Weather on November 9
Ontario, CA
55 Years of Data
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 0.64" 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.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025warmest | 94° | 56° | 75° | — | — |
| 2024 | 78° | 47° | 62° | — | — |
| 2023 | 77° | 47° | 62° | — | — |
| 2022 | 60° | 48° | 54° | 0.07" | — |
| 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° | 0.02" | — |
| 2007 | 64° | 54° | 59° | — | — |
| 2006 | 70° | 54° | 62° | — | — |
| 2005 | 68° | 57° | 63° | — | — |
| 2004 | 62° | 51° | 57° | — | — |
| 2003 | 68° | 56° | 62° | — | — |
| 2002 | 63° | 58° | 60° | 0.49" | — |
| 2001 | 81° | 52° | 66° | — | — |
| 2000 | 62° | 47° | 54° | — | — |
| 1999 | 71° | 47° | 59° | — | — |
| 1998 | 65° | 47° | 56° | — | — |
| 1983 | 75° | 40° | 57° | — | — |
| 1982 | 59° | 43° | 51° | 0.64" | — |
| 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° | — | — |
Ontario, CA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Ontario, CA Monthly Precipitation
Average rainfall per month, in inches.
Ontario, CA Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Ontario, CA
Most pleasant months in Ontario, CA: January, February, March, April, May, October, November, December.
What to expect on November 9th
This page shows what actually happened each year. For the odds — typical high and low, and how often it stays dry — see the climatological outlook for this date.
November 9th outlook →