Weather on August 28
Fontana, CA
55 Years of Data
Avg High
97°F
Avg Low
65°F
Warmest
2015
90°F avg
Coldest
1973
70°F avg
About This Date
August 28th in Fontana, CA typically brings hot summer weather, with average highs around 97°F and lows near 65°F — a 32°F daily swing. Over 55 years of records, the warmest August 28th was in 2015 (90°F average), while the coldest was 1973 (70°F) — a 20°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 2.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.2°F warmer on this date compared to 20-30 years ago.
Planning for August 28th in Fontana, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 88° | 72° | 80° | — | — |
| 2024 | 91° | 62° | 77° | — | — |
| 2023 | 105° | 71° | 88° | — | — |
| 2022 | 88° | 66° | 77° | — | — |
| 2021 | 103° | 70° | 86° | — | — |
| 2020 | 99° | 69° | 84° | — | — |
| 2019 | 92° | 67° | 79° | — | — |
| 2018 | 88° | 62° | 75° | — | — |
| 2017 | 110° | 71° | 90° | — | — |
| 2016 | 95° | 62° | 79° | — | — |
| 2015warmest | 106° | 74° | 90° | — | — |
| 2014 | 100° | 69° | 85° | — | — |
| 2013 | 100° | 74° | 87° | — | — |
| 2012 | 103° | 69° | 86° | — | — |
| 2011 | 101° | 71° | 86° | — | — |
| 2010 | 80° | 59° | 70° | — | — |
| 2009 | 106° | 71° | 88° | — | — |
| 2008 | 91° | 65° | 78° | — | — |
| 2007 | 100° | 71° | 86° | — | — |
| 2006 | 101° | 66° | 83° | — | — |
| 2005 | 101° | 70° | 85° | — | — |
| 2004 | 91° | 61° | 76° | — | — |
| 2003 | 95° | 67° | 81° | — | — |
| 2002 | 88° | 59° | 73° | — | — |
| 2001 | 92° | 61° | 76° | — | — |
| 2000 | 83° | 64° | 73° | — | — |
| 1999 | 98° | 64° | 81° | — | — |
| 1998 | 102° | 67° | 84° | — | — |
| 1997 | 96° | 62° | 79° | — | — |
| 1996 | 107° | 62° | 85° | — | — |
| 1995 | 103° | 62° | 82° | — | — |
| 1994 | 98° | 66° | 82° | — | — |
| 1993 | 94° | 65° | 79° | — | — |
| 1992 | 100° | 64° | 82° | — | — |
| 1991 | 92° | 58° | 75° | — | — |
| 1990 | 101° | 61° | 81° | — | — |
| 1989 | 92° | 57° | 74° | — | — |
| 1988 | 98° | 68° | 83° | — | — |
| 1987 | 100° | 61° | 80° | — | — |
| 1986 | 98° | 62° | 80° | — | — |
| 1985 | 103° | 66° | 84° | — | — |
| 1984 | 104° | 66° | 85° | — | — |
| 1983 | 101° | 61° | 81° | — | — |
| 1982 | 91° | 65° | 78° | — | — |
| 1981 | 108° | 70° | 89° | — | — |
| 1980 | 92° | 53° | 72° | — | — |
| 1979 | 90° | 61° | 75° | — | — |
| 1978 | 97° | 56° | 76° | — | — |
| 1977 | 87° | 62° | 75° | — | — |
| 1976 | 107° | 64° | 86° | — | — |
| 1975 | 89° | 57° | 73° | — | — |
| 1974 | 98° | 60° | 79° | — | — |
| 1973coldest | 85° | 55° | 70° | — | — |
| 1972 | 99° | 67° | 83° | — | — |
| 1971 | 106° | 70° | 88° | — | — |
55 years of data from FONTANA KAISER