Weather on January 1
Fullerton, CA
55 Years of Data
About This Date
January 1st in Fullerton, CA typically brings mild winter weather, with average highs around 68°F and lows near 46°F. Over 56 years of records, the warmest January 1st was in 1996 (71°F average), while the coldest was 2015 (46°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 16% of January 1st dates historically, with the wettest January 1st recording 2.79" 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 January 1st in Fullerton, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 66° | 55° | 61° | 2.69" | — |
| 2025 | 65° | 43° | 54° | — | — |
| 2024 | 70° | 52° | 61° | — | — |
| 2023 | 63° | 51° | 57° | 2.79" | — |
| 2022 | 66° | 47° | 56° | — | — |
| 2021 | 72° | 50° | 61° | — | — |
| 2020 | 72° | 47° | 59° | — | — |
| 2019 | 62° | 49° | 55° | — | — |
| 2018 | 73° | 46° | 60° | — | — |
| 2017 | 59° | 41° | 50° | 1.32" | — |
| 2016 | 70° | 52° | 61° | — | — |
| 2015coldest | 59° | 34° | 46° | — | — |
| 2014 | 74° | 43° | 58° | — | — |
| 2013 | 63° | 42° | 52° | — | — |
| 2012 | 82° | 44° | 63° | — | — |
| 2011 | 62° | 42° | 52° | — | — |
| 2010 | 75° | 50° | 63° | — | — |
| 2009 | 67° | 42° | 54° | — | — |
| 2008 | 72° | 61° | 66° | — | — |
| 2007 | 70° | 44° | 57° | — | — |
| 2006 | 65° | 52° | 58° | 0.18" | — |
| 2005 | 57° | 43° | 50° | — | — |
| 2004 | 67° | 42° | 54° | — | — |
| 2003 | 74° | 45° | 59° | — | — |
| 2002 | 66° | 48° | 57° | — | — |
| 2001 | 79° | 45° | 62° | — | — |
| 2000 | 59° | 44° | 52° | 0.23" | — |
| 1999 | 71° | 42° | 57° | — | — |
| 1998 | 75° | 50° | 63° | — | — |
| 1997 | 67° | 55° | 61° | 0.03" | — |
| 1996warmest | 77° | 65° | 71° | — | — |
| 1995 | 68° | 45° | 56° | — | — |
| 1994 | 69° | 45° | 57° | — | — |
| 1993 | 65° | 42° | 53° | — | — |
| 1992 | 68° | 47° | 57° | — | — |
| 1991 | 73° | 43° | 58° | — | — |
| 1990 | 70° | 42° | 56° | — | — |
| 1989 | 65° | 44° | 54° | 0.48" | — |
| 1988 | 69° | 45° | 57° | — | — |
| 1987 | 67° | 46° | 56° | — | — |
| 1986 | 66° | 54° | 60° | — | — |
| 1985 | 75° | 50° | 63° | — | — |
| 1984 | 76° | 51° | 63° | — | — |
| 1983 | 66° | 38° | 52° | — | — |
| 1982 | 62° | 46° | 54° | 2.18" | — |
| 1981 | 81° | 46° | 63° | — | — |
| 1980 | 74° | 44° | 59° | — | — |
| 1979 | 64° | 35° | 50° | — | — |
| 1978 | 68° | 43° | 55° | — | — |
| 1977 | 64° | 43° | 53° | — | — |
| 1976 | 60° | 34° | 47° | — | — |
| 1975 | 65° | 29° | 47° | — | — |
| 1974 | 59° | 46° | 53° | 0.56" | — |
| 1973 | 62° | 41° | 52° | — | — |
| 1972 | 78° | 42° | 60° | — | — |
| 1971 | 67° | 42° | 54° | — | — |
Fullerton, CA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Fullerton, CA Monthly Precipitation
Average rainfall per month, in inches.
Fullerton, CA Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Fullerton, CA
Fullerton, CA has no months that meet our "pleasant" threshold — every season has tradeoffs.