Weather on August 30
Rialto, CA
55 Years of Data
Avg High
95°F
Avg Low
66°F
Warmest
1998
94°F avg
Coldest
1992
64°F avg
About This Date
August 30th in Rialto, CA typically brings hot summer weather, with average highs around 95°F and lows near 66°F — a 29°F daily swing. Over 47 years of records, the warmest August 30th was in 1998 (94°F average), while the coldest was 1992 (64°F) — a 30°F range across recorded history. This date has historically been dry, with little recorded precipitation.
Planning for August 30th in Rialto, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2017 | 106° | 83° | 94° | — | — |
| 2016 | 101° | 74° | 87° | — | — |
| 2015 | 91° | 69° | 80° | — | — |
| 2014 | 96° | 68° | 82° | — | — |
| 2013 | 93° | 75° | 84° | — | — |
| 2012 | 95° | 74° | 84° | — | — |
| 2011 | 94° | 65° | 79° | — | — |
| 2010 | 75° | 56° | 65° | — | — |
| 2009 | 98° | 74° | 86° | — | — |
| 2008 | 93° | 72° | 82° | — | — |
| 2007 | 104° | 82° | 93° | — | — |
| 2006 | 96° | 69° | 83° | — | — |
| 2005 | 98° | 67° | 82° | — | — |
| 2004 | 101° | 63° | 82° | — | — |
| 2003 | 99° | 67° | 83° | — | — |
| 2002 | 96° | 60° | 78° | — | — |
| 2001 | 89° | 56° | 72° | — | — |
| 2000 | 80° | 60° | 70° | — | — |
| 1999 | 92° | 62° | 77° | — | — |
| 1998warmest | 108° | 81° | 94° | — | — |
| 1997 | 97° | 63° | 80° | — | — |
| 1996 | 104° | 72° | 88° | — | — |
| 1995 | 101° | 72° | 86° | — | — |
| 1994 | 94° | 60° | 77° | — | — |
| 1993 | 89° | 58° | 73° | — | — |
| 1992coldest | 74° | 54° | 64° | — | — |
| 1991 | 92° | 64° | 78° | — | — |
| 1990 | 93° | 63° | 78° | — | — |
| 1989 | 89° | 58° | 73° | — | — |
| 1988 | 100° | 71° | 86° | — | — |
| 1987 | 96° | 63° | 79° | — | — |
| 1986 | 95° | 63° | 79° | — | — |
| 1985 | 106° | 71° | 88° | — | — |
| 1984 | 105° | 72° | 88° | — | — |
| 1983 | 100° | 65° | 82° | — | — |
| 1982 | 97° | 65° | 81° | — | — |
| 1981 | 99° | 67° | 83° | — | — |
| 1980 | 92° | 57° | 74° | — | — |
| 1979 | 87° | 64° | 76° | — | — |
| 1978 | 91° | 72° | 81° | — | — |
| 1977 | 91° | 64° | 78° | — | — |
| 1976 | 110° | 68° | 89° | — | — |
| 1975 | 98° | 55° | 77° | — | — |
| 1974 | 98° | 56° | 77° | — | — |
| 1973 | 89° | 58° | 73° | — | — |
| 1972 | 96° | 73° | 85° | — | — |
| 1971 | 98° | 59° | 79° | — | — |
47 years of data from FONTANA 5 N