Weather on March 15
Rialto, CA
55 Years of Data
Avg High
71°F
Avg Low
47°F
Warmest
2015
74°F avg
Coldest
1991
38°F avg
About This Date
March 15th in Rialto, CA typically brings pleasant spring weather, with average highs around 71°F and lows near 47°F. Over 49 years of records, the warmest March 15th was in 2015 (74°F average), while the coldest was 1991 (38°F) — a 36°F range across recorded history. Rain or other precipitation has occurred on about 4% of March 15th dates historically, with the wettest March 15th recording 1.02" of rain.
Planning for March 15th in Rialto, CA? Great weather for outdoor activities.
Warming Trend
1.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 93° | 52° | 73° | — | — |
| 2025 | 63° | 45° | 54° | — | — |
| 2017 | 84° | 62° | 73° | — | — |
| 2016 | 79° | 54° | 66° | — | — |
| 2015warmest | 86° | 62° | 74° | — | — |
| 2014 | 80° | 60° | 70° | — | — |
| 2013 | 82° | 57° | 70° | — | — |
| 2012 | 69° | 44° | 57° | — | — |
| 2011 | 78° | 53° | 66° | — | — |
| 2010 | 73° | 58° | 65° | — | — |
| 2009 | 56° | 44° | 50° | — | — |
| 2008 | 55° | 38° | 46° | — | — |
| 2007 | 83° | 56° | 69° | — | — |
| 2006 | 63° | 41° | 52° | — | — |
| 2005 | 71° | 50° | 61° | — | — |
| 2004 | 89° | 54° | 71° | — | — |
| 2003 | 52° | 50° | 51° | — | — |
| 2002 | 58° | 38° | 48° | — | — |
| 2001 | 74° | 43° | 58° | — | — |
| 2000 | 79° | 52° | 65° | — | — |
| 1999 | 47° | 38° | 42° | — | — |
| 1998 | 70° | 44° | 57° | — | — |
| 1997 | 79° | 47° | 63° | — | — |
| 1996 | 69° | 50° | 60° | — | — |
| 1995 | 77° | 58° | 67° | — | — |
| 1994 | 83° | 49° | 66° | — | — |
| 1993 | 67° | 50° | 58° | — | — |
| 1992 | 63° | 42° | 52° | — | — |
| 1991coldest | 44° | 32° | 38° | — | — |
| 1990 | 78° | 39° | 59° | — | — |
| 1989 | 74° | 46° | 60° | — | — |
| 1988 | 65° | 39° | 52° | — | — |
| 1987 | 57° | 45° | 51° | 1.02" | — |
| 1986 | 58° | 46° | 52° | — | — |
| 1985 | 62° | 48° | 55° | — | — |
| 1984 | 67° | 52° | 59° | — | — |
| 1983 | 70° | 44° | 57° | — | — |
| 1982 | 62° | 48° | 55° | 0.2" | — |
| 1981 | 75° | 40° | 57° | — | — |
| 1980 | 72° | 45° | 58° | — | — |
| 1979 | 62° | 45° | 53° | — | — |
| 1978 | 82° | 43° | 62° | — | — |
| 1977 | 66° | 34° | 50° | — | — |
| 1976 | 86° | 42° | 64° | — | — |
| 1975 | 65° | 31° | 48° | — | — |
| 1974 | 86° | 49° | 67° | — | — |
| 1973 | 71° | 48° | 60° | — | — |
| 1972 | 89° | 44° | 67° | — | — |
| 1971 | 78° | 38° | 58° | — | — |
49 years of data from DEVORE CALIFORNIA