Weather on May 16
Rancho Cucamonga, CA
55 Years of Data
Avg High
77°F
Avg Low
54°F
Warmest
2008
82°F avg
Coldest
1975
55°F avg
About This Date
May 16th in Rancho Cucamonga, CA typically brings pleasant spring weather, with average highs around 77°F and lows near 54°F. Over 41 years of records, the warmest May 16th was in 2008 (82°F average), while the coldest was 1975 (55°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 7% of May 16th dates historically, with the wettest May 16th recording 0.89" 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 May 16th in Rancho Cucamonga, CA? Great weather for outdoor activities.
Warming Trend
1.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 79° | 54° | 66° | — | — |
| 2024 | 70° | 55° | 62° | — | — |
| 2023 | 85° | 57° | 71° | — | — |
| 2022 | 80° | 56° | 68° | — | — |
| 2021 | 64° | 55° | 60° | — | — |
| 2020 | 89° | 61° | 75° | — | — |
| 2019 | 71° | 57° | 64° | 0.89" | — |
| 2018 | 79° | 53° | 66° | — | — |
| 2017 | 65° | 52° | 58° | — | — |
| 2016 | 71° | 58° | 64° | — | — |
| 2015 | 70° | 52° | 61° | — | — |
| 2014 | 98° | 67° | 82° | — | — |
| 2013 | 78° | 58° | 68° | — | — |
| 2012 | 91° | 59° | 75° | — | — |
| 2011 | 65° | 46° | 55° | — | — |
| 2010 | 79° | 55° | 67° | — | — |
| 2009 | 92° | 58° | 75° | — | — |
| 2008warmest | 100° | 64° | 82° | — | — |
| 2007 | 76° | 55° | 65° | — | — |
| 2006 | 87° | 56° | 71° | — | — |
| 2005 | 71° | 58° | 64° | — | — |
| 2004 | 82° | 56° | 69° | — | — |
| 2003 | 87° | 53° | 70° | — | — |
| 2002 | 72° | 56° | 64° | — | — |
| 2001 | 80° | 56° | 68° | — | — |
| 2000 | 68° | 51° | 60° | — | — |
| 1999 | 76° | 53° | 64° | — | — |
| 1984 | 87° | 43° | 65° | — | — |
| 1983 | 77° | 55° | 66° | — | — |
| 1982 | 89° | 49° | 69° | — | — |
| 1981 | 67° | 53° | 60° | — | — |
| 1980 | 79° | 47° | 63° | — | — |
| 1979 | 74° | 52° | 63° | — | — |
| 1978 | 80° | 51° | 66° | — | — |
| 1977 | 60° | 50° | 55° | 0.05" | — |
| 1976 | 81° | 49° | 65° | — | — |
| 1975coldest | 60° | 50° | 55° | — | — |
| 1974 | 60° | 51° | 56° | 0.28" | — |
| 1973 | 83° | 50° | 66° | — | — |
| 1972 | 79° | 53° | 66° | — | — |
| 1971 | 75° | 49° | 62° | — | — |
41 years of data from ONTARIO INTL AP