Weather on April 13
Ontario, CA
55 Years of Data
Avg High
73°F
Avg Low
48°F
Warmest
1984
74°F avg
Coldest
1976
47°F avg
About This Date
April 13th in Ontario, CA typically brings pleasant spring weather, with average highs around 73°F and lows near 48°F — a 25°F daily swing. Over 42 years of records, the warmest April 13th was in 1984 (74°F average), while the coldest was 1976 (47°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 17% of April 13th dates historically, with the wettest April 13th recording 1.5" of rain. The last decade has been 1.1°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.1°F cooler on this date compared to 20-30 years ago.
Planning for April 13th 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 | 77° | 54° | 65° | — | — |
| 2024 | 64° | 46° | 55° | 0.3" | — |
| 2023 | 58° | 51° | 54° | 0.03" | — |
| 2022 | 71° | 43° | 57° | — | — |
| 2021 | 64° | 54° | 59° | — | — |
| 2020 | 62° | 52° | 57° | — | — |
| 2019 | 85° | 52° | 68° | — | — |
| 2018 | 82° | 46° | 64° | — | — |
| 2017 | 71° | 52° | 61° | — | — |
| 2016 | 77° | 52° | 64° | — | — |
| 2015 | 82° | 54° | 68° | — | — |
| 2014 | 71° | 54° | 62° | — | — |
| 2013 | 69° | 54° | 61° | — | — |
| 2012 | 57° | 44° | 51° | 1.5" | — |
| 2011 | 65° | 48° | 56° | — | — |
| 2010 | 66° | 45° | 55° | — | — |
| 2009 | 79° | 51° | 65° | — | — |
| 2008 | 96° | 52° | 74° | — | — |
| 2007 | 80° | 46° | 63° | — | — |
| 2006 | 89° | 50° | 70° | — | — |
| 2005 | 76° | 51° | 63° | — | — |
| 2004 | 80° | 50° | 65° | — | — |
| 2003 | 69° | 54° | 61° | 0.03" | — |
| 2002 | 93° | 52° | 72° | — | — |
| 2001 | 73° | 46° | 60° | — | — |
| 2000 | 80° | 53° | 67° | — | — |
| 1999 | 64° | 49° | 56° | — | — |
| 1998 | 58° | 38° | 48° | 0.03" | — |
| 1984warmest | 100° | 48° | 74° | — | — |
| 1983 | 63° | 32° | 47° | — | — |
| 1982 | 65° | 43° | 54° | — | — |
| 1981 | 77° | 43° | 60° | — | — |
| 1980 | 85° | 48° | 66° | — | — |
| 1979 | 82° | 53° | 68° | — | — |
| 1978 | 62° | 49° | 55° | — | — |
| 1977 | 74° | 45° | 59° | — | — |
| 1976coldest | 52° | 42° | 47° | 1.07" | — |
| 1975 | 63° | 45° | 54° | — | — |
| 1974 | 81° | 45° | 63° | — | — |
| 1973 | 63° | 45° | 54° | — | — |
| 1972 | 64° | 46° | 55° | 0.08" | — |
| 1971 | 77° | 46° | 62° | — | — |
42 years of data from ONTARIO INTL AP