Weather on September 30
El Monte, CA
55 Years of Data
Avg High
87°F
Avg Low
60°F
Warmest
2020
95°F avg
Coldest
2002
62°F avg
About This Date
September 30th in El Monte, CA typically brings warm fall weather, with average highs around 87°F and lows near 60°F — a 27°F daily swing. Over 55 years of records, the warmest September 30th was in 2020 (95°F average), while the coldest was 2002 (62°F) — a 33°F range across recorded history. Rain or other precipitation has occurred on about 5% of September 30th dates historically, with the wettest September 30th recording 3.4" of rain. The last decade has been 1.5°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.5°F cooler on this date compared to 20-30 years ago.
Planning for September 30th in El Monte, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 78° | 60° | 69° | — | — |
| 2024 | 91° | 59° | 75° | — | — |
| 2023 | 70° | 58° | 64° | — | — |
| 2022 | 80° | 62° | 71° | — | — |
| 2021 | 92° | 62° | 77° | — | — |
| 2020warmest | 108° | 82° | 95° | — | — |
| 2019 | 75° | 55° | 65° | — | — |
| 2018 | 85° | 60° | 72° | — | — |
| 2017 | 82° | 61° | 71° | — | — |
| 2016 | 71° | 66° | 69° | — | — |
| 2015 | 92° | 65° | 78° | — | — |
| 2014 | 66° | 60° | 63° | — | — |
| 2013 | 84° | 55° | 70° | — | — |
| 2012 | 99° | 63° | 81° | — | — |
| 2011 | 86° | 58° | 72° | — | — |
| 2010 | 102° | 69° | 86° | — | — |
| 2009 | 83° | 54° | 68° | — | — |
| 2008 | 102° | 65° | 83° | — | — |
| 2007 | 88° | 55° | 71° | — | — |
| 2006 | 80° | 58° | 69° | — | — |
| 2005 | 95° | 63° | 79° | — | — |
| 2004 | 80° | 63° | 71° | — | — |
| 2003 | 88° | 67° | 77° | — | — |
| 2002coldest | 71° | 54° | 62° | — | — |
| 2001 | 100° | 60° | 80° | — | — |
| 2000 | 82° | 58° | 70° | — | — |
| 1999 | 105° | 60° | 83° | — | — |
| 1998 | 78° | 56° | 67° | — | — |
| 1997 | 90° | 69° | 79° | — | — |
| 1996 | 90° | 61° | 75° | — | — |
| 1995 | 95° | 53° | 74° | — | — |
| 1994 | 89° | 71° | 80° | — | — |
| 1993 | 95° | 60° | 78° | — | — |
| 1992 | 103° | 63° | 83° | — | — |
| 1991 | 92° | 62° | 77° | — | — |
| 1990 | 90° | 58° | 74° | 0.03" | — |
| 1989 | 85° | 57° | 71° | — | — |
| 1988 | 97° | 55° | 76° | — | — |
| 1987 | 101° | 62° | 81° | — | — |
| 1986 | 84° | 54° | 69° | — | — |
| 1985 | 82° | 65° | 73° | — | — |
| 1984 | 84° | 61° | 72° | — | — |
| 1983 | 69° | 59° | 64° | 3.4" | — |
| 1982 | 77° | 49° | 63° | — | — |
| 1981 | 78° | 61° | 69° | 0.25" | — |
| 1980 | 105° | 58° | 81° | — | — |
| 1979 | 80° | 58° | 69° | — | — |
| 1978 | 94° | 63° | 78° | — | — |
| 1977 | 82° | 62° | 72° | — | — |
| 1976 | 81° | 61° | 71° | — | — |
| 1975 | 81° | 61° | 71° | — | — |
| 1974 | 89° | 56° | 72° | — | — |
| 1973 | 87° | 57° | 72° | — | — |
| 1972 | 94° | 59° | 76° | — | — |
| 1971 | 75° | 52° | 63° | — | — |
55 years of data from SAN GABRIEL FIRE DEPT