Weather on August 1
Fullerton, CA
55 Years of Data
Avg High
88°F
Avg Low
64°F
Warmest
2018
85°F avg
Coldest
1975
70°F avg
About This Date
August 1st in Fullerton, CA typically brings warm summer weather, with average highs around 88°F and lows near 64°F. Over 55 years of records, the warmest August 1st was in 2018 (85°F average), while the coldest was 1975 (70°F) — a 15°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 4.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.7°F warmer on this date compared to 20-30 years ago.
Planning for August 1st in Fullerton, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 82° | 65° | 73° | — | — |
| 2024 | 84° | 65° | 74° | — | — |
| 2023 | 92° | 74° | 83° | — | — |
| 2022 | 95° | 72° | 83° | — | — |
| 2021 | 94° | 65° | 79° | — | — |
| 2020 | 97° | 66° | 81° | — | — |
| 2019 | 90° | 67° | 78° | — | — |
| 2018warmest | 97° | 73° | 85° | — | — |
| 2017 | 97° | 70° | 83° | — | — |
| 2016 | 92° | 69° | 80° | — | — |
| 2015 | 88° | 68° | 78° | — | — |
| 2014 | 91° | 68° | 80° | — | — |
| 2013 | 81° | 62° | 71° | — | — |
| 2012 | 86° | 65° | 75° | — | — |
| 2011 | 92° | 66° | 79° | — | — |
| 2010 | 83° | 62° | 72° | — | — |
| 2009 | 88° | 70° | 79° | — | — |
| 2008 | 84° | 66° | 75° | — | — |
| 2007 | 86° | 71° | 79° | — | — |
| 2006 | 86° | 70° | 78° | — | — |
| 2005 | 87° | 65° | 76° | — | — |
| 2004 | 84° | 66° | 75° | — | — |
| 2003 | 88° | 67° | 77° | — | — |
| 2002 | 83° | 62° | 72° | — | — |
| 2001 | 79° | 69° | 74° | — | — |
| 2000 | 94° | 67° | 80° | — | — |
| 1999 | 82° | 59° | 71° | — | — |
| 1998 | 86° | 60° | 73° | — | — |
| 1997 | 94° | 59° | 76° | — | — |
| 1996 | 90° | 67° | 78° | — | — |
| 1995 | 88° | 66° | 77° | — | — |
| 1994 | 83° | 64° | 73° | — | — |
| 1993 | 90° | 64° | 77° | — | — |
| 1992 | 88° | 65° | 76° | — | — |
| 1991 | 80° | 64° | 72° | — | — |
| 1990 | 81° | 63° | 72° | — | — |
| 1989 | 84° | 60° | 72° | — | — |
| 1988 | 82° | 68° | 75° | — | — |
| 1987 | 94° | 63° | 78° | — | — |
| 1986 | 80° | 60° | 70° | — | — |
| 1985 | 80° | 62° | 71° | — | — |
| 1984 | 80° | 66° | 73° | — | — |
| 1983 | 82° | 65° | 73° | — | — |
| 1982 | 89° | 60° | 75° | — | — |
| 1981 | 87° | 55° | 71° | — | — |
| 1980 | 97° | 66° | 81° | — | — |
| 1979 | 89° | 56° | 72° | — | — |
| 1978 | 87° | 60° | 74° | — | — |
| 1977 | 90° | 61° | 75° | — | — |
| 1976 | 81° | 59° | 70° | — | — |
| 1975coldest | 85° | 56° | 70° | — | — |
| 1974 | 88° | 63° | 75° | — | — |
| 1973 | 89° | 58° | 73° | — | — |
| 1972 | 100° | 63° | 81° | — | — |
| 1971 | 96° | 60° | 78° | — | — |
55 years of data from ANAHEIM