Weather on September 18 at Channel Islands
Channel Islands National Park
Based on 55 years of data from Ventura, CA
Planning Your Visit
September 18th in Channel Islands National Park (via Ventura, CA) typically brings warm fall weather, with average highs around 85°F and lows near 53°F — a 32°F daily swing. Over 55 years of records, the warmest September 18th was in 1984 (84°F average), while the coldest was 1999 (53°F) — a 31°F range across recorded history. Rain or other precipitation has occurred on about 2% of September 18th dates historically. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for September 18th in Channel Islands? Stay hydrated and seek shade during peak afternoon hours.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 95°F | 64°F | 0.28" | -- |
| 2024 | 74°F | 42°F | 0" | -- |
| 2023 | 71°F | 61°F | 0" | -- |
| 2022 | 80°F | 54°F | 0" | -- |
| 2021 | 79°F | 42°F | 0" | -- |
| 2020 | 97°F | 57°F | 0" | -- |
| 2019 | 84°F | 48°F | 0" | -- |
| 2018 | 89°F | 42°F | 0" | -- |
| 2017 | 76°F | 49°F | 0" | -- |
| 2016 | 93°F | 49°F | 0" | -- |
| 2015 | 84°F | 49°F | 0" | -- |
| 2014 | 97°F | 56°F | 0" | -- |
| 2013 | 83°F | 48°F | 0" | -- |
| 2012 | 88°F | 52°F | -- | -- |
| 2011 | 86°F | 50°F | -- | -- |
| 2010 | 82°F | 48°F | -- | -- |
| 2009 | 93°F | 57°F | -- | -- |
| 2008 | 86°F | 57°F | -- | -- |
| 2007 | 73°F | 50°F | -- | -- |
| 2006 | 86°F | 50°F | -- | -- |
| 2005 | 75°F | 50°F | -- | -- |
| 2004 | 75°F | 54°F | -- | -- |
| 2003 | 86°F | 52°F | -- | -- |
| 2002 | 77°F | 55°F | -- | -- |
| 2001 | 77°F | 54°F | -- | -- |
| 2000 | 97°F | 57°F | -- | -- |
| 1999 | 65°F | 41°F | 0" | 0" |
| 1998 | 87°F | 52°F | 0" | 0" |
| 1997 | 95°F | 56°F | 0" | 0" |
| 1996 | 83°F | 49°F | 0" | 0" |
| 1995 | 86°F | 50°F | 0" | 0" |
| 1994 | -- | 54°F | 0" | 0" |
| 1993 | 79°F | 45°F | 0" | 0" |
| 1992 | 92°F | 58°F | 0" | 0" |
| 1991 | 95°F | 55°F | 0" | 0" |
| 1990 | 80°F | 57°F | 0" | 0" |
| 1989 | 82°F | 59°F | 0" | 0" |
| 1988 | 76°F | 50°F | 0" | 0" |
| 1987 | 85°F | 55°F | 0" | 0" |
| 1986 | 84°F | 56°F | 0" | 0" |
| 1985 | 71°F | 45°F | 0" | 0" |
| 1984 | 101°F | 68°F | 0" | 0" |
| 1983 | 91°F | 58°F | 0" | 0" |
| 1982 | 82°F | 62°F | 0" | 0" |
| 1981 | 94°F | 55°F | 0" | 0" |
| 1980 | 91°F | 56°F | 0" | 0" |
| 1979 | 105°F | 56°F | 0" | 0" |
| 1978 | 80°F | 43°F | 0" | 0" |
| 1977 | 85°F | 52°F | 0" | 0" |
| 1976 | 79°F | 51°F | 0" | 0" |
| 1975 | 90°F | 59°F | 0" | 0" |
| 1974 | 87°F | 52°F | 0" | 0" |
| 1973 | 77°F | 49°F | 0" | 0" |
| 1972 | 80°F | 50°F | 0" | 0" |
| 1971 | 84°F | 57°F | 0" | 0" |