Weather on December 18
El Monte, CA
55 Years of Data
Avg High
70°F
Avg Low
45°F
Warmest
2024
76°F avg
Coldest
2016
47°F avg
About This Date
December 18th in El Monte, CA typically brings pleasant winter weather, with average highs around 70°F and lows near 45°F — a 25°F daily swing. Over 55 years of records, the warmest December 18th was in 2024 (76°F average), while the coldest was 2016 (47°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 15% of December 18th dates historically, with the wettest December 18th recording 2.24" of rain. The last decade has been 2.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.4°F warmer on this date compared to 20-30 years ago.
Planning for December 18th in El Monte, CA? Great weather for outdoor activities.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 80° | 56° | 68° | — | — |
| 2024warmest | 85° | 68° | 76° | — | — |
| 2023 | 68° | 58° | 63° | — | — |
| 2022 | 67° | 49° | 58° | — | — |
| 2021 | 69° | 54° | 61° | — | — |
| 2020 | 70° | 49° | 59° | — | — |
| 2019 | 63° | 49° | 56° | — | — |
| 2018 | 66° | 53° | 60° | — | — |
| 2017 | 71° | 55° | 63° | — | — |
| 2016coldest | 58° | 37° | 47° | — | — |
| 2015 | 74° | 51° | 62° | — | — |
| 2014 | 65° | 46° | 55° | — | — |
| 2013 | 71° | 55° | 63° | — | — |
| 2012 | 62° | 47° | 54° | 0.84" | — |
| 2011 | 66° | 48° | 57° | — | — |
| 2010 | 58° | 52° | 55° | — | — |
| 2009 | 81° | 47° | 64° | — | — |
| 2008 | 57° | 39° | 48° | — | — |
| 2007 | 55° | 52° | 53° | 2.24" | — |
| 2006 | 61° | 37° | 49° | — | — |
| 2005 | 64° | 50° | 57° | — | — |
| 2004 | 84° | 45° | 64° | — | — |
| 2003 | 83° | 41° | 62° | — | — |
| 2002 | 65° | 38° | 51° | — | — |
| 2001 | 76° | 36° | 56° | — | — |
| 2000 | 78° | 43° | 60° | — | — |
| 1999 | 81° | 50° | 65° | — | — |
| 1998 | 62° | 45° | 53° | — | — |
| 1997 | 70° | 48° | 59° | 1.78" | — |
| 1996 | 78° | 43° | 60° | — | — |
| 1995 | 68° | 36° | 52° | — | — |
| 1994 | 77° | 44° | 61° | — | — |
| 1993 | 67° | 36° | 51° | — | — |
| 1992 | 62° | 40° | 51° | 0.79" | — |
| 1991 | 67° | 51° | 59° | — | — |
| 1990 | 65° | 35° | 50° | — | — |
| 1989 | 65° | 42° | 53° | — | — |
| 1988 | 58° | 44° | 51° | 0.33" | — |
| 1987 | 68° | 37° | 53° | — | — |
| 1986 | 69° | 44° | 57° | — | — |
| 1985 | 85° | 42° | 63° | — | — |
| 1984 | 57° | 39° | 48° | 1.7" | — |
| 1983 | 70° | 45° | 57° | — | — |
| 1982 | 75° | 37° | 56° | — | — |
| 1981 | 74° | 52° | 63° | — | — |
| 1980 | 74° | 53° | 63° | — | — |
| 1979 | 80° | 43° | 61° | — | — |
| 1978 | 56° | 47° | 51° | 2.16" | — |
| 1977 | 65° | 48° | 56° | 2.03" | — |
| 1976 | 71° | 38° | 54° | — | — |
| 1975 | 75° | 35° | 55° | — | — |
| 1974 | 77° | 40° | 58° | — | — |
| 1973 | 73° | 43° | 58° | — | — |
| 1972 | 80° | 49° | 64° | — | — |
| 1971 | 64° | 41° | 53° | — | — |
55 years of data from SAN GABRIEL FIRE DEPT