Weather on September 17
Corona, CA
55 Years of Data
Avg High
87°F
Avg Low
57°F
Warmest
1984
85°F avg
Coldest
2024
63°F avg
About This Date
September 17th 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 17th was in 1984 (85°F average), while the coldest was 2024 (63°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 2% of September 17th dates historically. The last decade has been 2.8°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.8°F cooler on this date compared to 20-30 years ago.
Planning for September 17th in Corona, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 95° | 64° | 80° | — | — |
| 2024coldest | 78° | 49° | 63° | — | — |
| 2023 | 75° | 64° | 70° | — | — |
| 2022 | 82° | 57° | 70° | — | — |
| 2021 | 83° | 52° | 67° | — | — |
| 2020 | 100° | 51° | 76° | — | — |
| 2019 | 85° | 54° | 69° | — | — |
| 2018 | 91° | 48° | 70° | — | — |
| 2017 | 78° | 57° | 68° | — | — |
| 2016 | 90° | 46° | 68° | — | — |
| 2015 | 83° | 56° | 69° | — | — |
| 2014 | 99° | 71° | 85° | — | — |
| 2013 | 84° | 55° | 70° | — | — |
| 2012 | 88° | 57° | 72° | — | — |
| 2011 | 80° | 59° | 70° | — | — |
| 2010 | 88° | 55° | 71° | — | — |
| 2009 | 96° | 63° | 79° | — | — |
| 2008 | 91° | 63° | 77° | — | — |
| 2007 | 79° | 57° | 68° | — | — |
| 2006 | 95° | 50° | 73° | — | — |
| 2005 | 84° | 56° | 70° | — | — |
| 2004 | 88° | 61° | 74° | — | — |
| 2003 | 86° | 57° | 72° | — | — |
| 2002 | 87° | 58° | 72° | — | — |
| 2001 | 84° | 55° | 70° | — | — |
| 2000 | 103° | 64° | 83° | — | — |
| 1999 | 80° | 58° | 69° | — | — |
| 1998 | 91° | 56° | 73° | — | — |
| 1987 | 86° | 58° | 72° | — | — |
| 1986 | 86° | 53° | 70° | — | — |
| 1985 | 82° | 57° | 70° | — | — |
| 1984warmest | 100° | 70° | 85° | — | — |
| 1983 | 95° | 63° | 79° | — | — |
| 1982 | 75° | 54° | 64° | 0.13" | — |
| 1981 | 98° | 60° | 79° | — | — |
| 1980 | 100° | 62° | 81° | — | — |
| 1979 | 104° | 60° | 82° | — | — |
| 1978 | 77° | 55° | 66° | — | — |
| 1977 | 79° | 51° | 65° | — | — |
| 1976 | 78° | 58° | 68° | — | — |
| 1975 | 96° | 65° | 80° | — | — |
| 1974 | 86° | 50° | 68° | — | — |
| 1973 | 81° | 50° | 65° | — | — |
| 1972 | 81° | 52° | 66° | — | — |
| 1971 | 79° | 66° | 72° | — | — |
45 years of data from CORONA CALIFORNIA