Weather on August 29
Rialto, CA
55 Years of Data
Avg High
97°F
Avg Low
66°F
Warmest
1998
96°F avg
Coldest
2010
63°F avg
About This Date
August 29th in Rialto, CA typically brings hot summer weather, with average highs around 97°F and lows near 66°F — a 31°F daily swing. Over 48 years of records, the warmest August 29th was in 1998 (96°F average), while the coldest was 2010 (63°F) — a 33°F range across recorded history. This date has historically been dry, with little recorded precipitation.
Planning for August 29th in Rialto, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.0°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 97° | 67° | 82° | — | — |
| 2017 | 106° | 85° | 95° | — | — |
| 2016 | 101° | 70° | 85° | — | — |
| 2015 | 97° | 73° | 85° | — | — |
| 2014 | 97° | 71° | 84° | — | — |
| 2013 | 96° | 72° | 84° | — | — |
| 2012 | 101° | 76° | 88° | — | — |
| 2011 | 98° | 71° | 85° | — | — |
| 2010coldest | 72° | 55° | 63° | — | — |
| 2009 | 102° | 78° | 90° | — | — |
| 2008 | 98° | 67° | 82° | — | — |
| 2007 | 106° | 75° | 90° | — | — |
| 2006 | 100° | 73° | 87° | — | — |
| 2005 | 103° | 72° | 87° | — | — |
| 2004 | 96° | 63° | 79° | — | — |
| 2003 | 97° | 67° | 82° | — | — |
| 2002 | 93° | 57° | 75° | — | — |
| 2001 | 88° | 60° | 74° | — | — |
| 2000 | 76° | 62° | 69° | — | — |
| 1999 | 100° | 67° | 83° | — | — |
| 1998warmest | 111° | 81° | 96° | — | — |
| 1997 | 96° | 61° | 78° | — | — |
| 1996 | 108° | 71° | 89° | — | — |
| 1995 | 101° | 72° | 86° | — | — |
| 1994 | 96° | 62° | 79° | — | — |
| 1993 | 86° | 59° | 73° | — | — |
| 1992 | 88° | 59° | 73° | — | — |
| 1991 | 92° | 60° | 76° | — | — |
| 1990 | 96° | 65° | 80° | — | — |
| 1989 | 93° | 58° | 75° | — | — |
| 1988 | 101° | 62° | 81° | — | — |
| 1987 | 93° | 64° | 79° | — | — |
| 1986 | 99° | 64° | 81° | — | — |
| 1985 | 106° | 67° | 86° | — | — |
| 1984 | 105° | 69° | 87° | — | — |
| 1983 | 101° | 65° | 83° | — | — |
| 1982 | 95° | 63° | 79° | — | — |
| 1981 | 110° | 72° | 91° | — | — |
| 1980 | 96° | 61° | 78° | — | — |
| 1979 | 83° | 63° | 73° | — | — |
| 1978 | 93° | 71° | 82° | — | — |
| 1977 | 100° | 63° | 81° | — | — |
| 1976 | 110° | 67° | 88° | — | — |
| 1975 | 94° | 55° | 74° | — | — |
| 1974 | 99° | 55° | 77° | — | — |
| 1973 | 98° | 57° | 78° | — | — |
| 1972 | 98° | 65° | 81° | — | — |
| 1971 | 102° | 64° | 83° | — | — |
48 years of data from FONTANA 5 N