Weather on February 18
Rialto, CA
55 Years of Data
Avg High
66°F
Avg Low
45°F
Warmest
1981
71°F avg
Coldest
2006
43°F avg
About This Date
February 18th in Rialto, CA typically brings mild winter weather, with average highs around 66°F and lows near 45°F. Over 49 years of records, the warmest February 18th was in 1981 (71°F average), while the coldest was 2006 (43°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 8% of February 18th dates historically, with the wettest February 18th recording 2.54" of rain.
Planning for February 18th in Rialto, CA? Great weather for outdoor activities.
Cooling Trend
1.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 55° | 46° | 50° | — | — |
| 2025 | 75° | 47° | 61° | — | — |
| 2017 | 55° | 45° | 50° | — | — |
| 2016 | 60° | 48° | 54° | — | — |
| 2015 | 77° | 53° | 65° | — | — |
| 2014 | 71° | 42° | 57° | — | — |
| 2013 | 60° | 36° | 48° | — | — |
| 2012 | 62° | 42° | 52° | — | — |
| 2011 | 54° | 40° | 47° | — | — |
| 2010 | 68° | 48° | 58° | — | — |
| 2009 | 59° | 38° | 48° | — | — |
| 2008 | 68° | 47° | 57° | — | — |
| 2007 | 70° | 51° | 60° | — | — |
| 2006coldest | 48° | 38° | 43° | — | — |
| 2005 | 52° | 48° | 50° | — | — |
| 2004 | 61° | 44° | 52° | — | — |
| 2003 | 66° | 45° | 55° | — | — |
| 2002 | 56° | 38° | 47° | — | — |
| 2001 | 55° | 43° | 49° | — | — |
| 2000 | 68° | 40° | 54° | — | — |
| 1999 | 68° | 47° | 57° | — | — |
| 1998 | 63° | 37° | 50° | — | — |
| 1997 | 72° | 52° | 62° | — | — |
| 1996 | 66° | 47° | 56° | — | — |
| 1995 | 75° | 56° | 65° | — | — |
| 1994 | 51° | 41° | 46° | 0.15" | — |
| 1993 | 55° | 48° | 52° | — | — |
| 1992 | 64° | 46° | 55° | — | — |
| 1991 | 64° | 50° | 57° | — | — |
| 1990 | 48° | 41° | 45° | 2.54" | — |
| 1989 | 67° | 40° | 53° | — | — |
| 1988 | 66° | 36° | 51° | — | — |
| 1987 | 65° | 52° | 58° | — | — |
| 1986 | 65° | 52° | 58° | 0.1" | — |
| 1985 | 72° | 50° | 61° | — | — |
| 1984 | 68° | 38° | 53° | — | — |
| 1983 | 70° | 48° | 59° | — | — |
| 1982 | 74° | 53° | 63° | — | — |
| 1981warmest | 91° | 50° | 71° | — | — |
| 1980 | 71° | 54° | 62° | — | — |
| 1979 | 70° | 40° | 55° | — | — |
| 1978 | 68° | 40° | 54° | — | — |
| 1977 | 90° | 47° | 68° | — | — |
| 1976 | 74° | 41° | 57° | — | — |
| 1975 | 70° | 31° | 50° | — | — |
| 1974 | 63° | 37° | 50° | — | — |
| 1973 | 73° | 38° | 55° | — | — |
| 1972 | 82° | 49° | 65° | — | — |
| 1971 | 62° | 44° | 53° | 0.2" | — |
49 years of data from DEVORE CALIFORNIA