Weather on August 15
San Bernardino, CA
55 Years of Data
Avg High
94°F
Avg Low
65°F
Warmest
2015
91°F avg
Coldest
2017
68°F avg
About This Date
August 15th in San Bernardino, CA typically brings hot summer weather, with average highs around 94°F and lows near 65°F — a 29°F daily swing. Over 48 years of records, the warmest August 15th was in 2015 (91°F average), while the coldest was 2017 (68°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 2% of August 15th dates historically.
Planning for August 15th in San Bernardino, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 90° | 62° | 76° | — | — |
| 2017coldest | 76° | 60° | 68° | — | — |
| 2016 | 101° | 72° | 86° | — | — |
| 2015warmest | 104° | 77° | 91° | — | — |
| 2014 | 96° | 64° | 80° | — | — |
| 2013 | 98° | 64° | 81° | — | — |
| 2012 | 98° | 68° | 83° | — | — |
| 2011 | 98° | 63° | 80° | — | — |
| 2010 | 99° | 56° | 77° | — | — |
| 2009 | 89° | 60° | 75° | — | — |
| 2008 | 94° | 66° | 80° | — | — |
| 2007 | 103° | 68° | 85° | — | — |
| 2006 | 86° | 58° | 72° | — | — |
| 2005 | 82° | 61° | 71° | — | — |
| 2004 | 96° | 67° | 81° | — | — |
| 2003 | 98° | 69° | 84° | — | — |
| 2002 | 94° | 64° | 79° | — | — |
| 2001 | 106° | 67° | 86° | — | — |
| 2000 | 101° | 57° | 79° | — | — |
| 1999 | 93° | 57° | 75° | — | — |
| 1998 | 97° | 68° | 82° | — | — |
| 1997 | 88° | 69° | 78° | — | — |
| 1996 | 99° | 72° | 85° | — | — |
| 1995 | 95° | 62° | 79° | — | — |
| 1994 | 104° | 73° | 89° | — | — |
| 1993 | 82° | 62° | 72° | — | — |
| 1992 | 100° | 72° | 86° | — | — |
| 1991 | 87° | 85° | 86° | — | — |
| 1990 | 80° | 74° | 77° | — | — |
| 1989 | 96° | 62° | 79° | — | — |
| 1988 | 90° | 56° | 73° | — | — |
| 1987 | 80° | 61° | 70° | — | — |
| 1986 | 93° | 61° | 77° | — | — |
| 1985 | 93° | 58° | 75° | — | — |
| 1984 | 97° | 70° | 83° | 0.23" | — |
| 1983 | 102° | 74° | 88° | — | — |
| 1982 | 95° | 58° | 76° | — | — |
| 1981 | 99° | 70° | 84° | — | — |
| 1980 | 85° | 66° | 75° | — | — |
| 1979 | 93° | 59° | 76° | — | — |
| 1978 | 95° | 58° | 76° | — | — |
| 1977 | 105° | 66° | 86° | — | — |
| 1976 | 76° | 62° | 69° | — | — |
| 1975 | 88° | 57° | 72° | — | — |
| 1974 | 93° | 57° | 75° | — | — |
| 1973 | 100° | 65° | 82° | — | — |
| 1972 | 86° | 60° | 73° | — | — |
| 1971 | 100° | 65° | 82° | — | — |
48 years of data from NORTON AFB