Weather on September 9
San Bernardino, CA
55 Years of Data
Avg High
92°F
Avg Low
64°F
Warmest
1990
100°F avg
Coldest
2005
65°F avg
About This Date
September 9th in San Bernardino, CA typically brings hot fall weather, with average highs around 92°F and lows near 64°F — a 28°F daily swing. Over 48 years of records, the warmest September 9th was in 1990 (100°F average), while the coldest was 2005 (65°F) — a 35°F range across recorded history. Rain or other precipitation has occurred on about 6% of September 9th dates historically.
Planning for September 9th in San Bernardino, CA? Stay hydrated and seek shade during peak afternoon hours.
Cooling Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 90° | 62° | 76° | — | — |
| 2017 | 88° | 64° | 76° | — | — |
| 2016 | 89° | 60° | 75° | — | — |
| 2015 | 98° | 77° | 88° | — | — |
| 2014 | 90° | 70° | 80° | — | — |
| 2013 | 91° | 71° | 81° | — | — |
| 2012 | 102° | 70° | 86° | — | — |
| 2011 | 94° | 62° | 78° | — | — |
| 2010 | 77° | 56° | 66° | — | — |
| 2009 | 95° | 57° | 76° | — | — |
| 2008 | 94° | 60° | 77° | — | — |
| 2007 | 89° | 58° | 73° | — | — |
| 2006 | 91° | 58° | 74° | — | — |
| 2005coldest | 77° | 54° | 65° | — | — |
| 2004 | 98° | 69° | 84° | 0.23" | — |
| 2003 | 86° | 58° | 72° | — | — |
| 2002 | 98° | 53° | 76° | — | — |
| 2001 | 84° | 51° | 68° | — | — |
| 2000 | 92° | 54° | 73° | — | — |
| 1999 | 92° | 64° | 78° | — | — |
| 1998 | 87° | 64° | 76° | — | — |
| 1997 | 102° | 69° | 86° | — | — |
| 1996 | 97° | 66° | 81° | — | — |
| 1995 | 90° | 65° | 77° | — | — |
| 1994 | 98° | 64° | 81° | — | — |
| 1993 | 107° | 65° | 86° | — | — |
| 1992 | 86° | 59° | 73° | — | — |
| 1991 | 77° | 58° | 67° | — | — |
| 1990warmest | 102° | 98° | 100° | — | — |
| 1989 | 85° | 55° | 70° | — | — |
| 1988 | 93° | 65° | 79° | — | — |
| 1987 | 95° | 63° | 79° | — | — |
| 1986 | 84° | 61° | 72° | — | — |
| 1985 | 78° | 62° | 70° | — | — |
| 1984 | 101° | 76° | 88° | 0.03" | — |
| 1983 | 100° | 69° | 85° | — | — |
| 1982 | 93° | 67° | 80° | — | — |
| 1981 | 97° | 65° | 81° | — | — |
| 1980 | 84° | 54° | 69° | — | — |
| 1979 | 114° | 69° | 92° | — | — |
| 1978 | 85° | 55° | 70° | — | — |
| 1977 | 100° | 63° | 81° | — | — |
| 1976 | 91° | 71° | 81° | 0.05" | — |
| 1975 | 81° | 63° | 72° | — | — |
| 1974 | 100° | 63° | 81° | — | — |
| 1973 | 85° | 60° | 72° | — | — |
| 1972 | 80° | 65° | 72° | — | — |
| 1971 | 105° | 68° | 87° | — | — |
48 years of data from NORTON AFB