Weather on August 15
Norwalk, CA
55 Years of Data
Avg High
85°F
Avg Low
64°F
Warmest
2015
87°F avg
Coldest
2011
31°F avg
About This Date
August 15th in Norwalk, CA typically brings warm summer weather, with average highs around 85°F and lows near 64°F. Over 55 years of records, the warmest August 15th was in 2015 (87°F average), while the coldest was 2011 (31°F) — a 56°F range across recorded history. Rain or other precipitation has occurred on about 5% of August 15th dates historically. The last decade has been 3.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.5°F warmer on this date compared to 20-30 years ago.
Planning for August 15th in Norwalk, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 78° | 67° | 72° | — | — |
| 2024 | 91° | 67° | 79° | — | — |
| 2023 | 92° | 68° | 80° | — | — |
| 2022 | 89° | 68° | 79° | — | — |
| 2021 | 91° | 68° | 80° | — | — |
| 2020 | 96° | 74° | 85° | — | — |
| 2019 | 89° | 62° | 76° | — | — |
| 2018 | 86° | 70° | 78° | — | — |
| 2017 | 78° | 67° | 72° | — | — |
| 2016 | 99° | 69° | 84° | — | — |
| 2015warmest | 102° | 71° | 87° | — | — |
| 2014 | 96° | 65° | 80° | — | — |
| 2013 | 86° | 67° | 76° | — | — |
| 2012 | 86° | 70° | 78° | — | — |
| 2011coldest | 93° | -32° | 31° | — | — |
| 2010 | 84° | 59° | 72° | — | — |
| 2009 | 81° | 67° | 74° | — | — |
| 2008 | 84° | 68° | 76° | — | — |
| 2007 | 96° | 70° | 83° | — | — |
| 2006 | 80° | 63° | 71° | — | — |
| 2005 | 76° | 65° | 70° | — | — |
| 2004 | 79° | 66° | 72° | — | — |
| 2003 | 95° | 71° | 83° | — | — |
| 2002 | 78° | 65° | 71° | — | — |
| 2001 | 91° | 65° | 78° | — | — |
| 2000 | 88° | 69° | 78° | — | — |
| 1999 | 80° | 64° | 72° | — | — |
| 1998 | 81° | 69° | 75° | — | — |
| 1997 | 78° | 68° | 73° | — | — |
| 1996 | 88° | 69° | 78° | — | — |
| 1995 | 80° | 62° | 71° | — | — |
| 1994 | 88° | 72° | 80° | — | — |
| 1993 | 77° | 63° | 70° | — | — |
| 1992 | 97° | 73° | 85° | — | — |
| 1991 | 83° | 67° | 75° | — | — |
| 1990 | 78° | 68° | 73° | — | — |
| 1989 | 79° | 62° | 70° | — | — |
| 1988 | 83° | 60° | 71° | — | — |
| 1987 | 77° | 64° | 71° | — | — |
| 1986 | 81° | 62° | 71° | — | — |
| 1985 | 80° | 60° | 70° | — | — |
| 1984 | 85° | 68° | 76° | 0.2" | — |
| 1983 | 93° | 74° | 83° | 0.3" | — |
| 1982 | 79° | 60° | 69° | — | — |
| 1981 | 89° | 67° | 78° | — | — |
| 1980 | 80° | 66° | 73° | — | — |
| 1979 | 77° | 63° | 70° | — | — |
| 1978 | 85° | 61° | 73° | — | — |
| 1977 | 94° | 65° | 79° | — | — |
| 1976 | 73° | 66° | 70° | 0.03" | — |
| 1975 | 79° | 62° | 70° | — | — |
| 1974 | 82° | 64° | 73° | — | — |
| 1973 | 81° | 66° | 73° | — | — |
| 1972 | 78° | 59° | 69° | — | — |
| 1971 | 87° | 69° | 78° | — | — |
55 years of data from FULLERTON MUNI AP