Weather on October 23
Rancho Cucamonga, CA
55 Years of Data
Avg High
81°F
Avg Low
55°F
Warmest
2017
82°F avg
Coldest
1975
54°F avg
About This Date
October 23rd in Rancho Cucamonga, CA typically brings warm fall weather, with average highs around 81°F and lows near 55°F — a 26°F daily swing. Over 41 years of records, the warmest October 23rd was in 2017 (82°F average), while the coldest was 1975 (54°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 5% of October 23rd dates historically, with the wettest October 23rd recording 0.64" of rain. The last decade has been 2.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.5°F warmer on this date compared to 20-30 years ago.
Planning for October 23rd in Rancho Cucamonga, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.4°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° | — | — |
| 2002 | 69° | 52° | 60° | — | — |
| 2001 | 78° | 53° | 66° | — | — |
| 2000 | 73° | 56° | 64° | — | — |
| 1999 | 88° | 55° | 71° | — | — |
| 1998 | 88° | 56° | 72° | — | — |
| 1983 | 82° | 49° | 65° | — | — |
| 1982 | 92° | 60° | 76° | — | — |
| 1981 | 86° | 46° | 66° | — | — |
| 1980 | 90° | 48° | 69° | — | — |
| 1979 | 77° | 51° | 64° | — | — |
| 1978 | 83° | 63° | 73° | — | — |
| 1977 | 83° | 53° | 68° | — | — |
| 1976 | 72° | 52° | 62° | — | — |
| 1975coldest | 67° | 42° | 54° | — | — |
| 1974 | 65° | 48° | 56° | — | — |
| 1973 | 66° | 52° | 59° | — | — |
| 1972 | 80° | 50° | 65° | — | — |
| 1971 | 78° | 47° | 62° | — | — |
41 years of data from ONTARIO INTL AP