Weather on October 20
San Bernardino, CA
55 Years of Data
Avg High
80°F
Avg Low
54°F
Warmest
2003
82°F avg
Coldest
1972
55°F avg
About This Date
October 20th in San Bernardino, CA typically brings warm fall weather, with average highs around 80°F and lows near 54°F — a 26°F daily swing. Over 48 years of records, the warmest October 20th was in 2003 (82°F average), while the coldest was 1972 (55°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 13% of October 20th dates historically, with the wettest October 20th recording 6.99" of rain.
Planning for October 20th in San Bernardino, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 88° | 50° | 69° | — | — |
| 2017 | 64° | 56° | 60° | — | — |
| 2016 | 86° | 70° | 78° | — | — |
| 2015 | 77° | 54° | 65° | — | — |
| 2014 | 79° | 56° | 67° | — | — |
| 2013 | 82° | 54° | 68° | — | — |
| 2012 | 76° | 60° | 68° | — | — |
| 2011 | 80° | 53° | 67° | — | — |
| 2010 | 66° | 56° | 61° | 0.33" | — |
| 2009 | 79° | 53° | 66° | — | — |
| 2008 | 79° | 49° | 64° | — | — |
| 2007 | 84° | 53° | 69° | — | — |
| 2006 | 92° | 50° | 71° | — | — |
| 2005 | 80° | 49° | 64° | — | — |
| 2004 | 60° | 57° | 59° | 6.99" | — |
| 2003warmest | 103° | 62° | 82° | — | — |
| 2002 | 78° | 49° | 63° | — | — |
| 2001 | 85° | 53° | 69° | — | — |
| 2000 | 89° | 46° | 68° | — | — |
| 1999 | 94° | 54° | 74° | — | — |
| 1998 | 86° | 50° | 68° | — | — |
| 1997 | 79° | 58° | 68° | — | — |
| 1996 | 73° | 46° | 60° | — | — |
| 1995 | 88° | 53° | 70° | — | — |
| 1994 | 78° | 47° | 62° | — | — |
| 1993 | 88° | 58° | 73° | — | — |
| 1992 | 82° | 52° | 67° | — | — |
| 1991 | 94° | 57° | 75° | — | — |
| 1990 | 78° | 52° | 65° | — | — |
| 1989 | 73° | 59° | 66° | — | — |
| 1988 | 77° | 60° | 69° | — | — |
| 1987 | 74° | 51° | 62° | — | — |
| 1986 | 78° | 46° | 62° | — | — |
| 1985 | 80° | 53° | 67° | — | — |
| 1984 | 72° | 57° | 64° | — | — |
| 1983 | 83° | 53° | 68° | — | — |
| 1982 | 84° | 53° | 69° | — | — |
| 1981 | 89° | 54° | 71° | — | — |
| 1980 | 89° | 50° | 70° | — | — |
| 1979 | 66° | 59° | 63° | 5.87" | — |
| 1978 | 80° | 60° | 70° | 0.48" | — |
| 1977 | 65° | 54° | 59° | 0.08" | — |
| 1976 | 80° | 59° | 70° | — | — |
| 1975 | 78° | 55° | 67° | — | — |
| 1974 | 75° | 51° | 63° | — | — |
| 1973 | 84° | 53° | 69° | — | — |
| 1972coldest | 59° | 50° | 55° | 0.38" | — |
| 1971 | 85° | 43° | 64° | — | — |
48 years of data from NORTON AFB