Weather on August 26
Rancho Cucamonga, CA
55 Years of Data
Avg High
94°F
Avg Low
65°F
Warmest
2010
90°F avg
Coldest
1973
65°F avg
About This Date
August 26th in Rancho Cucamonga, CA typically brings hot summer weather, with average highs around 94°F and lows near 65°F — a 29°F daily swing. Over 42 years of records, the warmest August 26th was in 2010 (90°F average), while the coldest was 1973 (65°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 2% of August 26th dates historically, with the wettest August 26th recording 0.56" 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 August 26th in Rancho Cucamonga, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 93° | 69° | 81° | — | — |
| 2024 | 94° | 64° | 79° | — | — |
| 2023 | 98° | 64° | 81° | — | — |
| 2022 | 96° | 67° | 81° | — | — |
| 2021 | 103° | 72° | 87° | — | — |
| 2020 | 101° | 72° | 86° | — | — |
| 2019 | 99° | 72° | 85° | — | — |
| 2018 | 89° | 65° | 77° | — | — |
| 2017 | 102° | 64° | 83° | — | — |
| 2016 | 84° | 61° | 72° | — | — |
| 2015 | 100° | 75° | 88° | — | — |
| 2014 | 93° | 65° | 79° | — | — |
| 2013 | 92° | 74° | 83° | — | — |
| 2012 | 91° | 62° | 77° | — | — |
| 2011 | 104° | 73° | 89° | — | — |
| 2010warmest | 104° | 75° | 90° | — | — |
| 2009 | 103° | 66° | 84° | — | — |
| 2008 | 96° | 68° | 82° | — | — |
| 2007 | 88° | 67° | 77° | — | — |
| 2006 | 91° | 59° | 75° | — | — |
| 2005 | 100° | 71° | 86° | — | — |
| 2004 | 86° | 61° | 73° | — | — |
| 2003 | 97° | 70° | 83° | — | — |
| 2002 | 92° | 62° | 77° | — | — |
| 2001 | 99° | 65° | 82° | — | — |
| 2000 | 92° | 65° | 78° | — | — |
| 1999 | 100° | 71° | 86° | — | — |
| 1998 | 93° | 64° | 79° | — | — |
| 1984 | 100° | 63° | 81° | — | — |
| 1983 | 100° | 57° | 79° | — | — |
| 1982 | 94° | 66° | 80° | — | — |
| 1981 | 106° | 71° | 88° | — | — |
| 1980 | 95° | 57° | 76° | — | — |
| 1979 | 95° | 58° | 76° | — | — |
| 1978 | 83° | 52° | 67° | — | — |
| 1977 | 80° | 59° | 70° | — | — |
| 1976 | 94° | 59° | 76° | — | — |
| 1975 | 86° | 51° | 69° | — | — |
| 1974 | 94° | 58° | 76° | — | — |
| 1973coldest | 75° | 56° | 65° | — | — |
| 1972 | 81° | 62° | 71° | 0.56" | — |
| 1971 | 98° | 57° | 78° | — | — |
42 years of data from ONTARIO INTL AP