Weather on September 17
El Monte, CA
55 Years of Data
Avg High
86°F
Avg Low
62°F
Warmest
1984
88°F avg
Coldest
2024
66°F avg
About This Date
September 17th in El Monte, CA typically brings warm fall weather, with average highs around 86°F and lows near 62°F. Over 55 years of records, the warmest September 17th was in 1984 (88°F average), while the coldest was 2024 (66°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 2% of September 17th dates historically. The last decade has been 1.2°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.2°F cooler on this date compared to 20-30 years ago.
Planning for September 17th in El Monte, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 92° | 66° | 79° | — | — |
| 2024coldest | 77° | 56° | 66° | — | — |
| 2023 | 71° | 62° | 67° | — | — |
| 2022 | 81° | 61° | 71° | — | — |
| 2021 | 80° | 56° | 68° | — | — |
| 2020 | 100° | 76° | 88° | — | — |
| 2019 | 85° | 60° | 72° | — | — |
| 2018 | 88° | 63° | 75° | — | — |
| 2017 | 75° | 61° | 68° | — | — |
| 2016 | 93° | 54° | 73° | — | — |
| 2015 | 82° | 60° | 71° | — | — |
| 2014 | 97° | 73° | 85° | — | — |
| 2013 | 82° | 62° | 72° | — | — |
| 2012 | 85° | 67° | 76° | — | — |
| 2011 | 82° | 57° | 70° | — | — |
| 2010 | 83° | 60° | 71° | — | — |
| 2009 | 91° | 62° | 77° | — | — |
| 2008 | 86° | 65° | 75° | — | — |
| 2007 | 75° | 60° | 68° | — | — |
| 2006 | 93° | 61° | 77° | — | — |
| 2005 | 78° | 55° | 67° | — | — |
| 2004 | 84° | 62° | 73° | — | — |
| 2003 | 88° | 61° | 74° | — | — |
| 2002 | 84° | 59° | 72° | — | — |
| 2001 | 83° | 62° | 72° | — | — |
| 2000 | 103° | 64° | 83° | — | — |
| 1999 | 82° | 57° | 70° | — | — |
| 1998 | 87° | 60° | 74° | — | — |
| 1997 | 96° | 69° | 83° | — | — |
| 1996 | 85° | 57° | 71° | — | — |
| 1995 | 94° | 65° | 79° | — | — |
| 1994 | 90° | 63° | 76° | — | — |
| 1993 | 77° | 64° | 71° | — | — |
| 1992 | 95° | 63° | 79° | — | — |
| 1991 | 92° | 57° | 74° | — | — |
| 1990 | 85° | 65° | 75° | — | — |
| 1989 | 86° | 64° | 75° | 0.48" | — |
| 1988 | 79° | 60° | 69° | — | — |
| 1987 | 87° | 64° | 76° | — | — |
| 1986 | 86° | 55° | 71° | — | — |
| 1985 | 80° | 62° | 71° | — | — |
| 1984warmest | 102° | 74° | 88° | — | — |
| 1983 | 94° | 67° | 80° | — | — |
| 1982 | 78° | 56° | 67° | — | — |
| 1981 | 98° | 62° | 80° | — | — |
| 1980 | 97° | 63° | 80° | — | — |
| 1979 | 97° | 64° | 80° | — | — |
| 1978 | 76° | 60° | 68° | — | — |
| 1977 | 79° | 55° | 67° | — | — |
| 1976 | 79° | 58° | 68° | — | — |
| 1975 | 95° | 68° | 82° | — | — |
| 1974 | 85° | 55° | 70° | — | — |
| 1973 | 81° | 54° | 67° | — | — |
| 1972 | 81° | 53° | 67° | — | — |
| 1971 | 77° | 68° | 73° | — | — |
55 years of data from SAN GABRIEL FIRE DEPT