Weather on April 12
Ontario, CA
55 Years of Data
Avg High
73°F
Avg Low
49°F
Warmest
2000
72°F avg
Coldest
1983
49°F avg
About This Date
April 12th in Ontario, CA typically brings pleasant spring weather, with average highs around 73°F and lows near 49°F. Over 42 years of records, the warmest April 12th was in 2000 (72°F average), while the coldest was 1983 (49°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 14% of April 12th dates historically, with the wettest April 12th recording 1.78" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for April 12th in Ontario, CA? Great weather for outdoor activities.
Warming Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 82° | 56° | 69° | — | — |
| 2024 | 64° | 51° | 58° | — | — |
| 2023 | 67° | 53° | 60° | — | — |
| 2022 | 70° | 47° | 58° | — | — |
| 2021 | 72° | 55° | 63° | — | — |
| 2020 | 60° | 53° | 57° | 0.03" | — |
| 2019 | 78° | 53° | 66° | — | — |
| 2018 | 72° | 51° | 61° | — | — |
| 2017 | 78° | 51° | 65° | — | — |
| 2016 | 77° | 53° | 65° | — | — |
| 2015 | 82° | 51° | 67° | — | — |
| 2014 | 71° | 54° | 62° | — | — |
| 2013 | 81° | 53° | 67° | — | — |
| 2012 | 63° | 45° | 54° | 0.1" | — |
| 2011 | 72° | 47° | 59° | — | — |
| 2010 | 61° | 46° | 53° | 1.78" | — |
| 2009 | 77° | 44° | 61° | — | — |
| 2008 | 93° | 52° | 72° | — | — |
| 2007 | 70° | 50° | 60° | — | — |
| 2006 | 76° | 49° | 62° | — | — |
| 2005 | 81° | 51° | 66° | — | — |
| 2004 | 81° | 51° | 66° | — | — |
| 2003 | 72° | 55° | 63° | — | — |
| 2002 | 75° | 54° | 64° | — | — |
| 2001 | 64° | 49° | 56° | — | — |
| 2000warmest | 88° | 56° | 72° | — | — |
| 1999 | 57° | 45° | 51° | 0.13" | — |
| 1998 | 63° | 45° | 54° | 0.03" | — |
| 1984 | 90° | 44° | 67° | — | — |
| 1983coldest | 56° | 42° | 49° | — | — |
| 1982 | 66° | 51° | 59° | 1.02" | — |
| 1981 | 74° | 54° | 64° | — | — |
| 1980 | 82° | 51° | 67° | — | — |
| 1979 | 79° | 44° | 61° | — | — |
| 1978 | 69° | 53° | 61° | — | — |
| 1977 | 80° | 41° | 61° | — | — |
| 1976 | 60° | 43° | 51° | — | — |
| 1975 | 65° | 39° | 52° | — | — |
| 1974 | 76° | 46° | 61° | — | — |
| 1973 | 77° | 44° | 61° | — | — |
| 1972 | 76° | 43° | 59° | — | — |
| 1971 | 79° | 43° | 61° | — | — |
42 years of data from ONTARIO INTL AP