Weather on December 1
Fullerton, CA
55 Years of Data
Avg High
72°F
Avg Low
48°F
Warmest
1988
70°F avg
Coldest
1973
49°F avg
About This Date
December 1st in Fullerton, CA typically brings pleasant winter weather, with average highs around 72°F and lows near 48°F. Over 55 years of records, the warmest December 1st was in 1988 (70°F average), while the coldest was 1973 (49°F) — a 21°F range across recorded history. Rain or other precipitation has occurred on about 11% of December 1st dates historically, with the wettest December 1st recording 0.89" of rain. The last decade has been 4.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.1°F warmer on this date compared to 20-30 years ago.
Planning for December 1st in Fullerton, CA? Great weather for outdoor activities.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 75° | 51° | 63° | — | — |
| 2024 | 74° | 52° | 63° | — | — |
| 2023 | 68° | 44° | 56° | — | — |
| 2022 | 63° | 55° | 59° | — | — |
| 2021 | 79° | 51° | 65° | — | — |
| 2020 | 77° | 48° | 63° | — | — |
| 2019 | 67° | 52° | 59° | — | — |
| 2018 | 66° | 50° | 58° | — | — |
| 2017 | 79° | 51° | 65° | — | — |
| 2016 | 71° | 48° | 60° | — | — |
| 2015 | 77° | 45° | 61° | — | — |
| 2014 | 71° | 57° | 64° | 0.89" | — |
| 2013 | 84° | 50° | 67° | — | — |
| 2012 | 67° | 60° | 63° | — | — |
| 2011 | 70° | 49° | 59° | — | — |
| 2010 | 77° | 47° | 62° | — | — |
| 2009 | 77° | 46° | 62° | — | — |
| 2008 | 76° | 50° | 63° | — | — |
| 2007 | 59° | 53° | 56° | 0.15" | — |
| 2006 | 76° | 46° | 61° | — | — |
| 2005 | 69° | 48° | 59° | — | — |
| 2004 | 69° | 39° | 54° | — | — |
| 2003 | 70° | 47° | 58° | — | — |
| 2002 | 68° | 47° | 57° | — | — |
| 2001 | 67° | 43° | 55° | — | — |
| 2000 | 76° | 45° | 60° | — | — |
| 1999 | 70° | 50° | 60° | — | — |
| 1998 | 60° | 50° | 55° | 0.13" | — |
| 1997 | 68° | 48° | 58° | — | — |
| 1996 | 66° | 42° | 54° | — | — |
| 1995 | 78° | 48° | 63° | — | — |
| 1994 | 79° | 49° | 64° | — | — |
| 1993 | 74° | 49° | 61° | — | — |
| 1992 | 78° | 47° | 62° | — | — |
| 1991 | 63° | 37° | 50° | — | — |
| 1990 | 73° | 45° | 59° | — | — |
| 1989 | 78° | 48° | 63° | — | — |
| 1988warmest | 85° | 55° | 70° | — | — |
| 1987 | 69° | 45° | 57° | — | — |
| 1986 | 78° | 46° | 62° | — | — |
| 1985 | 65° | 45° | 55° | — | — |
| 1984 | 71° | 49° | 60° | — | — |
| 1983 | 67° | 57° | 62° | 0.3" | — |
| 1982 | 63° | 50° | 56° | — | — |
| 1981 | 76° | 38° | 57° | — | — |
| 1980 | 69° | 48° | 59° | — | — |
| 1979 | 86° | 50° | 68° | — | — |
| 1978 | 64° | 46° | 55° | 0.05" | — |
| 1977 | 83° | 53° | 68° | — | — |
| 1976 | 83° | 47° | 65° | — | — |
| 1975 | 79° | 45° | 62° | — | — |
| 1974 | 64° | 42° | 53° | — | — |
| 1973coldest | 57° | 41° | 49° | 0.79" | — |
| 1972 | 81° | 46° | 63° | — | — |
| 1971 | 75° | 37° | 56° | — | — |
55 years of data from ANAHEIM