Weather on April 3
Ontario, CA
55 Years of Data
Avg High
71°F
Avg Low
47°F
Warmest
2013
70°F avg
Coldest
1999
49°F avg
About This Date
April 3rd in Ontario, CA typically brings pleasant spring weather, with average highs around 71°F and lows near 47°F. Over 42 years of records, the warmest April 3rd was in 2013 (70°F average), while the coldest was 1999 (49°F) — a 21°F range across recorded history. Rain or other precipitation has occurred on about 7% of April 3rd dates historically. The last decade has been 5.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.8°F warmer on this date compared to 20-30 years ago.
Planning for April 3rd in Ontario, CA? Great weather for outdoor activities.
Warming Trend
1.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 82° | 50° | 66° | — | — |
| 2025 | 66° | 48° | 57° | — | — |
| 2024 | 77° | 51° | 64° | — | — |
| 2023 | 63° | 44° | 53° | — | — |
| 2022 | 64° | 55° | 60° | — | — |
| 2021 | 84° | 51° | 68° | — | — |
| 2020 | 70° | 51° | 60° | — | — |
| 2019 | 70° | 55° | 62° | — | — |
| 2018 | 75° | 52° | 63° | — | — |
| 2017 | 71° | 48° | 60° | — | — |
| 2016 | 87° | 52° | 69° | — | — |
| 2015 | 85° | 46° | 65° | — | — |
| 2014 | 71° | 44° | 58° | — | — |
| 2013warmest | 86° | 53° | 70° | — | — |
| 2012 | 79° | 48° | 63° | — | — |
| 2011 | 65° | 52° | 58° | — | — |
| 2010 | 69° | 44° | 57° | — | — |
| 2009 | 63° | 47° | 55° | — | — |
| 2008 | 67° | 52° | 59° | — | — |
| 2007 | 79° | 52° | 65° | — | — |
| 2006 | 67° | 52° | 59° | — | — |
| 2005 | 71° | 47° | 59° | — | — |
| 2004 | 66° | 54° | 60° | 0.2" | — |
| 2003 | 61° | 44° | 52° | — | — |
| 2002 | 67° | 51° | 59° | — | — |
| 2001 | 60° | 48° | 54° | — | — |
| 2000 | 81° | 51° | 66° | — | — |
| 1999coldest | 58° | 40° | 49° | — | — |
| 1998 | 60° | 41° | 51° | 0.03" | — |
| 1983 | 66° | 43° | 54° | — | — |
| 1982 | 63° | 37° | 50° | — | — |
| 1981 | 60° | 41° | 51° | — | — |
| 1980 | 68° | 39° | 54° | — | — |
| 1979 | 75° | 42° | 59° | — | — |
| 1978 | 65° | 41° | 53° | — | — |
| 1977 | 67° | 37° | 52° | 0.1" | — |
| 1976 | 64° | 45° | 54° | — | — |
| 1975 | 70° | 39° | 54° | — | — |
| 1974 | 68° | 37° | 53° | — | — |
| 1973 | 75° | 40° | 57° | — | — |
| 1972 | 75° | 44° | 60° | — | — |
| 1971 | 87° | 46° | 67° | — | — |
42 years of data from ONTARIO INTL AP