Weather on October 21
Corona, CA
55 Years of Data
Avg High
82°F
Avg Low
51°F
Warmest
2003
84°F avg
Coldest
1972
58°F avg
About This Date
October 21st in Corona, CA typically brings warm fall weather, with average highs around 82°F and lows near 51°F — a 31°F daily swing. Over 44 years of records, the warmest October 21st was in 2003 (84°F average), while the coldest was 1972 (58°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 2% of October 21st dates historically. 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 October 21st 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 | 89° | 46° | 68° | — | — |
| 2024 | 90° | 44° | 67° | — | — |
| 2023 | 89° | 52° | 70° | — | — |
| 2022 | 83° | 54° | 68° | — | — |
| 2021 | 82° | 40° | 61° | — | — |
| 2020 | 78° | 56° | 67° | — | — |
| 2019 | 94° | 56° | 75° | — | — |
| 2018 | 83° | 46° | 64° | — | — |
| 2017 | 82° | 46° | 64° | — | — |
| 2016 | 95° | 47° | 71° | — | — |
| 2015 | 86° | 51° | 69° | — | — |
| 2014 | 81° | 52° | 66° | — | — |
| 2013 | 81° | 39° | 60° | — | — |
| 2012 | 75° | 61° | 68° | — | — |
| 2011 | 77° | 57° | 67° | — | — |
| 2010 | 66° | 59° | 63° | — | — |
| 2009 | 87° | 53° | 70° | — | — |
| 2008 | 94° | 52° | 73° | — | — |
| 2006 | 92° | 46° | 69° | — | — |
| 2005 | 74° | 57° | 65° | — | — |
| 2004 | 70° | 52° | 61° | — | — |
| 2003warmest | 104° | 64° | 84° | — | — |
| 2002 | 69° | 55° | 62° | — | — |
| 2001 | 74° | 57° | 65° | — | — |
| 2000 | 71° | 59° | 65° | 0.05" | — |
| 1999 | 96° | 50° | 73° | — | — |
| 1998 | 82° | 47° | 64° | — | — |
| 1987 | 80° | 54° | 67° | — | — |
| 1986 | 86° | 47° | 66° | — | — |
| 1985 | 75° | 55° | 65° | — | — |
| 1984 | 74° | 48° | 61° | — | — |
| 1983 | 86° | 55° | 71° | — | — |
| 1982 | 84° | 51° | 68° | — | — |
| 1981 | 86° | 47° | 66° | — | — |
| 1980 | 90° | 46° | 68° | — | — |
| 1979 | 77° | 44° | 61° | — | — |
| 1978 | 78° | 58° | 68° | — | — |
| 1977 | 75° | 54° | 64° | — | — |
| 1976 | 80° | 59° | 70° | — | — |
| 1975 | 75° | 48° | 62° | — | — |
| 1974 | 72° | 54° | 63° | — | — |
| 1973 | 76° | 50° | 63° | — | — |
| 1972coldest | 71° | 45° | 58° | — | — |
| 1971 | 83° | 41° | 62° | — | — |
44 years of data from CORONA CALIFORNIA