Weather on October 23
Fontana, CA
55 Years of Data
Avg High
82°F
Avg Low
55°F
Warmest
2017
82°F avg
Coldest
2002
60°F avg
About This Date
October 23rd in Fontana, CA typically brings warm fall weather, with average highs around 82°F and lows near 55°F — a 27°F daily swing. Over 55 years of records, the warmest October 23rd was in 2017 (82°F average), while the coldest was 2002 (60°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 11% of October 23rd dates historically, with the wettest October 23rd recording 2.62" of rain. The last decade has been 3.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.2°F warmer on this date compared to 20-30 years ago.
Planning for October 23rd in Fontana, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 75° | 55° | 65° | — | — |
| 2024 | 92° | 60° | 76° | — | — |
| 2023 | 74° | 59° | 66° | — | — |
| 2022 | 72° | 54° | 63° | — | — |
| 2021 | 70° | 59° | 64° | 0.05" | — |
| 2020 | 76° | 63° | 69° | — | — |
| 2019 | 95° | 61° | 78° | — | — |
| 2018 | 83° | 58° | 70° | — | — |
| 2017warmest | 104° | 60° | 82° | — | — |
| 2016 | 77° | 58° | 67° | 0.64" | — |
| 2015 | 88° | 62° | 75° | — | — |
| 2014 | 92° | 59° | 75° | — | — |
| 2013 | 72° | 55° | 63° | — | — |
| 2012 | 71° | 56° | 63° | — | — |
| 2011 | 92° | 57° | 74° | — | — |
| 2010 | 67° | 54° | 60° | — | — |
| 2009 | 92° | 55° | 73° | — | — |
| 2008 | 93° | 57° | 75° | — | — |
| 2007 | 94° | 66° | 80° | — | — |
| 2006 | 91° | 55° | 73° | — | — |
| 2005 | 73° | 60° | 67° | — | — |
| 2004 | 72° | 50° | 61° | — | — |
| 2003 | 98° | 61° | 79° | — | — |
| 2002coldest | 69° | 52° | 60° | — | — |
| 2001 | 78° | 53° | 66° | — | — |
| 2000 | 73° | 56° | 64° | — | — |
| 1999 | 88° | 55° | 71° | — | — |
| 1998 | 88° | 56° | 72° | — | — |
| 1997 | 76° | 58° | 67° | — | — |
| 1996 | 81° | 42° | 61° | — | — |
| 1995 | 82° | 45° | 63° | — | — |
| 1994 | 79° | 49° | 64° | — | — |
| 1993 | 91° | 50° | 71° | — | — |
| 1992 | 87° | 62° | 75° | 0.58" | — |
| 1991 | 75° | 60° | 68° | — | — |
| 1990 | 99° | 50° | 74° | — | — |
| 1989 | 79° | 60° | 69° | 0.03" | — |
| 1988 | 76° | 57° | 66° | — | — |
| 1987 | 77° | 61° | 69° | 2.62" | — |
| 1986 | 77° | 45° | 61° | — | — |
| 1985 | 86° | 46° | 66° | — | — |
| 1984 | 75° | 47° | 61° | — | — |
| 1983 | 82° | 49° | 65° | — | — |
| 1982 | 92° | 60° | 76° | — | — |
| 1981 | 86° | 46° | 66° | — | — |
| 1980 | 90° | 48° | 69° | — | — |
| 1979 | 82° | 44° | 63° | — | — |
| 1978 | 87° | — | — | — | — |
| 1977 | 90° | 52° | 71° | — | — |
| 1976 | 73° | 57° | 65° | — | — |
| 1975 | 73° | 51° | 62° | — | — |
| 1974 | 68° | 55° | 62° | — | — |
| 1973 | 72° | 52° | 62° | 0.25" | — |
| 1972 | 86° | 56° | 71° | — | — |
| 1971 | 86° | 54° | 70° | — | — |
55 years of data from FONTANA KAISER