Weather on September 20
Corona, CA
55 Years of Data
Avg High
87°F
Avg Low
56°F
Warmest
1984
82°F avg
Coldest
1986
61°F avg
About This Date
September 20th in Corona, CA typically brings warm fall weather, with average highs around 87°F and lows near 56°F — a 31°F daily swing. Over 45 years of records, the warmest September 20th was in 1984 (82°F average), while the coldest was 1986 (61°F) — a 21°F range across recorded history. Rain or other precipitation has occurred on about 2% of September 20th dates historically. The last decade has been 1.4°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.4°F cooler on this date compared to 20-30 years ago.
Planning for September 20th in Corona, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 91° | 60° | 76° | — | — |
| 2024 | 80° | 56° | 68° | — | — |
| 2023 | 80° | 60° | 70° | — | — |
| 2022 | 87° | 57° | 72° | — | — |
| 2021 | 89° | 52° | 70° | — | — |
| 2020 | 89° | 57° | 73° | — | — |
| 2019 | 85° | 55° | 70° | — | — |
| 2018 | 86° | 51° | 69° | — | — |
| 2017 | 78° | 61° | 69° | — | — |
| 2016 | 84° | 62° | 73° | — | — |
| 2015 | 104° | 61° | 82° | — | — |
| 2014 | 81° | 59° | 70° | — | — |
| 2013 | 77° | 57° | 67° | — | — |
| 2012 | 96° | 52° | 74° | — | — |
| 2011 | 88° | 59° | 73° | — | — |
| 2010 | 87° | 58° | 72° | — | — |
| 2009 | 95° | 63° | 79° | — | — |
| 2008 | 85° | 59° | 72° | — | — |
| 2007 | 73° | 55° | 64° | — | — |
| 2006 | 84° | 52° | 68° | — | — |
| 2005 | 85° | 63° | 74° | — | — |
| 2004 | 79° | 54° | 66° | — | — |
| 2003 | 96° | 59° | 78° | — | — |
| 2002 | 94° | 58° | 76° | — | — |
| 2001 | 85° | 56° | 70° | — | — |
| 2000 | 87° | 63° | 75° | — | — |
| 1999 | 91° | 50° | 71° | — | — |
| 1998 | 75° | 62° | 69° | — | — |
| 1987 | 92° | 54° | 73° | — | — |
| 1986coldest | 74° | 49° | 61° | — | — |
| 1985 | 90° | 49° | 69° | — | — |
| 1984warmest | 98° | 66° | 82° | — | — |
| 1983 | 85° | 66° | 75° | 0.33" | — |
| 1982 | 90° | 53° | 71° | — | — |
| 1981 | 94° | 60° | 77° | — | — |
| 1980 | 84° | 52° | 68° | — | — |
| 1979 | 99° | 57° | 78° | — | — |
| 1978 | 87° | 46° | 67° | — | — |
| 1977 | 83° | 52° | 67° | — | — |
| 1976 | 78° | 62° | 70° | — | — |
| 1975 | 92° | 55° | 73° | — | — |
| 1974 | 88° | 56° | 72° | — | — |
| 1973 | 79° | 49° | 64° | — | — |
| 1972 | 92° | 51° | 71° | — | — |
| 1971 | 84° | 51° | 68° | — | — |
45 years of data from CORONA CALIFORNIA