Weather on May 21
Chula Vista, CA
55 Years of Data
Avg High
69°F
Avg Low
58°F
Warmest
2008
71°F avg
Coldest
1975
55°F avg
About This Date
May 21st in Chula Vista, CA typically brings mild spring weather, with average highs around 69°F and lows near 58°F. Over 55 years of records, the warmest May 21st was in 2008 (71°F average), while the coldest was 1975 (55°F) — a 16°F range across recorded history. Rain or other precipitation has occurred on about 5% of May 21st dates historically. The last decade has been 1.7°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.7°F cooler on this date compared to 20-30 years ago.
Planning for May 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 | 72° | 60° | 66° | — | — |
| 2024 | 67° | 59° | 63° | — | — |
| 2023 | 68° | 60° | 64° | — | — |
| 2022 | 66° | 58° | 62° | 0.03" | — |
| 2021 | 65° | 55° | 60° | — | — |
| 2020 | 74° | 54° | 64° | — | — |
| 2019 | 66° | 58° | 62° | 0.3" | — |
| 2018 | 65° | 57° | 61° | 0.03" | — |
| 2017 | 75° | 58° | 66° | — | — |
| 2016 | 66° | 58° | 62° | — | — |
| 2015 | 67° | 60° | 63° | — | — |
| 2014 | 68° | 57° | 63° | — | — |
| 2013 | 71° | 62° | 67° | — | — |
| 2012 | 76° | 59° | 67° | — | — |
| 2011 | 67° | 59° | 63° | — | — |
| 2010 | 71° | 60° | 66° | — | — |
| 2009 | 71° | 60° | 66° | — | — |
| 2008warmest | 82° | 60° | 71° | — | — |
| 2007 | 67° | 58° | 62° | — | — |
| 2006 | 77° | 59° | 68° | — | — |
| 2005 | 83° | 54° | 68° | — | — |
| 2004 | 67° | 60° | 63° | — | — |
| 2003 | 73° | 57° | 65° | — | — |
| 2002 | 67° | — | — | — | — |
| 2001 | 72° | 60° | 66° | — | — |
| 2000 | 73° | 56° | 64° | — | — |
| 1999 | 63° | 58° | 60° | — | — |
| 1998 | 67° | 52° | 59° | — | — |
| 1997 | 76° | 65° | 70° | — | — |
| 1996 | 73° | 61° | 67° | — | — |
| 1995 | 67° | 58° | 62° | — | — |
| 1994 | 69° | 52° | 60° | — | — |
| 1993 | 71° | 60° | 66° | — | — |
| 1992 | 71° | 61° | 66° | — | — |
| 1991 | 65° | 56° | 60° | — | — |
| 1990 | 71° | 57° | 64° | — | — |
| 1989 | 73° | 54° | 63° | — | — |
| 1988 | 75° | 60° | 68° | — | — |
| 1987 | 70° | 56° | 63° | — | — |
| 1986 | 70° | 60° | 65° | — | — |
| 1985 | 72° | — | — | — | — |
| 1984 | 70° | 59° | 64° | — | — |
| 1983 | 73° | 62° | 68° | — | — |
| 1982 | 71° | 60° | 66° | — | — |
| 1981 | 65° | 53° | 59° | — | — |
| 1980 | 63° | 58° | 60° | — | — |
| 1979 | 66° | 59° | 63° | — | — |
| 1978 | 68° | 61° | 64° | — | — |
| 1977 | 67° | 58° | 62° | — | — |
| 1976 | 65° | 58° | 61° | — | — |
| 1975coldest | 59° | 51° | 55° | — | — |
| 1974 | 66° | 49° | 57° | — | — |
| 1973 | 63° | 58° | 60° | — | — |
| 1972 | 64° | 51° | 58° | — | — |
| 1971 | 67° | 55° | 61° | — | — |
55 years of data from CHULA VISTA