Weather on December 20
San Diego, CA
55 Years of Data
Avg High
66°F
Avg Low
48°F
Warmest
1977
64°F avg
Coldest
1992
48°F avg
About This Date
December 20th in San Diego, CA typically brings mild winter weather, with average highs around 66°F and lows near 48°F. Over 55 years of records, the warmest December 20th was in 1977 (64°F average), while the coldest was 1992 (48°F) — a 16°F range across recorded history. Rain or other precipitation has occurred on about 18% of December 20th dates historically, with the wettest December 20th recording 1.09" of rain. The last decade has been 2.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.1°F warmer on this date compared to 20-30 years ago.
Planning for December 20th in San Diego, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 64° | 56° | 60° | — | — |
| 2024 | 65° | 46° | 55° | — | — |
| 2023 | 68° | 59° | 64° | 0.03" | — |
| 2022 | 66° | 40° | 53° | — | — |
| 2021 | 63° | 39° | 51° | — | — |
| 2020 | 76° | 43° | 59° | — | — |
| 2019 | 75° | 44° | 60° | — | — |
| 2018 | 71° | 55° | 63° | — | — |
| 2017 | 63° | 47° | 55° | 0.18" | — |
| 2016 | 77° | 48° | 63° | — | — |
| 2015 | 63° | 53° | 58° | — | — |
| 2014 | 66° | 52° | 59° | — | — |
| 2013 | 61° | 48° | 54° | — | — |
| 2012 | 66° | 42° | 54° | — | — |
| 2011 | 65° | 52° | 58° | — | — |
| 2010 | 63° | 58° | 60° | 0.79" | — |
| 2009 | 71° | 51° | 61° | — | — |
| 2008 | 60° | 44° | 52° | — | — |
| 2007 | 61° | 54° | 57° | 0.1" | — |
| 2006 | 59° | 43° | 51° | — | — |
| 2005 | 70° | 49° | 59° | — | — |
| 2004 | 65° | 50° | 57° | — | — |
| 2003 | 66° | 50° | 58° | — | — |
| 2002 | 59° | 51° | 55° | 1.09" | — |
| 2001 | 60° | 46° | 53° | — | — |
| 2000 | 67° | 46° | 56° | — | — |
| 1999 | 74° | 49° | 61° | — | — |
| 1998 | 57° | 51° | 54° | — | — |
| 1997 | 66° | 46° | 56° | — | — |
| 1996 | 63° | 43° | 53° | — | — |
| 1995 | 61° | 49° | 55° | 0.15" | — |
| 1994 | 74° | 43° | 58° | — | — |
| 1993 | 68° | 48° | 58° | — | — |
| 1992coldest | 59° | 38° | 48° | — | — |
| 1991 | 67° | 44° | 55° | — | — |
| 1990 | 55° | 48° | 52° | 0.64" | — |
| 1989 | 66° | 47° | 56° | — | — |
| 1988 | 62° | 49° | 55° | — | — |
| 1987 | 64° | 45° | 54° | — | — |
| 1986 | 59° | 48° | 54° | 0.64" | — |
| 1985 | 78° | 48° | 63° | — | — |
| 1984 | 60° | 53° | 57° | 0.25" | — |
| 1983 | 65° | 58° | 61° | — | — |
| 1982 | 67° | 47° | 57° | — | — |
| 1981 | 67° | 58° | 62° | — | — |
| 1980 | 73° | 49° | 61° | — | — |
| 1979 | 67° | 52° | 59° | — | — |
| 1978 | 63° | 43° | 53° | — | — |
| 1977warmest | 76° | 53° | 64° | — | — |
| 1976 | 70° | 54° | 62° | — | — |
| 1975 | 58° | 48° | 53° | 0.15" | — |
| 1974 | 70° | 45° | 57° | — | — |
| 1973 | 74° | 47° | 60° | — | — |
| 1972 | 70° | 52° | 61° | — | — |
| 1971 | 63° | 44° | 53° | — | — |
55 years of data from SAN DIEGO INTL AP