Weather on May 31
West Covina, CA
55 Years of Data
Avg High
82°F
Avg Low
56°F
Warmest
2025
78°F avg
Coldest
1971
60°F avg
About This Date
May 31st in West Covina, CA typically brings warm spring weather, with average highs around 82°F and lows near 56°F — a 26°F daily swing. Over 55 years of records, the warmest May 31st was in 2025 (78°F average), while the coldest was 1971 (60°F) — a 18°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 2.1°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.1°F cooler on this date compared to 20-30 years ago.
Planning for May 31st in West Covina, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025warmest | 95° | 61° | 78° | — | — |
| 2024 | 79° | 60° | 69° | — | — |
| 2023 | 63° | 57° | 60° | — | — |
| 2022 | 83° | 54° | 68° | — | — |
| 2021 | 83° | 60° | 71° | — | — |
| 2020 | 86° | 59° | 73° | — | — |
| 2019 | 78° | 56° | 67° | — | — |
| 2018 | 76° | 57° | 66° | — | — |
| 2017 | 73° | 61° | 67° | — | — |
| 2016 | 79° | 55° | 67° | — | — |
| 2015 | 85° | 56° | 70° | — | — |
| 2014 | 91° | 56° | 73° | — | — |
| 2013 | 91° | 61° | 76° | — | — |
| 2012 | 95° | 54° | 74° | — | — |
| 2011 | 86° | 48° | 67° | — | — |
| 2010 | 86° | 55° | 71° | — | — |
| 2009 | 79° | 60° | 69° | — | — |
| 2008 | 80° | 50° | 65° | — | — |
| 2007 | 82° | 54° | 68° | — | — |
| 2006 | 96° | 52° | 74° | — | — |
| 2005 | 87° | 53° | 70° | — | — |
| 2004 | 97° | 55° | 76° | — | — |
| 2003 | 86° | 57° | 72° | — | — |
| 2002 | 83° | 57° | 70° | — | — |
| 2001 | 94° | 57° | 75° | — | — |
| 2000 | 80° | 57° | 69° | — | — |
| 1999 | 76° | 51° | 63° | — | — |
| 1998 | 81° | 54° | 67° | — | — |
| 1997 | 92° | 63° | 77° | — | — |
| 1996 | 84° | 52° | 68° | — | — |
| 1995 | 88° | 56° | 72° | — | — |
| 1994 | 79° | 56° | 67° | — | — |
| 1993 | 83° | 61° | 72° | — | — |
| 1992 | 86° | 60° | 73° | — | — |
| 1991 | 75° | 50° | 63° | — | — |
| 1990 | 75° | 53° | 64° | — | — |
| 1989 | 84° | 53° | 69° | — | — |
| 1988 | 81° | 50° | 65° | — | — |
| 1987 | 88° | 54° | 71° | — | — |
| 1986 | 78° | 59° | 69° | — | — |
| 1985 | 72° | 59° | 65° | — | — |
| 1984 | 89° | 64° | 77° | — | — |
| 1983 | 79° | 60° | 69° | — | — |
| 1982 | 75° | 50° | 63° | — | — |
| 1981 | 82° | 62° | 72° | — | — |
| 1980 | 65° | 55° | 60° | — | — |
| 1979 | 74° | 53° | 63° | — | — |
| 1978 | 84° | 60° | 72° | — | — |
| 1977 | 89° | 55° | 72° | — | — |
| 1976 | 79° | 50° | 64° | — | — |
| 1975 | 79° | 58° | 68° | — | — |
| 1974 | 68° | 57° | 63° | — | — |
| 1973 | 74° | 59° | 66° | — | — |
| 1972 | 90° | 61° | 75° | — | — |
| 1971coldest | 67° | 53° | 60° | — | — |
55 years of data from SANTA FE DAM CALIFORNIA