Weather on December 22
Fullerton, CA
55 Years of Data
Avg High
68°F
Avg Low
46°F
Warmest
1999
66°F avg
Coldest
1990
43°F avg
About This Date
December 22nd 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 22nd was in 1999 (66°F average), while the coldest was 1990 (43°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 25% of December 22nd dates historically, with the wettest December 22nd recording 6.48" of rain. The last decade has been 2.9°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.9°F warmer on this date compared to 20-30 years ago.
Planning for December 22nd in Fullerton, CA? Great weather for outdoor activities.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 68° | 49° | 58° | — | — |
| 2024 | 66° | 49° | 57° | — | — |
| 2023 | 67° | 58° | 62° | 1.17" | — |
| 2022 | 74° | 49° | 61° | — | — |
| 2021 | 71° | 49° | 60° | — | — |
| 2020 | 79° | 46° | 62° | — | — |
| 2019 | 70° | 53° | 61° | — | — |
| 2018 | 72° | 47° | 59° | — | — |
| 2017 | 72° | 39° | 55° | — | — |
| 2016 | 66° | 54° | 60° | 2.67" | — |
| 2015 | 62° | 53° | 58° | 0.48" | — |
| 2014 | 78° | 49° | 63° | — | — |
| 2013 | 73° | 44° | 59° | — | — |
| 2012 | 64° | 41° | 53° | — | — |
| 2011 | 64° | 45° | 54° | — | — |
| 2010 | 62° | 54° | 58° | 6.48" | — |
| 2009 | 65° | 52° | 58° | 0.43" | — |
| 2008 | 62° | 46° | 54° | 0.41" | — |
| 2007 | 70° | 45° | 57° | 0.08" | — |
| 2006 | 70° | 46° | 58° | 0.08" | — |
| 2005 | 77° | 53° | 65° | — | — |
| 2004 | 70° | 47° | 58° | — | — |
| 2003 | 76° | 46° | 61° | — | — |
| 2002 | 62° | 48° | 55° | 0.13" | — |
| 2001 | 63° | 42° | 52° | — | — |
| 2000 | 70° | 38° | 54° | — | — |
| 1999warmest | 75° | 57° | 66° | — | — |
| 1998 | 57° | 37° | 47° | — | — |
| 1997 | 65° | 36° | 50° | — | — |
| 1996 | 61° | 55° | 58° | 0.38" | — |
| 1995 | 65° | 47° | 56° | 0.69" | — |
| 1994 | 71° | 51° | 61° | — | — |
| 1993 | 74° | 39° | 56° | — | — |
| 1992 | 71° | 39° | 55° | — | — |
| 1991 | 70° | 44° | 57° | — | — |
| 1990coldest | 50° | 36° | 43° | — | — |
| 1989 | 78° | 44° | 61° | — | — |
| 1988 | 60° | 40° | 50° | — | — |
| 1987 | 66° | 45° | 55° | — | — |
| 1986 | 73° | 45° | 59° | — | — |
| 1985 | 74° | 44° | 59° | — | — |
| 1984 | 71° | 48° | 60° | — | — |
| 1983 | 63° | 47° | 55° | — | — |
| 1982 | 60° | 54° | 57° | 1.47" | — |
| 1981 | 74° | 39° | 56° | — | — |
| 1980 | 70° | 42° | 56° | — | — |
| 1979 | 65° | 32° | 48° | — | — |
| 1978 | 69° | 39° | 54° | — | — |
| 1977 | 70° | 56° | 63° | — | — |
| 1976 | 76° | 39° | 57° | — | — |
| 1975 | 66° | 40° | 53° | — | — |
| 1974 | 69° | 43° | 56° | — | — |
| 1973 | 63° | 45° | 54° | 0.61" | — |
| 1972 | 70° | 46° | 58° | — | — |
| 1971 | 58° | 47° | 52° | 4.78" | — |
55 years of data from ANAHEIM