Weather on May 19
Rialto, CA
55 Years of Data
Avg High
81°F
Avg Low
53°F
Warmest
2008
82°F avg
Coldest
2011
54°F avg
About This Date
May 19th in Rialto, CA typically brings warm spring weather, with average highs around 81°F and lows near 53°F — a 28°F daily swing. Over 48 years of records, the warmest May 19th was in 2008 (82°F average), while the coldest was 2011 (54°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 2% of May 19th dates historically.
Planning for May 19th in Rialto, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 90° | 53° | 71° | — | — |
| 2017 | 84° | 59° | 72° | — | — |
| 2016 | 76° | 55° | 65° | — | — |
| 2015 | 68° | 52° | 60° | — | — |
| 2014 | 73° | 53° | 63° | — | — |
| 2013 | 82° | 53° | 68° | — | — |
| 2012 | 83° | 50° | 66° | — | — |
| 2011coldest | 65° | 43° | 54° | — | — |
| 2010 | 77° | 49° | 63° | — | — |
| 2009 | 88° | 64° | 76° | — | — |
| 2008warmest | 95° | 69° | 82° | — | — |
| 2007 | 82° | 51° | 67° | — | — |
| 2006 | 88° | 60° | 74° | — | — |
| 2005 | 91° | 55° | 73° | — | — |
| 2004 | 77° | 52° | 64° | — | — |
| 2003 | 92° | 52° | 72° | — | — |
| 2002 | 66° | 52° | 59° | — | — |
| 2001 | 76° | 56° | 66° | — | — |
| 2000 | 92° | 61° | 76° | — | — |
| 1999 | 76° | 49° | 62° | — | — |
| 1998 | 79° | 48° | 63° | — | — |
| 1997 | 81° | 57° | 69° | — | — |
| 1996 | 77° | 55° | 66° | — | — |
| 1995 | 84° | 54° | 69° | — | — |
| 1994 | 69° | 47° | 58° | — | — |
| 1993 | 80° | 54° | 67° | — | — |
| 1992 | 75° | 54° | 64° | — | — |
| 1991 | 68° | 42° | 55° | — | — |
| 1990 | 72° | 53° | 62° | — | — |
| 1989 | 81° | 50° | 65° | — | — |
| 1988 | 93° | 54° | 73° | — | — |
| 1987 | 67° | 57° | 62° | — | — |
| 1986 | 93° | 59° | 76° | — | — |
| 1985 | 75° | 53° | 64° | — | — |
| 1984 | 94° | 57° | 75° | — | — |
| 1983 | 91° | 53° | 72° | — | — |
| 1982 | 84° | 56° | 70° | — | — |
| 1981 | 80° | 59° | 70° | — | — |
| 1980 | 90° | 56° | 73° | — | — |
| 1979 | 82° | 52° | 67° | — | — |
| 1978 | 96° | 56° | 76° | — | — |
| 1977 | 78° | 48° | 63° | — | — |
| 1976 | 86° | 52° | 69° | — | — |
| 1975 | 73° | 54° | 63° | — | — |
| 1974 | 68° | 47° | 57° | — | — |
| 1973 | 82° | 57° | 70° | — | — |
| 1972 | 65° | 48° | 56° | 0.43" | — |
| 1971 | 91° | 47° | 69° | — | — |
48 years of data from DEVORE CALIFORNIA