Weather on December 19
Riverside, CA
55 Years of Data
About This Date
December 19th in Riverside, CA typically brings mild winter weather, with average highs around 67°F and lows near 42°F — a 25°F daily swing. Over 55 years of records, the warmest December 19th was in 2024 (66°F average), while the coldest was 1978 (45°F) — a 21°F range across recorded history. Rain or other precipitation has occurred on about 18% of December 19th dates historically, with the wettest December 19th recording 2.34" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for December 19th in Riverside, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 78° | 46° | 62° | — | — |
| 2024warmest | 86° | 46° | 66° | — | — |
| 2023 | 65° | 54° | 59° | 0.2" | — |
| 2022 | 66° | 37° | 52° | — | — |
| 2021 | 68° | 37° | 53° | — | — |
| 2020 | 74° | 42° | 58° | — | — |
| 2019 | 68° | 34° | 51° | — | — |
| 2018 | 74° | 46° | 60° | — | — |
| 2017 | 70° | 43° | 56° | — | — |
| 2016 | 67° | 50° | 58° | — | — |
| 2015 | 65° | 38° | 51° | 0.36" | — |
| 2014 | 68° | 43° | 55° | — | — |
| 2013 | 56° | 45° | 50° | 0.3" | — |
| 2012 | 63° | 36° | 49° | — | — |
| 2011 | 59° | 46° | 53° | — | — |
| 2010 | 64° | 55° | 60° | 1.37" | — |
| 2009 | 77° | 52° | 64° | — | — |
| 2008 | 57° | 33° | 45° | — | — |
| 2007 | 61° | 51° | 56° | 0.15" | — |
| 2006 | 57° | 35° | 46° | — | — |
| 2005 | 74° | 41° | 57° | — | — |
| 2004 | 81° | 44° | 62° | — | — |
| 2003 | 80° | 44° | 62° | — | — |
| 2002 | 65° | 34° | 49° | — | — |
| 2001 | 80° | 36° | 58° | — | — |
| 2000 | 80° | 46° | 63° | — | — |
| 1999 | 79° | 43° | 61° | — | — |
| 1998 | 59° | 50° | 55° | 0.05" | — |
| 1997 | 64° | 44° | 54° | — | — |
| 1996 | 72° | 38° | 55° | — | — |
| 1995 | 62° | 42° | 52° | — | — |
| 1994 | 78° | 37° | 58° | — | — |
| 1993 | 62° | 42° | 52° | 0.56" | — |
| 1992 | 57° | 39° | 48° | — | — |
| 1991 | 60° | 49° | 54° | 0.08" | — |
| 1990 | 56° | 39° | 47° | — | — |
| 1989 | 63° | 37° | 50° | — | — |
| 1988 | 57° | 40° | 48° | — | — |
| 1987 | 56° | 41° | 48° | — | — |
| 1986 | 63° | 48° | 55° | — | — |
| 1985 | 81° | 43° | 62° | — | — |
| 1984 | 58° | 46° | 52° | 2.34" | — |
| 1983 | 57° | 43° | 50° | — | — |
| 1982 | 77° | 41° | 59° | — | — |
| 1981 | 71° | 45° | 58° | — | — |
| 1980 | 67° | 42° | 54° | — | — |
| 1979 | 67° | 41° | 54° | — | — |
| 1978coldest | 52° | 38° | 45° | 1.12" | — |
| 1977 | 60° | 40° | 50° | — | — |
| 1976 | 66° | 42° | 54° | — | — |
| 1975 | 72° | 40° | 56° | — | — |
| 1974 | 74° | 37° | 55° | — | — |
| 1973 | 70° | 40° | 55° | — | — |
| 1972 | 78° | 41° | 60° | — | — |
| 1971 | 65° | 40° | 52° | — | — |
Riverside, CA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Riverside, CA Monthly Precipitation
Average rainfall per month, in inches.
Riverside, 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 Riverside, CA
Riverside, CA has no months that meet our "pleasant" threshold — every season has tradeoffs.