Weather on October 15
Rialto, CA
55 Years of Data
Avg High
81°F
Avg Low
57°F
Warmest
1997
82°F avg
Coldest
2006
57°F avg
About This Date
October 15th in Rialto, CA typically brings warm fall weather, with average highs around 81°F and lows near 57°F. Over 48 years of records, the warmest October 15th was in 1997 (82°F average), while the coldest was 2006 (57°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 2% of October 15th dates historically.
Planning for October 15th in Rialto, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 68° | 54° | 61° | — | — |
| 2017 | 88° | 69° | 78° | — | — |
| 2016 | 75° | 54° | 64° | — | — |
| 2015 | 79° | 65° | 72° | — | — |
| 2014 | 73° | 57° | 65° | — | — |
| 2013 | 78° | 62° | 70° | — | — |
| 2012 | 90° | 67° | 78° | — | — |
| 2011 | 83° | 59° | 71° | — | — |
| 2010 | 77° | 58° | 67° | — | — |
| 2009 | 88° | 56° | 72° | — | — |
| 2008 | 88° | 69° | 78° | — | — |
| 2007 | 66° | 50° | 58° | — | — |
| 2006coldest | 60° | 53° | 57° | — | — |
| 2005 | 79° | 54° | 66° | — | — |
| 2004 | 87° | 57° | 72° | — | — |
| 2003 | 88° | 56° | 72° | — | — |
| 2002 | 77° | 50° | 64° | — | — |
| 2001 | 97° | 65° | 81° | — | — |
| 2000 | 81° | 52° | 66° | — | — |
| 1999 | 80° | 53° | 67° | — | — |
| 1998 | 68° | 50° | 59° | — | — |
| 1997warmest | 93° | 71° | 82° | — | — |
| 1996 | 90° | 57° | 73° | — | — |
| 1995 | 84° | 54° | 69° | — | — |
| 1994 | 69° | 50° | 60° | — | — |
| 1993 | 67° | 57° | 62° | — | — |
| 1992 | 68° | 52° | 60° | — | — |
| 1991 | 94° | 68° | 81° | — | — |
| 1990 | 78° | 55° | 67° | — | — |
| 1989 | 68° | 57° | 63° | — | — |
| 1988 | 91° | 56° | 73° | — | — |
| 1987 | 70° | 53° | 61° | — | — |
| 1986 | 83° | 51° | 67° | — | — |
| 1985 | 84° | 64° | 74° | — | — |
| 1984 | 78° | 55° | 67° | — | — |
| 1983 | 75° | 79° | 77° | — | — |
| 1982 | 91° | 54° | 72° | — | — |
| 1981 | 70° | 46° | 58° | — | — |
| 1980 | 69° | 46° | 58° | 0.05" | — |
| 1979 | 82° | 60° | 71° | — | — |
| 1978 | 94° | 58° | 76° | — | — |
| 1977 | 101° | 55° | 78° | — | — |
| 1976 | 82° | 59° | 71° | — | — |
| 1975 | 90° | 52° | 71° | — | — |
| 1974 | 98° | 53° | 76° | — | — |
| 1973 | 97° | 52° | 74° | — | — |
| 1972 | 78° | 46° | 62° | — | — |
| 1971 | 73° | 56° | 64° | — | — |
48 years of data from DEVORE CALIFORNIA