Weather on October 15
Fullerton, CA
55 Years of Data
Avg High
82°F
Avg Low
59°F
Warmest
1997
84°F avg
Coldest
1981
59°F avg
About This Date
October 15th in Fullerton, CA typically brings warm fall weather, with average highs around 82°F and lows near 59°F. Over 55 years of records, the warmest October 15th was in 1997 (84°F average), while the coldest was 1981 (59°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 7% of October 15th dates historically, with the wettest October 15th recording 1.27" of rain. The last decade has been 2.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.3°F warmer on this date compared to 20-30 years ago.
Planning for October 15th in Fullerton, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.0°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 70° | 55° | 62° | 0.43" | — |
| 2024 | 73° | 63° | 68° | — | — |
| 2023 | 91° | 62° | 77° | — | — |
| 2022 | 73° | 63° | 68° | 0.1" | — |
| 2021 | 90° | 56° | 73° | — | — |
| 2020 | 99° | 65° | 82° | — | — |
| 2019 | 89° | 56° | 72° | — | — |
| 2018 | 81° | 60° | 70° | — | — |
| 2017 | 101° | 61° | 81° | — | — |
| 2016 | 77° | 61° | 69° | — | — |
| 2015 | 89° | 72° | 80° | — | — |
| 2014 | 83° | 65° | 74° | — | — |
| 2013 | 89° | 58° | 73° | — | — |
| 2012 | 92° | 61° | 76° | — | — |
| 2011 | 78° | 62° | 70° | — | — |
| 2010 | 74° | 63° | 68° | — | — |
| 2009 | 85° | 62° | 73° | 1.27" | — |
| 2008 | 100° | 59° | 80° | — | — |
| 2007 | 73° | 58° | 65° | 0.03" | — |
| 2006 | 70° | 61° | 65° | — | — |
| 2005 | 77° | 57° | 67° | — | — |
| 2004 | 87° | 63° | 75° | — | — |
| 2003 | 80° | 63° | 71° | — | — |
| 2002 | 70° | 57° | 63° | — | — |
| 2001 | 87° | 57° | 72° | — | — |
| 2000 | 79° | 51° | 65° | — | — |
| 1999 | 82° | 61° | 71° | — | — |
| 1998 | 72° | 61° | 66° | — | — |
| 1997warmest | 100° | 68° | 84° | — | — |
| 1996 | 74° | 56° | 65° | — | — |
| 1995 | 83° | 57° | 70° | — | — |
| 1994 | 70° | 59° | 64° | — | — |
| 1993 | 76° | 62° | 69° | — | — |
| 1992 | 76° | 59° | 67° | — | — |
| 1991 | 87° | 60° | 74° | — | — |
| 1990 | 79° | 62° | 70° | — | — |
| 1989 | 73° | 59° | 66° | — | — |
| 1988 | 77° | 54° | 65° | — | — |
| 1987 | 75° | 63° | 69° | — | — |
| 1986 | 80° | 56° | 68° | — | — |
| 1985 | 91° | 72° | 81° | — | — |
| 1984 | 76° | 59° | 67° | — | — |
| 1983 | 74° | 62° | 68° | — | — |
| 1982 | 95° | 55° | 75° | — | — |
| 1981coldest | 73° | 44° | 59° | — | — |
| 1980 | 77° | 45° | 61° | — | — |
| 1979 | 80° | 50° | 65° | — | — |
| 1978 | 87° | 51° | 69° | — | — |
| 1977 | 86° | 52° | 69° | — | — |
| 1976 | 80° | 62° | 71° | — | — |
| 1975 | 91° | 53° | 72° | — | — |
| 1974 | 102° | 53° | 78° | — | — |
| 1973 | 84° | 46° | 65° | — | — |
| 1972 | 80° | 49° | 64° | — | — |
| 1971 | 71° | 58° | 64° | — | — |
55 years of data from ANAHEIM