Weather on May 9
Fullerton, CA
55 Years of Data
Avg High
76°F
Avg Low
56°F
Warmest
2007
78°F avg
Coldest
1977
54°F avg
About This Date
May 9th in Fullerton, CA typically brings pleasant spring weather, with average highs around 76°F and lows near 56°F. Over 55 years of records, the warmest May 9th was in 2007 (78°F average), while the coldest was 1977 (54°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 4% of May 9th dates historically, with the wettest May 9th recording 1.98" of rain. The last decade has been 1.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.2°F warmer on this date compared to 20-30 years ago.
Planning for May 9th in Fullerton, CA? Great weather for outdoor activities.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 92° | 60° | 76° | — | — |
| 2024 | 76° | 58° | 67° | — | — |
| 2023 | 71° | 57° | 64° | — | — |
| 2022 | 72° | 53° | 62° | — | — |
| 2021 | 76° | 59° | 67° | — | — |
| 2020 | 79° | 62° | 70° | — | — |
| 2019 | 69° | 59° | 64° | — | — |
| 2018 | 82° | 59° | 71° | — | — |
| 2017 | 74° | 59° | 66° | — | — |
| 2016 | 73° | 56° | 64° | — | — |
| 2015 | 70° | 56° | 63° | — | — |
| 2014 | 73° | 56° | 64° | — | — |
| 2013 | 73° | 56° | 64° | — | — |
| 2012 | 82° | 56° | 69° | — | — |
| 2011 | 67° | 55° | 61° | — | — |
| 2010 | 77° | 57° | 67° | — | — |
| 2009 | 81° | 59° | 70° | — | — |
| 2008 | 72° | 57° | 64° | — | — |
| 2007warmest | 96° | 61° | 78° | — | — |
| 2006 | 79° | 59° | 69° | — | — |
| 2005 | 72° | 55° | 63° | — | — |
| 2004 | 84° | 58° | 71° | — | — |
| 2003 | 71° | 54° | 62° | — | — |
| 2002 | 76° | 53° | 64° | — | — |
| 2001 | 86° | 58° | 72° | — | — |
| 2000 | 76° | 59° | 67° | — | — |
| 1999 | 63° | 62° | 62° | — | — |
| 1998 | 67° | 58° | 62° | — | — |
| 1997 | 82° | 57° | 70° | — | — |
| 1996 | 77° | 56° | 66° | — | — |
| 1995 | 70° | 48° | 59° | — | — |
| 1994 | 71° | 52° | 61° | — | — |
| 1993 | 95° | 57° | 76° | — | — |
| 1992 | 72° | 61° | 66° | — | — |
| 1991 | 74° | 57° | 65° | — | — |
| 1990 | 73° | 58° | 65° | — | — |
| 1989 | 76° | 60° | 68° | — | — |
| 1988 | 77° | 51° | 64° | — | — |
| 1987 | 76° | 62° | 69° | — | — |
| 1986 | 80° | 53° | 67° | — | — |
| 1985 | 65° | 55° | 60° | — | — |
| 1984 | 88° | 58° | 73° | — | — |
| 1983 | 73° | 57° | 65° | — | — |
| 1982 | 66° | 50° | 58° | — | — |
| 1981 | 93° | 48° | 71° | — | — |
| 1980 | 71° | 56° | 63° | — | — |
| 1979 | 72° | 48° | 60° | — | — |
| 1978 | 85° | 52° | 68° | — | — |
| 1977coldest | 60° | 49° | 54° | 1.98" | — |
| 1976 | 79° | 52° | 65° | — | — |
| 1975 | 82° | 49° | 65° | — | — |
| 1974 | 67° | 55° | 61° | — | — |
| 1973 | 85° | 49° | 67° | — | — |
| 1972 | 78° | 49° | 63° | — | — |
| 1971 | 73° | 45° | 59° | 0.03" | — |
55 years of data from ANAHEIM