Weather on October 22
Ontario, CA
55 Years of Data
Avg High
81°F
Avg Low
55°F
Warmest
2003
80°F avg
Coldest
1974
57°F avg
About This Date
October 22nd in Ontario, 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 22nd was in 2003 (80°F average), while the coldest was 1974 (57°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 5% of October 22nd dates historically, with the wettest October 22nd recording 1.02" of rain. 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 October 22nd in Ontario, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 74° | 57° | 65° | — | — |
| 2024 | 92° | 60° | 76° | — | — |
| 2023 | 75° | 57° | 66° | — | — |
| 2022 | 72° | 58° | 65° | — | — |
| 2021 | 76° | 54° | 65° | — | — |
| 2020 | 75° | 62° | 69° | — | — |
| 2019 | 95° | 62° | 79° | — | — |
| 2018 | 80° | 56° | 68° | — | — |
| 2017 | 95° | 55° | 75° | — | — |
| 2016 | 89° | 54° | 71° | — | — |
| 2015 | 81° | 59° | 70° | — | — |
| 2014 | 89° | 57° | 73° | — | — |
| 2013 | 83° | 53° | 68° | — | — |
| 2012 | 72° | 60° | 66° | — | — |
| 2011 | 92° | 54° | 73° | — | — |
| 2010 | 66° | 57° | 62° | 0.08" | — |
| 2009 | 87° | 56° | 71° | — | — |
| 2008 | 95° | 58° | 76° | — | — |
| 2007 | 86° | 68° | 77° | — | — |
| 2006 | 91° | 55° | 73° | — | — |
| 2005 | 66° | 59° | 63° | — | — |
| 2004 | 69° | 50° | 60° | — | — |
| 2003warmest | 100° | 60° | 80° | — | — |
| 2002 | 65° | 58° | 61° | — | — |
| 2001 | 72° | 57° | 64° | — | — |
| 2000 | 78° | 53° | 66° | — | — |
| 1999 | 92° | 57° | 74° | — | — |
| 1998 | 88° | 53° | 70° | — | — |
| 1983 | 89° | 49° | 69° | — | — |
| 1982 | 90° | 55° | 72° | — | — |
| 1981 | 89° | 45° | 67° | — | — |
| 1980 | 84° | 47° | 65° | — | — |
| 1979 | 75° | 46° | 61° | — | — |
| 1978 | 79° | 53° | 66° | — | — |
| 1977 | 79° | 48° | 63° | — | — |
| 1976 | 71° | 55° | 63° | — | — |
| 1975 | 64° | 52° | 58° | 1.02" | — |
| 1974coldest | 67° | 47° | 57° | — | — |
| 1973 | 70° | 51° | 60° | — | — |
| 1972 | 73° | 47° | 60° | — | — |
| 1971 | 87° | 47° | 67° | — | — |
41 years of data from ONTARIO INTL AP