Weather on August 15
Riverside, CA
55 Years of Data
Avg High
94°F
Avg Low
64°F
Warmest
2020
92°F avg
Coldest
1975
70°F avg
About This Date
August 15th in Riverside, CA typically brings hot summer weather, with average highs around 94°F and lows near 64°F — a 30°F daily swing. Over 55 years of records, the warmest August 15th was in 2020 (92°F average), while the coldest was 1975 (70°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 2% of August 15th dates historically. 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 August 15th in Riverside, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 88° | 63° | 75° | — | — |
| 2024 | 98° | 66° | 82° | — | — |
| 2023 | 102° | 67° | 84° | — | — |
| 2022 | 100° | 68° | 84° | — | — |
| 2021 | 99° | 70° | 84° | — | — |
| 2020warmest | 109° | 75° | 92° | — | — |
| 2019 | 102° | 63° | 82° | — | — |
| 2018 | 93° | 66° | 80° | — | — |
| 2017 | 80° | 63° | 71° | — | — |
| 2016 | 107° | 72° | 89° | — | — |
| 2015 | 108° | 73° | 90° | — | — |
| 2014 | 98° | 66° | 82° | — | — |
| 2013 | 99° | 65° | 82° | — | — |
| 2012 | 96° | 69° | 83° | — | — |
| 2011 | 95° | 61° | 78° | — | — |
| 2010 | 96° | 59° | 78° | — | — |
| 2009 | 87° | 62° | 75° | — | — |
| 2008 | 94° | 68° | 81° | — | — |
| 2007 | 103° | 70° | 86° | — | — |
| 2006 | 86° | 58° | 72° | — | — |
| 2005 | 80° | 63° | 71° | — | — |
| 2004 | 91° | 64° | 78° | — | — |
| 2003 | 101° | 68° | 84° | — | — |
| 2002 | 89° | 59° | 74° | — | — |
| 2001 | 101° | 62° | 81° | — | — |
| 2000 | 100° | 68° | 84° | — | — |
| 1999 | 91° | 59° | 75° | — | — |
| 1998 | 93° | 67° | 80° | — | — |
| 1997 | 88° | 63° | 75° | — | — |
| 1996 | 104° | 74° | 89° | — | — |
| 1995 | 95° | — | — | — | — |
| 1994 | 105° | 72° | 88° | — | — |
| 1993 | 84° | 60° | 72° | — | — |
| 1992 | 104° | 73° | 89° | — | — |
| 1991 | 89° | 63° | 76° | — | — |
| 1990 | 82° | 66° | 74° | — | — |
| 1989 | 95° | 63° | 79° | — | — |
| 1988 | 94° | 56° | 75° | — | — |
| 1987 | 82° | 62° | 72° | — | — |
| 1986 | 94° | 56° | 75° | — | — |
| 1985 | 94° | 56° | 75° | — | — |
| 1984 | 94° | 72° | 83° | — | — |
| 1983 | 100° | 73° | 87° | 0.03" | — |
| 1982 | 89° | 57° | 73° | — | — |
| 1981 | 97° | 71° | 84° | — | — |
| 1980 | 85° | 65° | 75° | — | — |
| 1979 | 89° | 60° | 75° | — | — |
| 1978 | 94° | 60° | 77° | — | — |
| 1977 | 104° | 63° | 83° | — | — |
| 1976 | 79° | 61° | 70° | — | — |
| 1975coldest | 85° | 56° | 70° | — | — |
| 1974 | 90° | 58° | 74° | — | — |
| 1973 | 96° | 64° | 80° | — | — |
| 1972 | 85° | 59° | 72° | — | — |
| 1971 | 94° | 63° | 78° | — | — |
55 years of data from RIVERSIDE MUNI AP