Weather on September 23
El Monte, CA
55 Years of Data
Avg High
88°F
Avg Low
60°F
Warmest
2009
89°F avg
Coldest
2007
62°F avg
About This Date
September 23rd in El Monte, CA typically brings warm fall weather, with average highs around 88°F and lows near 60°F — a 28°F daily swing. Over 55 years of records, the warmest September 23rd was in 2009 (89°F average), while the coldest was 2007 (62°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 2% of September 23rd dates historically. The last decade has been 2.0°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.0°F cooler on this date compared to 20-30 years ago.
Planning for September 23rd in El Monte, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 91° | 65° | 78° | — | — |
| 2024 | 87° | 57° | 72° | — | — |
| 2023 | 80° | 59° | 70° | — | — |
| 2022 | 94° | 67° | 80° | — | — |
| 2021 | 86° | 59° | 73° | — | — |
| 2020 | 91° | 62° | 77° | — | — |
| 2019 | 84° | 61° | 72° | — | — |
| 2018 | 82° | 60° | 71° | — | — |
| 2017 | 76° | 55° | 65° | — | — |
| 2016 | 78° | 57° | 68° | — | — |
| 2015 | 91° | 64° | 78° | — | — |
| 2014 | 89° | 62° | 76° | — | — |
| 2013 | 93° | 57° | 75° | — | — |
| 2012 | 97° | 68° | 82° | — | — |
| 2011 | 90° | 60° | 75° | — | — |
| 2010 | 86° | 55° | 71° | — | — |
| 2009warmest | 103° | 76° | 89° | — | — |
| 2008 | 87° | 59° | 73° | — | — |
| 2007coldest | 71° | 53° | 62° | — | — |
| 2006 | 80° | 58° | 69° | — | — |
| 2005 | 79° | 62° | 70° | — | — |
| 2004 | 94° | 53° | 73° | — | — |
| 2003 | 95° | 62° | 79° | — | — |
| 2002 | 102° | 59° | 81° | — | — |
| 2001 | 90° | 59° | 74° | — | — |
| 2000 | 75° | 60° | 68° | — | — |
| 1999 | 89° | 69° | 79° | — | — |
| 1998 | 78° | 59° | 69° | — | — |
| 1997 | 100° | 63° | 81° | — | — |
| 1996 | 83° | 61° | 72° | — | — |
| 1995 | 86° | 59° | 73° | — | — |
| 1994 | 87° | 62° | 75° | — | — |
| 1993 | 85° | 58° | 71° | — | — |
| 1992 | 103° | 67° | 85° | — | — |
| 1991 | 98° | 69° | 84° | — | — |
| 1990 | 82° | 59° | 71° | — | — |
| 1989 | 96° | 60° | 78° | — | — |
| 1988 | 83° | 53° | 68° | — | — |
| 1987 | 91° | 67° | 79° | 0.13" | — |
| 1986 | 77° | 49° | 63° | — | — |
| 1985 | 93° | 59° | 76° | — | — |
| 1984 | 81° | 67° | 74° | — | — |
| 1983 | 86° | 59° | 73° | — | — |
| 1982 | 101° | 61° | 81° | — | — |
| 1981 | 81° | 65° | 73° | — | — |
| 1980 | 80° | 56° | 68° | — | — |
| 1979 | 95° | 64° | 80° | — | — |
| 1978 | 105° | 60° | 83° | — | — |
| 1977 | 80° | 55° | 68° | — | — |
| 1976 | 81° | 62° | 71° | — | — |
| 1975 | 103° | 60° | 81° | — | — |
| 1974 | 95° | 61° | 78° | — | — |
| 1973 | 76° | 56° | 66° | — | — |
| 1972 | 93° | 59° | 76° | — | — |
| 1971 | 90° | 52° | 71° | — | — |
55 years of data from SAN GABRIEL FIRE DEPT