Weather on December 14
Rialto, CA
55 Years of Data
About This Date
December 14th in Rialto, CA typically brings mild winter weather, with average highs around 64°F and lows near 43°F. Over 47 years of records, the warmest December 14th was in 2004 (68°F average), while the coldest was 2008 (41°F) — a 27°F range across recorded history. This date has historically been dry, with little recorded precipitation.
Planning for December 14th in Rialto, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 81° | 48° | 64° | — | — |
| 2016 | 73° | 51° | 62° | — | — |
| 2015 | 52° | 38° | 45° | — | — |
| 2014 | 60° | 43° | 51° | — | — |
| 2013 | 64° | 55° | 60° | — | — |
| 2012 | 50° | 40° | 45° | — | — |
| 2011 | 56° | 37° | 46° | — | — |
| 2010 | 69° | 47° | 58° | — | — |
| 2009 | 60° | 41° | 51° | — | — |
| 2008coldest | 49° | 34° | 41° | — | — |
| 2007 | 61° | 45° | 53° | — | — |
| 2006 | 76° | 53° | 64° | — | — |
| 2005 | 72° | 45° | 58° | — | — |
| 2004warmest | 78° | 58° | 68° | — | — |
| 2003 | 53° | 37° | 45° | — | — |
| 2002 | 66° | 49° | 57° | — | — |
| 2001 | 46° | 39° | 43° | — | — |
| 2000 | 52° | 43° | 47° | — | — |
| 1999 | 59° | 48° | 54° | — | — |
| 1998 | 66° | 44° | 55° | — | — |
| 1997 | 70° | 42° | 56° | — | — |
| 1996 | 60° | 58° | 59° | — | — |
| 1995 | 69° | 43° | 56° | — | — |
| 1994 | 54° | 38° | 46° | — | — |
| 1993 | 53° | 38° | 45° | — | — |
| 1992 | 58° | 37° | 47° | — | — |
| 1991 | 65° | 50° | 57° | — | — |
| 1990 | 60° | 41° | 51° | — | — |
| 1989 | 72° | 39° | 55° | — | — |
| 1988 | 59° | 41° | 50° | — | — |
| 1987 | 52° | 41° | 46° | — | — |
| 1986 | 66° | 42° | 54° | — | — |
| 1985 | 66° | 34° | 50° | — | — |
| 1984 | 59° | 45° | 52° | — | — |
| 1983 | 79° | 42° | 60° | — | — |
| 1982 | 70° | 35° | 52° | — | — |
| 1981 | 77° | 42° | 60° | — | — |
| 1980 | 80° | 42° | 61° | — | — |
| 1979 | 72° | 38° | 55° | — | — |
| 1978 | 76° | 37° | 56° | — | — |
| 1977 | 82° | 44° | 63° | — | — |
| 1976 | 78° | 40° | 59° | — | — |
| 1975 | 50° | 44° | 47° | — | — |
| 1974 | 74° | 43° | 58° | — | — |
| 1973 | 58° | 48° | 53° | — | — |
| 1972 | 65° | 28° | 46° | — | — |
| 1971 | 59° | 36° | 47° | — | — |
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.