Weather on September 1
West Covina, CA
55 Years of Data
Avg High
93°F
Avg Low
63°F
Warmest
1998
94°F avg
Coldest
1973
68°F avg
About This Date
September 1st in West Covina, CA typically brings hot fall weather, with average highs around 93°F and lows near 63°F — a 30°F daily swing. Over 55 years of records, the warmest September 1st was in 1998 (94°F average), while the coldest was 1973 (68°F) — a 26°F range across recorded history. This date has historically been dry, with little recorded precipitation. 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 September 1st in West Covina, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.2°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 96° | 67° | 81° | — | — |
| 2024 | 95° | 61° | 78° | — | — |
| 2023 | 89° | 63° | 76° | — | — |
| 2022 | 105° | 74° | 89° | — | — |
| 2021 | 80° | 66° | 73° | — | — |
| 2020 | 88° | 60° | 74° | — | — |
| 2019 | 96° | 65° | 80° | — | — |
| 2018 | 87° | 63° | 75° | — | — |
| 2017 | 108° | 72° | 90° | — | — |
| 2016 | 93° | 62° | 78° | — | — |
| 2015 | 93° | 68° | 81° | — | — |
| 2014 | 96° | 65° | 80° | — | — |
| 2013 | 98° | 71° | 85° | — | — |
| 2012 | 100° | 57° | 79° | — | — |
| 2011 | 92° | 53° | 72° | — | — |
| 2010 | 97° | 55° | 76° | — | — |
| 2009 | 102° | 70° | 86° | — | — |
| 2008 | 92° | 65° | 78° | — | — |
| 2007 | 108° | 70° | 89° | — | — |
| 2006 | 100° | 57° | 79° | — | — |
| 2005 | 94° | 54° | 74° | — | — |
| 2004 | 104° | 58° | 81° | — | — |
| 2003 | 94° | 62° | 78° | — | — |
| 2002 | 113° | 69° | 91° | — | — |
| 2001 | 92° | 59° | 75° | — | — |
| 2000 | 77° | 59° | 68° | — | — |
| 1999 | 82° | 59° | 71° | — | — |
| 1998warmest | 111° | 77° | 94° | — | — |
| 1997 | 98° | 62° | 80° | — | — |
| 1996 | 96° | 61° | 78° | — | — |
| 1995 | 100° | 65° | 82° | — | — |
| 1994 | 88° | 61° | 74° | — | — |
| 1993 | 93° | 63° | 78° | — | — |
| 1992 | 82° | 61° | 71° | — | — |
| 1991 | 93° | 63° | 78° | — | — |
| 1990 | 90° | 59° | 74° | — | — |
| 1989 | 90° | 55° | 72° | — | — |
| 1988 | 91° | 64° | 78° | — | — |
| 1987 | 107° | 66° | 87° | — | — |
| 1986 | 85° | 65° | 75° | — | — |
| 1985 | 96° | 67° | 81° | — | — |
| 1984 | 93° | 69° | 81° | — | — |
| 1983 | 92° | 65° | 78° | — | — |
| 1982 | 100° | 64° | 82° | — | — |
| 1981 | 89° | 62° | 76° | — | — |
| 1980 | 83° | 57° | 70° | — | — |
| 1979 | 85° | 64° | 74° | — | — |
| 1978 | 90° | 60° | 75° | — | — |
| 1977 | 85° | 60° | 72° | — | — |
| 1976 | 92° | 65° | 78° | — | — |
| 1975 | 85° | 57° | 71° | — | — |
| 1974 | 95° | 57° | 76° | — | — |
| 1973coldest | 82° | 53° | 68° | — | — |
| 1972 | 86° | 66° | 76° | — | — |
| 1971 | 88° | 58° | 73° | — | — |
55 years of data from SANTA FE DAM CALIFORNIA