |
55 years of data from SAN DIEGO INTL AP