Weather on June 30
Fullerton, CA
55 Years of Data
Avg High
85°F
Avg Low
62°F
Warmest
1985
83°F avg
Coldest
1974
65°F avg
About This Date
June 30th in Fullerton, CA typically brings warm summer weather, with average highs around 85°F and lows near 62°F. Over 55 years of records, the warmest June 30th was in 1985 (83°F average), while the coldest was 1974 (65°F) — a 18°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 2.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.6°F warmer on this date compared to 20-30 years ago.
Planning for June 30th 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 | 85° | 62° | 73° | — | — |
| 2024 | 89° | 61° | 75° | — | — |
| 2023 | 84° | 63° | 73° | — | — |
| 2022 | 92° | 66° | 79° | — | — |
| 2021 | 87° | 70° | 78° | — | — |
| 2020 | 82° | 63° | 72° | — | — |
| 2019 | 89° | 65° | 77° | — | — |
| 2018 | 82° | 64° | 73° | — | — |
| 2017 | 81° | 64° | 72° | — | — |
| 2016 | 88° | 69° | 78° | — | — |
| 2015 | 93° | 68° | 81° | — | — |
| 2014 | 81° | 66° | 73° | — | — |
| 2013 | 92° | 70° | 81° | — | — |
| 2012 | 87° | 60° | 74° | — | — |
| 2011 | 86° | 59° | 73° | — | — |
| 2010 | 83° | 63° | 73° | — | — |
| 2009 | 85° | 61° | 73° | — | — |
| 2008 | 90° | 64° | 77° | — | — |
| 2007 | 88° | 64° | 76° | — | — |
| 2006 | 95° | 66° | 81° | — | — |
| 2005 | 81° | 59° | 70° | — | — |
| 2004 | 78° | 64° | 71° | — | — |
| 2003 | 87° | 63° | 75° | — | — |
| 2002 | 79° | 61° | 70° | — | — |
| 2001 | 84° | 63° | 73° | — | — |
| 2000 | 84° | 65° | 74° | — | — |
| 1999 | 83° | 60° | 71° | — | — |
| 1998 | 81° | 61° | 71° | — | — |
| 1997 | 78° | 61° | 69° | — | — |
| 1996 | 98° | 63° | 80° | — | — |
| 1995 | 80° | 61° | 70° | — | — |
| 1994 | 84° | 67° | 75° | — | — |
| 1993 | 84° | 61° | 72° | — | — |
| 1992 | 79° | 62° | 70° | — | — |
| 1991 | 85° | 58° | 71° | — | — |
| 1990 | 87° | 63° | 75° | — | — |
| 1989 | 78° | 58° | 68° | — | — |
| 1988 | 78° | 64° | 71° | — | — |
| 1987 | 75° | 59° | 67° | — | — |
| 1986 | 89° | 65° | 77° | — | — |
| 1985warmest | 103° | 63° | 83° | — | — |
| 1984 | 82° | 64° | 73° | — | — |
| 1983 | 75° | 64° | 70° | — | — |
| 1982 | 76° | 56° | 66° | — | — |
| 1981 | 87° | 61° | 74° | — | — |
| 1980 | 86° | 65° | 75° | — | — |
| 1979 | 89° | 55° | 72° | — | — |
| 1978 | 83° | 53° | 68° | — | — |
| 1977 | 86° | 58° | 72° | — | — |
| 1976 | 88° | 56° | 72° | — | — |
| 1975 | 86° | 51° | 69° | — | — |
| 1974coldest | 79° | 52° | 65° | — | — |
| 1973 | 86° | 61° | 73° | — | — |
| 1972 | 82° | 58° | 70° | — | — |
| 1971 | 81° | 51° | 66° | — | — |
55 years of data from ANAHEIM