Weather on March 31
Rialto, CA
55 Years of Data
Avg High
71°F
Avg Low
48°F
Warmest
2011
76°F avg
Coldest
1998
42°F avg
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° | — | — |
49 years of data from DEVORE CALIFORNIA