Weather on December 30
Rialto, CA
55 Years of Data
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° | — | — |
Rialto, CA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Rialto, CA Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Rialto, CA Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Rialto, CA
Rialto, CA has no months that meet our "pleasant" threshold — every season has tradeoffs.