Weather on September 3
Fullerton, CA
55 Years of Data
Avg High
90°F
Avg Low
65°F
Warmest
2007
93°F avg
Coldest
1973
66°F avg
About This Date
September 3rd in Fullerton, CA typically brings hot fall weather, with average highs around 90°F and lows near 65°F — a 25°F daily swing. Over 54 years of records, the warmest September 3rd was in 2007 (93°F average), while the coldest was 1973 (66°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 6% of September 3rd dates historically. The last decade has been 2.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.4°F warmer on this date compared to 20-30 years ago.
Planning for September 3rd in Fullerton, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 94° | 71° | 82° | — | — |
| 2024 | 93° | 66° | 80° | — | — |
| 2023 | 80° | 68° | 74° | — | — |
| 2022 | 103° | 77° | 90° | — | — |
| 2021 | 86° | 62° | 74° | — | — |
| 2020 | 86° | 65° | 75° | — | — |
| 2019 | 96° | 73° | 85° | — | — |
| 2018 | 84° | 69° | 77° | — | — |
| 2017 | 97° | 74° | 85° | — | — |
| 2016 | 82° | 65° | 73° | — | — |
| 2015 | 82° | 67° | 74° | — | — |
| 2014 | 85° | 70° | 77° | — | — |
| 2013 | 95° | 73° | 84° | — | — |
| 2012 | 92° | 61° | 76° | — | — |
| 2011 | 86° | 58° | 72° | — | — |
| 2010 | 92° | 59° | 75° | — | — |
| 2009 | 100° | 71° | 86° | — | — |
| 2008 | 95° | 66° | 81° | — | — |
| 2007warmest | 107° | 78° | 93° | — | — |
| 2006 | 100° | 68° | 84° | — | — |
| 2005 | 86° | 60° | 73° | — | — |
| 2004 | 90° | 68° | 79° | — | — |
| 2003 | 90° | 65° | 77° | — | — |
| 2002 | 93° | 67° | 80° | — | — |
| 2001 | 88° | 67° | 77° | — | — |
| 2000 | 80° | 58° | 69° | — | — |
| 1999 | 75° | 62° | 69° | — | — |
| 1998 | 98° | 82° | 90° | 0.25" | — |
| 1997 | 93° | 70° | 81° | — | — |
| 1996 | 84° | 68° | 76° | — | — |
| 1995 | 96° | 69° | 83° | — | — |
| 1994 | 84° | 61° | 72° | — | — |
| 1993 | 90° | 66° | 78° | — | — |
| 1992 | 82° | 62° | 72° | — | — |
| 1991 | 88° | 63° | 75° | — | — |
| 1990 | 88° | 61° | 74° | — | — |
| 1989 | 89° | 55° | 72° | — | — |
| 1988 | 100° | 67° | 83° | — | — |
| 1987 | 86° | 66° | 76° | — | — |
| 1986 | 80° | 64° | 72° | — | — |
| 1985 | 79° | 65° | 72° | — | — |
| 1983 | 88° | 66° | 77° | — | — |
| 1982 | 106° | 64° | 85° | — | — |
| 1981 | 90° | 65° | 77° | — | — |
| 1980 | 88° | 57° | 72° | — | — |
| 1979 | 92° | 50° | 71° | — | — |
| 1978 | 92° | 60° | 76° | — | — |
| 1977 | 90° | 52° | 71° | — | — |
| 1976 | 94° | 66° | 80° | 0.03" | — |
| 1975 | 92° | 54° | 73° | — | — |
| 1974 | 93° | 59° | 76° | — | — |
| 1973coldest | 81° | 52° | 66° | — | — |
| 1972 | 80° | 58° | 69° | 0.08" | — |
| 1971 | 84° | 61° | 72° | — | — |
54 years of data from ANAHEIM