Weather on August 18 at Channel Islands
Channel Islands National Park
Based on 54 years of data from Ventura, CA
Planning Your Visit
August 18th in Channel Islands National Park (via Ventura, CA) typically brings warm summer weather, with average highs around 88°F and lows near 56°F — a 32°F daily swing. Over 54 years of records, the warmest August 18th was in 2020 (83°F average), while the coldest was 1975 (63°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 2% of August 18th dates historically, with the wettest August 18th recording 0.99" of rain. The last decade has been 3.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.4°F warmer on this date compared to 20-30 years ago.
Planning for August 18th in Channel Islands? Stay hydrated and seek shade during peak afternoon hours.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 85°F | 55°F | 0" | -- |
| 2024 | 85°F | 52°F | 0" | -- |
| 2023 | 102°F | 53°F | 0" | -- |
| 2022 | 97°F | 55°F | 0" | -- |
| 2021 | 88°F | 62°F | 0" | -- |
| 2020 | 102°F | 64°F | 0" | -- |
| 2019 | 81°F | 54°F | 0" | -- |
| 2018 | 93°F | 61°F | 0" | -- |
| 2017 | 86°F | 52°F | 0" | -- |
| 2016 | 97°F | 44°F | 0" | -- |
| 2015 | 94°F | 59°F | 0" | -- |
| 2014 | 99°F | 55°F | 0" | -- |
| 2013 | 99°F | 53°F | 0" | -- |
| 2012 | 91°F | 68°F | -- | -- |
| 2011 | 90°F | 57°F | -- | -- |
| 2010 | 91°F | 63°F | -- | -- |
| 2009 | 87°F | 50°F | 0" | 0" |
| 2008 | 84°F | 57°F | -- | -- |
| 2007 | 91°F | 61°F | -- | -- |
| 2006 | 82°F | 52°F | -- | -- |
| 2005 | 75°F | 52°F | -- | -- |
| 2004 | 84°F | 55°F | -- | -- |
| 2003 | 90°F | 59°F | -- | -- |
| 2002 | 73°F | 57°F | -- | -- |
| 2001 | 90°F | 59°F | -- | -- |
| 2000 | 86°F | 55°F | -- | -- |
| 1999 | 92°F | 55°F | 0" | 0" |
| 1998 | 82°F | 54°F | 0" | 0" |
| 1997 | 91°F | 51°F | 0" | 0" |
| 1996 | 84°F | 55°F | 0" | 0" |
| 1995 | 88°F | 51°F | 0" | 0" |
| 1994 | 89°F | 61°F | 0" | 0" |
| 1993 | 88°F | 53°F | 0" | 0" |
| 1992 | 100°F | 63°F | 0" | 0" |
| 1991 | 81°F | 58°F | 0" | 0" |
| 1990 | 80°F | 59°F | 0" | 0" |
| 1989 | 79°F | 54°F | 0" | 0" |
| 1988 | 76°F | 55°F | 0" | 0" |
| 1987 | 82°F | 47°F | 0" | 0" |
| 1986 | 98°F | 56°F | 0" | 0" |
| 1985 | 77°F | 54°F | 0" | 0" |
| 1984 | 91°F | 69°F | 0" | 0" |
| 1982 | 92°F | 51°F | 0" | 0" |
| 1981 | 83°F | 56°F | 0" | 0" |
| 1980 | 79°F | 51°F | 0" | 0" |
| 1979 | 86°F | 52°F | 0" | 0" |
| 1978 | 89°F | 49°F | 0" | 0" |
| 1977 | 85°F | 67°F | 0.99" | 0" |
| 1976 | 80°F | 53°F | 0" | 0" |
| 1975 | 79°F | 48°F | 0" | 0" |
| 1974 | 89°F | 50°F | 0" | 0" |
| 1973 | 95°F | 61°F | 0" | 0" |
| 1972 | 82°F | 52°F | 0" | 0" |
| 1971 | 91°F | 59°F | 0" | 0" |