Weather on May 23
Rialto, CA
55 Years of Data
Avg High
78°F
Avg Low
53°F
Warmest
2001
85°F avg
Coldest
2008
48°F avg
About This Date
May 23rd in Rialto, CA typically brings pleasant spring weather, with average highs around 78°F and lows near 53°F — a 25°F daily swing. Over 48 years of records, the warmest May 23rd was in 2001 (85°F average), while the coldest was 2008 (48°F) — a 37°F range across recorded history. Rain or other precipitation has occurred on about 4% of May 23rd dates historically.
Planning for May 23rd in Rialto, CA? Great weather for outdoor activities.
Cooling Trend
1.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 86° | 59° | 73° | — | — |
| 2017 | 94° | 65° | 79° | — | — |
| 2016 | 68° | 46° | 57° | — | — |
| 2015 | 60° | 51° | 56° | — | — |
| 2014 | 72° | 55° | 63° | — | — |
| 2013 | 69° | 55° | 62° | — | — |
| 2012 | 77° | 56° | 66° | — | — |
| 2011 | 58° | 51° | 54° | — | — |
| 2010 | 56° | 41° | 48° | — | — |
| 2009 | 79° | 51° | 65° | — | — |
| 2008coldest | 51° | 45° | 48° | — | — |
| 2007 | 86° | 50° | 68° | — | — |
| 2006 | 75° | 50° | 63° | — | — |
| 2005 | 90° | 58° | 74° | — | — |
| 2004 | 67° | 54° | 60° | — | — |
| 2003 | 84° | 53° | 69° | — | — |
| 2002 | 81° | 49° | 65° | — | — |
| 2001warmest | 101° | 70° | 85° | — | — |
| 2000 | 82° | 59° | 71° | — | — |
| 1999 | 72° | 49° | 60° | — | — |
| 1998 | 68° | 49° | 58° | — | — |
| 1997 | 78° | 56° | 67° | — | — |
| 1996 | 75° | 48° | 62° | — | — |
| 1995 | 56° | 50° | 53° | — | — |
| 1994 | 84° | 55° | 70° | — | — |
| 1993 | 64° | 53° | 59° | — | — |
| 1992 | 78° | 52° | 65° | — | — |
| 1991 | 80° | 50° | 65° | — | — |
| 1990 | 83° | 56° | 69° | — | — |
| 1989 | 84° | 52° | 68° | — | — |
| 1988 | 88° | 60° | 74° | — | — |
| 1987 | 71° | 49° | 60° | — | — |
| 1986 | 77° | 53° | 65° | — | — |
| 1985 | 92° | 58° | 75° | — | — |
| 1984 | 94° | 58° | 76° | — | — |
| 1983 | 92° | 58° | 75° | — | — |
| 1982 | 86° | 59° | 73° | — | — |
| 1981 | 84° | 54° | 69° | — | — |
| 1980 | 68° | 54° | 61° | — | — |
| 1979 | 93° | 60° | 77° | — | — |
| 1978 | 75° | 55° | 65° | 0.03" | — |
| 1977 | 73° | 55° | 64° | 0.23" | — |
| 1976 | 83° | 49° | 66° | — | — |
| 1975 | 83° | 48° | 65° | — | — |
| 1974 | 84° | 52° | 68° | — | — |
| 1973 | 82° | 50° | 66° | — | — |
| 1972 | 82° | 50° | 66° | — | — |
| 1971 | 81° | 45° | 63° | — | — |
48 years of data from DEVORE CALIFORNIA