Weather on May 31
Riverside, CA
55 Years of Data
About This Date
May 31st in Riverside, CA typically brings warm spring weather, with average highs around 83°F and lows near 56°F — a 27°F daily swing. Over 55 years of records, the warmest May 31st was in 2025 (80°F average), while the coldest was 1980 (58°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 4% of May 31st dates historically. The last decade has been 2.8°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.8°F cooler on this date compared to 20-30 years ago.
Planning for May 31st in Riverside, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025warmest | 98° | 62° | 80° | — | — |
| 2024 | 81° | 56° | 68° | — | — |
| 2023 | 66° | 56° | 61° | — | — |
| 2022 | 83° | 55° | 69° | — | — |
| 2021 | 86° | 56° | 71° | — | — |
| 2020 | 87° | 56° | 71° | — | — |
| 2019 | 81° | 56° | 68° | — | — |
| 2018 | 77° | 58° | 67° | — | — |
| 2017 | 74° | 60° | 67° | — | — |
| 2016 | 83° | 55° | 69° | — | — |
| 2015 | 84° | 58° | 71° | — | — |
| 2014 | 91° | 59° | 75° | — | — |
| 2013 | 88° | 61° | 74° | — | — |
| 2012 | 94° | 57° | 75° | — | — |
| 2011 | 85° | 51° | 68° | — | — |
| 2010 | 85° | 56° | 70° | — | — |
| 2009 | 80° | 59° | 70° | — | — |
| 2008 | 77° | 52° | 64° | — | — |
| 2007 | 83° | 51° | 67° | — | — |
| 2006 | 98° | 57° | 78° | — | — |
| 2005 | 84° | 58° | 71° | — | — |
| 2004 | 96° | 55° | 76° | — | — |
| 2003 | 87° | 59° | 73° | — | — |
| 2002 | 89° | 57° | 73° | — | — |
| 2001 | 96° | 58° | 77° | — | — |
| 2000 | 86° | 59° | 73° | — | — |
| 1999 | 79° | 53° | 66° | — | — |
| 1998 | 82° | 50° | 66° | — | — |
| 1997 | 93° | 60° | 77° | — | — |
| 1996 | 84° | 50° | 67° | — | — |
| 1995 | 92° | 56° | 74° | — | — |
| 1994 | 81° | 55° | 68° | — | — |
| 1993 | 80° | 58° | 69° | — | — |
| 1992 | 93° | 59° | 76° | — | — |
| 1991 | 71° | 52° | 61° | — | — |
| 1990 | 74° | 55° | 64° | — | — |
| 1989 | 91° | 40° | 65° | — | — |
| 1988 | 83° | 45° | 64° | — | — |
| 1987 | 90° | 53° | 71° | — | — |
| 1986 | 83° | 56° | 69° | — | — |
| 1985 | 74° | 55° | 64° | — | — |
| 1984 | 87° | 62° | 75° | 0.05" | — |
| 1983 | 68° | 59° | 64° | 0.05" | — |
| 1982 | 71° | 47° | 59° | — | — |
| 1981 | 85° | 62° | 73° | — | — |
| 1980coldest | 63° | 53° | 58° | — | — |
| 1979 | 78° | 57° | 68° | — | — |
| 1978 | 95° | 56° | 75° | — | — |
| 1977 | 93° | 57° | 75° | — | — |
| 1976 | 75° | 51° | 63° | — | — |
| 1975 | 87° | 55° | 71° | — | — |
| 1974 | 74° | 58° | 66° | — | — |
| 1973 | 82° | 59° | 71° | — | — |
| 1972 | 97° | 62° | 79° | — | — |
| 1971 | 65° | 53° | 59° | — | — |
Riverside, CA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Riverside, CA Monthly Precipitation
Average rainfall per month, in inches.
Riverside, CA Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Riverside, CA
Riverside, CA has no months that meet our "pleasant" threshold — every season has tradeoffs.