Weather on August 20
El Monte, CA
55 Years of Data
Avg High
88°F
Avg Low
63°F
Warmest
1986
85°F avg
Coldest
1975
68°F avg
About This Date
August 20th in El Monte, CA typically brings warm summer weather, with average highs around 88°F and lows near 63°F — a 25°F daily swing. Over 55 years of records, the warmest August 20th was in 1986 (85°F average), while the coldest was 1975 (68°F) — a 17°F range across recorded history. Rain or other precipitation has occurred on about 2% of August 20th dates historically. 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 20th in El Monte, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 94° | 65° | 79° | — | — |
| 2024 | 101° | 69° | 85° | — | — |
| 2023 | 76° | 62° | 69° | — | — |
| 2022 | 83° | 62° | 72° | — | — |
| 2021 | 81° | 62° | 71° | — | — |
| 2020 | 99° | 69° | 84° | — | — |
| 2019 | 90° | 61° | 75° | — | — |
| 2018 | 85° | 66° | 75° | — | — |
| 2017 | 82° | 61° | 71° | — | — |
| 2016 | 90° | 60° | 75° | — | — |
| 2015 | 86° | 63° | 74° | — | — |
| 2014 | 84° | 68° | 76° | — | — |
| 2013 | 86° | 63° | 74° | — | — |
| 2012 | 91° | 71° | 81° | — | — |
| 2011 | 86° | 57° | 72° | — | — |
| 2010 | 95° | 65° | 80° | — | — |
| 2009 | 81° | 62° | 71° | — | — |
| 2008 | 83° | 63° | 73° | — | — |
| 2007 | 98° | 65° | 81° | — | — |
| 2006 | 83° | 61° | 72° | — | — |
| 2005 | 83° | 62° | 72° | — | — |
| 2004 | 86° | 60° | 73° | — | — |
| 2003 | 93° | 67° | 80° | — | — |
| 2002 | 78° | 64° | 71° | — | — |
| 2001 | 90° | 63° | 76° | — | — |
| 2000 | 89° | 59° | 74° | — | — |
| 1999 | 89° | 62° | 76° | — | — |
| 1998 | 92° | 58° | 75° | — | — |
| 1997 | 91° | 71° | 81° | — | — |
| 1996 | 90° | 58° | 74° | — | — |
| 1995 | 88° | 64° | 76° | — | — |
| 1994 | 90° | 67° | 78° | — | — |
| 1993 | 88° | 60° | 74° | — | — |
| 1992 | 99° | 67° | 83° | — | — |
| 1991 | 90° | 58° | 74° | — | — |
| 1990 | 84° | 63° | 73° | — | — |
| 1989 | 78° | 61° | 69° | — | — |
| 1988 | 83° | 60° | 71° | — | — |
| 1987 | 88° | 57° | 72° | — | — |
| 1986warmest | 100° | 70° | 85° | — | — |
| 1985 | 86° | 57° | 72° | — | — |
| 1984 | 88° | 70° | 79° | — | — |
| 1983 | 81° | 68° | 74° | 0.03" | — |
| 1982 | 98° | 65° | 81° | — | — |
| 1981 | 96° | 59° | 78° | — | — |
| 1980 | 82° | 57° | 70° | — | — |
| 1979 | 81° | 65° | 73° | — | — |
| 1978 | 90° | 56° | 73° | — | — |
| 1977 | 95° | 66° | 81° | — | — |
| 1976 | 84° | 64° | 74° | — | — |
| 1975coldest | 80° | 56° | 68° | — | — |
| 1974 | 82° | 62° | 72° | — | — |
| 1973 | 96° | 68° | 82° | — | — |
| 1972 | 90° | 56° | 73° | — | — |
| 1971 | 88° | 65° | 76° | — | — |
55 years of data from SAN GABRIEL FIRE DEPT