Weather on October 4
San Bernardino, CA
55 Years of Data
Avg High
85°F
Avg Low
56°F
Warmest
1987
83°F avg
Coldest
2015
58°F avg
About This Date
October 4th in San Bernardino, CA typically brings warm fall weather, with average highs around 85°F and lows near 56°F — a 29°F daily swing. Over 48 years of records, the warmest October 4th was in 1987 (83°F average), while the coldest was 2015 (58°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 2% of October 4th dates historically.
Planning for October 4th in San Bernardino, CA? Stay hydrated and seek shade during peak afternoon hours.
Cooling Trend
1.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 81° | 55° | 68° | — | — |
| 2017 | 83° | 56° | 69° | — | — |
| 2016 | 75° | 53° | 64° | — | — |
| 2015coldest | 63° | 54° | 58° | — | — |
| 2014 | 91° | 63° | 77° | — | — |
| 2013 | 84° | 52° | 68° | — | — |
| 2012 | 86° | 57° | 72° | — | — |
| 2011 | 69° | 56° | 62° | — | — |
| 2010 | 72° | 56° | 64° | — | — |
| 2009 | 78° | 55° | 67° | — | — |
| 2008 | 65° | 57° | 61° | — | — |
| 2007 | 86° | 52° | 69° | — | — |
| 2006 | 85° | 53° | 69° | — | — |
| 2005 | 89° | 49° | 69° | — | — |
| 2004 | 85° | 55° | 70° | — | — |
| 2003 | 80° | 52° | 66° | — | — |
| 2002 | 84° | 48° | 66° | — | — |
| 2001 | 93° | 60° | 77° | — | — |
| 2000 | 89° | 57° | 73° | — | — |
| 1999 | 91° | 54° | 72° | — | — |
| 1998 | 78° | 52° | 65° | — | — |
| 1997 | 84° | 65° | 74° | — | — |
| 1996 | 100° | 60° | 80° | — | — |
| 1995 | 93° | 57° | 75° | — | — |
| 1994 | 70° | 59° | 64° | 0.15" | — |
| 1993 | 81° | 61° | 71° | — | — |
| 1992 | 85° | 53° | 69° | — | — |
| 1991 | 90° | 59° | 74° | — | — |
| 1990 | 94° | 59° | 76° | — | — |
| 1989 | 86° | 48° | 67° | — | — |
| 1988 | 87° | 57° | 72° | — | — |
| 1987warmest | 102° | 65° | 83° | — | — |
| 1986 | 83° | 54° | 68° | — | — |
| 1985 | 83° | 62° | 72° | — | — |
| 1984 | 78° | 56° | 67° | — | — |
| 1983 | 89° | 56° | 72° | — | — |
| 1982 | 82° | 55° | 69° | — | — |
| 1981 | 76° | 59° | 67° | — | — |
| 1980 | 98° | 59° | 79° | — | — |
| 1979 | 96° | 63° | 79° | — | — |
| 1978 | 94° | 58° | 76° | — | — |
| 1977 | 95° | 57° | 76° | — | — |
| 1976 | 87° | 54° | 70° | — | — |
| 1975 | 101° | 60° | 80° | — | — |
| 1974 | 73° | 61° | 67° | — | — |
| 1973 | 94° | 48° | 71° | — | — |
| 1972 | 79° | 57° | 68° | — | — |
| 1971 | 91° | 55° | 73° | — | — |
48 years of data from NORTON AFB