Weather on May 15
Riverside, CA
55 Years of Data
Avg High
80°F
Avg Low
54°F
Warmest
2014
82°F avg
Coldest
2011
58°F avg
About This Date
May 15th in Riverside, CA typically brings warm spring weather, with average highs around 80°F and lows near 54°F — a 26°F daily swing. Over 55 years of records, the warmest May 15th was in 2014 (82°F average), while the coldest was 2011 (58°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 4% of May 15th dates historically. 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 15th in Riverside, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 81° | 53° | 67° | — | — |
| 2024 | 72° | 55° | 63° | — | — |
| 2023 | 84° | 57° | 71° | — | — |
| 2022 | 91° | 61° | 76° | — | — |
| 2021 | 72° | 57° | 64° | — | — |
| 2020 | 83° | 55° | 69° | — | — |
| 2019 | 74° | 57° | 65° | — | — |
| 2018 | 77° | 52° | 64° | — | — |
| 2017 | 68° | 51° | 60° | — | — |
| 2016 | 70° | 60° | 65° | — | — |
| 2015 | 66° | 51° | 59° | 0.3" | — |
| 2014warmest | 103° | 62° | 82° | — | — |
| 2013 | 82° | 56° | 69° | — | — |
| 2012 | 84° | 53° | 69° | — | — |
| 2011coldest | 66° | 50° | 58° | 0.1" | — |
| 2010 | 85° | 53° | 69° | — | — |
| 2009 | 87° | 57° | 72° | — | — |
| 2008 | 100° | 53° | 77° | — | — |
| 2007 | 77° | 54° | 65° | — | — |
| 2006 | 84° | 57° | 71° | — | — |
| 2005 | 90° | 54° | 72° | — | — |
| 2004 | 89° | 54° | 71° | — | — |
| 2003 | 76° | 50° | 63° | — | — |
| 2002 | 77° | 54° | 65° | — | — |
| 2001 | 81° | 52° | 66° | — | — |
| 2000 | 77° | 50° | 64° | — | — |
| 1999 | 70° | 53° | 61° | — | — |
| 1998 | 74° | 47° | 60° | — | — |
| 1997 | 96° | 60° | 78° | — | — |
| 1996 | 85° | 61° | 73° | — | — |
| 1995 | 71° | 48° | 60° | — | — |
| 1994 | 65° | 58° | 61° | — | — |
| 1993 | 90° | 62° | 76° | — | — |
| 1992 | 79° | 60° | 69° | — | — |
| 1991 | 88° | 50° | 69° | — | — |
| 1990 | 75° | 57° | 66° | — | — |
| 1989 | 65° | 56° | 60° | — | — |
| 1988 | 88° | 57° | 72° | — | — |
| 1987 | 80° | 61° | 70° | — | — |
| 1986 | 73° | 54° | 63° | — | — |
| 1985 | 86° | 49° | 67° | — | — |
| 1984 | 76° | 52° | 64° | — | — |
| 1983 | 80° | 50° | 65° | — | — |
| 1982 | 81° | 49° | 65° | — | — |
| 1981 | 74° | 56° | 65° | — | — |
| 1980 | 70° | 53° | 61° | — | — |
| 1979 | 89° | 50° | 70° | — | — |
| 1978 | 83° | 58° | 70° | — | — |
| 1977 | 68° | 55° | 62° | — | — |
| 1976 | 89° | 52° | 70° | — | — |
| 1975 | 76° | 54° | 65° | — | — |
| 1974 | 73° | 56° | 64° | — | — |
| 1973 | 81° | 53° | 67° | — | — |
| 1972 | 92° | 54° | 73° | — | — |
| 1971 | 80° | 51° | 66° | — | — |
55 years of data from RIVERSIDE MUNI AP