Weather on March 31
Rialto, CA
55 Years of Data
About This Date
March 31st in Rialto, CA typically brings pleasant spring weather, with average highs around 71°F and lows near 48°F. Over 49 years of records, the warmest March 31st was in 2011 (76°F average), while the coldest was 1998 (42°F) — a 34°F range across recorded history. Rain or other precipitation has occurred on about 4% of March 31st dates historically, with the wettest March 31st recording 3.53" of rain.
Planning for March 31st in Rialto, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 77° | 59° | 68° | — | — |
| 2025 | 68° | 54° | 61° | — | — |
| 2017 | 70° | 49° | 59° | — | — |
| 2016 | 71° | 42° | 57° | — | — |
| 2015 | 77° | 55° | 66° | — | — |
| 2014 | 64° | 45° | 54° | — | — |
| 2013 | 66° | 48° | 57° | — | — |
| 2012 | 54° | 46° | 50° | — | — |
| 2011warmest | 89° | 63° | 76° | — | — |
| 2010 | 54° | 40° | 47° | — | — |
| 2009 | 70° | 49° | 59° | — | — |
| 2008 | 61° | 43° | 52° | — | — |
| 2007 | 78° | 50° | 64° | — | — |
| 2006 | 52° | 45° | 48° | — | — |
| 2005 | 69° | 54° | 61° | — | — |
| 2004 | 76° | 50° | 63° | — | — |
| 2003 | 85° | 54° | 69° | — | — |
| 2002 | 84° | 50° | 67° | — | — |
| 2001 | 79° | 52° | 65° | — | — |
| 2000 | 74° | 58° | 66° | — | — |
| 1999 | 49° | 40° | 44° | — | — |
| 1998coldest | 51° | 33° | 42° | — | — |
| 1997 | 58° | 47° | 52° | — | — |
| 1996 | 75° | 47° | 61° | — | — |
| 1995 | 74° | 52° | 63° | — | — |
| 1994 | 80° | 50° | 65° | — | — |
| 1993 | 70° | 48° | 59° | — | — |
| 1992 | 56° | 48° | 52° | — | — |
| 1991 | 71° | 47° | 59° | — | — |
| 1990 | 69° | 49° | 59° | — | — |
| 1989 | 86° | 53° | 70° | — | — |
| 1988 | 70° | 54° | 62° | — | — |
| 1987 | 83° | — | — | — | — |
| 1986 | 79° | 55° | 67° | — | — |
| 1985 | 84° | 42° | 63° | — | — |
| 1984 | 64° | 44° | 54° | — | — |
| 1983 | 79° | 49° | 64° | — | — |
| 1982 | 65° | 40° | 52° | — | — |
| 1981 | 81° | 43° | 62° | — | — |
| 1980 | 71° | 44° | 58° | — | — |
| 1979 | 75° | 41° | 58° | — | — |
| 1978 | 62° | 50° | 56° | 3.53" | — |
| 1977 | 60° | 36° | 48° | — | — |
| 1976 | 80° | 45° | 62° | — | — |
| 1975 | 71° | 40° | 55° | 0.03" | — |
| 1974 | 69° | 49° | 59° | — | — |
| 1973 | 60° | 47° | 53° | — | — |
| 1972 | 82° | 40° | 61° | — | — |
| 1971 | 85° | 50° | 67° | — | — |
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.