Weather on April 18
Rialto, CA
55 Years of Data
Avg High
72°F
Avg Low
50°F
Warmest
1994
76°F avg
Coldest
1995
45°F avg
About This Date
April 18th in Rialto, CA typically brings pleasant spring weather, with average highs around 72°F and lows near 50°F. Over 48 years of records, the warmest April 18th was in 1994 (76°F average), while the coldest was 1995 (45°F) — a 31°F range across recorded history. Rain or other precipitation has occurred on about 10% of April 18th dates historically, with the wettest April 18th recording 1.6" of rain.
Planning for April 18th in Rialto, CA? Great weather for outdoor activities.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | — | 50° | — | — | — |
| 2017 | 71° | 57° | 64° | — | — |
| 2016 | 85° | 57° | 71° | — | — |
| 2015 | 80° | 54° | 67° | — | — |
| 2014 | 70° | 53° | 61° | — | — |
| 2013 | 70° | 54° | 62° | — | — |
| 2012 | 78° | 54° | 66° | — | — |
| 2011 | 57° | 53° | 55° | — | — |
| 2010 | 79° | 49° | 64° | — | — |
| 2009 | 85° | 53° | 69° | — | — |
| 2008 | 81° | 54° | 67° | — | — |
| 2007 | 61° | 47° | 54° | — | — |
| 2006 | 70° | 52° | 61° | — | — |
| 2005 | 63° | 49° | 56° | — | — |
| 2004 | 63° | 45° | 54° | — | — |
| 2003 | 60° | 43° | 51° | — | — |
| 2002 | 64° | 41° | 53° | — | — |
| 2001 | 74° | 52° | 63° | — | — |
| 2000 | 56° | 41° | 48° | — | — |
| 1999 | 90° | 59° | 74° | — | — |
| 1998 | 84° | 52° | 68° | — | — |
| 1997 | 80° | 49° | 64° | — | — |
| 1996 | 69° | 49° | 59° | — | — |
| 1995coldest | 49° | 42° | 45° | — | — |
| 1994warmest | 89° | 62° | 76° | — | — |
| 1993 | 67° | 50° | 58° | — | — |
| 1992 | 79° | 57° | 68° | — | — |
| 1991 | 57° | 40° | 48° | — | — |
| 1990 | 66° | 54° | 60° | — | — |
| 1989 | 83° | 53° | 68° | — | — |
| 1988 | 67° | 53° | 60° | — | — |
| 1987 | 71° | 54° | 62° | — | — |
| 1986 | 77° | 43° | 60° | — | — |
| 1985 | 58° | 48° | 53° | 0.3" | — |
| 1984 | 73° | 50° | 62° | — | — |
| 1983 | 68° | 51° | 60° | 1.6" | — |
| 1982 | 84° | 47° | 65° | — | — |
| 1981 | 67° | 52° | 59° | 1.52" | — |
| 1980 | 95° | 55° | 75° | — | — |
| 1979 | 68° | 48° | 58° | — | — |
| 1978 | 82° | 47° | 64° | — | — |
| 1977 | 78° | 54° | 66° | — | — |
| 1976 | 72° | 41° | 56° | — | — |
| 1975 | 67° | 39° | 53° | — | — |
| 1974 | 75° | 50° | 63° | — | — |
| 1973 | 70° | 49° | 59° | — | — |
| 1972 | 62° | 48° | 55° | 0.18" | — |
| 1971 | 61° | 37° | 49° | 0.18" | — |
48 years of data from DEVORE CALIFORNIA