Weather on June 8
Ontario, CA
55 Years of Data
Avg High
83°F
Avg Low
57°F
Warmest
2015
84°F avg
Coldest
1971
61°F avg
About This Date
June 8th 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 8th was in 2015 (84°F average), while the coldest was 1971 (61°F) — a 23°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 5.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.1°F warmer on this date compared to 20-30 years ago.
Planning for June 8th in Ontario, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.0°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 85° | 57° | 71° | — | — |
| 2024 | 80° | 61° | 70° | — | — |
| 2023 | 77° | 55° | 66° | — | — |
| 2022 | 90° | 61° | 75° | — | — |
| 2021 | 81° | 60° | 70° | — | — |
| 2020 | 87° | 55° | 71° | — | — |
| 2019 | 91° | 64° | 78° | — | — |
| 2018 | 92° | 59° | 75° | — | — |
| 2017 | 79° | 59° | 69° | — | — |
| 2016 | 88° | 57° | 72° | — | — |
| 2015warmest | 105° | 63° | 84° | — | — |
| 2014 | 91° | 58° | 74° | — | — |
| 2013 | 85° | 60° | 72° | — | — |
| 2012 | 85° | 59° | 72° | — | — |
| 2011 | 71° | 55° | 63° | — | — |
| 2010 | 82° | 62° | 72° | — | — |
| 2009 | 75° | 54° | 64° | — | — |
| 2008 | 90° | 57° | 73° | — | — |
| 2007 | 82° | 56° | 69° | — | — |
| 2006 | 81° | 65° | 73° | — | — |
| 2005 | 79° | 56° | 67° | — | — |
| 2004 | 76° | 60° | 68° | — | — |
| 2003 | 76° | 61° | 68° | — | — |
| 2002 | 79° | 58° | 68° | — | — |
| 2001 | 90° | 59° | 74° | — | — |
| 2000 | 71° | 54° | 62° | — | — |
| 1999 | 75° | 52° | 63° | — | — |
| 1998 | 69° | 57° | 63° | — | — |
| 1984 | 84° | 50° | 67° | — | — |
| 1983 | 77° | 57° | 67° | — | — |
| 1982 | 76° | 47° | 61° | — | — |
| 1981 | 94° | 59° | 76° | — | — |
| 1980 | 89° | 48° | 69° | — | — |
| 1979 | 89° | 52° | 70° | — | — |
| 1978 | 95° | 57° | 76° | — | — |
| 1977 | 75° | 58° | 66° | — | — |
| 1976 | 78° | 45° | 61° | — | — |
| 1975 | 76° | 52° | 64° | — | — |
| 1974 | 83° | 54° | 68° | — | — |
| 1973 | 93° | 59° | 76° | — | — |
| 1972 | 75° | 57° | 66° | — | — |
| 1971coldest | 70° | 52° | 61° | — | — |
42 years of data from ONTARIO INTL AP