Weather on September 19
San Bernardino, CA
55 Years of Data
Avg High
89°F
Avg Low
60°F
Warmest
1984
89°F avg
Coldest
1989
59°F avg
About This Date
September 19th in San Bernardino, CA typically brings warm fall weather, with average highs around 89°F and lows near 60°F — a 29°F daily swing. Over 48 years of records, the warmest September 19th was in 1984 (89°F average), while the coldest was 1989 (59°F) — a 30°F range across recorded history. Rain or other precipitation has occurred on about 4% of September 19th dates historically, with the wettest September 19th recording 1.04" of rain.
Planning for September 19th in San Bernardino, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.0°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 88° | 69° | 79° | — | — |
| 2017 | 73° | 60° | 67° | — | — |
| 2016 | 96° | 72° | 84° | — | — |
| 2015 | 96° | 73° | 85° | — | — |
| 2014 | 83° | 67° | 75° | — | — |
| 2013 | 86° | 57° | 72° | — | — |
| 2012 | 99° | 60° | 79° | — | — |
| 2011 | 102° | 61° | 81° | — | — |
| 2010 | 93° | 54° | 73° | — | — |
| 2009 | 100° | 63° | 81° | — | — |
| 2008 | 90° | 62° | 76° | — | — |
| 2007 | 79° | 58° | 68° | 0.03" | — |
| 2006 | 93° | 56° | 74° | — | — |
| 2005 | 91° | 51° | 71° | — | — |
| 2004 | 77° | 60° | 69° | — | — |
| 2003 | 99° | 59° | 79° | — | — |
| 2002 | 98° | 57° | 78° | — | — |
| 2001 | 91° | 58° | 74° | — | — |
| 2000 | 97° | 62° | 79° | — | — |
| 1999 | 83° | 58° | 70° | — | — |
| 1998 | 87° | 55° | 71° | — | — |
| 1997 | 87° | 60° | 74° | — | — |
| 1996 | 91° | 64° | 78° | — | — |
| 1995 | 95° | 59° | 77° | — | — |
| 1994 | 88° | 59° | 73° | — | — |
| 1993 | 88° | 54° | 71° | — | — |
| 1992 | 95° | 58° | 76° | — | — |
| 1991 | 94° | 64° | 79° | — | — |
| 1990 | 72° | 62° | 67° | — | — |
| 1989coldest | 66° | 51° | 59° | 1.04" | — |
| 1988 | 80° | 54° | 67° | — | — |
| 1987 | 91° | 57° | 74° | — | — |
| 1986 | 74° | 53° | 63° | — | — |
| 1985 | 82° | 53° | 68° | — | — |
| 1984warmest | 109° | 68° | 89° | — | — |
| 1983 | 95° | 71° | 83° | — | — |
| 1982 | 87° | 60° | 74° | — | — |
| 1981 | 96° | 65° | 80° | — | — |
| 1980 | 87° | 60° | 74° | — | — |
| 1979 | 105° | 65° | 85° | — | — |
| 1978 | 81° | 59° | 70° | — | — |
| 1977 | 85° | 54° | 69° | — | — |
| 1976 | 74° | 61° | 67° | — | — |
| 1975 | 93° | 61° | 77° | — | — |
| 1974 | 90° | 58° | 74° | — | — |
| 1973 | 87° | 52° | 69° | — | — |
| 1972 | 78° | 55° | 67° | — | — |
| 1971 | 97° | 50° | 73° | — | — |
48 years of data from NORTON AFB