Weather on September 15 at Channel Islands
Channel Islands National Park
Based on 55 years of data from Ventura, CA
Planning Your Visit
September 15th in Channel Islands National Park (via Ventura, CA) typically brings warm fall weather, with average highs around 86°F and lows near 53°F — a 33°F daily swing. Over 55 years of records, the warmest September 15th was in 2014 (85°F average), while the coldest was 1980 (59°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 2% of September 15th dates historically, with the wettest September 15th recording 0.86" of rain. The last decade has been 1.6°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.6°F cooler on this date compared to 20-30 years ago.
Planning for September 15th in Channel Islands? Stay hydrated and seek shade during peak afternoon hours.
Year by Year History
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 88°F | 53°F | 0" | -- |
| 2024 | 75°F | 55°F | 0" | -- |
| 2023 | 79°F | 54°F | 0" | -- |
| 2022 | 82°F | 50°F | 0" | -- |
| 2021 | 91°F | 44°F | 0" | -- |
| 2020 | 95°F | 49°F | 0" | -- |
| 2019 | 100°F | 51°F | 0" | -- |
| 2018 | 96°F | 47°F | 0" | -- |
| 2017 | 69°F | 51°F | 0" | -- |
| 2016 | 78°F | 43°F | 0" | -- |
| 2015 | 88°F | 54°F | 0.86" | -- |
| 2014 | 105°F | 65°F | 0" | -- |
| 2013 | 101°F | 56°F | 0" | -- |
| 2012 | 99°F | 64°F | -- | -- |
| 2011 | 75°F | 55°F | -- | -- |
| 2010 | 81°F | 48°F | -- | -- |
| 2009 | 79°F | 52°F | -- | -- |
| 2008 | 97°F | 54°F | -- | -- |
| 2007 | 81°F | 50°F | -- | -- |
| 2006 | 70°F | 52°F | -- | -- |
| 2005 | 73°F | 48°F | -- | -- |
| 2004 | 79°F | 55°F | -- | -- |
| 2003 | 86°F | 57°F | -- | -- |
| 2002 | 93°F | 57°F | -- | -- |
| 2001 | 88°F | 48°F | -- | -- |
| 2000 | 91°F | 57°F | -- | -- |
| 1999 | 81°F | 45°F | 0" | 0" |
| 1998 | 86°F | 54°F | 0" | 0" |
| 1997 | 92°F | 50°F | 0" | 0" |
| 1996 | -- | 49°F | 0" | 0" |
| 1995 | 100°F | 55°F | 0" | 0" |
| 1994 | 97°F | 52°F | 0" | 0" |
| 1993 | 78°F | 54°F | 0" | 0" |
| 1992 | 84°F | 52°F | 0" | 0" |
| 1991 | 85°F | 56°F | 0" | 0" |
| 1990 | 91°F | 50°F | 0" | 0" |
| 1989 | 97°F | 66°F | 0" | 0" |
| 1988 | 75°F | 49°F | 0" | 0" |
| 1987 | 80°F | 49°F | 0" | 0" |
| 1986 | 76°F | 52°F | 0" | 0" |
| 1985 | 84°F | 45°F | 0" | 0" |
| 1984 | 98°F | 62°F | 0" | 0" |
| 1983 | 89°F | 57°F | 0" | 0" |
| 1982 | 72°F | 61°F | 0" | 0" |
| 1981 | 90°F | 51°F | 0" | 0" |
| 1980 | 75°F | 43°F | 0" | 0" |
| 1979 | 108°F | 55°F | 0" | 0" |
| 1978 | 82°F | 49°F | 0" | 0" |
| 1977 | 75°F | 49°F | 0" | 0" |
| 1976 | 75°F | 57°F | 0" | 0" |
| 1975 | 94°F | 52°F | 0" | 0" |
| 1974 | 90°F | 45°F | 0" | 0" |
| 1973 | 71°F | 55°F | 0" | 0" |
| 1972 | 82°F | 46°F | 0" | 0" |
| 1971 | 90°F | 61°F | 0" | 0" |