Weather on December 22
Rialto, CA
55 Years of Data
Avg High
62°F
Avg Low
43°F
Warmest
2014
68°F avg
Coldest
1990
32°F avg
About This Date
December 22nd in Rialto, CA typically brings mild winter weather, with average highs around 62°F and lows near 43°F. Over 47 years of records, the warmest December 22nd was in 2014 (68°F average), while the coldest was 1990 (32°F) — a 36°F range across recorded history. Rain or other precipitation has occurred on about 6% of December 22nd dates historically, with the wettest December 22nd recording 2.79" of rain.
Planning for December 22nd in Rialto, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 77° | 44° | 60° | — | — |
| 2016 | 54° | 44° | 49° | — | — |
| 2015 | 54° | 46° | 50° | — | — |
| 2014warmest | 78° | 58° | 68° | — | — |
| 2013 | 68° | 42° | 55° | — | — |
| 2012 | 57° | 39° | 48° | — | — |
| 2011 | 53° | 45° | 49° | — | — |
| 2010 | 52° | 45° | 48° | — | — |
| 2009 | 53° | 41° | 47° | — | — |
| 2008 | 46° | 42° | 44° | — | — |
| 2007 | 56° | 45° | 50° | — | — |
| 2006 | 59° | 42° | 51° | — | — |
| 2005 | 77° | 55° | 66° | — | — |
| 2004 | 58° | 47° | 52° | — | — |
| 2003 | 68° | 52° | 60° | — | — |
| 2002 | 55° | 43° | 49° | — | — |
| 2001 | 59° | 36° | 47° | — | — |
| 2000 | 74° | 45° | 59° | — | — |
| 1999 | 64° | 50° | 57° | — | — |
| 1998 | 57° | 34° | 45° | — | — |
| 1997 | 57° | 44° | 51° | — | — |
| 1996 | 42° | 42° | 42° | — | — |
| 1995 | 62° | 39° | 51° | — | — |
| 1994 | 64° | 50° | 57° | — | — |
| 1993 | 68° | 45° | 56° | — | — |
| 1992 | 58° | 45° | 51° | — | — |
| 1991 | 60° | 42° | 51° | — | — |
| 1990coldest | 38° | 27° | 32° | — | — |
| 1989 | 74° | 37° | 55° | — | — |
| 1988 | 53° | 34° | 43° | — | — |
| 1987 | 62° | 38° | 50° | — | — |
| 1986 | 69° | 39° | 54° | — | — |
| 1985 | 77° | 43° | 60° | — | — |
| 1984 | 60° | 37° | 49° | — | — |
| 1983 | 59° | 46° | 53° | — | — |
| 1982 | 57° | 52° | 54° | 2.79" | — |
| 1981 | 64° | 45° | 54° | — | — |
| 1980 | 78° | 46° | 62° | — | — |
| 1979 | 61° | 38° | 49° | — | — |
| 1978 | 72° | 36° | 54° | — | — |
| 1977 | 69° | 49° | 59° | 0.08" | — |
| 1976 | 74° | 33° | 53° | — | — |
| 1975 | 60° | 52° | 56° | — | — |
| 1974 | 76° | 40° | 58° | — | — |
| 1973 | 61° | 44° | 52° | — | — |
| 1972 | 72° | 44° | 58° | — | — |
| 1971 | 56° | 46° | 51° | 2.44" | — |
47 years of data from FONTANA 5 N