Weather on April 1
Rialto, CA
55 Years of Data
About This Date
April 1st in Rialto, CA typically brings mild spring weather, with average highs around 69°F and lows near 47°F. Over 49 years of records, the warmest April 1st was in 2011 (74°F average), while the coldest was 1998 (41°F) — a 33°F range across recorded history. Rain or other precipitation has occurred on about 12% of April 1st dates historically, with the wettest April 1st recording 3.02" of rain.
Planning for April 1st in Rialto, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 73° | 54° | 64° | — | — |
| 2025 | 64° | 50° | 57° | — | — |
| 2017 | 79° | 49° | 64° | — | — |
| 2016 | 75° | 47° | 61° | — | — |
| 2015 | 74° | 49° | 61° | — | — |
| 2014 | 55° | 44° | 50° | — | — |
| 2013 | 60° | 49° | 54° | — | — |
| 2012 | 62° | 42° | 52° | — | — |
| 2011warmest | 88° | 61° | 74° | — | — |
| 2010 | 58° | 42° | 50° | — | — |
| 2009 | 68° | 45° | 56° | — | — |
| 2008 | 62° | 41° | 52° | — | — |
| 2007 | 79° | 53° | 66° | — | — |
| 2006 | 58° | 43° | 50° | — | — |
| 2005 | 81° | 56° | 68° | — | — |
| 2004 | 55° | 47° | 51° | — | — |
| 2003 | 72° | 49° | 60° | — | — |
| 2002 | 81° | 48° | 64° | — | — |
| 2001 | 61° | 48° | 54° | — | — |
| 2000 | 77° | 52° | 64° | — | — |
| 1999 | 49° | 34° | 41° | — | — |
| 1998coldest | 48° | 33° | 41° | — | — |
| 1997 | 67° | 47° | 57° | — | — |
| 1996 | 73° | 45° | 59° | — | — |
| 1995 | 70° | 48° | 59° | — | — |
| 1994 | 76° | 51° | 63° | — | — |
| 1993 | 60° | 48° | 54° | — | — |
| 1992 | 64° | 49° | 56° | — | — |
| 1991 | 51° | 44° | 48° | — | — |
| 1990 | 62° | 47° | 54° | 0.25" | — |
| 1989 | 74° | 52° | 63° | — | — |
| 1988 | 78° | 43° | 60° | — | — |
| 1987 | 76° | 44° | 60° | — | — |
| 1986 | 66° | 56° | 61° | — | — |
| 1985 | 89° | 56° | 72° | — | — |
| 1984 | 64° | 40° | 52° | 0.28" | — |
| 1983 | 83° | 47° | 65° | — | — |
| 1982 | 58° | 45° | 51° | 3.02" | — |
| 1981 | 71° | 47° | 59° | — | — |
| 1980 | 64° | 43° | 53° | 0.3" | — |
| 1979 | 75° | 41° | 58° | — | — |
| 1978 | 67° | 50° | 58° | 0.23" | — |
| 1977 | 57° | 44° | 51° | — | — |
| 1976 | 77° | 42° | 60° | — | — |
| 1975 | 64° | 44° | 54° | 0.46" | — |
| 1974 | 66° | 44° | 55° | — | — |
| 1973 | 63° | 48° | 55° | — | — |
| 1972 | 80° | 46° | 63° | — | — |
| 1971 | 87° | 43° | 65° | — | — |
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
Rialto, CA has no months that meet our "pleasant" threshold — every season has tradeoffs.