Weather on October 18
San Ramon, CA
55 Years of Data
Avg High
74°F
Avg Low
53°F
Warmest
1974
82°F avg
Coldest
1984
48°F avg
About This Date
October 18th in San Ramon, CA typically brings pleasant fall weather, with average highs around 74°F and lows near 53°F. Over 53 years of records, the warmest October 18th was in 1974 (82°F average), while the coldest was 1984 (48°F) — a 34°F range across recorded history. Rain or other precipitation has occurred on about 13% of October 18th dates historically, with the wettest October 18th recording 2.29" of rain. The last decade has been 1.4°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.4°F cooler on this date compared to 20-30 years ago.
Planning for October 18th in San Ramon, CA? Great weather for outdoor activities.
Cooling Trend
0.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 72° | 55° | 63° | — | — |
| 2024 | 60° | 51° | 56° | — | — |
| 2023 | 77° | 63° | 70° | — | — |
| 2022 | 70° | 50° | 60° | — | — |
| 2021 | 65° | 41° | 53° | 0.15" | — |
| 2020 | 89° | 70° | 79° | — | — |
| 2019 | 69° | 48° | 59° | — | — |
| 2018 | 74° | 57° | 65° | — | — |
| 2017 | 77° | 58° | 67° | — | — |
| 2016 | 61° | 48° | 54° | — | — |
| 2015 | 62° | 49° | 55° | — | — |
| 2014 | 67° | 53° | 60° | — | — |
| 2013 | 76° | 59° | 67° | — | — |
| 2012 | 82° | 65° | 73° | — | — |
| 2011 | 83° | 62° | 72° | — | — |
| 2010 | 55° | 46° | 51° | 0.18" | — |
| 2009 | 77° | 57° | 67° | — | — |
| 2008 | 82° | 62° | 72° | — | — |
| 2007 | 59° | 40° | 49° | 0.05" | — |
| 2006 | 79° | 53° | 66° | — | — |
| 2005 | 76° | 57° | 66° | — | — |
| 2004 | 64° | 50° | 57° | — | — |
| 2003 | 84° | 57° | 71° | — | — |
| 2002 | 71° | 51° | 61° | — | — |
| 2001 | 85° | 50° | 67° | — | — |
| 2000 | 79° | 52° | 65° | — | — |
| 1999 | 83° | 53° | 68° | — | — |
| 1998 | 78° | 47° | 62° | — | — |
| 1997 | 85° | 52° | 68° | — | — |
| 1996 | 64° | 47° | 55° | — | — |
| 1995 | 85° | 53° | 69° | — | — |
| 1994 | 77° | 49° | 63° | — | — |
| 1993 | 73° | 41° | 57° | — | — |
| 1992 | 70° | 53° | 61° | — | — |
| 1991 | 90° | 53° | 71° | — | — |
| 1990 | 65° | 56° | 60° | — | — |
| 1989 | 80° | 59° | 70° | — | — |
| 1988 | 91° | 62° | 77° | — | — |
| 1986 | 60° | 44° | 52° | 0.08" | — |
| 1985 | 77° | 44° | 61° | — | — |
| 1984coldest | 58° | 39° | 48° | 0.03" | — |
| 1983 | 74° | 53° | 63° | — | — |
| 1982 | 71° | 49° | 60° | — | — |
| 1981 | 73° | 51° | 62° | — | — |
| 1979 | 75° | 50° | 63° | 2.29" | — |
| 1978 | 80° | 58° | 69° | — | — |
| 1977 | 74° | 48° | 61° | — | — |
| 1976 | 83° | 58° | 70° | — | — |
| 1975 | 75° | 51° | 63° | — | — |
| 1974warmest | 91° | 74° | 82° | — | — |
| 1973 | 87° | 56° | 71° | — | — |
| 1972 | 64° | 57° | 61° | 0.13" | — |
| 1971 | 67° | 41° | 54° | — | — |
53 years of data from LIVERMORE CALIFORNIA