Weather on December 11
Rialto, CA
55 Years of Data
Avg High
65°F
Avg Low
44°F
Warmest
2004
69°F avg
Coldest
1972
38°F avg
About This Date
December 11th in Rialto, CA typically brings mild winter weather, with average highs around 65°F and lows near 44°F. Over 47 years of records, the warmest December 11th was in 2004 (69°F average), while the coldest was 1972 (38°F) — a 31°F range across recorded history. Rain or other precipitation has occurred on about 4% of December 11th dates historically.
Planning for December 11th in Rialto, CA? Great weather for outdoor activities.
Warming Trend
1.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 86° | 49° | 68° | — | — |
| 2016 | 58° | 53° | 55° | — | — |
| 2015 | 52° | 46° | 49° | — | — |
| 2014 | 65° | 54° | 59° | — | — |
| 2013 | 62° | 47° | 54° | — | — |
| 2012 | 71° | 49° | 60° | — | — |
| 2011 | 56° | 41° | 48° | — | — |
| 2010 | 76° | 61° | 68° | — | — |
| 2009 | 51° | 42° | 47° | — | — |
| 2008 | 74° | 53° | 63° | — | — |
| 2007 | 52° | 40° | 46° | — | — |
| 2006 | 64° | 45° | 54° | — | — |
| 2005 | 76° | 48° | 62° | — | — |
| 2004warmest | 78° | 60° | 69° | — | — |
| 2003 | 50° | 43° | 46° | — | — |
| 2002 | 71° | 49° | 60° | — | — |
| 2001 | 56° | 35° | 45° | — | — |
| 2000 | 62° | 42° | 52° | — | — |
| 1999 | 62° | 48° | 55° | — | — |
| 1998 | 72° | 48° | 60° | — | — |
| 1997 | 54° | 45° | 49° | — | — |
| 1996 | 55° | 50° | 53° | — | — |
| 1995 | 72° | 55° | 63° | — | — |
| 1994 | 56° | 39° | 47° | — | — |
| 1993 | 52° | 43° | 47° | — | — |
| 1992 | 49° | 42° | 45° | — | — |
| 1991 | 61° | 44° | 52° | — | — |
| 1990 | 69° | 49° | 59° | — | — |
| 1989 | 61° | 39° | 50° | — | — |
| 1988 | 76° | 42° | 59° | — | — |
| 1987 | 75° | 46° | 61° | — | — |
| 1986 | 65° | 36° | 50° | — | — |
| 1985 | 50° | 33° | 42° | 0.08" | — |
| 1984 | 67° | 51° | 59° | 0.23" | — |
| 1983 | 60° | 40° | 50° | — | — |
| 1982 | 74° | 46° | 60° | — | — |
| 1981 | 67° | 46° | 56° | — | — |
| 1980 | 81° | 38° | 59° | — | — |
| 1979 | 65° | 43° | 54° | — | — |
| 1978 | 75° | 37° | 56° | — | — |
| 1977 | 65° | 49° | 57° | — | — |
| 1976 | 77° | 37° | 57° | — | — |
| 1975 | 68° | 50° | 59° | — | — |
| 1974 | 68° | 34° | 51° | — | — |
| 1973 | 71° | 39° | 55° | — | — |
| 1972coldest | 48° | 29° | 38° | — | — |
| 1971 | 57° | 36° | 46° | — | — |
47 years of data from FONTANA 5 N