Weather on June 26
Ontario, CA
55 Years of Data
Avg High
92°F
Avg Low
60°F
Warmest
2017
88°F avg
Coldest
1972
64°F avg
About This Date
June 26th in Ontario, CA typically brings hot summer weather, with average highs around 92°F and lows near 60°F — a 32°F daily swing. Over 42 years of records, the warmest June 26th was in 2017 (88°F average), while the coldest was 1972 (64°F) — a 24°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 3.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.2°F warmer on this date compared to 20-30 years ago.
Planning for June 26th in Ontario, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 89° | 61° | 75° | — | — |
| 2024 | 91° | 64° | 78° | — | — |
| 2023 | 83° | 56° | 69° | — | — |
| 2022 | 100° | 63° | 81° | — | — |
| 2021 | 96° | 65° | 80° | — | — |
| 2020 | 92° | 61° | 76° | — | — |
| 2019 | 85° | 65° | 75° | — | — |
| 2018 | 92° | 59° | 75° | — | — |
| 2017warmest | 105° | 72° | 88° | — | — |
| 2016 | 101° | 63° | 82° | — | — |
| 2015 | 97° | 65° | 81° | — | — |
| 2014 | 86° | 64° | 75° | — | — |
| 2013 | 94° | 65° | 79° | — | — |
| 2012 | 90° | 59° | 74° | — | — |
| 2011 | 90° | 58° | 74° | — | — |
| 2010 | 81° | 58° | 69° | — | — |
| 2009 | 90° | 58° | 74° | — | — |
| 2008 | 86° | 61° | 73° | — | — |
| 2007 | 92° | 63° | 77° | — | — |
| 2006 | 98° | 72° | 85° | — | — |
| 2005 | 84° | 54° | 69° | — | — |
| 2004 | 93° | 59° | 76° | — | — |
| 2003 | 99° | 60° | 79° | — | — |
| 2002 | 90° | 59° | 74° | — | — |
| 2001 | 88° | 60° | 74° | — | — |
| 2000 | 98° | 68° | 83° | — | — |
| 1999 | 86° | 57° | 72° | — | — |
| 1998 | 84° | 58° | 71° | — | — |
| 1984 | 99° | 59° | 79° | — | — |
| 1983 | 79° | 59° | 69° | — | — |
| 1982 | 90° | 52° | 71° | — | — |
| 1981 | 98° | 59° | 79° | — | — |
| 1980 | 97° | 53° | 75° | — | — |
| 1979 | 98° | 57° | 78° | — | — |
| 1978 | 81° | 52° | 66° | — | — |
| 1977 | 87° | 56° | 71° | — | — |
| 1976 | 101° | 65° | 83° | — | — |
| 1975 | 91° | 54° | 72° | — | — |
| 1974 | 98° | 62° | 80° | — | — |
| 1973 | 97° | 56° | 76° | — | — |
| 1972coldest | 83° | 45° | 64° | — | — |
| 1971 | 84° | 57° | 71° | — | — |
42 years of data from ONTARIO INTL AP