Weather on November 9
Ontario, CA
55 Years of Data
Avg High
73°F
Avg Low
48°F
Warmest
2025
75°F avg
Coldest
2020
50°F avg
About This Date
November 9th in Ontario, CA typically brings pleasant fall weather, with average highs around 73°F and lows near 48°F — a 25°F daily swing. Over 41 years of records, the warmest November 9th was in 2025 (75°F average), while the coldest was 2020 (50°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 10% of November 9th dates historically, with the wettest November 9th recording 1.63" of rain. The last decade has been 4.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.3°F warmer on this date compared to 20-30 years ago.
Planning for November 9th in Ontario, CA? Great weather for outdoor activities.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025warmest | 94° | 56° | 75° | — | — |
| 2024 | 78° | 47° | 62° | — | — |
| 2023 | 77° | 47° | 62° | — | — |
| 2022 | 60° | 48° | 54° | 0.18" | — |
| 2021 | 73° | 55° | 64° | — | — |
| 2020coldest | 61° | 40° | 50° | — | — |
| 2019 | 90° | 51° | 70° | — | — |
| 2018 | 83° | 49° | 66° | — | — |
| 2017 | 72° | 56° | 64° | — | — |
| 2016 | 93° | 52° | 72° | — | — |
| 2015 | 66° | 49° | 57° | — | — |
| 2014 | 86° | 54° | 70° | — | — |
| 2013 | 80° | 47° | 63° | — | — |
| 2012 | 61° | 48° | 54° | — | — |
| 2011 | 77° | 40° | 58° | — | — |
| 2010 | 68° | 42° | 55° | — | — |
| 2009 | 82° | 48° | 65° | — | — |
| 2008 | 66° | 52° | 59° | 0.05" | — |
| 2007 | 64° | 54° | 59° | — | — |
| 2006 | 70° | 54° | 62° | — | — |
| 2005 | 68° | 57° | 63° | — | — |
| 2004 | 62° | 51° | 57° | — | — |
| 2003 | 68° | 56° | 62° | — | — |
| 2002 | 63° | 58° | 60° | 1.24" | — |
| 2001 | 81° | 52° | 66° | — | — |
| 2000 | 62° | 47° | 54° | — | — |
| 1999 | 71° | 47° | 59° | — | — |
| 1998 | 65° | 47° | 56° | — | — |
| 1983 | 75° | 40° | 57° | — | — |
| 1982 | 59° | 43° | 51° | 1.63" | — |
| 1981 | 84° | 47° | 65° | — | — |
| 1980 | 77° | 42° | 60° | — | — |
| 1979 | 65° | 44° | 54° | — | — |
| 1978 | 79° | 50° | 64° | — | — |
| 1977 | 73° | 46° | 60° | — | — |
| 1976 | 81° | 54° | 67° | — | — |
| 1975 | 73° | 41° | 57° | — | — |
| 1974 | 73° | 43° | 58° | — | — |
| 1973 | 68° | 48° | 58° | — | — |
| 1972 | 70° | 40° | 55° | — | — |
| 1971 | 78° | 45° | 61° | — | — |
41 years of data from ONTARIO INTL AP