Weather on December 30
Fullerton, CA
55 Years of Data
Avg High
68°F
Avg Low
46°F
Warmest
2025
71°F avg
Coldest
1974
46°F avg
About This Date
December 30th 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 30th was in 2025 (71°F average), while the coldest was 1974 (46°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 25% of December 30th dates historically, with the wettest December 30th 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 30th in Fullerton, CA? Great weather for outdoor activities.
Warming Trend
1.0°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025warmest | 75° | 67° | 71° | — | — |
| 2024 | 64° | 51° | 58° | — | — |
| 2023 | 64° | 55° | 60° | 0.86" | — |
| 2022 | 62° | 54° | 58° | 0.03" | — |
| 2021 | 56° | 50° | 53° | 2.34" | — |
| 2020 | 71° | 45° | 58° | — | — |
| 2019 | 61° | 48° | 54° | — | — |
| 2018 | 65° | 41° | 53° | — | — |
| 2017 | 81° | 48° | 64° | — | — |
| 2016 | 78° | 56° | 67° | 0.41" | — |
| 2015 | 67° | 41° | 54° | — | — |
| 2014 | 58° | 46° | 52° | 0.03" | — |
| 2013 | 78° | 47° | 62° | — | — |
| 2012 | 58° | 39° | 48° | 0.38" | — |
| 2011 | 73° | 48° | 61° | — | — |
| 2010 | 56° | 42° | 49° | — | — |
| 2009 | 63° | 47° | 55° | 0.05" | — |
| 2008 | 75° | 47° | 61° | — | — |
| 2007 | 64° | 42° | 53° | — | — |
| 2006 | 69° | 42° | 56° | — | — |
| 2005 | 70° | 48° | 59° | — | — |
| 2004 | 64° | 47° | 55° | — | — |
| 2003 | 66° | 49° | 57° | — | — |
| 2002 | 64° | 41° | 53° | — | — |
| 2001 | 67° | 51° | 59° | 0.23" | — |
| 2000 | 78° | 42° | 60° | — | — |
| 1999 | 71° | 42° | 57° | — | — |
| 1998 | 76° | 45° | 60° | — | — |
| 1997 | 84° | 55° | 70° | — | — |
| 1996 | 65° | 53° | 59° | — | — |
| 1995 | 69° | 49° | 59° | — | — |
| 1994 | 61° | 41° | 51° | — | — |
| 1993 | 75° | 51° | 63° | — | — |
| 1992 | 61° | 47° | 54° | 0.18" | — |
| 1991 | 64° | 46° | 55° | 0.84" | — |
| 1990 | 64° | 41° | 53° | — | — |
| 1989 | 74° | 41° | 57° | — | — |
| 1988 | 61° | 38° | 49° | — | — |
| 1987 | 57° | 38° | 47° | 0.18" | — |
| 1986 | 73° | 43° | 58° | — | — |
| 1985 | 72° | 55° | 63° | — | — |
| 1984 | 68° | 43° | 55° | — | — |
| 1983 | 76° | 44° | 60° | — | — |
| 1982 | 63° | 48° | 55° | — | — |
| 1981 | 60° | 45° | 52° | 1.37" | — |
| 1980 | 88° | — | — | — | — |
| 1979 | 71° | 42° | 57° | — | — |
| 1978 | 69° | 39° | 54° | — | — |
| 1977 | 67° | 57° | 62° | 0.38" | — |
| 1976 | 58° | 44° | 51° | 1.73" | — |
| 1975 | 69° | 41° | 55° | — | — |
| 1974coldest | 59° | 33° | 46° | — | — |
| 1973 | 65° | 42° | 53° | — | — |
| 1972 | 68° | 37° | 53° | — | — |
| 1971 | 65° | 34° | 49° | — | — |
55 years of data from ANAHEIM