Weather on May 1
Fullerton, CA
55 Years of Data
Avg High
76°F
Avg Low
54°F
Warmest
2014
83°F avg
Coldest
1979
56°F avg
About This Date
May 1st in Fullerton, CA typically brings pleasant spring weather, with average highs around 76°F and lows near 54°F. Over 55 years of records, the warmest May 1st was in 2014 (83°F average), while the coldest was 1979 (56°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 7% of May 1st dates historically, with the wettest May 1st recording 0.53" of rain. The last decade has been 1.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.0°F warmer on this date compared to 20-30 years ago.
Planning for May 1st in Fullerton, CA? Great weather for outdoor activities.
Warming Trend
1.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 71° | 58° | 64° | — | — |
| 2024 | 72° | 60° | 66° | — | — |
| 2023 | 70° | 57° | 63° | 0.05" | — |
| 2022 | 78° | 56° | 67° | — | — |
| 2021 | 90° | 60° | 75° | — | — |
| 2020 | 79° | 62° | 70° | — | — |
| 2019 | 75° | 52° | 63° | — | — |
| 2018 | 65° | 56° | 60° | — | — |
| 2017 | 87° | 56° | 71° | — | — |
| 2016 | 74° | 56° | 65° | — | — |
| 2015 | 93° | 61° | 77° | — | — |
| 2014warmest | 101° | 65° | 83° | — | — |
| 2013 | 79° | 59° | 69° | — | — |
| 2012 | 65° | 58° | 61° | — | — |
| 2011 | 87° | 58° | 72° | — | — |
| 2010 | 73° | 51° | 62° | — | — |
| 2009 | 82° | 56° | 69° | — | — |
| 2008 | 81° | 57° | 69° | — | — |
| 2007 | 80° | 51° | 66° | — | — |
| 2006 | 78° | 59° | 69° | — | — |
| 2005 | 73° | 58° | 65° | — | — |
| 2004 | 94° | 57° | 75° | — | — |
| 2003 | 71° | 50° | 61° | — | — |
| 2002 | 69° | 50° | 60° | — | — |
| 2001 | 73° | 56° | 64° | — | — |
| 2000 | 84° | 54° | 69° | — | — |
| 1999 | 68° | 45° | 56° | — | — |
| 1998 | 71° | 58° | 64° | — | — |
| 1997 | 75° | 55° | 65° | — | — |
| 1996 | 91° | 59° | 75° | — | — |
| 1995 | 73° | 59° | 66° | — | — |
| 1994 | 69° | 55° | 62° | — | — |
| 1993 | 85° | 61° | 73° | — | — |
| 1992 | 80° | 56° | 68° | — | — |
| 1991 | 69° | 54° | 61° | — | — |
| 1990 | 71° | 52° | 61° | 0.1" | — |
| 1989 | 73° | 56° | 64° | — | — |
| 1988 | 72° | 50° | 61° | — | — |
| 1987 | 71° | 56° | 63° | — | — |
| 1986 | 78° | 56° | 67° | — | — |
| 1985 | 76° | 53° | 64° | — | — |
| 1984 | 68° | 49° | 58° | — | — |
| 1983 | 66° | 50° | 58° | 0.53" | — |
| 1982 | 75° | 45° | 60° | — | — |
| 1981 | 74° | 55° | 64° | — | — |
| 1980 | 66° | 54° | 60° | — | — |
| 1979coldest | 69° | 43° | 56° | — | — |
| 1978 | 76° | 44° | 60° | 0.05" | — |
| 1977 | 73° | 54° | 63° | — | — |
| 1976 | 88° | 49° | 68° | — | — |
| 1975 | 70° | 53° | 61° | — | — |
| 1974 | 76° | 53° | 64° | — | — |
| 1973 | 75° | 47° | 61° | — | — |
| 1972 | 80° | 47° | 63° | — | — |
| 1971 | 68° | 50° | 59° | — | — |
55 years of data from ANAHEIM