Weather on May 18
El Monte, CA
55 Years of Data
Avg High
78°F
Avg Low
55°F
Warmest
2008
81°F avg
Coldest
1994
55°F avg
About This Date
May 18th in El Monte, CA typically brings pleasant spring weather, with average highs around 78°F and lows near 55°F. Over 55 years of records, the warmest May 18th was in 2008 (81°F average), while the coldest was 1994 (55°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 2% of May 18th dates historically. The last decade has been 4.7°F cooler on this date compared to 20-30 years ago.
The last decade has been 4.7°F cooler on this date compared to 20-30 years ago.
Planning for May 18th in El Monte, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 72° | 53° | 62° | — | — |
| 2024 | 74° | 54° | 64° | — | — |
| 2023 | 78° | 54° | 66° | — | — |
| 2022 | 77° | 55° | 66° | — | — |
| 2021 | 75° | 55° | 65° | — | — |
| 2020 | 71° | 54° | 62° | — | — |
| 2019 | 76° | 51° | 63° | — | — |
| 2018 | 68° | 55° | 62° | — | — |
| 2017 | 77° | 51° | 64° | — | — |
| 2016 | 74° | 55° | 64° | — | — |
| 2015 | 68° | 51° | 60° | — | — |
| 2014 | 78° | 63° | 70° | — | — |
| 2013 | 75° | 60° | 68° | — | — |
| 2012 | 74° | 60° | 67° | — | — |
| 2011 | 70° | 48° | 59° | — | — |
| 2010 | 72° | 55° | 63° | — | — |
| 2009 | 83° | 61° | 72° | — | — |
| 2008warmest | 96° | 66° | 81° | — | — |
| 2007 | 72° | — | — | — | — |
| 2006 | 75° | 62° | 69° | — | — |
| 2005 | 77° | 56° | 66° | — | — |
| 2004 | 85° | 61° | 73° | — | — |
| 2003 | 79° | 58° | 68° | — | — |
| 2002 | 77° | 52° | 64° | — | — |
| 2001 | 79° | 61° | 70° | — | — |
| 2000 | 85° | 52° | 68° | — | — |
| 1999 | 85° | 55° | 70° | — | — |
| 1998 | 82° | 49° | 65° | — | — |
| 1997 | 80° | 65° | 72° | — | — |
| 1996 | 80° | 57° | 69° | — | — |
| 1995 | 81° | 51° | 66° | — | — |
| 1994coldest | 63° | 47° | 55° | 0.3" | — |
| 1993 | 80° | 55° | 68° | — | — |
| 1992 | 86° | 57° | 72° | — | — |
| 1991 | 72° | 47° | 59° | — | — |
| 1990 | 75° | 52° | 63° | — | — |
| 1989 | 75° | 60° | 68° | — | — |
| 1988 | 79° | 50° | 64° | — | — |
| 1987 | 77° | 60° | 69° | — | — |
| 1986 | 93° | 58° | 75° | — | — |
| 1985 | 77° | 49° | 63° | — | — |
| 1984 | 85° | 52° | 68° | — | — |
| 1983 | 91° | 52° | 71° | — | — |
| 1982 | 84° | 60° | 72° | — | — |
| 1981 | 81° | 52° | 66° | — | — |
| 1980 | 80° | 57° | 69° | — | — |
| 1979 | 76° | 53° | 64° | — | — |
| 1978 | 93° | 53° | 73° | — | — |
| 1977 | 75° | 45° | 60° | — | — |
| 1976 | 85° | 51° | 68° | — | — |
| 1975 | 74° | 53° | 63° | — | — |
| 1974 | 68° | 46° | 57° | — | — |
| 1973 | 79° | 57° | 68° | — | — |
| 1972 | 70° | 49° | 59° | — | — |
| 1971 | 86° | 49° | 67° | — | — |
55 years of data from SAN GABRIEL FIRE DEPT