Weather on September 15
Corona, CA
55 Years of Data
Avg High
89°F
Avg Low
58°F
Warmest
1979
86°F avg
Coldest
2016
64°F avg
About This Date
September 15th in Corona, CA typically brings warm fall weather, with average highs around 89°F and lows near 58°F — a 31°F daily swing. Over 45 years of records, the warmest September 15th was in 1979 (86°F average), while the coldest was 2016 (64°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 4% of September 15th dates historically, with the wettest September 15th recording 4.01" of rain. The last decade has been 3.8°F cooler on this date compared to 20-30 years ago.
The last decade has been 3.8°F cooler on this date compared to 20-30 years ago.
Planning for September 15th in Corona, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 93° | 55° | 74° | — | — |
| 2024 | 79° | 64° | 71° | — | — |
| 2023 | 80° | 61° | 70° | — | — |
| 2022 | 84° | 61° | 72° | — | — |
| 2021 | 85° | 54° | 69° | — | — |
| 2020 | 94° | 54° | 74° | — | — |
| 2019 | 97° | 57° | 77° | — | — |
| 2018 | 92° | 52° | 72° | — | — |
| 2017 | 77° | 56° | 66° | — | — |
| 2016coldest | 84° | 44° | 64° | — | — |
| 2015 | 82° | 67° | 74° | 4.01" | — |
| 2014 | 105° | 67° | 86° | — | — |
| 2013 | 97° | 56° | 76° | — | — |
| 2012 | 107° | 56° | 81° | — | — |
| 2011 | 85° | 60° | 72° | — | — |
| 2010 | 90° | 57° | 73° | — | — |
| 2009 | 86° | 60° | 73° | — | — |
| 2008 | 97° | 61° | 79° | — | — |
| 2007 | 91° | 55° | 73° | — | — |
| 2006 | 76° | 59° | 67° | — | — |
| 2005 | 82° | 55° | 69° | — | — |
| 2004 | 86° | 64° | 75° | — | — |
| 2003 | 92° | 61° | 76° | — | — |
| 2002 | 96° | 60° | 78° | — | — |
| 2001 | 93° | 61° | 77° | — | — |
| 2000 | 99° | 62° | 80° | — | — |
| 1999 | 82° | 55° | 69° | — | — |
| 1998 | 89° | 59° | 74° | — | — |
| 1987 | 87° | 57° | 72° | — | — |
| 1986 | 81° | 51° | 66° | — | — |
| 1985 | 89° | 53° | 71° | — | — |
| 1984 | 101° | 61° | 81° | 0.46" | — |
| 1983 | 94° | 63° | 78° | — | — |
| 1982 | 77° | 61° | 69° | — | — |
| 1981 | 92° | 58° | 75° | — | — |
| 1980 | 82° | 48° | 65° | — | — |
| 1979warmest | 108° | 64° | 86° | — | — |
| 1978 | 81° | 51° | 66° | — | — |
| 1977 | 79° | 53° | 66° | — | — |
| 1976 | 75° | 64° | 70° | — | — |
| 1975 | 93° | 57° | 75° | — | — |
| 1974 | 88° | 50° | 69° | — | — |
| 1973 | 82° | 54° | 68° | — | — |
| 1972 | 82° | 52° | 67° | — | — |
| 1971 | 97° | 64° | 80° | — | — |
45 years of data from CORONA CALIFORNIA