Weather on September 25
El Monte, CA
55 Years of Data
Avg High
87°F
Avg Low
61°F
Warmest
2009
88°F avg
Coldest
1986
62°F avg
About This Date
September 25th in El Monte, CA typically brings warm fall weather, with average highs around 87°F and lows near 61°F — a 26°F daily swing. Over 55 years of records, the warmest September 25th was in 2009 (88°F average), while the coldest was 1986 (62°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 5% of September 25th dates historically, with the wettest September 25th recording 3.86" of rain. The last decade has been 1.4°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.4°F cooler on this date compared to 20-30 years ago.
Planning for September 25th in El Monte, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 82° | 63° | 72° | — | — |
| 2024 | 77° | 58° | 67° | — | — |
| 2023 | 81° | 57° | 69° | — | — |
| 2022 | 92° | 68° | 80° | — | — |
| 2021 | 82° | 58° | 70° | — | — |
| 2020 | 85° | 60° | 72° | — | — |
| 2019 | 85° | 64° | 74° | — | — |
| 2018 | 76° | 59° | 67° | — | — |
| 2017 | 88° | 67° | 77° | — | — |
| 2016 | 87° | 66° | 77° | — | — |
| 2015 | 97° | 67° | 82° | — | — |
| 2014 | 90° | 68° | 79° | — | — |
| 2013 | 76° | 59° | 67° | — | — |
| 2012 | 82° | 61° | 71° | — | — |
| 2011 | 82° | 55° | 69° | — | — |
| 2010 | 104° | 63° | 83° | — | — |
| 2009warmest | 100° | 75° | 88° | — | — |
| 2008 | 95° | 63° | 79° | — | — |
| 2007 | 84° | 57° | 71° | — | — |
| 2006 | 86° | 57° | 72° | — | — |
| 2005 | 83° | 54° | 68° | — | — |
| 2004 | 92° | 52° | 72° | — | — |
| 2003 | 91° | 63° | 77° | — | — |
| 2002 | 93° | 62° | 78° | — | — |
| 2001 | 111° | 62° | 87° | — | — |
| 2000 | 95° | 56° | 75° | — | — |
| 1999 | 85° | 62° | 73° | — | — |
| 1998 | 75° | 55° | 65° | — | — |
| 1997 | 80° | 67° | 73° | 1.98" | — |
| 1996 | 79° | 63° | 71° | — | — |
| 1995 | 87° | 59° | 73° | — | — |
| 1994 | 95° | 58° | 76° | — | — |
| 1993 | 95° | 53° | 74° | — | — |
| 1992 | 94° | 59° | 76° | — | — |
| 1991 | 101° | 67° | 84° | — | — |
| 1990 | 86° | 59° | 73° | — | — |
| 1989 | 94° | 64° | 79° | — | — |
| 1988 | 77° | 53° | 65° | — | — |
| 1987 | 84° | 65° | 74° | — | — |
| 1986coldest | 71° | 54° | 62° | 3.86" | — |
| 1985 | 90° | 61° | 75° | — | — |
| 1984 | 95° | 58° | 76° | — | — |
| 1983 | 86° | 59° | 73° | — | — |
| 1982 | 79° | 70° | 74° | — | — |
| 1981 | 88° | 57° | 72° | — | — |
| 1980 | 88° | 54° | 71° | — | — |
| 1979 | 90° | 61° | 75° | — | — |
| 1978 | 108° | 65° | 86° | — | — |
| 1977 | 83° | 55° | 69° | — | — |
| 1976 | 73° | 64° | 69° | 0.1" | — |
| 1975 | 99° | 61° | 80° | — | — |
| 1974 | 80° | 63° | 71° | — | — |
| 1973 | 83° | 61° | 72° | — | — |
| 1972 | 77° | 60° | 69° | — | — |
| 1971 | 86° | 55° | 71° | — | — |
55 years of data from SAN GABRIEL FIRE DEPT