Weather on December 18 at Channel Islands
Channel Islands National Park
Based on 54 years of data from Ventura, CA
Planning Your Visit
December 18th in Channel Islands National Park (via Ventura, CA) typically brings mild winter weather, with average highs around 67°F and lows near 36°F — a 31°F daily swing. Over 54 years of records, the warmest December 18th was in 2025 (62°F average), while the coldest was 2016 (42°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 13% of December 18th dates historically, with the wettest December 18th recording 2.64" of rain. The last decade has been 2.6°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.6°F cooler on this date compared to 20-30 years ago.
Planning for December 18th in Channel Islands? Great weather for outdoor activities.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 81°F | 43°F | 0" | -- |
| 2024 | 79°F | 37°F | 0" | -- |
| 2023 | 74°F | 46°F | 0" | -- |
| 2022 | 64°F | 28°F | 0" | -- |
| 2021 | 66°F | 27°F | 0" | -- |
| 2020 | 67°F | 29°F | 0" | -- |
| 2019 | 69°F | 28°F | 0" | -- |
| 2018 | 62°F | 37°F | 0.03" | -- |
| 2017 | 72°F | 30°F | 0" | -- |
| 2016 | 60°F | 25°F | 0" | -- |
| 2015 | 66°F | 28°F | 0" | -- |
| 2014 | 58°F | 38°F | 0.03" | -- |
| 2013 | 73°F | 43°F | 0" | -- |
| 2012 | 59°F | 45°F | -- | -- |
| 2011 | 61°F | 37°F | -- | -- |
| 2010 | 55°F | 52°F | -- | -- |
| 2009 | 75°F | 43°F | -- | -- |
| 2008 | 55°F | 30°F | -- | -- |
| 2007 | 50°F | 46°F | -- | -- |
| 2006 | 55°F | 30°F | -- | -- |
| 2005 | 57°F | 43°F | -- | -- |
| 2004 | 81°F | 34°F | -- | -- |
| 2003 | 79°F | 36°F | -- | -- |
| 2002 | 59°F | 36°F | -- | -- |
| 2001 | 66°F | 34°F | -- | -- |
| 2000 | 77°F | 37°F | -- | -- |
| 1999 | 84°F | 35°F | 0" | 0" |
| 1998 | 60°F | 47°F | 0" | -- |
| 1996 | 71°F | 35°F | 0" | 0" |
| 1995 | 64°F | 32°F | 0" | 0" |
| 1994 | 71°F | 35°F | 0" | 0" |
| 1993 | 64°F | 36°F | 0" | 0" |
| 1992 | 59°F | 30°F | 1.17" | 0" |
| 1991 | 69°F | 42°F | 0" | 0" |
| 1990 | 63°F | 28°F | 0" | 0" |
| 1989 | 62°F | 35°F | 0" | 0" |
| 1988 | 57°F | 41°F | 1.04" | 0" |
| 1987 | 66°F | 32°F | 0" | 0" |
| 1986 | 72°F | 37°F | 0" | 0" |
| 1985 | 81°F | 36°F | 0" | 0" |
| 1984 | -- | 31°F | 0.13" | 0" |
| 1983 | 67°F | 37°F | 0" | 0" |
| 1982 | 73°F | 23°F | 0" | 0" |
| 1981 | 69°F | 40°F | 0" | 0" |
| 1980 | 69°F | 42°F | 0" | 0" |
| 1979 | 75°F | 36°F | 0" | 0" |
| 1978 | 52°F | 43°F | 2.64" | 0" |
| 1977 | 65°F | 45°F | 2.18" | 0" |
| 1976 | 68°F | 36°F | 0" | 0" |
| 1975 | 74°F | 32°F | 0" | 0" |
| 1974 | 68°F | 33°F | 0" | 0" |
| 1973 | 73°F | 37°F | 0" | 0" |
| 1972 | 73°F | 40°F | 0" | 0" |
| 1971 | 66°F | 37°F | 0" | 0" |