Weather on August 31
Downey, CA
55 Years of Data
Avg High
89°F
Avg Low
65°F
Warmest
2017
88°F avg
Coldest
1973
68°F avg
About This Date
August 31st in Downey, CA typically brings warm summer weather, with average highs around 89°F and lows near 65°F. Over 55 years of records, the warmest August 31st was in 2017 (88°F average), while the coldest was 1973 (68°F) — a 20°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 1.3°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.3°F cooler on this date compared to 20-30 years ago.
Planning for August 31st in Downey, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 95° | 67° | 81° | — | — |
| 2024 | 88° | 59° | 73° | — | — |
| 2023 | 86° | 63° | 74° | — | — |
| 2022 | 99° | 76° | 87° | — | — |
| 2021 | 76° | 60° | 68° | — | — |
| 2020 | 85° | 59° | 72° | — | — |
| 2019 | 94° | 64° | 79° | — | — |
| 2018 | 85° | 61° | 73° | — | — |
| 2017warmest | 104° | 72° | 88° | — | — |
| 2016 | 88° | 67° | 77° | — | — |
| 2015 | 87° | 63° | 75° | — | — |
| 2014 | 91° | 64° | 78° | — | — |
| 2013 | 94° | 74° | 84° | — | — |
| 2012 | 89° | 69° | 79° | — | — |
| 2011 | 90° | 56° | 73° | — | — |
| 2010 | 86° | 57° | 72° | — | — |
| 2009 | 106° | 63° | 84° | — | — |
| 2008 | 88° | 62° | 75° | — | — |
| 2007 | 104° | 56° | 80° | — | — |
| 2006 | 95° | 62° | 79° | — | — |
| 2005 | 94° | 66° | 80° | — | — |
| 2004 | 97° | 64° | 80° | — | — |
| 2003 | 91° | 63° | 77° | — | — |
| 2002 | 90° | 62° | 76° | — | — |
| 2001 | 86° | 63° | 74° | — | — |
| 2000 | 80° | 65° | 72° | — | — |
| 1999 | 90° | 62° | 76° | — | — |
| 1998 | 100° | 73° | 87° | — | — |
| 1997 | 93° | 65° | 79° | — | — |
| 1996 | 98° | 69° | 84° | — | — |
| 1995 | 100° | 67° | 83° | — | — |
| 1994 | 84° | 67° | 75° | — | — |
| 1993 | 83° | 64° | 73° | — | — |
| 1992 | 83° | 78° | 80° | — | — |
| 1991 | 83° | 60° | 71° | — | — |
| 1990 | 88° | 68° | 78° | — | — |
| 1989 | 86° | 62° | 74° | — | — |
| 1988 | 88° | 64° | 76° | — | — |
| 1987 | 84° | 63° | 73° | — | — |
| 1986 | 88° | 64° | 76° | — | — |
| 1985 | 98° | 70° | 84° | — | — |
| 1984 | 92° | 72° | 82° | — | — |
| 1983 | 95° | 68° | 82° | — | — |
| 1982 | 92° | 64° | 78° | — | — |
| 1981 | 90° | 62° | 76° | — | — |
| 1980 | 86° | 60° | 73° | — | — |
| 1979 | 85° | 61° | 73° | — | — |
| 1978 | 84° | 64° | 74° | — | — |
| 1977 | 78° | 65° | 71° | — | — |
| 1976 | 83° | 71° | 77° | — | — |
| 1975 | 77° | 62° | 70° | — | — |
| 1974 | 84° | 60° | 72° | — | — |
| 1973coldest | 75° | 61° | 68° | — | — |
| 1972 | 86° | 67° | 76° | — | — |
| 1971 | 84° | 62° | 73° | — | — |
55 years of data from MONTEBELLO