Weather on May 13
Rancho Cucamonga, CA
55 Years of Data
Avg High
82°F
Avg Low
54°F
Warmest
2013
86°F avg
Coldest
1983
54°F avg
About This Date
May 13th in Rancho Cucamonga, CA typically brings warm spring weather, with average highs around 82°F and lows near 54°F — a 28°F daily swing. Over 41 years of records, the warmest May 13th was in 2013 (86°F average), while the coldest was 1983 (54°F) — a 32°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 1.7°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.7°F cooler on this date compared to 20-30 years ago.
Planning for May 13th in Rancho Cucamonga, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 69° | 54° | 61° | — | — |
| 2024 | 78° | 55° | 67° | — | — |
| 2023 | 87° | 54° | 70° | — | — |
| 2022 | 93° | 55° | 74° | — | — |
| 2021 | 80° | 55° | 68° | — | — |
| 2020 | 75° | 55° | 65° | — | — |
| 2019 | 78° | 62° | 70° | — | — |
| 2018 | 71° | 55° | 63° | — | — |
| 2017 | 77° | 56° | 66° | — | — |
| 2016 | 88° | 57° | 72° | — | — |
| 2015 | 72° | 52° | 62° | — | — |
| 2014 | 93° | 57° | 75° | — | — |
| 2013warmest | 103° | 69° | 86° | — | — |
| 2012 | 85° | 54° | 69° | — | — |
| 2011 | 79° | 56° | 67° | — | — |
| 2010 | 79° | 56° | 67° | — | — |
| 2009 | 81° | 55° | 68° | — | — |
| 2008 | 84° | 51° | 68° | — | — |
| 2007 | 80° | 51° | 66° | — | — |
| 2006 | 82° | 59° | 71° | — | — |
| 2005 | 90° | 58° | 74° | — | — |
| 2004 | 87° | 55° | 71° | — | — |
| 2003 | 77° | 59° | 68° | — | — |
| 2002 | 95° | 59° | 77° | — | — |
| 2001 | 75° | 55° | 65° | — | — |
| 2000 | 85° | 49° | 67° | — | — |
| 1999 | 70° | 56° | 63° | — | — |
| 1984 | 95° | 53° | 74° | — | — |
| 1983coldest | 63° | 46° | 54° | — | — |
| 1982 | 74° | 48° | 61° | — | — |
| 1981 | 77° | 55° | 66° | — | — |
| 1980 | 70° | 43° | 56° | — | — |
| 1979 | 97° | 58° | 77° | — | — |
| 1978 | 96° | 62° | 79° | — | — |
| 1977 | 66° | 44° | 55° | — | — |
| 1976 | 98° | 58° | 78° | — | — |
| 1975 | 84° | 49° | 66° | — | — |
| 1974 | 67° | 52° | 59° | — | — |
| 1973 | 69° | 48° | 59° | — | — |
| 1972 | 99° | 57° | 78° | — | — |
| 1971 | 81° | 50° | 65° | — | — |
41 years of data from ONTARIO INTL AP