Weather on August 24
Ontario, CA
55 Years of Data
Avg High
93°F
Avg Low
62°F
Warmest
2010
89°F avg
Coldest
1978
67°F avg
About This Date
August 24th in Ontario, CA typically brings hot summer weather, with average highs around 93°F and lows near 62°F — a 31°F daily swing. Over 42 years of records, the warmest August 24th was in 2010 (89°F average), while the coldest was 1978 (67°F) — a 22°F range across recorded history. This date has historically been dry, with little recorded precipitation. 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 August 24th in Ontario, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 98° | 74° | 86° | — | — |
| 2024 | 85° | 60° | 72° | — | — |
| 2023 | 89° | 67° | 78° | — | — |
| 2022 | 95° | 67° | 81° | — | — |
| 2021 | 94° | 64° | 79° | — | — |
| 2020 | 97° | 73° | 85° | — | — |
| 2019 | 99° | 65° | 82° | — | — |
| 2018 | 89° | 64° | 77° | — | — |
| 2017 | 87° | 64° | 76° | — | — |
| 2016 | 94° | 65° | 79° | — | — |
| 2015 | 99° | 65° | 82° | — | — |
| 2014 | 91° | 62° | 77° | — | — |
| 2013 | 97° | 63° | 80° | — | — |
| 2012 | 88° | 66° | 77° | — | — |
| 2011 | 95° | 66° | 81° | — | — |
| 2010warmest | 106° | 72° | 89° | — | — |
| 2009 | 94° | 65° | 79° | — | — |
| 2008 | 102° | 63° | 82° | — | — |
| 2007 | 92° | 64° | 78° | — | — |
| 2006 | 96° | 68° | 82° | — | — |
| 2005 | 95° | 60° | 78° | — | — |
| 2004 | 82° | 58° | 70° | — | — |
| 2003 | 102° | 67° | 84° | — | — |
| 2002 | 93° | 59° | 76° | — | — |
| 2001 | 92° | 62° | 77° | — | — |
| 2000 | 93° | 65° | 79° | — | — |
| 1999 | 102° | 67° | 84° | — | — |
| 1998 | 96° | 66° | 81° | — | — |
| 1984 | 103° | 57° | 80° | — | — |
| 1983 | 86° | 54° | 70° | — | — |
| 1982 | 91° | 66° | 79° | — | — |
| 1981 | 100° | 59° | 80° | — | — |
| 1980 | 90° | 58° | 74° | — | — |
| 1979 | 96° | 59° | 78° | — | — |
| 1978coldest | 85° | 49° | 67° | — | — |
| 1977 | 86° | 61° | 73° | — | — |
| 1976 | 93° | 57° | 75° | — | — |
| 1975 | 94° | 58° | 76° | — | — |
| 1974 | 93° | 57° | 75° | — | — |
| 1973 | 87° | 50° | 69° | — | — |
| 1972 | 87° | 55° | 71° | — | — |
| 1971 | 85° | 58° | 71° | — | — |
42 years of data from ONTARIO INTL AP