Weather on June 21 at Channel Islands
Channel Islands National Park
CAPacific West
Avg High84°F
Avg Low52°F
Warmest200887°F
Coldest200359°F
Based on 55 years of data from Ventura, CA
Planning Your Visit
June 21st in Channel Islands National Park (via Ventura, CA) typically brings warm summer weather, with average highs around 84°F and lows near 52°F — a 32°F daily swing. Over 55 years of records, the warmest June 21st was in 2008 (87°F average), while the coldest was 2003 (59°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 2% of June 21st dates historically. The last decade has been 4.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.7°F warmer on this date compared to 20-30 years ago.
Planning for June 21st in Channel Islands? Stay hydrated and seek shade during peak afternoon hours.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 78°F | 49°F | 0" | -- |
| 2024 | 83°F | 49°F | 0" | -- |
| 2023 | 78°F | 44°F | 0" | -- |
| 2022 | 98°F | 51°F | 0" | -- |
| 2021 | 90°F | 49°F | 0" | -- |
| 2020 | 78°F | 57°F | 0" | -- |
| 2019 | 66°F | 58°F | 0.08" | -- |
| 2018 | 88°F | 51°F | 0" | -- |
| 2017 | 99°F | 59°F | 0" | -- |
| 2016 | 111°F | 60°F | 0" | -- |
| 2015 | 96°F | 53°F | 0" | -- |
| 2014 | 91°F | 51°F | 0" | -- |
| 2013 | 88°F | 49°F | 0" | -- |
| 2012 | 72°F | 55°F | -- | -- |
| 2011 | 86°F | 55°F | -- | -- |
| 2010 | 70°F | 50°F | -- | -- |
| 2009 | 70°F | 54°F | -- | -- |
| 2008 | 102°F | 72°F | -- | -- |
| 2007 | 84°F | 50°F | -- | -- |
| 2006 | 81°F | 52°F | -- | -- |
| 2005 | 88°F | 50°F | -- | -- |
| 2004 | 70°F | 54°F | -- | -- |
| 2003 | 64°F | 54°F | -- | -- |
| 2002 | 70°F | 54°F | -- | -- |
| 2001 | 88°F | 54°F | -- | -- |
| 2000 | 88°F | -- | 0" | 0" |
| 1999 | 86°F | 51°F | 0" | 0" |
| 1998 | 77°F | 47°F | 0" | 0" |
| 1997 | 77°F | 60°F | 0" | 0" |
| 1996 | 74°F | 53°F | 0" | 0" |
| 1995 | 82°F | 48°F | 0" | 0" |
| 1994 | 88°F | 52°F | 0" | 0" |
| 1993 | 77°F | 58°F | 0" | 0" |
| 1992 | 85°F | 53°F | 0" | 0" |
| 1991 | 75°F | 46°F | 0" | 0" |
| 1990 | 74°F | 50°F | 0" | 0" |
| 1989 | 94°F | 48°F | 0" | 0" |
| 1988 | 82°F | 48°F | 0" | 0" |
| 1987 | 79°F | 50°F | 0" | 0" |
| 1986 | 83°F | 48°F | 0" | 0" |
| 1985 | 79°F | 47°F | 0" | 0" |
| 1984 | 79°F | 51°F | 0" | 0" |
| 1983 | 76°F | 53°F | 0" | 0" |
| 1982 | 71°F | 54°F | 0" | 0" |
| 1981 | 89°F | 58°F | 0" | 0" |
| 1980 | 83°F | 48°F | 0" | 0" |
| 1979 | 82°F | 47°F | 0" | 0" |
| 1978 | 94°F | 56°F | 0" | 0" |
| 1977 | 82°F | 51°F | 0" | 0" |
| 1976 | 94°F | 49°F | 0" | 0" |
| 1975 | 80°F | 45°F | 0" | 0" |
| 1974 | -- | 50°F | 0" | 0" |
| 1973 | 108°F | 60°F | 0" | 0" |
| 1972 | 89°F | 51°F | 0" | 0" |
| 1971 | 93°F | 58°F | 0" | 0" |
June 21 at Nearby Parks
Holiday Weather at Channel Islands
Official NPS WebsiteVisit nps.gov/chis for park information, alerts, and reservations
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