Weather on December 31
San Diego, CA
55 Years of Data
Avg High
64°F
Avg Low
49°F
Warmest
1997
66°F avg
Coldest
2012
49°F avg
About This Date
December 31st in San Diego, CA typically brings mild winter weather, with average highs around 64°F and lows near 49°F. Over 55 years of records, the warmest December 31st was in 1997 (66°F average), while the coldest was 2012 (49°F) — a 17°F range across recorded history. Rain or other precipitation has occurred on about 20% of December 31st dates historically, with the wettest December 31st recording 1.83" 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 31st in San Diego, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 73° | 59° | 66° | 0.97" | — |
| 2024 | 61° | 53° | 57° | — | — |
| 2023 | 61° | 53° | 57° | 0.05" | — |
| 2022 | 61° | 58° | 59° | 0.08" | — |
| 2021 | 64° | 54° | 59° | — | — |
| 2020 | 64° | 44° | 54° | — | — |
| 2019 | 74° | 48° | 61° | — | — |
| 2018 | 61° | 48° | 54° | 0.61" | — |
| 2017 | 64° | 50° | 57° | — | — |
| 2016 | 60° | 52° | 56° | 1.73" | — |
| 2015 | 65° | 45° | 55° | — | — |
| 2014 | 55° | 43° | 49° | 0.05" | — |
| 2013 | 70° | 47° | 58° | — | — |
| 2012coldest | 58° | 41° | 49° | — | — |
| 2011 | 67° | 48° | 57° | — | — |
| 2010 | 59° | 44° | 52° | — | — |
| 2009 | 66° | 52° | 59° | — | — |
| 2008 | 61° | 45° | 53° | — | — |
| 2007 | 66° | 45° | 55° | — | — |
| 2006 | 60° | 45° | 52° | — | — |
| 2005 | 61° | 53° | 57° | 0.43" | — |
| 2004 | 60° | 51° | 56° | 0.69" | — |
| 2003 | 64° | 43° | 53° | — | — |
| 2002 | 61° | 49° | 55° | — | — |
| 2001 | 63° | 56° | 59° | — | — |
| 2000 | 68° | 44° | 56° | — | — |
| 1999 | 59° | 52° | 55° | 0.74" | — |
| 1998 | 57° | 49° | 53° | — | — |
| 1997warmest | 77° | 56° | 66° | — | — |
| 1996 | 66° | 58° | 62° | — | — |
| 1995 | 61° | 52° | 56° | — | — |
| 1994 | 62° | 47° | 54° | — | — |
| 1993 | 70° | 45° | 57° | — | — |
| 1992 | 61° | 45° | 53° | — | — |
| 1991 | 66° | 44° | 55° | — | — |
| 1990 | 66° | 39° | 53° | — | — |
| 1989 | 71° | 45° | 58° | — | — |
| 1988 | 57° | 42° | 50° | — | — |
| 1987 | 61° | 43° | 52° | — | — |
| 1986 | 67° | 48° | 57° | — | — |
| 1985 | 64° | 54° | 59° | — | — |
| 1984 | 62° | 47° | 54° | — | — |
| 1983 | 70° | 55° | 62° | — | — |
| 1982 | 62° | 41° | 52° | — | — |
| 1981 | 62° | 57° | 60° | 0.33" | — |
| 1980 | 71° | 51° | 61° | — | — |
| 1979 | 70° | 52° | 61° | — | — |
| 1978 | 64° | 47° | 55° | — | — |
| 1977 | 65° | 59° | 62° | — | — |
| 1976 | 64° | 57° | 61° | 1.83" | — |
| 1975 | 60° | 49° | 54° | — | — |
| 1974 | 63° | 47° | 55° | — | — |
| 1973 | 62° | 49° | 55° | — | — |
| 1972 | 63° | 42° | 52° | — | — |
| 1971 | 70° | 41° | 55° | — | — |
55 years of data from SAN DIEGO INTL AP