Weather on October 31
San Diego, CA
55 Years of Data
Avg High
72°F
Avg Low
57°F
Warmest
1980
73°F avg
Coldest
1971
56°F avg
About This Date
October 31st in San Diego, CA typically brings pleasant fall weather, with average highs around 72°F and lows near 57°F. Over 55 years of records, the warmest October 31st was in 1980 (73°F average), while the coldest was 1971 (56°F) — a 17°F range across recorded history. Rain or other precipitation has occurred on about 4% of October 31st dates historically, with the wettest October 31st recording 1.32" of rain. The last decade has been 1.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.2°F warmer on this date compared to 20-30 years ago.
Planning for October 31st in San Diego, CA? Great weather for outdoor activities.
Warming Trend
0.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 69° | 62° | 66° | — | — |
| 2024 | 71° | 51° | 61° | — | — |
| 2023 | 81° | 55° | 68° | — | — |
| 2022 | 77° | 55° | 66° | — | — |
| 2021 | 70° | 62° | 66° | — | — |
| 2020 | 77° | 56° | 66° | — | — |
| 2019 | 78° | 44° | 61° | — | — |
| 2018 | 75° | 60° | 68° | — | — |
| 2017 | 68° | 63° | 65° | — | — |
| 2016 | 71° | 63° | 67° | — | — |
| 2015 | 85° | 62° | 73° | — | — |
| 2014 | 72° | 67° | 69° | — | — |
| 2013 | 74° | 55° | 64° | — | — |
| 2012 | 68° | 59° | 64° | — | — |
| 2011 | 70° | 55° | 62° | — | — |
| 2010 | 68° | 56° | 62° | — | — |
| 2009 | 72° | 52° | 62° | — | — |
| 2008 | 84° | 63° | 73° | — | — |
| 2007 | 66° | 55° | 61° | — | — |
| 2006 | 67° | 60° | 63° | — | — |
| 2005 | 84° | 56° | 70° | — | — |
| 2004 | 68° | 55° | 62° | — | — |
| 2003 | 64° | 59° | 62° | — | — |
| 2002 | 66° | 60° | 63° | — | — |
| 2001 | 70° | 63° | 66° | — | — |
| 2000 | 67° | 56° | 61° | — | — |
| 1999 | 84° | 56° | 70° | — | — |
| 1998 | 68° | 56° | 62° | — | — |
| 1997 | 81° | 57° | 69° | — | — |
| 1996 | 63° | 51° | 57° | — | — |
| 1995 | 67° | 62° | 64° | — | — |
| 1994 | 75° | 53° | 64° | — | — |
| 1993 | 70° | 59° | 64° | — | — |
| 1992 | 72° | 61° | 66° | — | — |
| 1991 | 69° | 48° | 59° | — | — |
| 1990 | 73° | 60° | 67° | — | — |
| 1989 | 76° | 55° | 65° | — | — |
| 1988 | 72° | 57° | 64° | — | — |
| 1987 | 70° | 61° | 65° | 1.32" | — |
| 1986 | 69° | 60° | 65° | — | — |
| 1985 | 70° | 61° | 65° | — | — |
| 1984 | 70° | 62° | 66° | — | — |
| 1983 | 75° | 67° | 71° | — | — |
| 1982 | 73° | 63° | 68° | 0.05" | — |
| 1981 | 79° | 53° | 66° | — | — |
| 1980warmest | 88° | 58° | 73° | — | — |
| 1979 | 70° | 53° | 61° | — | — |
| 1978 | 70° | 62° | 66° | — | — |
| 1977 | 72° | 58° | 65° | — | — |
| 1976 | 76° | 56° | 66° | — | — |
| 1975 | 68° | 57° | 63° | — | — |
| 1974 | 68° | 54° | 61° | — | — |
| 1973 | 77° | 57° | 67° | — | — |
| 1972 | 67° | 47° | 57° | — | — |
| 1971coldest | 64° | 48° | 56° | — | — |
55 years of data from SAN DIEGO INTL AP