Weather on April 9
Ontario, CA
55 Years of Data
Avg High
74°F
Avg Low
48°F
Warmest
2014
77°F avg
Coldest
2001
46°F avg
About This Date
April 9th in Ontario, CA typically brings pleasant spring weather, with average highs around 74°F and lows near 48°F — a 26°F daily swing. Over 43 years of records, the warmest April 9th was in 2014 (77°F average), while the coldest was 2001 (46°F) — a 31°F range across recorded history. Rain or other precipitation has occurred on about 14% of April 9th dates historically, with the wettest April 9th recording 1.68" of rain. The last decade has been 7.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 7.8°F warmer on this date compared to 20-30 years ago.
Planning for April 9th in Ontario, CA? Great weather for outdoor activities.
Warming Trend
1.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 79° | 59° | 69° | — | — |
| 2025 | 89° | 57° | 73° | — | — |
| 2024 | 80° | 45° | 62° | — | — |
| 2023 | 83° | 50° | 66° | — | — |
| 2022 | 89° | 59° | 74° | — | — |
| 2021 | 83° | 52° | 67° | — | — |
| 2020 | 53° | 47° | 50° | 1.68" | — |
| 2019 | 79° | 58° | 68° | — | — |
| 2018 | 96° | 52° | 74° | — | — |
| 2017 | 74° | 44° | 59° | — | — |
| 2016 | 65° | 55° | 60° | 0.08" | — |
| 2015 | 78° | 48° | 63° | — | — |
| 2014warmest | 93° | 61° | 77° | — | — |
| 2013 | 74° | 45° | 59° | — | — |
| 2012 | 84° | 48° | 66° | — | — |
| 2011 | 58° | 39° | 48° | — | — |
| 2010 | 78° | 51° | 65° | — | — |
| 2009 | 67° | 50° | 58° | — | — |
| 2008 | 67° | 47° | 57° | — | — |
| 2007 | 69° | 52° | 60° | — | — |
| 2006 | 67° | 49° | 58° | — | — |
| 2005 | 66° | 45° | 55° | — | — |
| 2004 | 76° | 56° | 66° | — | — |
| 2003 | 86° | 53° | 70° | — | — |
| 2002 | 75° | 48° | 62° | — | — |
| 2001coldest | 52° | 40° | 46° | 0.79" | — |
| 2000 | 75° | 47° | 61° | — | — |
| 1999 | 59° | 35° | 47° | — | — |
| 1998 | 72° | 41° | 56° | — | — |
| 1984 | 74° | — | — | — | — |
| 1983 | 66° | 43° | 54° | — | — |
| 1982 | 71° | 46° | 59° | — | — |
| 1981 | 74° | 43° | 58° | — | — |
| 1980 | 83° | 51° | 67° | — | — |
| 1979 | 59° | 53° | 56° | 0.13" | — |
| 1978 | 67° | 40° | 53° | 0.08" | — |
| 1977 | 67° | 41° | 54° | — | — |
| 1976 | 68° | 40° | 54° | — | — |
| 1975 | 63° | 41° | 52° | 1.27" | — |
| 1974 | 78° | 46° | 62° | — | — |
| 1973 | 76° | 46° | 61° | — | — |
| 1972 | 77° | 43° | 60° | — | — |
| 1971 | 74° | 42° | 58° | — | — |
43 years of data from ONTARIO INTL AP