Weather on August 22
Fontana, CA
55 Years of Data
Avg High
94°F
Avg Low
63°F
Warmest
1972
90°F avg
Coldest
1978
69°F avg
About This Date
August 22nd in Fontana, CA typically brings hot summer weather, with average highs around 94°F and lows near 63°F — a 31°F daily swing. Over 55 years of records, the warmest August 22nd was in 1972 (90°F average), while the coldest was 1978 (69°F) — a 21°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 2.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.7°F warmer on this date compared to 20-30 years ago.
Planning for August 22nd in Fontana, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 103° | 75° | 89° | — | — |
| 2024 | 91° | 64° | 78° | — | — |
| 2023 | 90° | 64° | 77° | — | — |
| 2022 | 91° | 65° | 78° | — | — |
| 2021 | 84° | 65° | 74° | — | — |
| 2020 | 100° | 76° | 88° | — | — |
| 2019 | 92° | 64° | 78° | — | — |
| 2018 | 93° | 68° | 81° | — | — |
| 2017 | 95° | 62° | 79° | — | — |
| 2016 | 94° | 64° | 79° | — | — |
| 2015 | 91° | 65° | 78° | — | — |
| 2014 | 91° | 66° | 79° | — | — |
| 2013 | 100° | 68° | 84° | — | — |
| 2012 | 90° | 68° | 79° | — | — |
| 2011 | 92° | 61° | 76° | — | — |
| 2010 | 97° | 68° | 82° | — | — |
| 2009 | 95° | 68° | 82° | — | — |
| 2008 | 89° | 63° | 76° | — | — |
| 2007 | 93° | 66° | 80° | — | — |
| 2006 | 101° | 67° | 84° | — | — |
| 2005 | 97° | 62° | 79° | — | — |
| 2004 | 86° | 60° | 73° | — | — |
| 2003 | 87° | 62° | 75° | — | — |
| 2002 | 86° | 59° | 73° | — | — |
| 2001 | 82° | 60° | 71° | — | — |
| 2000 | 89° | 63° | 76° | — | — |
| 1999 | 96° | 61° | 78° | — | — |
| 1998 | 104° | 64° | 84° | — | — |
| 1997 | 101° | 68° | 84° | — | — |
| 1996 | 101° | 62° | 81° | — | — |
| 1995 | 99° | 69° | 84° | — | — |
| 1994 | 93° | 60° | 77° | — | — |
| 1993 | 96° | 58° | 77° | — | — |
| 1992 | 91° | 67° | 79° | — | — |
| 1991 | 100° | 60° | 80° | — | — |
| 1990 | 92° | 59° | 75° | — | — |
| 1989 | 88° | 57° | 72° | — | — |
| 1988 | 93° | 61° | 77° | — | — |
| 1987 | 93° | 58° | 75° | — | — |
| 1986 | 100° | 63° | 81° | — | — |
| 1985 | 99° | 59° | 79° | — | — |
| 1984 | 99° | 64° | 81° | — | — |
| 1983 | 83° | 60° | 71° | — | — |
| 1982 | 104° | 72° | 88° | — | — |
| 1981 | 100° | 59° | 80° | — | — |
| 1980 | 88° | 57° | 72° | — | — |
| 1979 | 94° | 54° | 74° | — | — |
| 1978coldest | 90° | 49° | 69° | — | — |
| 1977 | 90° | 66° | 78° | — | — |
| 1976 | 90° | 64° | 77° | — | — |
| 1975 | 93° | 56° | 74° | — | — |
| 1974 | 90° | 59° | 74° | — | — |
| 1973 | 94° | 67° | 80° | — | — |
| 1972warmest | 108° | 72° | 90° | — | — |
| 1971 | 93° | 66° | 80° | — | — |
55 years of data from FONTANA KAISER