Weather on December 16
Fullerton, CA
55 Years of Data
Avg High
71°F
Avg Low
48°F
Warmest
1980
73°F avg
Coldest
1971
51°F avg
About This Date
December 16th in Fullerton, CA typically brings pleasant winter weather, with average highs around 71°F and lows near 48°F. Over 55 years of records, the warmest December 16th was in 1980 (73°F average), while the coldest was 1971 (51°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 16% of December 16th dates historically, with the wettest December 16th recording 3.2" of rain. The last decade has been 2.6°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.6°F cooler on this date compared to 20-30 years ago.
Planning for December 16th in Fullerton, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 70° | 47° | 58° | — | — |
| 2024 | 72° | 48° | 60° | — | — |
| 2023 | 82° | 58° | 70° | — | — |
| 2022 | 74° | 49° | 61° | — | — |
| 2021 | 61° | 41° | 51° | — | — |
| 2020 | 74° | 45° | 59° | — | — |
| 2019 | 69° | 45° | 57° | — | — |
| 2018 | 74° | 45° | 59° | — | — |
| 2017 | 76° | 51° | 63° | — | — |
| 2016 | 63° | 54° | 58° | 3.2" | — |
| 2015 | 63° | 45° | 54° | — | — |
| 2014 | 63° | 54° | 58° | — | — |
| 2013 | 86° | 58° | 72° | — | — |
| 2012 | 58° | 52° | 55° | 0.03" | — |
| 2011 | 69° | 46° | 58° | 0.05" | — |
| 2010 | 64° | 53° | 59° | 0.23" | — |
| 2009 | 77° | 49° | 63° | — | — |
| 2008 | 61° | 43° | 52° | 0.15" | — |
| 2007 | 70° | 47° | 58° | — | — |
| 2006 | 61° | 55° | 58° | 0.08" | — |
| 2005 | 66° | 45° | 55° | — | — |
| 2004 | 77° | 59° | 68° | — | — |
| 2003 | 71° | 55° | 63° | — | — |
| 2002 | 61° | 49° | 55° | 2.11" | — |
| 2001 | 68° | 38° | 53° | — | — |
| 2000 | 80° | 42° | 61° | — | — |
| 1999 | 81° | 49° | 65° | — | — |
| 1998 | 86° | 60° | 73° | — | — |
| 1997 | 76° | 52° | 64° | — | — |
| 1996 | 78° | 52° | 65° | — | — |
| 1995 | 68° | 46° | 57° | — | — |
| 1994 | 76° | 44° | 60° | — | — |
| 1993 | 64° | 43° | 53° | — | — |
| 1992 | 68° | 42° | 55° | — | — |
| 1991 | 79° | 54° | 66° | — | — |
| 1990 | 61° | 42° | 51° | — | — |
| 1989 | 66° | 44° | 55° | — | — |
| 1988 | 58° | 50° | 54° | 2.87" | — |
| 1987 | 56° | 46° | 51° | 0.81" | — |
| 1986 | 71° | 64° | 68° | — | — |
| 1985 | 82° | 50° | 66° | — | — |
| 1984 | 60° | 45° | 52° | — | — |
| 1983 | 66° | 48° | 57° | — | — |
| 1982 | 75° | 39° | 57° | — | — |
| 1981 | 74° | 43° | 58° | — | — |
| 1980warmest | 89° | 57° | 73° | — | — |
| 1979 | 80° | 35° | 58° | — | — |
| 1978 | 68° | 41° | 55° | — | — |
| 1977 | 69° | 48° | 59° | — | — |
| 1976 | 80° | 54° | 67° | — | — |
| 1975 | 66° | 36° | 51° | — | — |
| 1974 | 83° | 44° | 63° | — | — |
| 1973 | 78° | 44° | 61° | — | — |
| 1972 | 73° | 56° | 64° | — | — |
| 1971coldest | 69° | 33° | 51° | — | — |
55 years of data from ANAHEIM