Weather on September 12
El Monte, CA
55 Years of Data
Avg High
87°F
Avg Low
61°F
Warmest
1971
88°F avg
Coldest
1975
65°F avg
About This Date
September 12th 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 12th was in 1971 (88°F average), while the coldest was 1975 (65°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 2% of September 12th 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 September 12th 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 | 80° | 59° | 70° | — | — |
| 2024 | 83° | 58° | 70° | — | — |
| 2023 | 86° | 61° | 73° | — | — |
| 2022 | 86° | 69° | 78° | — | — |
| 2021 | 95° | 62° | 79° | — | — |
| 2020 | 90° | 66° | 78° | — | — |
| 2019 | 93° | 64° | 79° | — | — |
| 2018 | 83° | 61° | 72° | — | — |
| 2017 | 83° | 63° | 73° | — | — |
| 2016 | 82° | 60° | 71° | — | — |
| 2015 | 96° | 71° | 84° | — | — |
| 2014 | 95° | 67° | 81° | — | — |
| 2013 | 88° | 60° | 74° | — | — |
| 2012 | 84° | 70° | 77° | — | — |
| 2011 | 95° | 58° | 76° | — | — |
| 2010 | 84° | 51° | 68° | — | — |
| 2009 | 96° | 65° | 80° | — | — |
| 2008 | 74° | 64° | 69° | — | — |
| 2007 | 88° | 60° | 74° | — | — |
| 2006 | 87° | 64° | 76° | — | — |
| 2005 | 75° | 55° | 65° | — | — |
| 2004 | 94° | 64° | 79° | — | — |
| 2003 | 90° | 60° | 75° | — | — |
| 2002 | 87° | 60° | 74° | — | — |
| 2001 | 86° | 59° | 73° | — | — |
| 2000 | 107° | 63° | 85° | — | — |
| 1999 | 85° | 55° | 70° | — | — |
| 1998 | 88° | 59° | 73° | — | — |
| 1997 | 89° | 67° | 78° | — | — |
| 1996 | 89° | 55° | 72° | — | — |
| 1995 | 97° | 57° | 77° | — | — |
| 1994 | 91° | 58° | 74° | — | — |
| 1993 | 89° | 65° | 77° | — | — |
| 1992 | 90° | 58° | 74° | — | — |
| 1991 | 80° | 58° | 69° | — | — |
| 1990 | 101° | 65° | 83° | — | — |
| 1989 | 83° | 63° | 73° | — | — |
| 1988 | 79° | 59° | 69° | — | — |
| 1987 | 74° | 63° | 68° | — | — |
| 1986 | 81° | 62° | 71° | — | — |
| 1985 | 90° | 51° | 70° | — | — |
| 1984 | 85° | 68° | 76° | 0.03" | — |
| 1983 | 96° | 68° | 82° | — | — |
| 1982 | 81° | 66° | 73° | — | — |
| 1981 | 90° | 57° | 73° | — | — |
| 1980 | 82° | 62° | 72° | — | — |
| 1979 | 96° | 66° | 81° | — | — |
| 1978 | 79° | 59° | 69° | — | — |
| 1977 | 84° | 62° | 73° | — | — |
| 1976 | 79° | 60° | 69° | — | — |
| 1975coldest | 77° | 54° | 65° | — | — |
| 1974 | 83° | 65° | 74° | — | — |
| 1973 | 82° | 55° | 69° | — | — |
| 1972 | 81° | 52° | 66° | — | — |
| 1971warmest | 109° | 67° | 88° | — | — |
55 years of data from SAN GABRIEL FIRE DEPT