Weather on August 25
Rialto, CA
55 Years of Data
About This Date
August 25th in Rialto, CA typically brings hot summer weather, with average highs around 94°F and lows near 65°F — a 29°F daily swing. Over 48 years of records, the warmest August 25th was in 2010 (91°F average), while the coldest was 1983 (67°F) — a 24°F range across recorded history. This date has historically been dry, with little recorded precipitation.
Planning for August 25th in Rialto, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 104° | 75° | 90° | — | — |
| 2025 | 100° | 73° | 87° | — | — |
| 2017 | 90° | 63° | 76° | — | — |
| 2016 | 89° | 63° | 76° | — | — |
| 2015 | 87° | 74° | 80° | — | — |
| 2014 | 81° | 63° | 72° | — | — |
| 2013 | 94° | 71° | 82° | — | — |
| 2012 | 84° | 61° | 72° | — | — |
| 2011 | 100° | 73° | 87° | — | — |
| 2010warmest | 104° | 77° | 91° | — | — |
| 2009 | 95° | 64° | 80° | — | — |
| 2008 | 101° | 73° | 87° | — | — |
| 2007 | 92° | 63° | 77° | — | — |
| 2006 | 89° | 63° | 76° | — | — |
| 2005 | 98° | 69° | 84° | — | — |
| 2004 | 88° | 59° | 73° | — | — |
| 2003 | 99° | 69° | 84° | — | — |
| 2002 | 95° | 65° | 80° | — | — |
| 2001 | 104° | 66° | 85° | — | — |
| 2000 | 94° | 70° | 82° | — | — |
| 1999 | 106° | 74° | 90° | — | — |
| 1998 | 95° | 67° | 81° | — | — |
| 1997 | 96° | 65° | 80° | — | — |
| 1996 | 103° | 72° | 87° | — | — |
| 1995 | 95° | 65° | 80° | — | — |
| 1994 | 99° | 59° | 79° | — | — |
| 1993 | 96° | 68° | 82° | — | — |
| 1992 | 88° | 58° | 73° | — | — |
| 1991 | 89° | 64° | 77° | — | — |
| 1990 | 82° | 62° | 72° | — | — |
| 1989 | 80° | 58° | 69° | — | — |
| 1988 | 97° | 72° | 84° | — | — |
| 1987 | 85° | 57° | 71° | — | — |
| 1985 | 110° | 70° | 90° | — | — |
| 1984 | 93° | 64° | 79° | — | — |
| 1983coldest | 74° | 61° | 67° | — | — |
| 1982 | 94° | 66° | 80° | — | — |
| 1981 | 109° | 70° | 89° | — | — |
| 1980 | 94° | 63° | 78° | — | — |
| 1979 | 98° | 64° | 81° | — | — |
| 1978 | 84° | 67° | 75° | — | — |
| 1977 | 90° | 61° | 75° | — | — |
| 1976 | 98° | 62° | 80° | — | — |
| 1975 | 99° | 56° | 77° | — | — |
| 1974 | 101° | 60° | 80° | — | — |
| 1973 | 82° | 57° | 70° | — | — |
| 1972 | 85° | 63° | 74° | — | — |
| 1971 | 100° | 60° | 80° | — | — |
Rialto, CA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Rialto, CA Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Rialto, CA Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Rialto, CA
Most pleasant months in Rialto, CA: January, February, March, April, May, October, November, December.
What to expect on August 25th
This page shows what actually happened each year. For the odds — typical high and low, and how often it stays dry — see the climatological outlook for this date.
August 25th outlook →