Weather on October 12
Ontario, CA
55 Years of Data
About This Date
October 12th in Ontario, CA typically brings warm fall weather, with average highs around 83°F and lows near 55°F — a 28°F daily swing. Over 41 years of records, the warmest October 12th was in 2015 (83°F average), while the coldest was 1975 (54°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 5% of October 12th dates historically, with the wettest October 12th recording 0.99" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for October 12th in Ontario, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 82° | 56° | 69° | — | — |
| 2024 | 88° | 58° | 73° | — | — |
| 2023 | 87° | 55° | 71° | — | — |
| 2022 | 84° | 63° | 73° | — | — |
| 2021 | 73° | 54° | 63° | — | — |
| 2020 | 100° | 61° | 80° | — | — |
| 2019 | 87° | 49° | 68° | — | — |
| 2018 | 88° | 57° | 72° | 0.99" | — |
| 2017 | 80° | 56° | 68° | — | — |
| 2016 | 73° | 54° | 63° | — | — |
| 2015warmest | 95° | 71° | 83° | — | — |
| 2014 | 85° | 60° | 72° | — | — |
| 2013 | 79° | 51° | 65° | — | — |
| 2012 | 69° | 54° | 61° | — | — |
| 2011 | 100° | 60° | 80° | — | — |
| 2010 | 89° | 57° | 73° | — | — |
| 2009 | 64° | 51° | 58° | — | — |
| 2008 | 72° | 48° | 60° | — | — |
| 2007 | 71° | 54° | 62° | — | — |
| 2006 | 75° | 53° | 64° | — | — |
| 2005 | 83° | 54° | 68° | — | — |
| 2004 | 92° | 59° | 75° | — | — |
| 2003 | 91° | 59° | 75° | — | — |
| 2002 | 74° | 56° | 65° | — | — |
| 2001 | 91° | 53° | 72° | — | — |
| 2000 | 68° | 50° | 59° | — | — |
| 1999 | 97° | 58° | 77° | — | — |
| 1998 | 85° | 53° | 69° | — | — |
| 1983 | 92° | 57° | 74° | — | — |
| 1982 | 85° | 49° | 67° | — | — |
| 1981 | 69° | 49° | 59° | 0.23" | — |
| 1980 | 85° | 57° | 71° | — | — |
| 1979 | 78° | 49° | 63° | — | — |
| 1978 | 95° | 60° | 78° | — | — |
| 1977 | 91° | 57° | 74° | — | — |
| 1976 | 90° | 54° | 72° | — | — |
| 1975coldest | 64° | 44° | 54° | — | — |
| 1974 | 85° | 51° | 68° | — | — |
| 1973 | 81° | 47° | 64° | — | — |
| 1972 | 75° | 52° | 63° | — | — |
| 1971 | 94° | 60° | 77° | — | — |
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
Ontario, CA has no months that meet our "pleasant" threshold — every season has tradeoffs.