Weather on August 31
El Monte, CA
55 Years of Data
Avg High
91°F
Avg Low
63°F
Warmest
1998
88°F avg
Coldest
2021
68°F avg
About This Date
August 31st in El Monte, CA typically brings hot summer weather, with average highs around 91°F and lows near 63°F — a 28°F daily swing. Over 55 years of records, the warmest August 31st was in 1998 (88°F average), while the coldest was 2021 (68°F) — a 20°F range across recorded history. This date has historically been dry, with little recorded precipitation. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for August 31st in El Monte, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.5°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° | — | — |
| 2021coldest | 76° | 60° | 68° | — | — |
| 2020 | 85° | 59° | 72° | — | — |
| 2019 | 94° | 64° | 79° | — | — |
| 2018 | 85° | 61° | 73° | — | — |
| 2017 | 104° | 72° | 88° | — | — |
| 2016 | 99° | 65° | 82° | — | — |
| 2015 | 87° | 63° | 75° | — | — |
| 2014 | 90° | 69° | 79° | — | — |
| 2013 | 91° | 77° | 84° | — | — |
| 2012 | 90° | 69° | 79° | — | — |
| 2011 | 90° | 56° | 73° | — | — |
| 2010 | 86° | 57° | 72° | — | — |
| 2009 | 95° | 69° | 82° | — | — |
| 2008 | 85° | 68° | 76° | — | — |
| 2007 | 104° | 56° | 80° | — | — |
| 2006 | 90° | 64° | 77° | — | — |
| 2005 | 84° | 66° | 75° | — | — |
| 2004 | 93° | 59° | 76° | — | — |
| 2003 | 90° | 65° | 77° | — | — |
| 2002 | 93° | 61° | 77° | — | — |
| 2001 | 89° | 60° | 75° | — | — |
| 2000 | 80° | 65° | 72° | — | — |
| 1999 | 87° | 60° | 74° | — | — |
| 1998warmest | 102° | 73° | 88° | — | — |
| 1997 | 93° | 65° | 79° | — | — |
| 1996 | 98° | 65° | 81° | — | — |
| 1995 | 101° | 64° | 82° | — | — |
| 1994 | 85° | 65° | 75° | — | — |
| 1993 | 88° | 62° | 75° | — | — |
| 1992 | 81° | 58° | 69° | — | — |
| 1991 | 89° | 57° | 73° | — | — |
| 1990 | 88° | 60° | 74° | — | — |
| 1989 | 87° | 58° | 72° | — | — |
| 1988 | 93° | 65° | 79° | — | — |
| 1987 | 90° | 60° | 75° | — | — |
| 1986 | 89° | 63° | 76° | — | — |
| 1985 | 104° | 67° | 85° | — | — |
| 1984 | 95° | 68° | 82° | — | — |
| 1983 | 98° | 66° | 82° | — | — |
| 1982 | 95° | 61° | 78° | — | — |
| 1981 | 90° | 65° | 77° | — | — |
| 1980 | 84° | 59° | 72° | — | — |
| 1979 | 85° | 61° | 73° | — | — |
| 1978 | 91° | 63° | 77° | — | — |
| 1977 | 84° | 69° | 77° | — | — |
| 1976 | 101° | 64° | 82° | — | — |
| 1975 | 86° | 54° | 70° | — | — |
| 1974 | 90° | 55° | 72° | — | — |
| 1973 | 81° | 57° | 69° | — | — |
| 1972 | 94° | 64° | 79° | — | — |
| 1971 | 84° | 56° | 70° | — | — |
55 years of data from SAN GABRIEL FIRE DEPT