Weather on May 25
Rancho Cucamonga, CA
55 Years of Data
Avg High
78°F
Avg Low
55°F
Warmest
2021
78°F avg
Coldest
1980
54°F avg
About This Date
May 25th in Rancho Cucamonga, CA typically brings pleasant spring weather, with average highs around 78°F and lows near 55°F. Over 42 years of records, the warmest May 25th was in 2021 (78°F average), while the coldest was 1980 (54°F) — a 24°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 1.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.3°F warmer on this date compared to 20-30 years ago.
Planning for May 25th in Rancho Cucamonga, CA? Great weather for outdoor activities.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 78° | 58° | 68° | — | — |
| 2024 | 71° | 54° | 62° | — | — |
| 2023 | 71° | 56° | 63° | — | — |
| 2022 | 86° | 57° | 72° | — | — |
| 2021warmest | 92° | 64° | 78° | — | — |
| 2020 | 92° | 56° | 74° | — | — |
| 2019 | 77° | 55° | 66° | — | — |
| 2018 | 72° | 55° | 63° | — | — |
| 2017 | 72° | 56° | 64° | — | — |
| 2016 | 70° | 54° | 62° | — | — |
| 2015 | 73° | 53° | 63° | — | — |
| 2014 | 86° | 60° | 73° | — | — |
| 2013 | 78° | 56° | 67° | — | — |
| 2012 | 71° | 53° | 62° | — | — |
| 2011 | 80° | 54° | 67° | — | — |
| 2010 | 75° | 48° | 62° | — | — |
| 2009 | 77° | 58° | 67° | — | — |
| 2008 | 66° | 49° | 57° | — | — |
| 2007 | 84° | 57° | 71° | — | — |
| 2006 | 88° | 60° | 74° | — | — |
| 2005 | 88° | 58° | 73° | — | — |
| 2004 | 71° | 57° | 64° | — | — |
| 2003 | 71° | 56° | 63° | — | — |
| 2002 | 77° | 53° | 65° | — | — |
| 2001 | 85° | 60° | 72° | — | — |
| 2000 | 65° | 58° | 61° | — | — |
| 1999 | 81° | 54° | 67° | — | — |
| 1998 | 67° | 58° | 62° | — | — |
| 1984 | 92° | 54° | 73° | — | — |
| 1983 | 86° | 57° | 72° | — | — |
| 1982 | 79° | 59° | 69° | — | — |
| 1981 | 82° | 59° | 71° | — | — |
| 1980coldest | 69° | 39° | 54° | — | — |
| 1979 | 83° | 55° | 69° | — | — |
| 1978 | 72° | 42° | 57° | — | — |
| 1977 | 66° | 48° | 57° | — | — |
| 1976 | 71° | 54° | 62° | — | — |
| 1975 | 80° | 49° | 64° | — | — |
| 1974 | 99° | 55° | 77° | — | — |
| 1973 | 70° | 48° | 59° | — | — |
| 1972 | 69° | 52° | 60° | — | — |
| 1971 | 84° | 52° | 68° | — | — |
42 years of data from ONTARIO INTL AP