Weather on December 23
Fullerton, CA
55 Years of Data
Avg High
68°F
Avg Low
46°F
Warmest
1989
68°F avg
Coldest
1974
45°F avg
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.
Warming Trend
1.2°F per decade on this date
| 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" | — |
55 years of data from ANAHEIM