Weather on April 15
Fullerton, CA
55 Years of Data
Avg High
74°F
Avg Low
51°F
Warmest
2011
73°F avg
Coldest
1976
47°F avg
About This Date
April 15th in Fullerton, CA typically brings pleasant spring weather, with average highs around 74°F and lows near 51°F. Over 55 years of records, the warmest April 15th was in 2011 (73°F average), while the coldest was 1976 (47°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 13% of April 15th dates historically, with the wettest April 15th recording 1.57" of rain. The last decade has been 1.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.5°F warmer on this date compared to 20-30 years ago.
Planning for April 15th in Fullerton, CA? Great weather for outdoor activities.
Warming Trend
1.0°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 66° | 56° | 61° | — | — |
| 2024 | 69° | 50° | 60° | — | — |
| 2023 | 74° | 50° | 62° | — | — |
| 2022 | 78° | 53° | 66° | — | — |
| 2021 | 70° | 49° | 59° | — | — |
| 2020 | 82° | 53° | 68° | — | — |
| 2019 | 76° | 51° | 63° | — | — |
| 2018 | 85° | 56° | 70° | — | — |
| 2017 | 78° | 50° | 64° | — | — |
| 2016 | 81° | 55° | 68° | — | — |
| 2015 | 86° | 53° | 70° | — | — |
| 2014 | 82° | 54° | 68° | — | — |
| 2013 | 65° | 56° | 60° | — | — |
| 2012 | 71° | 50° | 61° | — | — |
| 2011warmest | 94° | 52° | 73° | — | — |
| 2010 | 74° | 50° | 62° | — | — |
| 2009 | 64° | 46° | 55° | — | — |
| 2008 | 81° | 56° | 68° | — | — |
| 2007 | 69° | 53° | 61° | — | — |
| 2006 | 67° | 56° | 61° | 0.36" | — |
| 2005 | 82° | 51° | 67° | — | — |
| 2004 | 74° | 55° | 64° | — | — |
| 2003 | 65° | 48° | 56° | 1.22" | — |
| 2002 | 70° | 55° | 62° | 0.28" | — |
| 2001 | 71° | 45° | 58° | — | — |
| 2000 | 69° | 55° | 62° | — | — |
| 1999 | 90° | 50° | 70° | — | — |
| 1998 | 62° | 46° | 54° | — | — |
| 1997 | 79° | 51° | 65° | — | — |
| 1996 | 83° | 53° | 68° | — | — |
| 1995 | 65° | 45° | 55° | — | — |
| 1994 | 76° | 57° | 66° | — | — |
| 1993 | 72° | 56° | 64° | — | — |
| 1992 | 68° | 53° | 61° | — | — |
| 1991 | 66° | 54° | 60° | — | — |
| 1990 | 71° | 58° | 64° | — | — |
| 1989 | 73° | 59° | 66° | — | — |
| 1988 | 67° | 48° | 57° | 1.57" | — |
| 1987 | 89° | 56° | 72° | — | — |
| 1986 | 72° | 50° | 61° | — | — |
| 1985 | 73° | 55° | 64° | — | — |
| 1984 | 85° | 53° | 69° | — | — |
| 1983 | 73° | 42° | 58° | — | — |
| 1982 | 69° | 45° | 57° | — | — |
| 1981 | 77° | 49° | 63° | — | — |
| 1980 | 89° | 50° | 70° | — | — |
| 1979 | 78° | 44° | 61° | — | — |
| 1978 | 65° | 53° | 59° | 0.48" | — |
| 1977 | 75° | 45° | 60° | — | — |
| 1976coldest | 60° | 34° | 47° | 0.2" | — |
| 1975 | 59° | 45° | 52° | 0.38" | — |
| 1974 | 82° | 49° | 65° | — | — |
| 1973 | 64° | 42° | 53° | — | — |
| 1972 | 79° | 42° | 60° | — | — |
| 1971 | 71° | 47° | 59° | — | — |
55 years of data from ANAHEIM