Weather on October 16
Ontario, CA
55 Years of Data
Avg High
81°F
Avg Low
55°F
Warmest
2020
84°F avg
Coldest
1971
49°F avg
About This Date
October 16th 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 16th was in 2020 (84°F average), while the coldest was 1971 (49°F) — a 35°F range across recorded history. Rain or other precipitation has occurred on about 7% of October 16th dates historically. The last decade has been 5.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.2°F warmer on this date compared to 20-30 years ago.
Planning for October 16th 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 | 78° | 52° | 65° | — | — |
| 2024 | 66° | 60° | 63° | — | — |
| 2023 | 92° | 60° | 76° | — | — |
| 2022 | 69° | 59° | 64° | — | — |
| 2021 | 93° | 53° | 73° | — | — |
| 2020warmest | 102° | 66° | 84° | — | — |
| 2019 | 94° | 59° | 76° | — | — |
| 2018 | 83° | 53° | 68° | — | — |
| 2017 | 97° | 61° | 79° | — | — |
| 2016 | 77° | 62° | 70° | — | — |
| 2015 | 80° | 67° | 73° | 0.13" | — |
| 2014 | 79° | 57° | 68° | — | — |
| 2013 | 85° | 59° | 72° | — | — |
| 2012 | 96° | 62° | 79° | — | — |
| 2011 | 85° | 56° | 70° | — | — |
| 2010 | 70° | 60° | 65° | — | — |
| 2009 | 98° | 62° | 80° | — | — |
| 2008 | 93° | 59° | 76° | — | — |
| 2007 | 68° | 56° | 62° | — | — |
| 2006 | 64° | 58° | 61° | — | — |
| 2005 | 71° | 55° | 63° | — | — |
| 2004 | 66° | 58° | 62° | 0.03" | — |
| 2003 | 89° | 55° | 72° | — | — |
| 2002 | 67° | 57° | 62° | — | — |
| 2001 | 92° | 58° | 75° | — | — |
| 2000 | 86° | 52° | 69° | — | — |
| 1999 | 83° | 52° | 67° | — | — |
| 1998 | 76° | 51° | 63° | — | — |
| 1983 | 75° | 54° | 64° | — | — |
| 1982 | 90° | 50° | 70° | — | — |
| 1981 | 77° | 43° | 60° | — | — |
| 1980 | 67° | 46° | 56° | — | — |
| 1979 | 73° | 51° | 62° | — | — |
| 1978 | 85° | 53° | 69° | — | — |
| 1977 | 88° | 58° | 73° | — | — |
| 1976 | 77° | 49° | 63° | — | — |
| 1975 | 85° | 51° | 68° | — | — |
| 1974 | 94° | 58° | 76° | — | — |
| 1973 | 92° | 58° | 75° | — | — |
| 1972 | 71° | 44° | 58° | — | — |
| 1971coldest | 57° | 41° | 49° | 0.46" | — |
41 years of data from ONTARIO INTL AP