Weather on January 17
Fullerton, CA
55 Years of Data
About This Date
January 17th in Fullerton, CA typically brings pleasant winter weather, with average highs around 71°F and lows near 48°F. Over 56 years of records, the warmest January 17th was in 2014 (80°F average), while the coldest was 1988 (46°F) — a 34°F range across recorded history. Rain or other precipitation has occurred on about 23% of January 17th dates historically, with the wettest January 17th recording 4.98" 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 17th in Fullerton, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 83° | 53° | 68° | — | — |
| 2025 | 61° | 45° | 53° | — | — |
| 2024 | 61° | 51° | 56° | — | — |
| 2023 | 63° | 44° | 53° | — | — |
| 2022 | 73° | 59° | 66° | 0.2" | — |
| 2021 | 88° | 58° | 73° | — | — |
| 2020 | 65° | 48° | 56° | 0.76" | — |
| 2019 | 62° | 58° | 60° | 4.98" | — |
| 2018 | 82° | 53° | 68° | — | — |
| 2017 | 70° | 43° | 56° | — | — |
| 2016 | 72° | 48° | 60° | — | — |
| 2015 | 79° | 48° | 63° | — | — |
| 2014warmest | 90° | 70° | 80° | — | — |
| 2013 | 79° | 51° | 65° | — | — |
| 2012 | 61° | 44° | 52° | — | — |
| 2011 | 83° | 54° | 68° | — | — |
| 2010 | 67° | 49° | 58° | 0.03" | — |
| 2009 | 83° | 46° | 64° | — | — |
| 2008 | 71° | 43° | 57° | — | — |
| 2007 | 65° | 39° | 52° | — | — |
| 2006 | 70° | 42° | 56° | — | — |
| 2005 | 85° | 55° | 70° | — | — |
| 2004 | 68° | 49° | 58° | — | — |
| 2003 | 81° | 53° | 67° | — | — |
| 2002 | 64° | 41° | 53° | — | — |
| 2001 | 62° | 42° | 52° | — | — |
| 2000 | 74° | 57° | 65° | — | — |
| 1999 | 68° | 52° | 60° | — | — |
| 1998 | 71° | 50° | 61° | — | — |
| 1997 | 76° | 56° | 66° | — | — |
| 1996 | 68° | 54° | 61° | 1.09" | — |
| 1995 | 61° | 38° | 49° | — | — |
| 1994 | 83° | 43° | 63° | — | — |
| 1993 | 60° | 56° | 58° | 0.81" | — |
| 1992 | 75° | 46° | 61° | — | — |
| 1991 | 75° | 52° | 63° | — | — |
| 1990 | 58° | 42° | 50° | 1.32" | — |
| 1989 | 78° | 43° | 60° | — | — |
| 1988coldest | 57° | 36° | 46° | 3.61" | — |
| 1987 | 60° | 33° | 47° | — | — |
| 1986 | 83° | 43° | 63° | — | — |
| 1985 | 73° | 42° | 58° | — | — |
| 1984 | 64° | 40° | 52° | 0.36" | — |
| 1983 | 66° | 51° | 59° | — | — |
| 1982 | 66° | 35° | 51° | — | — |
| 1981 | 73° | 45° | 59° | — | — |
| 1980 | 62° | 54° | 58° | — | — |
| 1979 | 64° | 45° | 54° | 0.3" | — |
| 1978 | 65° | 48° | 56° | 1.7" | — |
| 1977 | 82° | 51° | 67° | — | — |
| 1976 | 91° | 60° | 76° | — | — |
| 1975 | 89° | 37° | 63° | — | — |
| 1974 | 60° | 53° | 57° | 0.53" | — |
| 1973 | 63° | 44° | 53° | 1.88" | — |
| 1972 | 64° | 38° | 51° | — | — |
| 1971 | 82° | 50° | 66° | — | — |
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.