Weather on October 21
El Monte, CA
55 Years of Data
Avg High
80°F
Avg Low
57°F
Warmest
2016
96°F avg
Coldest
2004
58°F avg
About This Date
October 21st in El Monte, CA typically brings warm fall weather, with average highs around 80°F and lows near 57°F. Over 55 years of records, the warmest October 21st was in 2016 (96°F average), while the coldest was 2004 (58°F) — a 38°F range across recorded history. Rain or other precipitation has occurred on about 5% of October 21st dates historically. The last decade has been 7.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 7.2°F warmer on this date compared to 20-30 years ago.
Planning for October 21st in El Monte, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 84° | 59° | 72° | — | — |
| 2024 | 87° | 64° | 76° | — | — |
| 2023 | 85° | 59° | 72° | — | — |
| 2022 | 80° | 61° | 70° | — | — |
| 2021 | 82° | 55° | 69° | — | — |
| 2020 | 76° | 60° | 68° | — | — |
| 2019 | 94° | 72° | 83° | — | — |
| 2018 | 81° | 59° | 70° | — | — |
| 2017 | 79° | 56° | 67° | — | — |
| 2016warmest | 100° | 92° | 96° | — | — |
| 2015 | 84° | 61° | 72° | — | — |
| 2014 | 79° | 64° | 71° | — | — |
| 2013 | 79° | 55° | 67° | — | — |
| 2012 | 74° | 64° | 69° | — | — |
| 2011 | 78° | 56° | 67° | — | — |
| 2010 | 63° | 56° | 59° | — | — |
| 2009 | 82° | 53° | 68° | — | — |
| 2008 | 89° | 52° | 70° | — | — |
| 2007 | 86° | 54° | 70° | — | — |
| 2006 | 91° | 54° | 72° | — | — |
| 2005 | 72° | 59° | 65° | — | — |
| 2004coldest | 68° | 49° | 58° | — | — |
| 2003 | 104° | 57° | 81° | — | — |
| 2002 | 69° | 55° | 62° | — | — |
| 2001 | 76° | 58° | 67° | — | — |
| 2000 | 71° | 59° | 65° | — | — |
| 1999 | 98° | 53° | 76° | — | — |
| 1998 | 81° | 54° | 67° | — | — |
| 1997 | 75° | 56° | 65° | — | — |
| 1996 | 78° | 52° | 65° | — | — |
| 1995 | 83° | 53° | 68° | — | — |
| 1994 | 81° | 47° | 64° | — | — |
| 1993 | 86° | 53° | 70° | — | — |
| 1992 | 70° | 64° | 67° | 0.2" | — |
| 1991 | 79° | 63° | 71° | — | — |
| 1990 | 89° | 49° | 69° | — | — |
| 1989 | 74° | 58° | 66° | 0.2" | — |
| 1988 | 78° | 60° | 69° | — | — |
| 1987 | 81° | 56° | 68° | — | — |
| 1986 | 85° | 48° | 66° | — | — |
| 1985 | 67° | 57° | 62° | 0.08" | — |
| 1984 | 75° | 50° | 63° | — | — |
| 1983 | 86° | 57° | 72° | — | — |
| 1982 | 83° | 55° | 69° | — | — |
| 1981 | 83° | 51° | 67° | — | — |
| 1980 | 89° | 52° | 70° | — | — |
| 1979 | 76° | 49° | 62° | — | — |
| 1978 | 78° | 58° | 68° | — | — |
| 1977 | 75° | 56° | 65° | — | — |
| 1976 | 80° | 62° | 71° | — | — |
| 1975 | 72° | 54° | 63° | — | — |
| 1974 | 73° | 60° | 67° | — | — |
| 1973 | 76° | 57° | 66° | — | — |
| 1972 | 75° | 48° | 62° | — | — |
| 1971 | 84° | 44° | 64° | — | — |
55 years of data from SAN GABRIEL FIRE DEPT