Weather on November 21 at Channel Islands
Channel Islands National Park
Based on 55 years of data from Ventura, CA
Planning Your Visit
November 21st in Channel Islands National Park (via Ventura, CA) typically brings pleasant fall weather, with average highs around 71°F and lows near 39°F — a 32°F daily swing. Over 55 years of records, the warmest November 21st was in 2002 (70°F average), while the coldest was 2025 (41°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 15% of November 21st dates historically, with the wettest November 21st recording 2.92" of rain. The last decade has been 4.6°F cooler on this date compared to 20-30 years ago.
The last decade has been 4.6°F cooler on this date compared to 20-30 years ago.
Planning for November 21st in Channel Islands? Great weather for outdoor activities.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 49°F | 34°F | 2.92" | -- |
| 2024 | 76°F | 28°F | 0" | -- |
| 2023 | 75°F | 35°F | 0" | -- |
| 2022 | 78°F | 28°F | 0" | -- |
| 2021 | 74°F | 35°F | 0" | -- |
| 2020 | 77°F | 36°F | 0" | -- |
| 2019 | 62°F | 45°F | 0.3" | -- |
| 2018 | 78°F | 33°F | 0" | -- |
| 2017 | 80°F | 48°F | 0" | -- |
| 2016 | 79°F | 31°F | 0.66" | -- |
| 2015 | 90°F | 40°F | 0" | -- |
| 2014 | 71°F | 40°F | 0.03" | -- |
| 2013 | 65°F | 48°F | 0.79" | -- |
| 2012 | 72°F | 43°F | -- | -- |
| 2011 | 59°F | 36°F | -- | -- |
| 2010 | 57°F | 37°F | -- | -- |
| 2009 | 63°F | 36°F | -- | -- |
| 2008 | 86°F | 46°F | -- | -- |
| 2007 | 70°F | 36°F | -- | -- |
| 2006 | 72°F | 45°F | -- | -- |
| 2005 | 82°F | 43°F | -- | -- |
| 2004 | 61°F | 43°F | -- | -- |
| 2003 | 59°F | 43°F | -- | -- |
| 2002 | 88°F | 52°F | -- | -- |
| 2001 | 73°F | 45°F | -- | -- |
| 2000 | 75°F | 39°F | -- | -- |
| 1999 | 70°F | 39°F | 0" | 0" |
| 1998 | 79°F | 36°F | 0" | 0" |
| 1997 | 79°F | 41°F | 0" | 0" |
| 1996 | 66°F | 59°F | 1.85" | 0" |
| 1995 | 76°F | 39°F | 0" | 0" |
| 1994 | 66°F | 30°F | 0" | 0" |
| 1993 | 68°F | 39°F | 0" | 0" |
| 1992 | 66°F | 34°F | 0" | 0" |
| 1991 | 77°F | 40°F | 0" | 0" |
| 1990 | 73°F | 34°F | 0" | 0" |
| 1989 | 76°F | 42°F | 0" | 0" |
| 1988 | 76°F | 34°F | 0" | 0" |
| 1987 | 70°F | 40°F | 0" | 0" |
| 1986 | 74°F | 48°F | 0" | 0" |
| 1985 | 66°F | 32°F | 0" | 0" |
| 1984 | 64°F | 46°F | 0.48" | 0" |
| 1983 | 62°F | 38°F | 0" | 0" |
| 1982 | 64°F | 37°F | 0" | 0" |
| 1981 | 73°F | 40°F | 0" | 0" |
| 1980 | 78°F | 35°F | 0" | 0" |
| 1979 | 67°F | 27°F | 0" | 0" |
| 1978 | 56°F | 46°F | 0.25" | 0" |
| 1977 | 68°F | 41°F | 0" | 0" |
| 1976 | 79°F | 41°F | 0" | 0" |
| 1975 | 74°F | 34°F | 0" | 0" |
| 1974 | 63°F | 48°F | 0" | 0" |
| 1973 | 62°F | 35°F | 0" | 0" |
| 1972 | 70°F | 36°F | 0" | 0" |
| 1971 | 64°F | 33°F | 0" | 0" |