Weather on April 21
El Monte, CA
55 Years of Data
Avg High
78°F
Avg Low
51°F
Warmest
2009
81°F avg
Coldest
1985
53°F avg
About This Date
April 21st in El Monte, CA typically brings pleasant spring weather, with average highs around 78°F and lows near 51°F — a 27°F daily swing. Over 55 years of records, the warmest April 21st was in 2009 (81°F average), while the coldest was 1985 (53°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 7% of April 21st dates historically, with the wettest April 21st recording 3.86" of rain. 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 April 21st in El Monte, CA? Great weather for outdoor activities.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 74° | 51° | 62° | — | — |
| 2024 | 75° | 50° | 63° | — | — |
| 2023 | 87° | 63° | 75° | — | — |
| 2022 | 68° | 49° | 58° | — | — |
| 2021 | 65° | 53° | 59° | — | — |
| 2020 | 71° | 50° | 61° | — | — |
| 2019 | 74° | 50° | 62° | — | — |
| 2018 | 87° | 56° | 71° | — | — |
| 2017 | 90° | 57° | 73° | — | — |
| 2016 | 82° | 53° | 68° | — | — |
| 2015 | 68° | 53° | 61° | — | — |
| 2014 | 81° | 59° | 70° | — | — |
| 2013 | 83° | 55° | 69° | — | — |
| 2012 | 82° | 58° | 70° | — | — |
| 2011 | 71° | 49° | 60° | — | — |
| 2010 | 61° | 46° | 53° | — | — |
| 2009warmest | 97° | 65° | 81° | — | — |
| 2008 | 69° | 46° | 58° | — | — |
| 2007 | 63° | — | — | — | — |
| 2006 | 84° | 57° | 71° | — | — |
| 2005 | 80° | 50° | 65° | — | — |
| 2004 | 74° | 51° | 62° | — | — |
| 2003 | 80° | 59° | 70° | — | — |
| 2002 | 80° | 47° | 63° | — | — |
| 2001 | 66° | 45° | 55° | 1.65" | — |
| 2000 | 80° | 52° | 66° | — | — |
| 1999 | 79° | 56° | 67° | — | — |
| 1998 | 95° | 55° | 75° | — | — |
| 1997 | 93° | 57° | 75° | — | — |
| 1996 | 74° | 46° | 60° | — | — |
| 1995 | 71° | 44° | 58° | — | — |
| 1994 | 77° | 58° | 67° | — | — |
| 1993 | 90° | 54° | 72° | — | — |
| 1992 | 86° | 54° | 70° | — | — |
| 1991 | 70° | 54° | 62° | 0.08" | — |
| 1990 | 77° | 55° | 66° | — | — |
| 1989 | 81° | 58° | 69° | — | — |
| 1988 | 66° | 43° | 54° | 3.86" | — |
| 1987 | 94° | 51° | 72° | — | — |
| 1986 | 89° | 55° | 72° | — | — |
| 1985coldest | 63° | 44° | 53° | — | — |
| 1984 | 84° | 46° | 65° | — | — |
| 1983 | 68° | 52° | 60° | 1.91" | — |
| 1982 | 89° | 52° | 70° | — | — |
| 1981 | 80° | 48° | 64° | — | — |
| 1980 | 70° | 55° | 62° | — | — |
| 1979 | 81° | 46° | 63° | — | — |
| 1978 | 72° | 47° | 59° | — | — |
| 1977 | 84° | 45° | 64° | — | — |
| 1976 | 79° | 52° | 65° | — | — |
| 1975 | 76° | 50° | 63° | — | — |
| 1974 | 82° | 45° | 63° | — | — |
| 1973 | 77° | 43° | 60° | — | — |
| 1972 | 80° | 43° | 61° | — | — |
| 1971 | 65° | 47° | 56° | — | — |
55 years of data from SAN GABRIEL FIRE DEPT