Weather on June 11
Ontario, CA
55 Years of Data
Avg High
83°F
Avg Low
57°F
Warmest
2019
90°F avg
Coldest
1977
61°F avg
About This Date
June 11th in Ontario, CA typically brings warm summer weather, with average highs around 83°F and lows near 57°F — a 26°F daily swing. Over 42 years of records, the warmest June 11th was in 2019 (90°F average), while the coldest was 1977 (61°F) — a 29°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 6.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 6.0°F warmer on this date compared to 20-30 years ago.
Planning for June 11th in Ontario, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 88° | 60° | 74° | — | — |
| 2024 | 82° | 57° | 70° | — | — |
| 2023 | 69° | 57° | 63° | — | — |
| 2022 | 94° | 64° | 79° | — | — |
| 2021 | 91° | 58° | 74° | — | — |
| 2020 | 97° | 66° | 81° | — | — |
| 2019warmest | 109° | 71° | 90° | — | — |
| 2018 | 93° | 64° | 79° | — | — |
| 2017 | 73° | 58° | 65° | — | — |
| 2016 | 67° | 59° | 63° | — | — |
| 2015 | 80° | 62° | 71° | — | — |
| 2014 | 88° | 61° | 74° | — | — |
| 2013 | 94° | 60° | 77° | — | — |
| 2012 | 87° | 56° | 71° | — | — |
| 2011 | 74° | 57° | 65° | — | — |
| 2010 | 71° | 58° | 64° | — | — |
| 2009 | 70° | 57° | 63° | — | — |
| 2008 | 85° | 59° | 72° | — | — |
| 2007 | 81° | 57° | 69° | — | — |
| 2006 | 80° | 61° | 70° | — | — |
| 2005 | 71° | 61° | 66° | — | — |
| 2004 | 84° | 58° | 71° | — | — |
| 2003 | 74° | 56° | 65° | — | — |
| 2002 | 80° | 55° | 68° | — | — |
| 2001 | 84° | 57° | 71° | — | — |
| 2000 | 88° | 57° | 72° | — | — |
| 1999 | 78° | 53° | 66° | — | — |
| 1998 | 70° | 56° | 63° | — | — |
| 1984 | 84° | 52° | 68° | — | — |
| 1983 | 80° | 56° | 68° | — | — |
| 1982 | 78° | 47° | 62° | — | — |
| 1981 | 87° | 60° | 74° | — | — |
| 1980 | 85° | 51° | 68° | — | — |
| 1979 | 107° | 65° | 86° | — | — |
| 1978 | 88° | 53° | 70° | — | — |
| 1977coldest | 75° | 46° | 61° | — | — |
| 1976 | 74° | 50° | 62° | — | — |
| 1975 | 93° | 50° | 72° | — | — |
| 1974 | 85° | 50° | 67° | — | — |
| 1973 | 78° | 56° | 67° | — | — |
| 1972 | 90° | 47° | 68° | — | — |
| 1971 | 73° | 53° | 63° | — | — |
42 years of data from ONTARIO INTL AP