Weather on September 22
San Bernardino, CA
55 Years of Data
Avg High
89°F
Avg Low
59°F
Warmest
1975
84°F avg
Coldest
2017
60°F avg
About This Date
September 22nd in San Bernardino, CA typically brings warm fall weather, with average highs around 89°F and lows near 59°F — a 30°F daily swing. Over 48 years of records, the warmest September 22nd was in 1975 (84°F average), while the coldest was 2017 (60°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 4% of September 22nd dates historically.
Planning for September 22nd in San Bernardino, CA? Stay hydrated and seek shade during peak afternoon hours.
Cooling Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 93° | 67° | 80° | — | — |
| 2017coldest | 69° | 50° | 60° | — | — |
| 2016 | 73° | 55° | 64° | — | — |
| 2015 | 84° | 66° | 75° | — | — |
| 2014 | 91° | 59° | 75° | — | — |
| 2013 | 77° | 56° | 66° | — | — |
| 2012 | 98° | 69° | 84° | — | — |
| 2011 | 103° | 59° | 81° | — | — |
| 2010 | 72° | 58° | 65° | — | — |
| 2009 | 106° | 60° | 83° | — | — |
| 2008 | 85° | 54° | 69° | — | — |
| 2007 | 72° | 55° | 63° | 0.13" | — |
| 2006 | 86° | 57° | 72° | — | — |
| 2005 | 93° | 55° | 74° | — | — |
| 2004 | 94° | 53° | 73° | — | — |
| 2003 | 106° | 63° | 84° | — | — |
| 2002 | 106° | 63° | 84° | — | — |
| 2001 | 96° | 57° | 77° | — | — |
| 2000 | 83° | 61° | 72° | — | — |
| 1999 | 91° | 72° | 81° | — | — |
| 1998 | 77° | 61° | 69° | — | — |
| 1997 | 97° | 60° | 78° | — | — |
| 1996 | 83° | 59° | 71° | — | — |
| 1995 | 92° | 59° | 75° | — | — |
| 1994 | 89° | 62° | 76° | — | — |
| 1993 | 78° | 54° | 66° | — | — |
| 1992 | 98° | 68° | 83° | — | — |
| 1991 | 96° | 65° | 80° | 0.18" | — |
| 1990 | 82° | 57° | 70° | — | — |
| 1989 | 93° | 60° | 77° | — | — |
| 1988 | 80° | 49° | 64° | — | — |
| 1987 | 91° | 62° | 77° | — | — |
| 1986 | 75° | 49° | 62° | — | — |
| 1985 | 95° | 56° | 75° | — | — |
| 1984 | 83° | 68° | 75° | — | — |
| 1983 | 88° | 70° | 79° | — | — |
| 1982 | 106° | 60° | 83° | — | — |
| 1981 | 93° | 59° | 76° | — | — |
| 1980 | 85° | 55° | 70° | — | — |
| 1979 | 98° | 61° | 79° | — | — |
| 1978 | 100° | 51° | 76° | — | — |
| 1977 | 85° | 52° | 68° | — | — |
| 1976 | 82° | 58° | 70° | — | — |
| 1975warmest | 104° | 64° | 84° | — | — |
| 1974 | 100° | 65° | 82° | — | — |
| 1973 | 80° | 60° | 70° | — | — |
| 1972 | 94° | 58° | 76° | — | — |
| 1971 | 92° | 59° | 75° | — | — |
48 years of data from NORTON AFB