Weather on April 15
Rancho Cucamonga, CA
55 Years of Data
Avg High
74°F
Avg Low
48°F
Warmest
1984
72°F avg
Coldest
1973
48°F avg
About This Date
April 15th in Rancho Cucamonga, CA typically brings pleasant spring weather, with average highs around 74°F and lows near 48°F — a 26°F daily swing. Over 41 years of records, the warmest April 15th was in 1984 (72°F average), while the coldest was 1973 (48°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 15% of April 15th dates historically, with the wettest April 15th recording 1.27" 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 15th in Rancho Cucamonga, CA? Great weather for outdoor activities.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 66° | 52° | 59° | — | — |
| 2024 | 68° | 47° | 57° | — | — |
| 2023 | 79° | 47° | 63° | — | — |
| 2022 | 74° | 49° | 61° | — | — |
| 2021 | 72° | 48° | 60° | — | — |
| 2020 | 82° | 50° | 66° | — | — |
| 2019 | 76° | 55° | 65° | — | — |
| 2018 | 82° | 54° | 68° | — | — |
| 2017 | 80° | 50° | 65° | — | — |
| 2016 | 79° | 50° | 64° | — | — |
| 2015 | 81° | 50° | 65° | — | — |
| 2014 | 84° | 57° | 71° | — | — |
| 2013 | 62° | 52° | 57° | — | — |
| 2012 | 71° | 40° | 55° | — | — |
| 2011 | 86° | 50° | 68° | — | — |
| 2010 | 77° | 49° | 63° | — | — |
| 2009 | 61° | 41° | 51° | — | — |
| 2008 | 70° | 50° | 60° | — | — |
| 2007 | 59° | 48° | 54° | — | — |
| 2006 | 65° | 51° | 58° | 0.05" | — |
| 2005 | 84° | 51° | 68° | — | — |
| 2004 | 75° | 51° | 63° | — | — |
| 2003 | 63° | 45° | 54° | 0.1" | — |
| 2002 | 69° | 52° | 60° | 0.08" | — |
| 2001 | 74° | 47° | 60° | — | — |
| 2000 | 66° | 51° | 59° | — | — |
| 1999 | 88° | 50° | 69° | — | — |
| 1984warmest | 96° | 49° | 72° | — | — |
| 1983 | 75° | 38° | 56° | — | — |
| 1982 | 64° | 51° | 58° | — | — |
| 1981 | 78° | 45° | 61° | — | — |
| 1980 | 83° | 45° | 64° | — | — |
| 1979 | 81° | 48° | 64° | — | — |
| 1978 | 61° | 50° | 55° | 1.14" | — |
| 1977 | 78° | 44° | 61° | — | — |
| 1976 | 55° | 43° | 49° | 1.27" | — |
| 1975 | 56° | 45° | 50° | 0.23" | — |
| 1974 | 86° | 46° | 66° | — | — |
| 1973coldest | 59° | 38° | 48° | — | — |
| 1972 | 79° | 41° | 60° | — | — |
| 1971 | 72° | 47° | 59° | — | — |
41 years of data from ONTARIO INTL AP