Weather on December 23
Fullerton, CA
55 Years of Data
About This Date
December 23rd in Fullerton, CA typically brings mild winter weather, with average highs around 68°F and lows near 46°F. Over 55 years of records, the warmest December 23rd was in 1989 (68°F average), while the coldest was 1974 (45°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 20% of December 23rd dates historically, with the wettest December 23rd recording 2.21" of rain. The last decade has been 2.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.0°F warmer on this date compared to 20-30 years ago.
Planning for December 23rd in Fullerton, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 64° | 57° | 61° | 0.36" | — |
| 2024 | 69° | 49° | 59° | — | — |
| 2023 | 66° | 54° | 60° | — | — |
| 2022 | 74° | 48° | 61° | — | — |
| 2021 | 66° | 54° | 60° | 0.91" | — |
| 2020 | 75° | 48° | 62° | — | — |
| 2019 | 64° | 50° | 57° | 2.21" | — |
| 2018 | 68° | 46° | 57° | — | — |
| 2017 | 68° | 45° | 56° | — | — |
| 2016 | 61° | 56° | 58° | 0.03" | — |
| 2015 | 66° | 54° | 60° | — | — |
| 2014 | 83° | 50° | 66° | — | — |
| 2013 | 80° | 48° | 64° | — | — |
| 2012 | 64° | 52° | 58° | — | — |
| 2011 | 71° | 38° | 54° | — | — |
| 2010 | 65° | 51° | 58° | — | — |
| 2009 | 65° | 39° | 52° | — | — |
| 2008 | 59° | 40° | 49° | — | — |
| 2007 | 80° | 51° | 66° | — | — |
| 2006 | 78° | 45° | 61° | — | — |
| 2005 | 75° | 56° | 65° | — | — |
| 2004 | 70° | 55° | 62° | — | — |
| 2003 | 72° | 55° | 63° | 0.03" | — |
| 2002 | 62° | 38° | 50° | — | — |
| 2001 | 66° | 43° | 54° | — | — |
| 2000 | 76° | 38° | 57° | — | — |
| 1999 | 79° | 49° | 64° | — | — |
| 1998 | 58° | 32° | 45° | — | — |
| 1997 | 64° | 40° | 52° | — | — |
| 1996 | 69° | 48° | 59° | — | — |
| 1995 | 63° | 46° | 54° | 0.79" | — |
| 1994 | 71° | 60° | 66° | — | — |
| 1993 | 69° | 45° | 57° | — | — |
| 1992 | 76° | 51° | 63° | — | — |
| 1991 | 71° | 48° | 60° | — | — |
| 1990 | 52° | 40° | 46° | — | — |
| 1989warmest | 84° | 51° | 68° | — | — |
| 1988 | 61° | 45° | 53° | 0.46" | — |
| 1987 | 61° | 44° | 52° | — | — |
| 1986 | 65° | 49° | 57° | 0.1" | — |
| 1985 | 69° | 46° | 58° | — | — |
| 1984 | 69° | 40° | 54° | — | — |
| 1983 | 64° | 45° | 54° | — | — |
| 1982 | 61° | 50° | 55° | 1.07" | — |
| 1981 | 71° | 36° | 53° | — | — |
| 1980 | 76° | 44° | 60° | — | — |
| 1979 | 64° | 32° | 48° | — | — |
| 1978 | 65° | 39° | 52° | — | — |
| 1977 | 66° | 57° | 62° | 0.05" | — |
| 1976 | 66° | 42° | 54° | — | — |
| 1975 | 70° | 36° | 53° | — | — |
| 1974coldest | 59° | 30° | 45° | — | — |
| 1973 | 64° | 40° | 52° | — | — |
| 1972 | 73° | 47° | 60° | — | — |
| 1971 | 64° | 50° | 57° | 0.08" | — |
Fullerton, CA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Fullerton, CA Monthly Precipitation
Average rainfall per month, in inches.
Fullerton, 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 Fullerton, CA
Fullerton, CA has no months that meet our "pleasant" threshold — every season has tradeoffs.