Weather on December 13
Rialto, CA
55 Years of Data
Avg High
64°F
Avg Low
42°F
Warmest
2010
67°F avg
Coldest
1972
44°F avg
About This Date
December 13th in Rialto, CA typically brings mild winter weather, with average highs around 64°F and lows near 42°F. Over 47 years of records, the warmest December 13th was in 2010 (67°F average), while the coldest was 1972 (44°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 2% of December 13th dates historically, with the wettest December 13th recording 0.66" of rain.
Planning for December 13th in Rialto, CA? Great weather for outdoor activities.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 82° | 47° | 65° | — | — |
| 2016 | 66° | 47° | 56° | — | — |
| 2015 | 59° | 41° | 50° | — | — |
| 2014 | 57° | 44° | 51° | — | — |
| 2013 | 67° | 40° | 53° | — | — |
| 2012 | 48° | 42° | 45° | — | — |
| 2011 | 53° | 38° | 45° | — | — |
| 2010warmest | 80° | 54° | 67° | — | — |
| 2009 | 52° | 46° | 49° | — | — |
| 2008 | 50° | 38° | 44° | — | — |
| 2007 | 56° | 44° | 50° | — | — |
| 2006 | 73° | 56° | 64° | — | — |
| 2005 | 68° | 40° | 54° | — | — |
| 2004 | 80° | 46° | 63° | — | — |
| 2003 | 65° | 41° | 53° | — | — |
| 2002 | 65° | 45° | 55° | — | — |
| 2001 | 65° | 39° | 52° | — | — |
| 2000 | 57° | 36° | 46° | — | — |
| 1999 | 63° | 42° | 52° | — | — |
| 1998 | 81° | 50° | 65° | — | — |
| 1997 | 65° | 50° | 57° | — | — |
| 1996 | 72° | 46° | 59° | — | — |
| 1995 | 57° | 49° | 53° | — | — |
| 1994 | 51° | 40° | 45° | — | — |
| 1993 | 69° | 43° | 56° | — | — |
| 1992 | 53° | 44° | 49° | — | — |
| 1991 | 71° | 44° | 58° | — | — |
| 1990 | 52° | 41° | 46° | — | — |
| 1989 | 64° | 36° | 50° | — | — |
| 1988 | 77° | 46° | 62° | — | — |
| 1987 | 50° | 41° | 46° | — | — |
| 1986 | 68° | 38° | 53° | — | — |
| 1985 | 62° | 30° | 46° | — | — |
| 1984 | 56° | 42° | 49° | — | — |
| 1983 | 67° | 42° | 54° | — | — |
| 1982 | 63° | 42° | 52° | — | — |
| 1981 | 61° | 50° | 55° | — | — |
| 1980 | 74° | 39° | 56° | — | — |
| 1979 | 76° | 37° | 56° | — | — |
| 1978 | 76° | 38° | 57° | — | — |
| 1977 | 80° | 41° | 61° | — | — |
| 1976 | 81° | 39° | 60° | — | — |
| 1975 | 53° | 46° | 50° | — | — |
| 1974 | 71° | 39° | 55° | — | — |
| 1973 | 55° | 39° | 47° | — | — |
| 1972coldest | 55° | 32° | 44° | — | — |
| 1971 | 55° | 40° | 47° | 0.66" | — |
47 years of data from FONTANA 5 N