Weather on June 21
Oceanside, CA
55 Years of Data
Avg High
72°F
Avg Low
59°F
Warmest
1973
76°F avg
Coldest
1988
59°F avg
About This Date
June 21st in Oceanside, CA typically brings pleasant summer weather, with average highs around 72°F and lows near 59°F. Over 54 years of records, the warmest June 21st was in 1973 (76°F average), while the coldest was 1988 (59°F) — a 17°F range across recorded history. Rain or other precipitation has occurred on about 7% of June 21st dates historically. The last decade has been 1.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.5°F warmer on this date compared to 20-30 years ago.
Planning for June 21st in Oceanside, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 71° | 58° | 64° | — | — |
| 2024 | 76° | 57° | 66° | — | — |
| 2023 | 74° | 52° | 63° | — | — |
| 2022 | 77° | 57° | 67° | — | — |
| 2021 | 73° | 61° | 67° | — | — |
| 2020 | 74° | 65° | 69° | — | — |
| 2019 | 73° | 61° | 67° | 0.13" | — |
| 2018 | 73° | 64° | 69° | — | — |
| 2017 | 73° | 63° | 68° | — | — |
| 2016 | 75° | 60° | 68° | — | — |
| 2015 | 76° | 60° | 68° | — | — |
| 2014 | 76° | 60° | 68° | — | — |
| 2013 | 76° | 54° | 65° | — | — |
| 2012 | 74° | 61° | 67° | — | — |
| 2011 | 74° | 57° | 65° | — | — |
| 2010 | 70° | 49° | 59° | — | — |
| 2009 | 72° | 57° | 64° | — | — |
| 2008 | 92° | 60° | 76° | — | — |
| 2007 | 71° | 55° | 63° | — | — |
| 2006 | 75° | 60° | 68° | — | — |
| 2005 | 77° | 54° | 65° | 0.03" | — |
| 2004 | 72° | 61° | 66° | — | — |
| 2003 | 67° | 60° | 63° | 0.03" | — |
| 2002 | 70° | 61° | 65° | — | — |
| 2001 | 77° | 55° | 66° | — | — |
| 2000 | 74° | 60° | 67° | — | — |
| 1999 | 69° | 58° | 63° | — | — |
| 1998 | 68° | 64° | 66° | — | — |
| 1997 | 74° | 57° | 65° | — | — |
| 1996 | 74° | 60° | 67° | — | — |
| 1995 | 64° | 56° | 60° | — | — |
| 1994 | 68° | 63° | 65° | — | — |
| 1993 | 69° | 64° | 67° | — | — |
| 1992 | 65° | 60° | 62° | — | — |
| 1991 | 63° | 58° | 60° | — | — |
| 1990 | 65° | 61° | 63° | — | — |
| 1989 | 69° | 57° | 63° | — | — |
| 1988coldest | 65° | 53° | 59° | — | — |
| 1987 | 65° | 61° | 63° | — | — |
| 1986 | 68° | 62° | 65° | — | — |
| 1985 | 66° | 62° | 64° | — | — |
| 1984 | 70° | 59° | 64° | — | — |
| 1983 | 69° | 63° | 66° | — | — |
| 1982 | 66° | 59° | 63° | — | — |
| 1981 | 85° | 65° | 75° | — | — |
| 1980 | 67° | 58° | 62° | — | — |
| 1978 | 72° | 54° | 63° | — | — |
| 1977 | 70° | 59° | 64° | — | — |
| 1976 | 76° | 53° | 64° | — | — |
| 1975 | 69° | 53° | 61° | — | — |
| 1974 | 73° | 58° | 65° | — | — |
| 1973warmest | 89° | 63° | 76° | — | — |
| 1972 | 74° | 60° | 67° | 0.28" | — |
| 1971 | 75° | 61° | 68° | — | — |
54 years of data from OCEANSIDE MUNI AP