Weather on October 31
Rialto, CA
55 Years of Data
Avg High
75°F
Avg Low
52°F
Warmest
1997
79°F avg
Coldest
1971
51°F avg
About This Date
October 31st in Rialto, CA typically brings pleasant fall weather, with average highs around 75°F and lows near 52°F. Over 48 years of records, the warmest October 31st was in 1997 (79°F average), while the coldest was 1971 (51°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 4% of October 31st dates historically, with the wettest October 31st recording 1.91" of rain.
Planning for October 31st in Rialto, CA? Great weather for outdoor activities.
Warming Trend
1.0°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 86° | 55° | 71° | — | — |
| 2017 | 64° | 54° | 59° | — | — |
| 2016 | 63° | 53° | 58° | — | — |
| 2015 | 89° | 63° | 76° | — | — |
| 2014 | 64° | 54° | 59° | — | — |
| 2013 | 76° | 53° | 64° | — | — |
| 2012 | 78° | 55° | 67° | — | — |
| 2011 | 83° | 58° | 70° | — | — |
| 2010 | 68° | 49° | 58° | — | — |
| 2009 | 79° | 64° | 71° | — | — |
| 2008 | 81° | 62° | 71° | — | — |
| 2007 | 82° | 52° | 67° | — | — |
| 2006 | 62° | 47° | 54° | — | — |
| 2005 | 84° | 65° | 74° | — | — |
| 2004 | 70° | 47° | 58° | — | — |
| 2003 | 60° | 45° | 52° | — | — |
| 2002 | 65° | 46° | 55° | — | — |
| 2001 | 74° | 51° | 62° | — | — |
| 2000 | 69° | 42° | 56° | — | — |
| 1999 | 94° | 64° | 79° | — | — |
| 1998 | 80° | 50° | 65° | — | — |
| 1997warmest | 95° | 62° | 79° | — | — |
| 1996 | 63° | 44° | 53° | — | — |
| 1995 | 60° | 55° | 58° | — | — |
| 1994 | 85° | 49° | 67° | — | — |
| 1993 | 81° | 58° | 69° | — | — |
| 1992 | 70° | 50° | 60° | — | — |
| 1991 | 66° | 57° | 62° | — | — |
| 1990 | 75° | 51° | 63° | — | — |
| 1989 | 76° | 44° | 60° | — | — |
| 1988 | 89° | 56° | 72° | — | — |
| 1987 | 60° | 56° | 58° | 1.91" | — |
| 1986 | 77° | 55° | 66° | — | — |
| 1985 | 78° | 55° | 67° | — | — |
| 1984 | 69° | 56° | 62° | — | — |
| 1983 | 75° | 63° | 69° | — | — |
| 1982 | 75° | 48° | 62° | — | — |
| 1981 | 80° | 47° | 63° | — | — |
| 1980 | 86° | 52° | 69° | — | — |
| 1979 | 75° | 42° | 59° | — | — |
| 1978 | 60° | 50° | 55° | — | — |
| 1977 | 76° | 44° | 60° | — | — |
| 1976 | 88° | 44° | 66° | — | — |
| 1975 | 79° | 44° | 61° | 0.53" | — |
| 1974 | 65° | 48° | 56° | — | — |
| 1973 | 90° | 50° | 70° | — | — |
| 1972 | 71° | 45° | 58° | — | — |
| 1971coldest | 69° | 33° | 51° | — | — |
48 years of data from DEVORE CALIFORNIA