Weather on September 28
San Bernardino, CA
55 Years of Data
About This Date
September 28th in San Bernardino, CA typically brings warm fall weather, with average highs around 88°F and lows near 60°F — a 28°F daily swing. Over 48 years of records, the warmest September 28th was in 1978 (85°F average), while the coldest was 1986 (62°F) — a 23°F range across recorded history. This date has historically been dry, with little recorded precipitation.
Planning for September 28th in San Bernardino, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 81° | 63° | 72° | — | — |
| 2017 | 91° | 70° | 80° | — | — |
| 2016 | 89° | 68° | 79° | — | — |
| 2015 | 89° | 66° | 78° | — | — |
| 2014 | 76° | 59° | 67° | — | — |
| 2013 | 86° | 52° | 69° | — | — |
| 2012 | 95° | 58° | 76° | — | — |
| 2011 | 93° | 60° | 77° | — | — |
| 2010 | 98° | 71° | 85° | — | — |
| 2009 | 93° | 58° | 75° | — | — |
| 2008 | 95° | 61° | 78° | — | — |
| 2007 | 68° | 56° | 62° | — | — |
| 2006 | 102° | 57° | 80° | — | — |
| 2005 | 99° | 56° | 77° | — | — |
| 2004 | 82° | 51° | 67° | — | — |
| 2003 | 91° | 58° | 74° | — | — |
| 2002 | 81° | 57° | 69° | — | — |
| 2001 | 98° | 62° | 80° | — | — |
| 2000 | 86° | 61° | 73° | — | — |
| 1999 | 100° | 56° | 78° | — | — |
| 1998 | 78° | 52° | 65° | — | — |
| 1997 | 99° | 68° | 83° | — | — |
| 1996 | 94° | 64° | 79° | — | — |
| 1995 | 82° | 58° | 70° | — | — |
| 1994 | 94° | 67° | 80° | — | — |
| 1993 | 101° | 62° | 81° | — | — |
| 1992 | 102° | 64° | 83° | — | — |
| 1991 | 91° | 61° | 76° | — | — |
| 1990 | 77° | 62° | 70° | — | — |
| 1989 | 91° | 63° | 77° | — | — |
| 1988 | 88° | 52° | 70° | — | — |
| 1987 | 59° | 97° | 78° | — | — |
| 1986coldest | 70° | 55° | 62° | — | — |
| 1985 | 75° | 62° | 69° | — | — |
| 1984 | 100° | 63° | 81° | — | — |
| 1983 | 76° | 62° | 69° | — | — |
| 1982 | 75° | 52° | 63° | — | — |
| 1981 | 90° | 57° | 73° | — | — |
| 1980 | 96° | 56° | 76° | — | — |
| 1979 | 91° | 64° | 78° | — | — |
| 1978warmest | 105° | 65° | 85° | — | — |
| 1977 | 87° | 54° | 70° | — | — |
| 1976 | 84° | 56° | 70° | — | — |
| 1975 | 89° | 55° | 72° | — | — |
| 1974 | 88° | 53° | 70° | — | — |
| 1973 | 98° | 55° | 77° | — | — |
| 1972 | 85° | 59° | 72° | — | — |
| 1971 | 82° | 46° | 64° | — | — |
San Bernardino, CA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
San Bernardino, CA Monthly Precipitation
Average rainfall and snowfall per month, in inches.
San Bernardino, CA Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit San Bernardino, CA
San Bernardino, CA has no months that meet our "pleasant" threshold — every season has tradeoffs.