Weather on October 21
Chula Vista, CA
55 Years of Data
Avg High
75°F
Avg Low
57°F
Warmest
1999
75°F avg
Coldest
1971
58°F avg
About This Date
October 21st in Chula Vista, CA typically brings pleasant fall weather, with average highs around 75°F and lows near 57°F. Over 55 years of records, the warmest October 21st was in 1999 (75°F average), while the coldest was 1971 (58°F) — a 17°F range across recorded history. Rain or other precipitation has occurred on about 13% of October 21st dates historically, with the wettest October 21st recording 0.81" of rain. 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 Chula Vista, CA? Great weather for outdoor activities.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 79° | 53° | 66° | — | — |
| 2024 | 83° | 55° | 69° | — | — |
| 2023 | 80° | 59° | 70° | — | — |
| 2022 | 73° | 61° | 67° | — | — |
| 2021 | 71° | 51° | 61° | — | — |
| 2020 | 72° | 65° | 68° | — | — |
| 2019 | 88° | 58° | 73° | — | — |
| 2018 | 72° | 55° | 63° | — | — |
| 2017 | 74° | 56° | 65° | — | — |
| 2016 | 82° | 57° | 70° | — | — |
| 2015 | 79° | 60° | 69° | — | — |
| 2014 | 76° | 66° | 71° | — | — |
| 2013 | 72° | 54° | 63° | — | — |
| 2012 | 70° | 63° | 66° | 0.46" | — |
| 2011 | 69° | 61° | 65° | — | — |
| 2010 | 67° | 58° | 62° | — | — |
| 2009 | 77° | 54° | 65° | — | — |
| 2008 | 69° | 52° | 60° | — | — |
| 2007 | 87° | 54° | 70° | — | — |
| 2006 | 77° | 49° | 63° | — | — |
| 2005 | 71° | 63° | 67° | — | — |
| 2004 | 70° | 59° | 64° | 0.81" | — |
| 2003 | 90° | 59° | 74° | — | — |
| 2002 | 69° | 56° | 62° | — | — |
| 2001 | 75° | 60° | 68° | — | — |
| 2000 | 68° | 63° | 65° | — | — |
| 1999warmest | 92° | 58° | 75° | — | — |
| 1998 | 71° | 51° | 61° | — | — |
| 1997 | 73° | 60° | 67° | — | — |
| 1996 | 77° | 51° | 64° | — | — |
| 1995 | 74° | 63° | 68° | — | — |
| 1994 | 73° | 53° | 63° | — | — |
| 1993 | 86° | 54° | 70° | — | — |
| 1992 | 73° | 58° | 65° | — | — |
| 1991 | 72° | 59° | 65° | — | — |
| 1990 | 86° | 52° | 69° | — | — |
| 1989 | 70° | 59° | 64° | 0.51" | — |
| 1988 | 73° | 64° | 69° | — | — |
| 1987 | 78° | 59° | 69° | — | — |
| 1986 | 82° | 56° | 69° | — | — |
| 1985 | 72° | 56° | 64° | 0.38" | — |
| 1984 | 70° | 51° | 60° | — | — |
| 1983 | 76° | — | — | — | — |
| 1982 | 77° | 56° | 66° | — | — |
| 1981 | 70° | 54° | 62° | — | — |
| 1980 | 83° | 55° | 69° | — | — |
| 1979 | 69° | 56° | 62° | 0.69" | — |
| 1978 | 75° | 65° | 70° | — | — |
| 1977 | 68° | 56° | 62° | — | — |
| 1976 | 73° | 65° | 69° | 0.53" | — |
| 1975 | 68° | 57° | 63° | — | — |
| 1974 | 67° | 61° | 64° | — | — |
| 1973 | 68° | 57° | 63° | — | — |
| 1972 | 67° | 53° | 60° | 0.05" | — |
| 1971coldest | 67° | 50° | 58° | — | — |
55 years of data from CHULA VISTA