Weather on October 18
San Francisco, CA
55 Years of Data
About This Date
October 18th in San Francisco, CA typically brings mild fall weather, with average highs around 69°F and lows near 54°F. Over 55 years of records, the warmest October 18th was in 2012 (73°F average), while the coldest was 1971 (54°F) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 7% 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 Francisco, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 77° | 57° | 67° | — | — |
| 2024 | 73° | 59° | 66° | — | — |
| 2023 | 84° | — | — | — | — |
| 2022 | 79° | 58° | 68° | — | — |
| 2021 | 58° | 51° | 54° | — | — |
| 2020 | 76° | 58° | 67° | — | — |
| 2019 | 64° | 54° | 59° | — | — |
| 2018 | 65° | 53° | 59° | — | — |
| 2017 | 60° | 49° | 54° | — | — |
| 2016 | 66° | 54° | 60° | — | — |
| 2015 | 66° | 60° | 63° | — | — |
| 2014 | 76° | 63° | 69° | — | — |
| 2013 | 62° | 49° | 55° | — | — |
| 2012warmest | 85° | 61° | 73° | — | — |
| 2011 | 67° | 56° | 61° | — | — |
| 2010 | 60° | 51° | 56° | — | — |
| 2009 | 61° | 56° | 58° | — | — |
| 2008 | 64° | 52° | 58° | — | — |
| 2007 | 69° | 54° | 61° | — | — |
| 2006 | 76° | 54° | 65° | — | — |
| 2005 | 65° | 59° | 62° | — | — |
| 2004 | 64° | 52° | 58° | — | — |
| 2003 | 68° | 53° | 61° | — | — |
| 2002 | 63° | 53° | 58° | — | — |
| 2001 | 72° | 52° | 62° | — | — |
| 2000 | 66° | 53° | 60° | — | — |
| 1999 | 65° | 50° | 57° | — | — |
| 1998 | 69° | 50° | 60° | — | — |
| 1997 | 61° | 51° | 56° | — | — |
| 1996 | 63° | 53° | 58° | 0.18" | — |
| 1995 | 81° | 55° | 68° | — | — |
| 1994 | 68° | 50° | 59° | — | — |
| 1993 | 68° | 52° | 60° | — | — |
| 1992 | 68° | 56° | 62° | — | — |
| 1991 | 83° | 56° | 69° | — | — |
| 1990 | 68° | 54° | 61° | 0.08" | — |
| 1989 | 85° | 57° | 71° | — | — |
| 1988 | 79° | 57° | 68° | — | — |
| 1987 | 73° | 53° | 63° | — | — |
| 1986 | 68° | 53° | 61° | — | — |
| 1985 | 64° | 54° | 59° | — | — |
| 1984 | 65° | 50° | 57° | 0.03" | — |
| 1983 | 70° | 53° | 61° | — | — |
| 1982 | 75° | 53° | 64° | — | — |
| 1981 | 72° | 53° | 62° | — | — |
| 1980 | 65° | 50° | 57° | — | — |
| 1979 | 64° | 57° | 61° | 0.23" | — |
| 1978 | 59° | 54° | 56° | — | — |
| 1977 | 60° | 53° | 57° | — | — |
| 1976 | 65° | 54° | 59° | — | — |
| 1975 | 67° | 55° | 61° | — | — |
| 1974 | 80° | 57° | 69° | — | — |
| 1973 | 59° | 52° | 55° | — | — |
| 1972 | 68° | 56° | 62° | — | — |
| 1971coldest | 60° | 49° | 54° | — | — |
San Francisco, CA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
San Francisco, CA Monthly Precipitation
Average rainfall per month, in inches.
San Francisco, CA Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit San Francisco, CA
Most pleasant months in San Francisco, CA: July, August.