Weather on December 30
Rialto, CA
55 Years of Data
Avg High
63°F
Avg Low
44°F
Warmest
1998
70°F avg
Coldest
2014
41°F avg
About This Date
December 30th in Rialto, CA typically brings mild winter weather, with average highs around 63°F and lows near 44°F. Over 46 years of records, the warmest December 30th was in 1998 (70°F average), while the coldest was 2014 (41°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 13% of December 30th dates historically, with the wettest December 30th recording 2.29" of rain.
Planning for December 30th in Rialto, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 66° | 44° | 55° | — | — |
| 2016 | 59° | 49° | 54° | — | — |
| 2015 | 57° | 38° | 47° | — | — |
| 2014coldest | 47° | 36° | 41° | — | — |
| 2013 | 71° | 53° | 62° | — | — |
| 2012 | 49° | 38° | 43° | — | — |
| 2011 | 75° | 54° | 64° | — | — |
| 2010 | 48° | 37° | 43° | — | — |
| 2009 | 48° | 43° | 45° | — | — |
| 2008 | 67° | 52° | 59° | — | — |
| 2007 | 60° | 40° | 50° | — | — |
| 2006 | 64° | 42° | 53° | — | — |
| 2005 | 65° | 45° | 55° | — | — |
| 2004 | 58° | 43° | 50° | — | — |
| 2003 | 58° | 44° | 51° | — | — |
| 2002 | 64° | 37° | 51° | — | — |
| 2001 | 56° | 46° | 51° | — | — |
| 2000 | 80° | 53° | 67° | — | — |
| 1999 | 74° | 45° | 59° | — | — |
| 1998warmest | 86° | 54° | 70° | — | — |
| 1997 | 79° | 59° | 69° | — | — |
| 1996 | 65° | 50° | 57° | — | — |
| 1995 | 68° | 45° | 56° | — | — |
| 1994 | 55° | 37° | 46° | — | — |
| 1993 | 67° | 49° | 58° | — | — |
| 1992 | 52° | 41° | 46° | — | — |
| 1991 | 54° | 41° | 47° | — | — |
| 1990 | 52° | 40° | 46° | — | — |
| 1988 | 54° | 30° | 42° | — | — |
| 1987 | 50° | 35° | 43° | 0.3" | — |
| 1986 | 72° | 38° | 55° | — | — |
| 1985 | 66° | 53° | 60° | 0.08" | — |
| 1984 | 67° | 39° | 53° | — | — |
| 1983 | 77° | 44° | 61° | — | — |
| 1982 | 57° | 36° | 46° | 0.05" | — |
| 1981 | 57° | 49° | 53° | 1.12" | — |
| 1980 | 83° | 46° | 64° | — | — |
| 1979 | 72° | 44° | 58° | — | — |
| 1978 | 65° | 35° | 50° | — | — |
| 1977 | 65° | 53° | 59° | 0.53" | — |
| 1976 | 52° | 46° | 49° | 2.29" | — |
| 1975 | 69° | 56° | 62° | — | — |
| 1974 | 56° | 35° | 45° | — | — |
| 1973 | 70° | 49° | 59° | — | — |
| 1972 | 65° | 30° | 47° | — | — |
| 1971 | 58° | 33° | 45° | — | — |
46 years of data from FONTANA 5 N