Weather on April 1
Rancho Cucamonga, CA
55 Years of Data
Avg High
71°F
Avg Low
47°F
Warmest
2011
75°F avg
Coldest
1977
47°F avg
About This Date
April 1st in Rancho Cucamonga, 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 1st was in 2011 (75°F average), while the coldest was 1977 (47°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 21% of April 1st dates historically, with the wettest April 1st recording 3.51" of rain. The last decade has been 3.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.2°F warmer on this date compared to 20-30 years ago.
Planning for April 1st in Rancho Cucamonga, CA? Great weather for outdoor activities.
Warming Trend
1.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 73° | 58° | 65° | 0.53" | — |
| 2025 | 66° | 50° | 58° | — | — |
| 2024 | 71° | 43° | 57° | — | — |
| 2023 | 72° | 45° | 58° | — | — |
| 2022 | 72° | 55° | 63° | — | — |
| 2021 | 87° | 51° | 69° | — | — |
| 2020 | 75° | 54° | 64° | — | — |
| 2019 | 87° | 60° | 74° | — | — |
| 2018 | 74° | 53° | 63° | — | — |
| 2017 | 79° | 43° | 61° | — | — |
| 2016 | 78° | 47° | 62° | — | — |
| 2015 | 77° | 55° | 66° | — | — |
| 2014 | 63° | 48° | 55° | 0.33" | — |
| 2013 | 66° | 54° | 60° | — | — |
| 2012 | 66° | 43° | 54° | — | — |
| 2011warmest | 91° | 59° | 75° | — | — |
| 2010 | 63° | 45° | 54° | — | — |
| 2009 | 72° | 46° | 59° | — | — |
| 2008 | 66° | 45° | 55° | — | — |
| 2007 | 82° | 49° | 65° | — | — |
| 2006 | 63° | 47° | 55° | 0.38" | — |
| 2005 | 82° | 45° | 63° | — | — |
| 2004 | 61° | 50° | 55° | 0.58" | — |
| 2003 | 76° | 50° | 63° | — | — |
| 2002 | 77° | 49° | 63° | — | — |
| 2001 | 63° | 55° | 59° | — | — |
| 2000 | 82° | 55° | 69° | — | — |
| 1999 | 55° | 39° | 47° | 0.84" | — |
| 1984 | 64° | 35° | 50° | 0.15" | — |
| 1983 | 80° | 48° | 64° | — | — |
| 1982 | 59° | 45° | 52° | 3.51" | — |
| 1981 | 67° | 42° | 54° | — | — |
| 1980 | 66° | 39° | 53° | 0.3" | — |
| 1979 | 72° | 42° | 57° | — | — |
| 1978 | 66° | 45° | 55° | 0.3" | — |
| 1977coldest | 56° | 39° | 47° | — | — |
| 1976 | 77° | 43° | 60° | — | — |
| 1975 | 61° | 38° | 49° | — | — |
| 1974 | 64° | 40° | 52° | — | — |
| 1973 | 63° | 45° | 54° | — | — |
| 1972 | 79° | 48° | 63° | — | — |
| 1971 | 82° | 44° | 63° | — | — |
42 years of data from ONTARIO INTL AP