Weather on May 20
Downey, CA
55 Years of Data
Avg High
78°F
Avg Low
56°F
Warmest
2017
80°F avg
Coldest
2002
56°F avg
About This Date
May 20th in Downey, CA typically brings pleasant spring weather, with average highs around 78°F and lows near 56°F. Over 55 years of records, the warmest May 20th was in 2017 (80°F average), while the coldest was 2002 (56°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 2% of May 20th dates historically. The last decade has been 3.1°F cooler on this date compared to 20-30 years ago.
The last decade has been 3.1°F cooler on this date compared to 20-30 years ago.
Planning for May 20th in Downey, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 90° | 60° | 75° | — | — |
| 2024 | 68° | 54° | 61° | — | — |
| 2023 | 82° | 57° | 70° | — | — |
| 2022 | 66° | 54° | 60° | — | — |
| 2021 | 74° | 53° | 63° | — | — |
| 2020 | 76° | 52° | 64° | — | — |
| 2019 | 70° | 49° | 59° | — | — |
| 2018 | 67° | 56° | 61° | — | — |
| 2017warmest | 95° | 65° | 80° | — | — |
| 2016 | 72° | 51° | 61° | — | — |
| 2015 | 75° | 52° | 63° | — | — |
| 2014 | 70° | 52° | 61° | — | — |
| 2013 | 86° | 56° | 71° | — | — |
| 2012 | 88° | 55° | 71° | — | — |
| 2011 | 81° | 50° | 65° | — | — |
| 2010 | 81° | 56° | 68° | — | — |
| 2009 | 89° | 53° | 71° | — | — |
| 2008 | 76° | 57° | 66° | — | — |
| 2007 | 73° | 55° | 64° | — | — |
| 2006 | 82° | 65° | 73° | — | — |
| 2005 | 90° | 57° | 73° | — | — |
| 2004 | 78° | 57° | 68° | — | — |
| 2003 | 91° | 56° | 73° | — | — |
| 2002coldest | 63° | 50° | 56° | — | — |
| 2001 | 78° | 60° | 69° | — | — |
| 2000 | 92° | 60° | 76° | — | — |
| 1999 | 76° | 59° | 67° | — | — |
| 1998 | 75° | 55° | 65° | — | — |
| 1997 | 80° | 64° | 72° | — | — |
| 1996 | 75° | 57° | 66° | — | — |
| 1995 | 76° | 56° | 66° | — | — |
| 1994 | 76° | 52° | 64° | — | — |
| 1993 | 82° | 60° | 71° | — | — |
| 1992 | 77° | 60° | 69° | — | — |
| 1991 | — | 50° | — | — | — |
| 1990 | 76° | 52° | 64° | — | — |
| 1989 | 86° | 54° | 70° | — | — |
| 1988 | 87° | 62° | 75° | — | — |
| 1987 | 66° | 58° | 62° | — | — |
| 1986 | 80° | 62° | 71° | — | — |
| 1985 | 76° | 58° | 67° | — | — |
| 1984 | 84° | 58° | 71° | — | — |
| 1983 | 86° | 58° | 72° | — | — |
| 1982 | 78° | 60° | 69° | — | — |
| 1981 | 74° | 50° | 62° | — | — |
| 1980 | 75° | 59° | 67° | — | — |
| 1979 | 75° | 52° | 63° | — | — |
| 1978 | 75° | 59° | 67° | — | — |
| 1977 | 81° | 55° | 68° | — | — |
| 1976 | 72° | 61° | 66° | — | — |
| 1975 | 66° | 53° | 60° | — | — |
| 1974 | 77° | 49° | 63° | — | — |
| 1973 | 67° | 59° | 63° | — | — |
| 1972 | 68° | 50° | 59° | 0.05" | — |
| 1971 | 71° | 54° | 62° | — | — |
55 years of data from MONTEBELLO