Weather on March 19
Rialto, CA
55 Years of Data
Avg High
72°F
Avg Low
47°F
Warmest
2026
81°F avg
Coldest
1991
43°F avg
About This Date
March 19th in Rialto, CA typically brings pleasant spring weather, with average highs around 72°F and lows near 47°F — a 25°F daily swing. Over 49 years of records, the warmest March 19th was in 2026 (81°F average), while the coldest was 1991 (43°F) — a 38°F range across recorded history. Rain or other precipitation has occurred on about 16% of March 19th dates historically, with the wettest March 19th recording 3.25" of rain.
Planning for March 19th in Rialto, CA? Great weather for outdoor activities.
Warming Trend
1.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026warmest | 102° | 59° | 81° | — | — |
| 2025 | 73° | 41° | 57° | — | — |
| 2017 | 83° | 55° | 69° | — | — |
| 2016 | 75° | 53° | 64° | — | — |
| 2015 | 80° | 52° | 66° | — | — |
| 2014 | 77° | 53° | 65° | — | — |
| 2013 | 66° | 47° | 56° | — | — |
| 2012 | 54° | 35° | 44° | — | — |
| 2011 | 55° | 44° | 50° | — | — |
| 2010 | 77° | 54° | 65° | — | — |
| 2009 | 80° | 54° | 67° | — | — |
| 2008 | 69° | 47° | 58° | — | — |
| 2007 | 57° | 48° | 53° | — | — |
| 2006 | 50° | 35° | 43° | — | — |
| 2005 | 55° | 43° | 49° | — | — |
| 2004 | 85° | 55° | 70° | — | — |
| 2003 | 74° | 46° | 60° | — | — |
| 2002 | 77° | 47° | 62° | — | — |
| 2001 | 88° | 59° | 73° | — | — |
| 2000 | 77° | 48° | 63° | — | — |
| 1999 | 74° | 45° | 59° | — | — |
| 1998 | 76° | 46° | 61° | — | — |
| 1997 | 96° | 64° | 80° | — | — |
| 1996 | 85° | 59° | 72° | — | — |
| 1995 | 63° | 54° | 58° | — | — |
| 1994 | 64° | 52° | 58° | 3.25" | — |
| 1993 | 78° | 48° | 63° | — | — |
| 1992 | 70° | 47° | 58° | — | — |
| 1991coldest | 47° | 40° | 43° | — | — |
| 1990 | 85° | 50° | 67° | — | — |
| 1989 | 75° | 48° | 62° | — | — |
| 1988 | 84° | 42° | 63° | — | — |
| 1987 | 60° | 48° | 54° | 0.41" | — |
| 1986 | 76° | 44° | 60° | — | — |
| 1985 | 67° | 39° | 53° | 0.03" | — |
| 1984 | 85° | 57° | 71° | — | — |
| 1983 | 65° | 40° | 52° | 0.43" | — |
| 1982 | 59° | 38° | 48° | 0.13" | — |
| 1981 | 67° | 50° | 58° | 0.79" | — |
| 1980 | 71° | 41° | 56° | 0.18" | — |
| 1979 | 51° | 41° | 46° | 2.41" | — |
| 1978 | 73° | 46° | 60° | — | — |
| 1977 | 71° | 38° | 54° | — | — |
| 1976 | 68° | 51° | 60° | — | — |
| 1975 | 78° | 47° | 62° | — | — |
| 1974 | 65° | 51° | 58° | — | — |
| 1973 | 69° | 40° | 54° | — | — |
| 1972 | 80° | 45° | 62° | — | — |
| 1971 | 81° | 39° | 60° | — | — |
49 years of data from DEVORE CALIFORNIA