Weather on June 23
Fontana, CA
55 Years of Data
Avg High
90°F
Avg Low
60°F
Warmest
1973
87°F avg
Coldest
1982
65°F avg
About This Date
June 23rd in Fontana, CA typically brings hot summer weather, with average highs around 90°F and lows near 60°F — a 30°F daily swing. Over 55 years of records, the warmest June 23rd was in 1973 (87°F average), while the coldest was 1982 (65°F) — a 22°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 4.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.0°F warmer on this date compared to 20-30 years ago.
Planning for June 23rd in Fontana, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 82° | 59° | 71° | — | — |
| 2024 | 100° | 73° | 87° | — | — |
| 2023 | 80° | 54° | 67° | — | — |
| 2022 | 97° | 70° | 83° | — | — |
| 2021 | 94° | 64° | 79° | — | — |
| 2020 | 91° | 62° | 77° | — | — |
| 2019 | 94° | 60° | 77° | — | — |
| 2018 | 82° | 61° | 71° | — | — |
| 2017 | 91° | 62° | 77° | — | — |
| 2016 | 91° | 62° | 77° | — | — |
| 2015 | 96° | 65° | 80° | — | — |
| 2014 | 87° | 59° | 73° | — | — |
| 2013 | 82° | 61° | 71° | — | — |
| 2012 | 85° | 58° | 71° | — | — |
| 2011 | 91° | 60° | 76° | — | — |
| 2010 | 86° | 57° | 72° | — | — |
| 2009 | 85° | 57° | 71° | — | — |
| 2008 | 95° | 68° | 82° | — | — |
| 2007 | 87° | 61° | 74° | — | — |
| 2006 | 94° | 61° | 77° | — | — |
| 2005 | 89° | 59° | 74° | — | — |
| 2004 | 90° | 62° | 76° | — | — |
| 2003 | 72° | 58° | 65° | — | — |
| 2002 | 89° | 58° | 73° | — | — |
| 2001 | 94° | 65° | 79° | — | — |
| 2000 | 85° | 61° | 73° | — | — |
| 1999 | 90° | 58° | 74° | — | — |
| 1998 | 81° | 57° | 69° | — | — |
| 1997 | 84° | 59° | 72° | — | — |
| 1996 | 85° | 58° | 71° | — | — |
| 1995 | 94° | 57° | 75° | — | — |
| 1994 | 103° | 62° | 82° | — | — |
| 1993 | 96° | 60° | 78° | — | — |
| 1992 | 99° | 59° | 79° | — | — |
| 1991 | 83° | 54° | 68° | — | — |
| 1990 | 98° | 59° | 79° | — | — |
| 1989 | 87° | 61° | 74° | — | — |
| 1988 | 87° | 57° | 72° | — | — |
| 1987 | 91° | 60° | 76° | — | — |
| 1986 | 90° | 57° | 73° | — | — |
| 1985 | 91° | 56° | 73° | — | — |
| 1984 | 98° | 51° | 75° | — | — |
| 1983 | 86° | 52° | 69° | — | — |
| 1982coldest | 73° | 57° | 65° | — | — |
| 1981 | 97° | 63° | 80° | — | — |
| 1980 | 87° | 51° | 69° | — | — |
| 1979 | 91° | 52° | 71° | — | — |
| 1978 | 103° | 58° | 80° | — | — |
| 1977 | 90° | 55° | 72° | — | — |
| 1976 | 105° | 65° | 85° | — | — |
| 1975 | 86° | 55° | 71° | — | — |
| 1974 | 103° | 64° | 83° | — | — |
| 1973warmest | 106° | 68° | 87° | — | — |
| 1972 | 74° | 61° | 67° | — | — |
| 1971 | 101° | 65° | 83° | — | — |
55 years of data from FONTANA KAISER