Weather on September 28
Corona, CA
55 Years of Data
Avg High
87°F
Avg Low
57°F
Warmest
2010
86°F avg
Coldest
1971
63°F avg
About This Date
September 28th in Corona, CA typically brings warm fall weather, with average highs around 87°F and lows near 57°F — a 30°F daily swing. Over 45 years of records, the warmest September 28th was in 2010 (86°F average), while the coldest was 1971 (63°F) — a 23°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 1.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.0°F warmer on this date compared to 20-30 years ago.
Planning for September 28th in Corona, 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 |
|---|---|---|---|---|---|
| 2025 | 83° | 61° | 72° | — | — |
| 2024 | 87° | 53° | 70° | — | — |
| 2023 | 81° | 56° | 68° | — | — |
| 2022 | 97° | 61° | 79° | — | — |
| 2021 | 76° | 61° | 68° | — | — |
| 2020 | 95° | 55° | 75° | — | — |
| 2019 | 77° | 58° | 67° | — | — |
| 2018 | 87° | 60° | 74° | — | — |
| 2017 | 96° | 56° | 76° | — | — |
| 2016 | 95° | 65° | 80° | — | — |
| 2015 | 92° | 57° | 74° | — | — |
| 2014 | 80° | 51° | 66° | — | — |
| 2013 | 93° | 39° | 66° | — | — |
| 2012 | 92° | 54° | 73° | — | — |
| 2011 | 84° | 59° | 72° | — | — |
| 2010warmest | 100° | 72° | 86° | — | — |
| 2009 | 86° | 60° | 73° | — | — |
| 2008 | 95° | 63° | 79° | — | — |
| 2007 | 72° | 59° | 65° | — | — |
| 2006 | 95° | 53° | 74° | — | — |
| 2005 | 96° | 59° | 78° | — | — |
| 2004 | 79° | 57° | 68° | — | — |
| 2003 | 82° | 60° | 71° | — | — |
| 2002 | 70° | 61° | 65° | — | — |
| 2001 | 96° | 63° | 79° | — | — |
| 2000 | 80° | 60° | 70° | — | — |
| 1999 | 103° | 58° | 80° | — | — |
| 1998 | 78° | 50° | 64° | — | — |
| 1987 | 93° | 58° | 75° | — | — |
| 1986 | 75° | 51° | 63° | — | — |
| 1985 | 81° | 59° | 70° | — | — |
| 1984 | 99° | 61° | 80° | — | — |
| 1983 | 78° | 59° | 69° | — | — |
| 1982 | 78° | 55° | 67° | — | — |
| 1981 | 86° | 51° | 69° | — | — |
| 1980 | 86° | 51° | 69° | — | — |
| 1979 | 85° | 55° | 70° | — | — |
| 1978 | 101° | 66° | 83° | — | — |
| 1977 | 82° | 57° | 70° | — | — |
| 1976 | 83° | 55° | 69° | — | — |
| 1975 | 82° | 52° | 67° | — | — |
| 1974 | 81° | 50° | 65° | — | — |
| 1973 | 98° | 53° | 76° | — | — |
| 1972 | 81° | 54° | 67° | — | — |
| 1971coldest | 80° | 46° | 63° | — | — |
45 years of data from CORONA CALIFORNIA