Weather on December 27
Rialto, CA
55 Years of Data
Avg High
62°F
Avg Low
43°F
Warmest
2013
67°F avg
Coldest
1988
39°F avg
About This Date
December 27th 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 27th was in 2013 (67°F average), while the coldest was 1988 (39°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 9% of December 27th dates historically, with the wettest December 27th recording 3.33" of rain.
Planning for December 27th in Rialto, CA? Great weather for outdoor activities.
Cooling Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 59° | 37° | 48° | — | — |
| 2016 | 59° | 43° | 51° | — | — |
| 2015 | 52° | 33° | 42° | — | — |
| 2014 | 56° | 42° | 49° | — | — |
| 2013warmest | 75° | 59° | 67° | — | — |
| 2012 | 54° | 36° | 45° | — | — |
| 2011 | 69° | 48° | 59° | — | — |
| 2010 | 62° | 47° | 54° | — | — |
| 2009 | 56° | 39° | 47° | — | — |
| 2008 | 52° | 38° | 45° | — | — |
| 2007 | 47° | 37° | 42° | — | — |
| 2006 | 52° | 40° | 46° | — | — |
| 2005 | 67° | 42° | 54° | — | — |
| 2004 | 57° | 44° | 51° | — | — |
| 2003 | 56° | 33° | 44° | — | — |
| 2002 | 67° | 44° | 55° | — | — |
| 2001 | 72° | 46° | 59° | — | — |
| 2000 | 76° | 55° | 65° | — | — |
| 1999 | 68° | 54° | 61° | — | — |
| 1998 | 76° | 53° | 64° | — | — |
| 1997 | 65° | 46° | 55° | — | — |
| 1996 | 50° | 46° | 48° | — | — |
| 1995 | 70° | 45° | 57° | — | — |
| 1994 | 65° | 47° | 56° | — | — |
| 1993 | 64° | 45° | 54° | — | — |
| 1992 | 57° | 43° | 50° | — | — |
| 1991 | 64° | 42° | 53° | — | — |
| 1990 | 57° | 40° | 48° | — | — |
| 1989 | 68° | 48° | 58° | — | — |
| 1988coldest | 50° | 28° | 39° | — | — |
| 1987 | 53° | 29° | 41° | — | — |
| 1986 | 65° | 37° | 51° | — | — |
| 1985 | 69° | 40° | 54° | — | — |
| 1984 | 60° | 46° | 53° | 3.33" | — |
| 1983 | 61° | 52° | 56° | 1.02" | — |
| 1982 | 61° | 35° | 48° | — | — |
| 1981 | 55° | 39° | 47° | — | — |
| 1980 | 80° | 46° | 63° | — | — |
| 1979 | 68° | 36° | 52° | — | — |
| 1978 | 65° | 36° | 50° | — | — |
| 1977 | 68° | 53° | 61° | 2.11" | — |
| 1976 | 70° | 35° | 52° | — | — |
| 1975 | 62° | 57° | 60° | — | — |
| 1974 | 64° | 32° | 48° | — | — |
| 1973 | 58° | 48° | 53° | — | — |
| 1972 | 78° | 39° | 59° | — | — |
| 1971 | 47° | 38° | 42° | 1.88" | — |
47 years of data from FONTANA 5 N