Weather on May 9
Riverside, CA
55 Years of Data
Avg High
80°F
Avg Low
53°F
Warmest
2025
80°F avg
Coldest
1977
54°F avg
About This Date
May 9th in Riverside, CA typically brings warm spring weather, with average highs around 80°F and lows near 53°F — a 27°F daily swing. Over 55 years of records, the warmest May 9th was in 2025 (80°F average), while the coldest was 1977 (54°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 4% of May 9th dates historically, with the wettest May 9th recording 1.4" of rain. The last decade has been 1.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.0°F warmer on this date compared to 20-30 years ago.
Planning for May 9th in Riverside, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025warmest | 101° | 60° | 80° | — | — |
| 2024 | 84° | 52° | 68° | — | — |
| 2023 | 73° | 50° | 62° | — | — |
| 2022 | 71° | 53° | 62° | — | — |
| 2021 | 75° | 55° | 65° | — | — |
| 2020 | 86° | 59° | 73° | — | — |
| 2019 | 66° | 56° | 61° | — | — |
| 2018 | 88° | 56° | 72° | — | — |
| 2017 | 73° | 53° | 63° | — | — |
| 2016 | 74° | 57° | 65° | — | — |
| 2015 | 68° | 55° | 62° | — | — |
| 2014 | 77° | 53° | 65° | — | — |
| 2013 | 78° | 52° | 65° | — | — |
| 2012 | 92° | 57° | 74° | — | — |
| 2011 | 69° | 53° | 61° | — | — |
| 2010 | 72° | 52° | 62° | — | — |
| 2009 | 86° | 56° | 71° | — | — |
| 2008 | 67° | 51° | 59° | — | — |
| 2007 | 93° | 55° | 74° | — | — |
| 2006 | 73° | 57° | 65° | — | — |
| 2005 | 69° | 50° | 60° | — | — |
| 2004 | 88° | 52° | 70° | — | — |
| 2003 | 70° | 46° | 58° | — | — |
| 2002 | 81° | 48° | 64° | — | — |
| 2001 | 92° | 55° | 73° | — | — |
| 2000 | 82° | 55° | 69° | — | — |
| 1999 | 68° | 55° | 62° | — | — |
| 1998 | 72° | 50° | 61° | — | — |
| 1997 | 93° | 57° | 75° | — | — |
| 1996 | 82° | 55° | 69° | — | — |
| 1995 | 76° | 46° | 61° | — | — |
| 1994 | 75° | 51° | 63° | — | — |
| 1993 | 96° | 56° | 76° | — | — |
| 1992 | 75° | 61° | 68° | — | — |
| 1991 | 77° | 55° | 66° | — | — |
| 1990 | 80° | 54° | 67° | — | — |
| 1989 | 82° | 59° | 71° | — | — |
| 1988 | 85° | 48° | 66° | — | — |
| 1987 | 88° | 62° | 75° | — | — |
| 1986 | 88° | 44° | 66° | — | — |
| 1985 | 72° | 53° | 62° | — | — |
| 1984 | 98° | 55° | 77° | — | — |
| 1983 | 76° | 54° | 65° | — | — |
| 1982 | 67° | 52° | 59° | 0.13" | — |
| 1981 | 97° | 54° | 75° | — | — |
| 1980 | 75° | 56° | 65° | — | — |
| 1979 | 75° | 43° | 59° | — | — |
| 1978 | 89° | 53° | 71° | — | — |
| 1977coldest | 60° | 49° | 54° | 1.4" | — |
| 1976 | 86° | 52° | 69° | — | — |
| 1975 | 87° | 48° | 68° | — | — |
| 1974 | 70° | 57° | 63° | — | — |
| 1973 | 91° | 51° | 71° | — | — |
| 1972 | 76° | 47° | 61° | — | — |
| 1971 | 77° | 47° | 62° | — | — |
55 years of data from RIVERSIDE MUNI AP