Weather on October 18
San Diego, CA
55 Years of Data
Avg High
73°F
Avg Low
61°F
Warmest
1973
73°F avg
Coldest
1971
59°F avg
About This Date
October 18th in San Diego, CA typically brings pleasant fall weather, with average highs around 73°F and lows near 61°F. Over 55 years of records, the warmest October 18th was in 1973 (73°F average), while the coldest was 1971 (59°F) — a 14°F range across recorded history. Rain or other precipitation has occurred on about 11% of October 18th dates historically. The last decade has been 2.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.4°F warmer on this date compared to 20-30 years ago.
Planning for October 18th in San Diego, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 83° | 54° | 68° | — | — |
| 2024 | 72° | 59° | 65° | — | — |
| 2023 | 72° | 63° | 67° | — | — |
| 2022 | 81° | 61° | 71° | — | — |
| 2021 | 69° | 55° | 62° | — | — |
| 2020 | 80° | 65° | 72° | — | — |
| 2019 | 74° | 61° | 67° | — | — |
| 2018 | 82° | 60° | 71° | — | — |
| 2017 | 74° | 67° | 70° | — | — |
| 2016 | 74° | 63° | 68° | — | — |
| 2015 | 76° | 71° | 73° | 0.05" | — |
| 2014 | 74° | 67° | 70° | — | — |
| 2013 | 77° | 59° | 68° | — | — |
| 2012 | 74° | 69° | 71° | — | — |
| 2011 | 68° | 60° | 64° | — | — |
| 2010 | 69° | 63° | 66° | 0.1" | — |
| 2009 | 68° | 60° | 64° | — | — |
| 2008 | 75° | 60° | 68° | — | — |
| 2007 | 70° | 57° | 63° | — | — |
| 2006 | 73° | 57° | 65° | — | — |
| 2005 | 68° | 60° | 64° | 0.03" | — |
| 2004 | 70° | 67° | 68° | 0.33" | — |
| 2003 | 75° | 64° | 70° | — | — |
| 2002 | 66° | 62° | 64° | — | — |
| 2001 | 71° | 56° | 63° | — | — |
| 2000 | 68° | 63° | 65° | — | — |
| 1999 | 80° | 55° | 68° | — | — |
| 1998 | 76° | 54° | 65° | — | — |
| 1997 | 74° | 57° | 65° | — | — |
| 1996 | 69° | 60° | 65° | — | — |
| 1995 | 70° | 62° | 66° | — | — |
| 1994 | 73° | 54° | 63° | — | — |
| 1993 | 69° | 57° | 63° | — | — |
| 1992 | 71° | 62° | 67° | — | — |
| 1991 | 75° | 61° | 68° | — | — |
| 1990 | 73° | 62° | 68° | — | — |
| 1989 | 84° | 56° | 70° | — | — |
| 1988 | 72° | 65° | 68° | — | — |
| 1987 | 66° | 63° | 64° | 0.03" | — |
| 1986 | 69° | 59° | 64° | — | — |
| 1985 | 71° | 62° | 67° | — | — |
| 1984 | 71° | 58° | 64° | — | — |
| 1983 | 76° | 65° | 70° | — | — |
| 1982 | 74° | 64° | 69° | — | — |
| 1981 | 88° | 58° | 73° | — | — |
| 1980 | 75° | 55° | 65° | — | — |
| 1979 | 72° | 68° | 70° | — | — |
| 1978 | 74° | 62° | 68° | — | — |
| 1977 | 71° | 65° | 68° | — | — |
| 1976 | 76° | 69° | 72° | — | — |
| 1975 | 69° | 62° | 66° | — | — |
| 1974 | 74° | 58° | 66° | — | — |
| 1973warmest | 86° | 61° | 73° | — | — |
| 1972 | 64° | 60° | 62° | 0.46" | — |
| 1971coldest | 67° | 52° | 59° | — | — |
55 years of data from SAN DIEGO INTL AP